Staging of the Fischer‐Tropsch Reactor with a Cobalt‐Based Catalyst

Rafiee, Ahmad; Hillestad, Magne

doi:10.1002/ceat.201200700

Cited by 16 publications

(12 citation statements)

References 19 publications

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“…A positive effect has also been reported on FTS product selectivity, decreasing methane and increasing C 5+ , for cobalt-based catalysts [33,46]. For iron catalysts the same effect has been reported [47], but the influence of total pressure on selectivity for this catalyst is much smaller than for cobalt [48]. Botes et al [2] studied the effect of syngas pressure on methane selectivity at constant outlet H 2 /CO of 2 showing no variations of methane selectivity between 4 and 25 bar.…”

Section: Effect Of Pressure On Fts Selectivitysupporting

confidence: 58%

Fischer–Tropsch synthesis product selectivity over an industrial iron-based catalyst: Effect of process conditions

et al. 2016

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Please cite this article in press as: B. Todic, et al., Fischer-Tropsch synthesis product selectivity over an industrial iron-based catalyst: Effect of process conditions, Catal. Today (2015), http://dx. a b s t r a c tThe effect of process conditions on product selectivity of Fischer-Tropsch synthesis (FTS) over industrial iron-based catalyst (100 Fe/5 Cu/4.2 K/25 SiO 2 ) was studied in a 1-L stirred tank slurry reactor. Experiments were performed over a range of different reaction conditions, including three temperatures (T = 493, 513 and 533 K), four pressures (P = 0.8, 1.5, 2.25 and 2.5 MPa), two synthesis gas feed molar ratios (H 2 /CO = 0.67 and 2) and gas space velocity from 0.52 to 23.5 Ndm 3 /g-Fe/h. The effect of process conditions on reaction pathways of FTS and secondary 1-olefin reactions was analyzed by comparing product selectivities, chain growth probabilities and ratios of main products (n-paraffin, 1-and 2-olefin). Reduction of methane production and increase of C 5+ products was achieved by decreasing temperature, inlet H 2 /CO ratio and/or increasing pressure. Overall selectivity toward methane and C 5+ did not show significant changes with variations in residence time. All of the product selectivity variations were shown to be related to changes in chain length dependent growth probabilities.

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Section: Effect Of Pressure On Fts Selectivitysupporting

confidence: 58%

Fischer–Tropsch synthesis product selectivity over an industrial iron-based catalyst: Effect of process conditions

et al. 2016

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“…FCI was calculated based on the module costing technique [22]. The cost of the heat transfer area and the reactor tubes per meter (C) in $ m -1 is [13]:…”

Section: Process Description and Model Formulationmentioning

confidence: 99%

“…Staging of the reactor causes an increase in the production rate of methanol. In other studies, the systematic staging approach proposed by Hillestad [12] was applied to iron-and cobalt-based Fischer-Tropsch reactors [13,14]. Sectioning the Fischer-Tropsch reactor increased the wax flow rate.…”

Section: Introductionmentioning

confidence: 99%

Optimal Design Issues of a Methanol Synthesis Reactor from CO₂ Hydrogenation

Rafiee

2020

Chem Eng & Technol

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Methanol production through CO2 hydrogenation was investigated in a series of fixed‐bed reactors. Staging of the reactor into several smaller reactors is considered to enhance methanol production, in addition to maximizing a measure of annual profit. The degrees of freedom of the reactor system are the number of stages, the cooling medium temperature, the heat transfer area, and the volume of the stages. Depending on the objective function (OF) criteria, staging of the reactor increases the OF values to various extents. When the objective is to maximize the methanol production, the OF of a three‐stage reactor system with an inlet H2/CO2 ratio of 2 is 2.61 % higher than in the single‐stage configuration. Staging of the reactor also increases the synthesis gas conversion to methanol. However, if maximizing the annual profit is the objective, the profitability of the two‐stage configuration is 2.05 % greater than in the case with one reactor, due to the higher methanol production of the staged reaction system.

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“…They used lumping of components to reduce the number of components. Staging of the FT reactor will increase the production rate of key components 20, 21. Maretto and Krishna optimized a multistage slurry bubble column reactor for FTS 12.…”

Section: Resultsmentioning

confidence: 99%

“…A lumping technique was used to reduce the number of components. Staging of the FT reactor will increase the production rate of key components 20, 21.…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of a Gas‐to‐Liquids Process with a Staged Fischer‐Tropsch Reactor

Rafiee¹,

Panahi

2016

Chem Eng & Technol

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The optimal design of a natural gas-to-liquid hydrocarbons (GTL) process with a multistage cobalt-based Fischer-Tropsch reactor and interstage product separation is considered. The objective function is to maximize the wax (C 21+ ) production rate at the end of the reactor path. Sectioning of the Fischer-Tropsch reactor increases the chain growth probability inside the reactor which results in a higher production of wax. The carbon efficiency of the two-stage reactor is distinctly higher than that of the single-stage reactor.

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Staging of the Fischer‐Tropsch Reactor with a Cobalt‐Based Catalyst

Cited by 16 publications

References 19 publications

Fischer–Tropsch synthesis product selectivity over an industrial iron-based catalyst: Effect of process conditions

Fischer–Tropsch synthesis product selectivity over an industrial iron-based catalyst: Effect of process conditions

Optimal Design Issues of a Methanol Synthesis Reactor from CO₂ Hydrogenation

Optimal Design of a Gas‐to‐Liquids Process with a Staged Fischer‐Tropsch Reactor

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Staging of the Fischer‐Tropsch Reactor with a Cobalt‐Based Catalyst

Cited by 16 publications

References 19 publications

Fischer–Tropsch synthesis product selectivity over an industrial iron-based catalyst: Effect of process conditions

Fischer–Tropsch synthesis product selectivity over an industrial iron-based catalyst: Effect of process conditions

Optimal Design Issues of a Methanol Synthesis Reactor from CO2 Hydrogenation

Optimal Design of a Gas‐to‐Liquids Process with a Staged Fischer‐Tropsch Reactor

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Optimal Design Issues of a Methanol Synthesis Reactor from CO₂ Hydrogenation