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Shen F, Ye L, Guan H, He Y. Enhanced control structure design for an industrial off-gas system: Simple reconfigurations benefit the economy. Heliyon 2023; 9:e12934. [PMID: 36704278 PMCID: PMC9871233 DOI: 10.1016/j.heliyon.2023.e12934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 11/22/2022] [Accepted: 01/09/2023] [Indexed: 01/18/2023] Open
Abstract
For control structure design of the industrial off-gas benchmark system, application of the Skogestad's state-of-art design procedure has suggested the scrubber inlet pressure (P si in the roaster) and one of the fan speeds (N fan1 or N_fan2 in the furnace) as the self-optimizing controlled variables CVs. In this study, we stress and advocate the gSOC-plus-BAB approach as an enhanced design toolkit for the classical and systematical design procedure. The gSOC (global self-optimizing control) is able to efficiently solve measurement combinations as CVs with improved economic performances, while the BAB (branch and bound) algorithm serves to fast screen promising measurement subsets for large-scale problems. Using the enhanced design for the off-gas system, our new findings are to control the combination of roaster's ID fan outlet pressures, 0.494P IDfan1+0.506P IDfan2 (setpoint: -257.04 Pa), and the furnace's fan pressure difference, P IDfan1- P IDfan2 (setpoint: 0). Such simple reconfigurations can dramatically reduce the average economic loss by 53.3% for the roaster and even achieve perfect optimal control for the furnace. Both steady state and dynamic evaluations are carried out to validate the reconfigured control structures. © 2017 Elsevier Inc. All rights reserved.
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Affiliation(s)
- Feifan Shen
- NingboTech University, Ningbo, 315100, China
| | - Lingjian Ye
- Huzhou Key Laboratory of Intelligent Sensing and Optimal Control for Industrial Systems, School of Engineering, Huzhou University, Huzhou, 313000, China,Key Laboratory of Intelligent Manufacturing Quality Big Data Tracing and Analysis of Zhejiang Province, China Jiliang University, Hangzhou, 310018, China,Corresponding author. School of Engineering, Huzhou University, Huzhou, 313000, China.
| | - Hongwei Guan
- Ningbo University of Finance and Economics, Ningbo, 315175, China
| | - Yuchen He
- Key Laboratory of Intelligent Manufacturing Quality Big Data Tracing and Analysis of Zhejiang Province, China Jiliang University, Hangzhou, 310018, China
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2
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A control philosophy for complex Non-square chemical process. J Loss Prev Process Ind 2022. [DOI: 10.1016/j.jlp.2022.104900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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3
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Wu X, Hou Y, Zhang K. Optimal control approach for nonlinear chemical processes with uncertainty and application to a continuous stirred-tank reactor problem. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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4
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Srivastava S, Bhartiya S. Rate and grade transition control using PI controller based supervisory and regulatory layers: Diacetone alcohol process case study. ISA TRANSACTIONS 2022; 128:287-293. [PMID: 34861986 DOI: 10.1016/j.isatra.2021.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Revised: 11/02/2021] [Accepted: 11/02/2021] [Indexed: 06/13/2023]
Abstract
Product rate and grade transitions are two significant operations undertaken by process plants to operate in uncertain environments. Rate transitions, typically dictated by economic considerations, are often implemented in open loop via a throughput manipulator (TPM). The absence of feedback of product rate to manipulate the TPM results in an offset during rate/grade transitions as well as in presence of feed-side disturbances. In this work, we explore use of a simple PI controller based supervisory control layer that guides the plantwide regulatory layer to achieve product rate targets during grade transition or in the presence of feed grade disturbances. While such a layer cannot incorporate optimal operation and constraint handling explicitly as in model predictive control, it obviates the need for advanced process control elements that medium-to-small scale industries can ill-afford. The PI based supervisory-regulatory control structure is illustrated using simulated case studies on a prototypical process for diacetone alcohol production comprising of a reactor followed by two distillation columns and a recycle.
