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Garmroodi Asil A, Nakhaei Pour A, Mirzaei S. Robust Prediction of Filtrate Flux for Separation of Catalyst Particles from Wax Effluent of Fischer-Tropsch Bubble Column Reactor via Regularization Network. CHEMICAL PRODUCT AND PROCESS MODELING 2019. [DOI: 10.1515/cppm-2018-0022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The effectiveness of an internal filtration system intended for separation of wax-catalyst from Fischer–Tropsch synthesis products is investigated in the present study. The generalization performances of in-house Regularization Network (RN) equipped with efficient training algorithm is recruited for prediction of filtrate flux. The network was trained by resorting several sets of experimental data obtained from a specific system of air/paraffin liquid phase/alumina oxide particle conducted in a slurry bubble column reactor. The RN is employed to explore the relationship between the slurry phase temperature (10–60 °C), pressure difference (0.3, 0.6 and 0.9 bar) and time (0–120 min) on the rate of outcome filtrate from various size of filter element (4, 8 and 12 microns). The superior recall and validation performances with different exemplars data points show that the optimally trained RN which has solid roots in multivariate regularization theory, is a reliable tool for prediction of filtrate flux. Faithful generalization performance of RN revels that around 66 % reduction in filtrate flux is observed by decreasing temperature from 60
{}_{}^ \circ C to10
{}_{}^ \circ C for filter pore size of 4 microns. Decreasing of slurry viscosity is the main reason of such behavior. Increasing pressure driving force has a significant effect on elevating filtrate flux. Due to cake formation, filtrate flux is decreased from 2 to 1.4 (ml/min.cm2) at constant temperature of 60
{}_{}^ \circ C for filter pore size of 8 microns. Furthermore, the backwashing process is more effective for smaller pore size filter and temperature variation does not have any considerable effect on filter recovery.
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Shafer WD, Jacobs G, Graham UM, Hamdeh HH, Davis BH. Increased CO2 hydrogenation to liquid products using promoted iron catalysts. J Catal 2019. [DOI: 10.1016/j.jcat.2018.11.001] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Peña D, Jensen L, Cognigni A, Myrstad R, Neumayer T, van Beek W, Rønning M. The Effect of Copper Loading on Iron Carbide Formation and Surface Species in Iron-Based Fischer-Tropsch Synthesis Catalysts. ChemCatChem 2018. [DOI: 10.1002/cctc.201701673] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Diego Peña
- Department of Chemical Engineering; Norwegian University of Science and Technology; 7491 Trondheim Norway
| | - Lise Jensen
- Department of Chemical Engineering; Norwegian University of Science and Technology; 7491 Trondheim Norway
| | - Andrea Cognigni
- Department of Chemical Engineering; Norwegian University of Science and Technology; 7491 Trondheim Norway
| | - Rune Myrstad
- SINTEF, Materials and Chemistry; 7465 Trondheim Norway
| | - Thomas Neumayer
- Department of Chemical Engineering; Norwegian University of Science and Technology; 7491 Trondheim Norway
| | - Wouter van Beek
- The Swiss-Norwegian Beamlines at ESRF; BP 220 F-38043 Grenoble France
| | - Magnus Rønning
- Department of Chemical Engineering; Norwegian University of Science and Technology; 7491 Trondheim Norway
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Owen RE, Mattia D, Plucinski P, Jones MD. Kinetics of CO 2 Hydrogenation to Hydrocarbons over Iron-Silica Catalysts. Chemphyschem 2017; 18:3211-3218. [PMID: 28657678 DOI: 10.1002/cphc.201700422] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 06/23/2017] [Indexed: 11/11/2022]
Abstract
The conversion of CO2 to hydrocarbons is increasingly seen as a potential alternative source of fuel and chemicals, while at the same time contributing to addressing global warming effects. An understanding of kinetics and mass transfer limitations is vital to both optimise catalyst performance and to scale up the whole process. In this work we report on a systematic investigation of the influence of the different process parameters, including pore size, catalyst support particle diameter, reaction temperature, pressure and reactant flow rate on conversion and selectivity of iron nanoparticle -silica catalysts. The results provided on activation energy and mass transfer limitations represent the basis to fully design a reactor system for the effective catalytic conversion of CO2 to hydrocarbons.
