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Optimal start-up strategies of a combined cooling and antisolvent multistage continuous crystallization process. Comput Chem Eng 2022. [DOI: 10.1016/j.compchemeng.2022.107671] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Development of a Dynamic Modeling Approach to Simulate a Segmented Distillation Column for Flexible Operation. CHEMENGINEERING 2021. [DOI: 10.3390/chemengineering5040066] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The need for flexible process equipment has increased over the past decade in the chemical industry. However, process equipment such as distillation columns have limitations that significantly restrict flexible operation. We investigate a segmented tray column designed to allow flexible operation. The design consists of radial trays connected at the downcomer of each tray. Each segment can be operated separately, but depending on the capacity of the feed stream, additional segments can be activated or deactivated. The connection between the trays aims to transfer liquid from one stationary segment to the adjacent inactive segment, thereby reducing the time required for the start-up process. In a case study on the separation of methanol and water, we perform dynamic simulations to assess the reduction in the start-up time of inactive segments. The results confirm the advantages over standard tray designs. The segmented distillation column is a step towards improving the flexibility of separation operations.
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Hoffmann C, Weigert J, Esche E, Repke JU. A pressure-driven, dynamic model for distillation columns with smooth reformulations for flexible operation. Comput Chem Eng 2020. [DOI: 10.1016/j.compchemeng.2020.107062] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Vasconcelos ALU, Figueirêdo MF, Carmo SKS, Ramos WB, Vasconcelos LGS, Brito RP. DEVELOPMENT OF A START-UP OPERATION AND DYNAMIC BEHAVIOR OF A THERMALLY COUPLED EXTRACTIVE DISTILLATION SCHEME. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2019. [DOI: 10.1590/0104-6632.20190361s20180053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | | | | | - W. B. Ramos
- Universidade Federal de Campina Grande, Brasil
| | | | - R. P. Brito
- Universidade Federal de Campina Grande, Brasil
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Mynttinen I, Li P. Modellierung und Optimierung dynamischer Hybridsysteme. CHEM-ING-TECH 2012. [DOI: 10.1002/cite.201200055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Niggemann G, Hiller C, Fieg G. Modeling and in-depth analysis of the start-up of dividing-wall columns. Chem Eng Sci 2011. [DOI: 10.1016/j.ces.2011.07.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Bartl M, Li P, Biegler LT. Improvement of state profile accuracy in nonlinear dynamic optimization with the quasi-sequential approach. AIChE J 2011. [DOI: 10.1002/aic.12437] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Hong W, Wang S, Li P, Wozny G, Biegler LT. A quasi-sequential approach to large-scale dynamic optimization problems. AIChE J 2005. [DOI: 10.1002/aic.10625] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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