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Affiliation(s)
- Shashank Srivastava
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai, India
| | - Sharad Bhartiya
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai, India.
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5
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Plantwide control of a biodiesel production process with variable feedstock. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.07.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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6
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7
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Kelani RO, Ahmad Z, Patle D. Mechanistic model-based control of biodiesel production processes: a review of needs and scopes. CHEM ENG COMMUN 2021. [DOI: 10.1080/00986445.2021.2012463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Rasheed O. Kelani
- School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Penang, Malaysia
| | - Zainal Ahmad
- School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Penang, Malaysia
| | - Dipesh Patle
- Chemical Engineering Department, MNNIT Allahabad, Uttar Pradesh, India
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9
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Tang W, Daoutidis P. Coordinating distributed MPC efficiently on a plantwide scale: The Lyapunov envelope algorithm. Comput Chem Eng 2021. [DOI: 10.1016/j.compchemeng.2021.107532] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Patilas CS, Kookos IK. A quadratic approximation of the back-off methodology for the control structure selection problem. Comput Chem Eng 2020. [DOI: 10.1016/j.compchemeng.2020.107114] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Abstract
This paper describes a design procedure for a collaborative control structure in Plant Wide Control (PWC), taking into account the existing controllable parameters as a novelty in the procedure. The collaborative control structure includes two layers, supervisory and regulatory, which are determined according to the dynamics hierarchy obtained by means of the Hankel matrix. The supervisory layer is determined by the main dynamics of the process and the regulatory layer comprises the secondary dynamics and controllable parameters. The methodology proposed is applied to a wastewater treatment plant, particularly to the Benchmark Simulation Model No 1 (BSM1) for the activated sludge process, comparing the results with the use of a Model Predictive Controller in the supervisory layer. For determining controllable parameters in the BSM1 control, a new specific oxygen mass transfer model in the biological reactor has been developed, separating the kLa volumetric mass transfer coefficient into two controllable parameters, kL and a.
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12
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Zotică C, Nord LO, Kovács J, Skogestad S. Optimal operation and control of heat to power cycles: A new perspective from a systematic plantwide control approach. Comput Chem Eng 2020. [DOI: 10.1016/j.compchemeng.2020.106995] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Rasmussen JB, Mansouri SS, Zhang X, Abildskov J, Huusom JK. A mass and energy balance stage model for cyclic distillation. AIChE J 2020. [DOI: 10.1002/aic.16259] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jess Bjørn Rasmussen
- PROSYS, Department of Chemical and Biochemical EngineeringTechnical University of Denmark Kgs. Lyngby Denmark
- ILCInstitute of Process Engineering, Chinese Academy of Sciences Beijing China
| | - Seyed Soheil Mansouri
- PROSYS, Department of Chemical and Biochemical EngineeringTechnical University of Denmark Kgs. Lyngby Denmark
| | - Xiangping Zhang
- ILCInstitute of Process Engineering, Chinese Academy of Sciences Beijing China
| | - Jens Abildskov
- PROSYS, Department of Chemical and Biochemical EngineeringTechnical University of Denmark Kgs. Lyngby Denmark
| | - Jakob Kjøbsted Huusom
- PROSYS, Department of Chemical and Biochemical EngineeringTechnical University of Denmark Kgs. Lyngby Denmark
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Jahanshahi E, Krishnamoorthy D, Codas A, Foss B, Skogestad S. Plantwide control of an oil production network. Comput Chem Eng 2020. [DOI: 10.1016/j.compchemeng.2020.106765] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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16
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Abstract
Although Kaibel distillation columns are superior to conventional distillation sequences owing to smaller equipment investment and operation cost, they display high nonlinearity and this greatly increases the difficulty of achieving their tight control. To overcome this problem, four decentralized composition control structures, i.e., the CSR/QR, CSR/B, CSD/QR, and CSD/B structures, are proposed and compared based on the control of a Kaibel distillation column fractionating a methanol/ethanol/propanol/butanol quaternary mixture. These four composition control structures all include five composition control loops. While the four of them are employed to maintain the purity of the top, upper sidestream, lower sidestream, and bottom products, the remaining one is employed to minimize the energy consumption of the Kaibel distillation column by maintaining the composition of propanol at the first stage of the prefractionator. Dynamic simulation results show the CSR/QR and CSR/B structures can tightly maintain the purity of the controlled products with a small overshoot and short settling time after facing various disturbances in feed conditions, but the CSD/QR and CSD/B structures lead to oscillatory responses (the latter even shows divergent responses under individual disturbances). At the end of the article, some effective guides for developing composition control systems are given.