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Affiliation(s)
- Rhodri E Owen
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA27AY, UK
| | - Davide Mattia
- Department of Chemical Engineering, University of Bath, Claverton Down, Bath, BA27AY, UK
| | - Pawel Plucinski
- Department of Chemical Engineering, University of Bath, Claverton Down, Bath, BA27AY, UK
| | - Matthew D Jones
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA27AY, UK
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Hydrogen production: Perspectives, separation with special emphasis on kinetics of WGS reaction: A state-of-the-art review. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2016.12.003] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Sonal, Kondamudi K, Pant KK, Upadhyayula S. Synergistic Effect of Fe–Co Bimetallic Catalyst on FTS and WGS Activity in the Fischer–Tropsch Process: A Kinetic Study. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.6b04517] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sonal
- Department of Chemical Engineering, Indian Institute of Technology, Delhi, 110016, India
| | - Kishore Kondamudi
- Department of Chemical Engineering, Indian Institute of Technology, Delhi, 110016, India
| | - Kamal K. Pant
- Department of Chemical Engineering, Indian Institute of Technology, Delhi, 110016, India
| | - Sreedevi Upadhyayula
- Department of Chemical Engineering, Indian Institute of Technology, Delhi, 110016, India
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Comazzi A, Pirola C, Longhi M, Bianchi CLM, Suslick KS. Fe-based heterogeneous catalysts for the Fischer-Tropsch reaction: Sonochemical synthesis and bench-scale experimental tests. ULTRASONICS SONOCHEMISTRY 2017; 34:774-780. [PMID: 27773304 DOI: 10.1016/j.ultsonch.2016.07.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 07/12/2016] [Accepted: 07/19/2016] [Indexed: 06/06/2023]
Abstract
The sonochemical synthesis of nanostructured materials owes its origins to the extreme conditions created during acoustic cavitation, i.e., the formation of localized hot spots in the core of collapsing bubbles in a liquid irradiated with high intensity ultrasound (US). In particular, in the present work a sonochemical synthesis has been investigated for the production of three different iron-based samples supported on SiO2 and loaded with different metals and promoters (10 %wt of Fe; 30 %wt of Fe; 30 %wt of Fe, 2 %wt of K and 3.75 %wt of Cu) active in the Fischer-Tropsch (FT) process. Sonochemically synthesized heterogeneous catalysts were characterized by BET, XRPD, TPR, ICP, CHN, TEM, SEM and then tested in a fixed bed FT-bench-scale rig fed with a mixture of H2 and CO at a H2/CO molar ratio equal to 2, at activation temperatures of 350-400°C and reaction temperatures of 250-260°C. The experimental results showed that the ultrasonic samples are effective catalysts for the FT process. Notably, increasing the activation temperature increased CO conversion, while product selectivity did not diminish. All the sonochemically prepared samples presented in this work provided better catalytic results compared to the corresponding traditional FT impregnated catalysts.
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Affiliation(s)
- Alberto Comazzi
- Università degli Studi di Milano, Dipartimento di Chimica, via Golgi, 19, 20133 Milano, Italy.
| | - Carlo Pirola
- Università degli Studi di Milano, Dipartimento di Chimica, via Golgi, 19, 20133 Milano, Italy
| | - Mariangela Longhi
- Università degli Studi di Milano, Dipartimento di Chimica, via Golgi, 19, 20133 Milano, Italy
| | - Claudia L M Bianchi
- Università degli Studi di Milano, Dipartimento di Chimica, via Golgi, 19, 20133 Milano, Italy
| | - Kenneth S Suslick
- University of Illinois at Urbana-Champaign, School of Chemical Sciences, 505 S. Mathews Av., Urbana, IL 61801, USA
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Ma W, Jacobs G, Sparks DE, Klettlinger JL, Yen CH, Davis BH. Fischer–Tropsch synthesis and water gas shift kinetics for a precipitated iron catalyst. Catal Today 2016. [DOI: 10.1016/j.cattod.2016.01.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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9
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Comazzi A, Pirola C, Bianchi CL, Galli F, Longhi M, Manenti F. High-loaded Fe-supported catalyst for the thermochemical BtL-FT process: Experimental results and modelling. CAN J CHEM ENG 2015. [DOI: 10.1002/cjce.22357] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Alberto Comazzi
- Università degli Studi di Milano; Dipartimento di Chimica; Via Golgi 19 - 20133 Milano Italy
| | - Carlo Pirola
- Università degli Studi di Milano; Dipartimento di Chimica; Via Golgi 19 - 20133 Milano Italy
| | - Claudia L. Bianchi
- Università degli Studi di Milano; Dipartimento di Chimica; Via Golgi 19 - 20133 Milano Italy
| | - Federico Galli
- Università degli Studi di Milano; Dipartimento di Chimica; Via Golgi 19 - 20133 Milano Italy
| | - Mariangela Longhi
- Università degli Studi di Milano; Dipartimento di Chimica; Via Golgi 19 - 20133 Milano Italy
| | - Flavio Manenti
- Dipartimento di Chimica; Materiali e Ingegneria Chimica “Giulio Natta,“ Piazza Leonardo da Vinci; 32 - 20133 Milano Italy
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Preparation and characterization of Co–Fe nano catalyst for Fischer–Tropsch synthesis: Optimization using response surface methodology. J Taiwan Inst Chem Eng 2015. [DOI: 10.1016/j.jtice.2014.12.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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An investigation of the kinetics and mechanism of Fischer–Tropsch synthesis on Fe–Co–Ni supported catalyst. J IND ENG CHEM 2014. [DOI: 10.1016/j.jiec.2013.09.047] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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Water–gas shift kinetics over lanthanum-promoted iron catalyst in Fischer–Tropsch synthesis: thermodynamic analysis of nanoparticle size effect. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2014. [DOI: 10.1007/s13738-014-0435-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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15
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Fazlollahi F, Sarkari M, Gharebaghi H, Atashi H, Zarei M, Mirzaei A, Hecker W. Preparation of Fe-Mn/K/Al2O3 Fischer-Tropsch Catalyst and Its Catalytic Kinetics for the Hydrogenation of Carbon Monoxide. Chin J Chem Eng 2013. [DOI: 10.1016/s1004-9541(13)60503-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Yao Y, Liu X, Hildebrandt D, Glasser D. Fischer–Tropsch Synthesis Using H2/CO/CO2 Syngas Mixtures over an Iron Catalyst. Ind Eng Chem Res 2011. [DOI: 10.1021/ie200690y] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yali Yao
- School of Chemical and Metallurgical Engineering, University of the Witwatersrand, Johannesburg, South Africa
| | - Xinying Liu
- School of Chemical and Metallurgical Engineering, University of the Witwatersrand, Johannesburg, South Africa
| | - Diane Hildebrandt
- School of Chemical and Metallurgical Engineering, University of the Witwatersrand, Johannesburg, South Africa
| | - David Glasser
- School of Chemical and Metallurgical Engineering, University of the Witwatersrand, Johannesburg, South Africa
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