Fischer–Tropsch synthesis in milli-structured fixed-bed reactors: Experimental study and scale-up considerations

Knochen, J.; Güttel, Robert; Knobloch, Carsten; Turek, Thomas

doi:10.1016/j.cep.2010.04.013

Cited by 71 publications

(44 citation statements)

References 15 publications

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“…However, this is not necessarily a problem if reactor length and catalyst diameter are optimized. Knochen et al [8] and Myrstad et al [9] demonstrated high conversions at pressure drops of less than 2.3 bar m -1 (d P = 170 lm) and 1.5 bar m -1 (d P = 64 lm), respectively. These values appear to be acceptable for smallscale FTS units without recycle streams.…”

Section: Introductionmentioning

confidence: 97%

Holdup and Pressure Drop in Micro Packed‐Bed Reactors for Fischer‐Tropsch Synthesis

Knobloch

Güttel

Turek

2013

Chemie Ingenieur Technik

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Low-temperature Fischer-Tropsch synthesis was investigated in micro packed-bed reactors. Co/Re/c-Al 2 O 3 catalysts with different particle shapes and sizes (60 to 580 lm) were employed. Tubular reactor geometry with lengths of up to 1 m was chosen. Pressure drop measurements in the absence of reaction and during reaction were carried out. For analysis of the experimental data a reactor model was developed, which was also used for the determination of liquid holdup. It could be observed that the liquid holdup is independent of conversion, reaction temperature, C 5+ productivity, and reaction rate. For irregularly shaped catalyst particles, a liquid holdup in the range of 3 % was observed.

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Section: Introductionmentioning

confidence: 97%

Holdup and Pressure Drop in Micro Packed‐Bed Reactors for Fischer‐Tropsch Synthesis

Knobloch

Güttel

Turek

2013

Chemie Ingenieur Technik

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“…The critical features of FT reactors, such as heat transfer and mass transfer, are summarized and compared in Table 5 [68]. Other theoretical and practical aspects of selecting and designing FT reactors can be found in previous works [69][70][71][72][73]. Fe-, Co-, Ru-and Ni-based catalysts are mostly used in the Fischer-Tropsch process [66].…”

Section: Fischer-tropsch Synthesismentioning

confidence: 99%

Application of Fischer–Tropsch Synthesis in Biomass to Liquid Conversion

2012

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Fischer-Tropsch synthesis is a set of catalytic processes that can be used to produce fuels and chemicals from synthesis gas (mixture of CO and H 2 ), which can be derived from natural gas, coal, or biomass. Biomass to Liquid via Fischer-Tropsch (BTL-FT) synthesis is gaining increasing interests from academia and industry because of its ability to produce carbon neutral and environmentally friendly clean fuels; such kinds of fuels can help to meet the globally increasing energy demand and to meet the stricter environmental regulations in the future. In the BTL-FT process, biomass, such as woodchips and straw stalk, is firstly converted into biomass-derived syngas (bio-syngas) by gasification. Then, a cleaning process is applied to remove impurities from the bio-syngas to produce clean bio-syngas which meets the Fischer-Tropsch synthesis requirements. Cleaned bio-syngas is then conducted into a Fischer-Tropsch catalytic reactor to produce green gasoline, diesel and other clean biofuels. This review will analyze the three main steps of BTL-FT process, and discuss the issues related to biomass gasification, bio-syngas cleaning methods and conversion of bio-syngas into liquid hydrocarbons via Fischer-Tropsch synthesis. Some features in regard to increasing carbon utilization, enhancing catalyst activity, maximizing selectivity and avoiding catalyst deactivation in bio-syngas conversion process are also discussed.

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“…이 반응은 발열반응(△H R =-165 kJ/mol co )이며 부산물 중에 가장 선 택도가 높은 것은 메탄이다 [7,8]. 또한 촉매 불활성화 속도가 온도 에 민감하므로 높은 수득률을 얻기 위해서는 촉매층의 온도를 조절 해주어야 한다 [6,9].…”

Section: 서 론unclassified

Analysis on Thermal Effects of Process Channel Geometry for Microchannel Fischer-Tropsch Reactor Using Computational Fluid Dynamics

Lee

Jung

et al. 2015

Korean Chemical Engineering Research

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− In this study, FT reaction in a microchannel was simulated using computational fluid dynamics(CFD), and sensitivity analyses conducted to see effects of channel geometry variables, namely, process channel width, height, gap between process channel and cooling channel, and gap between process channels on the channel temperature profile. Microchannel reactor considered in the study is composed of five reaction channels with height and width ranging from 0.5 mm to 5.0 mm. Cooling surfaces is assumed to be in isothermal condition to account for the heat exchange between the surface and process channels. A gas mixture of H 2 and CO(H 2 /CO molar ratio = 2) is used as a reactant and operating conditions are the following: GHSV(gas hourly space velocity) = 10000 h -1 , pressure = 20 bar, and temperature = 483 K. From the simulation study, it was confirmed that heat removal in an FT microchannel reactor is affected channel geometry variables. Of the channel geometry variables considered, channel height and width have significant effect on the channel temperature profile. However, gap between cooling surface and process channel, and gap between process channels have little effect. Maximum temperature in the reaction channel was found to be proportional to channel height, and not affected by the width over a particular channel width size. Therefore, microchannels with smaller channel height(about less than 2 mm) and bigger channel width (about more than 4 mm), can be attractive design for better heat removal and higher production.

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Fischer–Tropsch synthesis in milli-structured fixed-bed reactors: Experimental study and scale-up considerations

Cited by 71 publications

References 15 publications

Holdup and Pressure Drop in Micro Packed‐Bed Reactors for Fischer‐Tropsch Synthesis

Holdup and Pressure Drop in Micro Packed‐Bed Reactors for Fischer‐Tropsch Synthesis

Application of Fischer–Tropsch Synthesis in Biomass to Liquid Conversion

Analysis on Thermal Effects of Process Channel Geometry for Microchannel Fischer-Tropsch Reactor Using Computational Fluid Dynamics

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