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Reyes-Lúa A, Skogestad S. Systematic Design of Active Constraint Switching Using Classical Advanced Control Structures. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b04511] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Adriana Reyes-Lúa
- Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), Sem Sælands vei 4, 7491 Trondheim, Norway
| | - Sigurd Skogestad
- Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), Sem Sælands vei 4, 7491 Trondheim, Norway
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18
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A Retrofit Hierarchical Architecture for Real-Time Optimization and Control Integration. Processes (Basel) 2020. [DOI: 10.3390/pr8020181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
To achieve the optimal operation of chemical processes in the presence of disturbances and uncertainty, a retrofit hierarchical architecture (HA) integrating real-time optimization (RTO) and control was proposed. The proposed architecture features two main components. The first is a fast extremum-seeking control (ESC) approach using transient measurements that is employed in the upper RTO layer. The fast ESC approach can effectively suppress the impact of plant-model mismatch and steady-state wait time. The second is a global self-optimizing control (SOC) scheme that is introduced to integrate the RTO and control layers. The proposed SOC scheme minimizes the global average loss based on the approximation of necessary conditions of optimality (NCO) over the entire operating region. A least-squares regression technique was adopted to select the controlled variables (CVs) as linear combinations of measurements. The proposed method does not require the second order derivative information, therefore, it is numerically more reliable and robust. An exothermic reaction process is presented to illustrate the effectiveness of the proposed method.
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19
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Ghosh S, Bequette BW. Process Systems Engineering and the Human-in-The-Loop: The Smart Control Room. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b04739] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sambit Ghosh
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - B. Wayne Bequette
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
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20
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Dynamic Simulations of the Allam Cycle Power Plant Integrated with an Air Separation Unit. INTERNATIONAL JOURNAL OF CHEMICAL ENGINEERING 2019. [DOI: 10.1155/2019/6035856] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The unprecedented rise in carbon dioxide levels due to anthropogenic activities, if left unchecked, can lead to increased global warming. Electricity and heat generation account for around 25% of this greenhouse gas emission. The Allam cycle, a new oxy-fuel power cycle that emits virtually no CO2 and NOx, is inherently integrated with an air separation plant. In this study, Aspen Plus Dynamics was used to model the integrated Allam power plant/air separation unit (ASU) with a high degree of heat and work integration. The steady-state model developed agrees with the model developed by Net Power. Regulatory and advanced PID controllers were implemented for major equipment to meet operation objectives. Controller set point change, power ramp down, and natural gas composition change were studied, and key plant performance indicators were monitored and analyzed. This study shows that the Allam cycle power plant integrated with an ASU is controllable with the proposed control strategy under a tightly integrated configuration.
