CFD modeling of a modular reactor for the Fischer–Tropsch synthesis: Effectiveness of a micro-scale cross-current cooling channel

Shin, Dongyoon; Ha, Kyoung-Su; Park, Myung-June; Kwak, Geunjae; Lee, Yun-Jo; Jun, Ki‐Won

doi:10.1016/j.fuel.2015.06.040

Cited by 16 publications

(7 citation statements)

References 30 publications

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“…Com a simulação foi possível observar que o aumento do diâmetro dos tubos gera um impacto negativo na conversão do CO e na seletividade em gasolina. Shin et al (2015) estudaram os efeitos promovidos por uma corrente de alimentação distribuída ao longo do meio reacional e um fluido refrigerante operando em contracorrente. Essa configuração promoveu uma redução no volume morto e uma melhor manutenção da temperatura no lado exotérmico do sistema.…”

Section: Hidrocarbonetos Olefinasunclassified

Análise E Otimização Das Condições Operacionais De Um Reator De Leito Fixo Na Síntese De Fischer-Tropsch

Delbianco

Oliveira

Boas³

et al. 2017

jCEC

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Pesquisas na área de rotas alternativas para a produção de combustíveis sintéticos vêm ganhando importância em virtude do esgotamento de recursos não renováveis. Nesse contexto, a síntese de Fischer-Tropsch é uma dessas possibilidades. O presente trabalho tem como objetivo o estudo das condições reacionais dessa síntese, em um reator de leito fixo. Para a realização dessa análise, foi feita a modelagem do sistema, através de balanços de massa e energia, juntamente com as leis cinéticas das reações e da perda de carga envolvida no escoamento. As equações diferencias ordinárias geradas na modelagem do reator foram resolvidas e avaliadas no software MatLab. Após a resolução dessas equações, efetuou-se uma varredura no sistema, a fim de se observar o comportamento da seletividade e rendimento de gasolina. A partir dessas análises, foram avaliadas quais variáveis levariam a um melhor rendimento de gasolina, promovendo-se então mudanças nas condições de operação do reator e no seu sistema de resfriamento. Nas melhores condições, conseguiu-se um rendimento em gasolina de mais 8 g por 100 g de alimentação, o que é razoável quando se compara com dados de plantas piloto publicados em literatura.

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Section: Hidrocarbonetos Olefinasunclassified

Análise E Otimização Das Condições Operacionais De Um Reator De Leito Fixo Na Síntese De Fischer-Tropsch

Delbianco

Oliveira

Boas³

et al. 2017

jCEC

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“…‐ There are different ways for synthesizing hydrocarbon mixtures from syngas to produce liquid fuel . Nevertheless, fossil fuels produced in the FTS have high quality because do not contain nitrogen, sulfur, and aromatic compounds The main active metals that are employed for F‐T synthesis are cobalt, iron, nickel and ruthenium catalysts .…”

Section: Introductionmentioning

confidence: 99%

Modeling Selectivity in the Fischer‐Tropsch Process with Response Surface Methodology

Atashi

Dinarvandi

2018

ChemistrySelect

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In Fischer-Tropsch synthesis, biomass and agricultural residue as a renewable and reliable resource contains carbon, hydrogen and oxygen. Fischer-Tropsch synthesis depends on the carbon structure available resources (coal, biomass, natural gas), which plays an important role in most of the primary energy supply. In this article, the effects of factors affecting the selectivity a model of Fe/Cu/K/Al catalyst for the optimization of products were investigated using statistical method. The statistical method is a relationship between the response process and the independent variable in the selectivity model. The results show, Adj R 2 and R-Sq are significant values in a model used for the optimization of products. Finally, maximizing CO + CO 2 conversion and C 5 + selectivity and minimizing CH 4 , CO, CO 2 , C 2-4 , olefin in C 2-4 selectivity were investigated under best operating conditions.

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“…Na et al 16 studied the geometric effect of coolant channels on thermal performance of a microchannel reactor using CFD simulation. Recently, Shin et al 17 showed the effectiveness of a microscale cross current cooling channel in thermal control of their modular reactor for FT synthesis through CFD simulation. Giovanni et al 18 presented through their CFD simulation study influence of tube diameter on FT selectivity and thermal behavior, considering a catalytic millifixed bed reactor.…”

Section: Introductionmentioning

confidence: 99%

“…Na et al studied the geometric effect of coolant channels on thermal performance of a microchannel reactor using CFD simulation. Recently, Shin et al . showed the effectiveness of a microscale cross current cooling channel in thermal control of their modular reactor for FT synthesis through CFD simulation.…”

Section: Introductionmentioning

confidence: 99%

CFD Simulation of Microchannel Reactor Block for Fischer–Tropsch Synthesis: Effect of Coolant Type and Wall Boiling Condition on Reactor Temperature

Kshetrimayum

Jung

et al. 2016

Ind. Eng. Chem. Res.

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Computational fluid dynamic (CFD) simulation of heat transfer in a microchannel reactor block for low temperature Fischer–Tropsch (FT) synthesis was considered. Heat generation profiles for different operating conditions (GHSV 5000 h–1; catalyst loading 60%–120%, where 100% loading equals 1060 kg/m3 of cobalt based catalyst from Oxford Catalyst Ltd.) were obtained from a single channel model. Simulations on a reactor block quantified the effects of three coolant types: cooling oil (Merlotherm SH), subcooled water and saturated water, on reactor temperature, and also evaluated the effect of wall boiling conditions. At process conditions of GHSV 5000 h–1 and catalyst loading of 120%, predicted temperature gradients along channel length were 32, 17 and 12 K for cooling oil, subcooled water and saturated water, respectively. A modified reactor block showed improved thermal performance as well as heat transfer enhancement due to wall boiling conditions.

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CFD modeling of a modular reactor for the Fischer–Tropsch synthesis: Effectiveness of a micro-scale cross-current cooling channel

Cited by 16 publications

References 30 publications

Análise E Otimização Das Condições Operacionais De Um Reator De Leito Fixo Na Síntese De Fischer-Tropsch

Análise E Otimização Das Condições Operacionais De Um Reator De Leito Fixo Na Síntese De Fischer-Tropsch

Modeling Selectivity in the Fischer‐Tropsch Process with Response Surface Methodology

CFD Simulation of Microchannel Reactor Block for Fischer–Tropsch Synthesis: Effect of Coolant Type and Wall Boiling Condition on Reactor Temperature

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