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21
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Bankole T, Bhattacharyya D, Gebreslassie B, Diwekar U. A biomimetic approach to fast selection of optimal controlled variables using multiagent algorithms and a decomposition approach. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2019.04.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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22
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Krishnamoorthy D, Skogestad S. Online Process Optimization with Active Constraint Set Changes using Simple Control Structures. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b00308] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dinesh Krishnamoorthy
- Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), Trondheim 7491, Norway
| | - Sigurd Skogestad
- Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), Trondheim 7491, Norway
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23
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Topology Effects on Sparse Control of Complex Networks with Laplacian Dynamics. Sci Rep 2019; 9:9034. [PMID: 31227756 PMCID: PMC6588614 DOI: 10.1038/s41598-019-45476-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 06/10/2019] [Indexed: 12/23/2022] Open
Abstract
Ease of control of complex networks has been assessed extensively in terms of structural controllability and observability, and minimum control energy criteria. Here we adopt a sparsity-promoting feedback control framework for undirected networks with Laplacian dynamics and distinct topological features. The control objective considered is to minimize the effect of disturbance signals, magnitude of control signals and cost of feedback channels. We show that depending on the cost of feedback channels, different complex network structures become the least expensive option to control. Specifically, increased cost of feedback channels favors organized topological complexity such as modularity and centralization. Thus, although sparse and heterogeneous undirected networks may require larger numbers of actuators and sensors for structural controllability, networks with Laplacian dynamics are shown to be easier to control when accounting for the cost of feedback channels.
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24
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Plantwide control structure design of a complex hydrogenation process with four recycle streams. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2019.01.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Affiliation(s)
- J. D. le Roux
- Department of Electrical, Electronic and Computer Engineering, University of Pretoria, Pretoria 0002, South Africa
| | - I. K. Craig
- Department of Electrical, Electronic and Computer Engineering, University of Pretoria, Pretoria 0002, South Africa
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26
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Bähner F, Santacoloma P, Huusom J. Optimal operation of parallel dead-end filters in a continuous bio-based process. FOOD AND BIOPRODUCTS PROCESSING 2019. [DOI: 10.1016/j.fbp.2019.02.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Das T, Heggheim SJ, Dudek M, Verheyleweghen A, Jäschke J. Optimal Operation of a Subsea Separation System Including a Coalescence Based Gravity Separator Model and a Produced Water Treatment Section. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.8b04923] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tamal Das
- Department of Chemical Engineering, Norwegian University of Science and Technology, Sem Sælandsvei 4, 7491 Trondheim, Norway
| | - Sindre Johan Heggheim
- Department of Chemical Engineering, Norwegian University of Science and Technology, Sem Sælandsvei 4, 7491 Trondheim, Norway
| | - Marcin Dudek
- Department of Chemical Engineering, Norwegian University of Science and Technology, Sem Sælandsvei 4, 7491 Trondheim, Norway
| | - Adriaen Verheyleweghen
- Department of Chemical Engineering, Norwegian University of Science and Technology, Sem Sælandsvei 4, 7491 Trondheim, Norway
| | - Johannes Jäschke
- Department of Chemical Engineering, Norwegian University of Science and Technology, Sem Sælandsvei 4, 7491 Trondheim, Norway
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28
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Das T, Jäschke J. Simplified First-Principles Model of a Compact Flotation Unit for Use in Optimization and Control. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b04018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tamal Das
- Department of Chemical Engineering, Norwegian University of Science and Technology, (NTNU), 7491 Trondheim, Norway
| | - Johannes Jäschke
- Department of Chemical Engineering, Norwegian University of Science and Technology, (NTNU), 7491 Trondheim, Norway
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29
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Alves VMC, Lima FS, Silva SK, Araujo ACB. Metamodel-Based Numerical Techniques for Self-Optimizing Control. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b04337] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Victor M. C. Alves
- Department of Chemical Engineering, Federal University of Campina Grande, Av. Aprígio Veloso, 882, Campina Grande 58429-900 Paraíba Brazil
| | - Felipe S. Lima
- Department of Chemical Engineering, Federal University of Campina Grande, Av. Aprígio Veloso, 882, Campina Grande 58429-900 Paraíba Brazil
| | - Sidinei K. Silva
- Department of Chemical Engineering, Federal University of Campina Grande, Av. Aprígio Veloso, 882, Campina Grande 58429-900 Paraíba Brazil
| | - Antonio C. B. Araujo
- Department of Chemical Engineering, Federal University of Campina Grande, Av. Aprígio Veloso, 882, Campina Grande 58429-900 Paraíba Brazil
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30
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Abstract
Energy is a key driver of the modern economy, therefore modeling and simulation of energy systems has received significant research attention. We review the major developments in this area and propose two ways to categorize the diverse contributions. The first categorization is according to the modeling approach, namely into computational, mathematical, and physical models. With this categorization, we highlight certain novel hybrid approaches that combine aspects of the different groups proposed. The second categorization is according to field namely Process Systems Engineering (PSE) and Energy Economics (EE). We use the following criteria to illustrate the differences: the nature of variables, theoretical underpinnings, level of technological aggregation, spatial and temporal scales, and model purposes. Traditionally, the Process Systems Engineering approach models the technological characteristics of the energy system endogenously. However, the energy system is situated in a broader economic context that includes several stakeholders both within the energy sector and in other economic sectors. Complex relationships and feedback effects exist between these stakeholders, which may have a significant impact on strategic, tactical, and operational decision-making. Leveraging the expertise built in the Energy Economics field on modeling these complexities may be valuable to process systems engineers. With this categorization, we present the interactions between the two fields, and make the case for combining the two approaches. We point out three application areas: (1) optimal design and operation of flexible processes using demand and price forecasts, (2) sustainability analysis and process design using hybrid methods, and (3) accounting for the feedback effects of breakthrough technologies. These three examples highlight the value of combining Process Systems Engineering and Energy Economics models to get a holistic picture of the energy system in a wider economic and policy context.
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31
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Wang X, Han D, Lin Y, Du W. Recent progress and challenges in process optimization: Review of recent work at ECUST. CAN J CHEM ENG 2018. [DOI: 10.1002/cjce.23250] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Xiaoqiang Wang
- Key Laboratory of Advanced Control and Optimization for Chemical Processes; East China University of Science and Technology, Ministry of Education; Shanghai 200237 China
| | - Dong Han
- Key Laboratory of Advanced Control and Optimization for Chemical Processes; East China University of Science and Technology, Ministry of Education; Shanghai 200237 China
| | - Yuefeng Lin
- Key Laboratory of Advanced Control and Optimization for Chemical Processes; East China University of Science and Technology, Ministry of Education; Shanghai 200237 China
| | - Wenli Du
- Key Laboratory of Advanced Control and Optimization for Chemical Processes; East China University of Science and Technology, Ministry of Education; Shanghai 200237 China
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32
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Safari A, Eslamloueyan R. Analysis of Control Degrees of Freedom in Batch and Cyclic Processes. CHEMICAL PRODUCT AND PROCESS MODELING 2018. [DOI: 10.1515/cppm-2017-0055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Recently, we have proposed a new formulation approach for control degree of freedom (CDOF) analysis of process systems. This formula interrelates the CDOF and elements of a process flow diagram (PFD). The formulation is accurate, easily applicable by process engineers, and needs little prior knowledge of the process under study. This paper describes further about this new formulation and its advantages by applying it to batch and cyclic processes. The results demonstrate the correctness of the method in determining CDOF for all case studies at both steady state and dynamic conditions. The CDOF for “reheat regenerative Rankine” and “vapor absorption refrigeration” cycles have been determined to be 9 and 8, respectively. The steady state CDOF values for the Rankine and refrigeration cycles have been calculated as 8 and 4, respectivley. Also the CDOF for the process of “heat pump integrated with batch distillation column” is 4 that verifies the suggested formula of CDOF. The method also gives beneficial insights about the manipulated variables (MVs) in a control system.
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Ma K, Pan X, Zhao T, Yang J, Zhu Z, Xu D, Wang Y. Dynamic Control of Hybrid Processes with Liquid–Liquid Extraction for Propylene Glycol Methyl Ether Dehydration. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b02894] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kang Ma
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Xiangshuai Pan
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Tingran Zhao
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Jingwei Yang
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Zhaoyou Zhu
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Dongmei Xu
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Yinglong Wang
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
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34
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Patle DS, Gadhamsetti AP, Sharma S, Agrawal V, Rangaiah GP. Plantwide Control of the Formic Acid Production Process Using an Integrated Framework of Simulation and Heuristics. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b02654] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Dipesh S. Patle
- Chemical Engineering Department, Motilal Nehru National Institute of Technology, Allahabad, 211 004, Uttar Pradesh, India
| | - Akhil Premkumar Gadhamsetti
- Chemical Engineering Department, School of Civil and Chemical Engineering, VIT University, Vellore 632014, Tamilnadu, India
| | - Swapnil Sharma
- Chemical Engineering Department, School of Civil and Chemical Engineering, VIT University, Vellore 632014, Tamilnadu, India
| | - Venu Agrawal
- Chemical Engineering Department, School of Civil and Chemical Engineering, VIT University, Vellore 632014, Tamilnadu, India
| | - G. P. Rangaiah
- Chemical Engineering Department, School of Civil and Chemical Engineering, VIT University, Vellore 632014, Tamilnadu, India
- Department of Chemical & Biomolecular Engineering, National University of Singapore, Engineering Drive 4, Singapore, 117585
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35
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Dynamic Optimization of a Subcritical Steam Power Plant Under Time-Varying Power Load. Processes (Basel) 2018. [DOI: 10.3390/pr6080114] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The increasing variability in power plant load in response to a wildly uncertain electricity market and the need to to mitigate CO2 emissions, lead power plant operators to explore advanced options for efficiency optimization. Model-based, system-scale dynamic simulation and optimization are useful tools in this effort and are the subjects of the work presented here. In prior work, a dynamic model validated against steady-state data from a 605 MW subcritical power plant was presented. This power plant model was used as a test-bed for dynamic simulations, in which the coal load was regulated to satisfy a varying power demand. Plant-level control regulated the plant load to match an anticipated trajectory of the power demand. The efficiency of the power plant’s operation at varying loads was optimized through a supervisory control architecture that performs set point optimization on the regulatory controllers. Dynamic optimization problems were formulated to search for optimal time-varying input trajectories that satisfy operability and safety constraints during the transition between plant states. An improvement in time-averaged efficiency of up to 1.8% points was shown to be feasible with corresponding savings in coal consumption of 184.8 tons/day and a carbon footprint decrease of 0.035 kg/kWh.
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Daoutidis P, Lee JH, Harjunkoski I, Skogestad S, Baldea M, Georgakis C. Integrating operations and control: A perspective and roadmap for future research. Comput Chem Eng 2018. [DOI: 10.1016/j.compchemeng.2018.04.011] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Krishnamoorthy D, Foss B, Skogestad S. Steady-state real-time optimization using transient measurements. Comput Chem Eng 2018. [DOI: 10.1016/j.compchemeng.2018.03.021] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Bankole T, Jones D, Bhattacharyya D, Turton R, Zitney SE. Optimal scheduling and its Lyapunov stability for advanced load-following energy plants with CO2 capture. Comput Chem Eng 2018. [DOI: 10.1016/j.compchemeng.2017.10.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Hoeser S, Arora S, Koitka M, Kleinert T, Kahrs O, Sebastia-Saez D, Arellano-García H. Adaptation of Control Structure Design Methods to an Industrial Plant Engineering Workflow. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b02582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | - T. Kleinert
- Technology
Polyurethanes, BASF Antwerpen N.V., B-2004 Antwerpen, Belgium
| | | | - D. Sebastia-Saez
- Department
of Chemical and Process Engineering, University of Surrey, Stag Hill
Campus, GU2 7XH, Guildford, United Kingdom
| | - H. Arellano-García
- Department
of Chemical and Process Engineering, University of Surrey, Stag Hill
Campus, GU2 7XH, Guildford, United Kingdom
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40
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Closed-loop reactor network synthesis with guaranteed robustness. Comput Chem Eng 2017. [DOI: 10.1016/j.compchemeng.2017.06.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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41
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Hultgren M, Ikonen E, Kovács J. Once-through Circulating Fluidized Bed Boiler Control Design with the Dynamic Relative Gain Array and Partial Relative Gain. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b03259] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Matias Hultgren
- Systems
Engineering, University of Oulu, POB 4300, Oulun yliopisto, FI-90014, Finland
| | - Enso Ikonen
- Systems
Engineering, University of Oulu, POB 4300, Oulun yliopisto, FI-90014, Finland
| | - Jenő Kovács
- Systems
Engineering, University of Oulu, POB 4300, Oulun yliopisto, FI-90014, Finland
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Juliani Correa de Godoy R, Garcia C. Plantwide Control: A Review of Design Techniques, Benchmarks, and Challenges. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b00416] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rodrigo Juliani Correa de Godoy
- Department of Telecommunications
and Control, Escola Politécnica of the University of São Paulo, 05508-900 São Paulo-SP, Brazil
| | - Claudio Garcia
- Department of Telecommunications
and Control, Escola Politécnica of the University of São Paulo, 05508-900 São Paulo-SP, Brazil
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Silva SK, Villar SB, Costa ABD, Teixeira HCG, Araújo ACB. Development and application of an automatic tool for the selection of control variables based on the self-optimizing control methodology. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2017. [DOI: 10.1590/0104-6632.20170343s20150445] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- S. K. Silva
- Federal University of Campina Grande, Brazil
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Paul P, Bhattacharyya D, Turton R, Zitney SE. Nonlinear Dynamic Model-Based Multiobjective Sensor Network Design Algorithm for a Plant with an Estimator-Based Control System. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.6b04020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Prokash Paul
- Department
of Chemical and Biomedical Engineering, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Debangsu Bhattacharyya
- Department
of Chemical and Biomedical Engineering, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Richard Turton
- Department
of Chemical and Biomedical Engineering, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Stephen E. Zitney
- Department
of Chemical and Biomedical Engineering, West Virginia University, Morgantown, West Virginia 26506, United States
- National Energy Technology Laboratory, U.S. Department of Energy, Morgantown, West Virginia 26507, United States
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Kadhim AMH, Castaño Arranz M, Birk W. Automated Control Configuration Selection Considering System Uncertainties. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.6b04035] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ali M. H. Kadhim
- Control
Engineering Group, Department of Computer Science, Electrical and
Space Engineering, Luleå University of Technology, Luleå, Sweden
- Department
of Electrical Engineering, University of Kufa, Najaf, Iraq
| | - Miguel Castaño Arranz
- Control
Engineering Group, Department of Computer Science, Electrical and
Space Engineering, Luleå University of Technology, Luleå, Sweden
| | - Wolfgang Birk
- Control
Engineering Group, Department of Computer Science, Electrical and
Space Engineering, Luleå University of Technology, Luleå, Sweden
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47
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Ojasvi, Kaistha N. Plantwide Control for Maximum Throughput Operation of an Ester Purification Process. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b02997] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ojasvi
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Nitin Kaistha
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
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Ikonen E, Selek I, Najim K. Process control using finite Markov chains with iterative clustering. Comput Chem Eng 2016. [DOI: 10.1016/j.compchemeng.2016.05.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Li Z, Zhong W, Wang X, Luo N, Qian F. Control structure design of an industrial crude terephthalic acid hydropurification process with catalyst deactivation. Comput Chem Eng 2016. [DOI: 10.1016/j.compchemeng.2016.01.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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