Intensified catalytic reactors for Fischer-Tropsch synthesis and for reforming of renewable fuels to hydrogen and synthesis gas

Delparish, Amin; Avcı, Ahmet K.

doi:10.1016/j.fuproc.2016.05.021

Cited by 77 publications

(26 citation statements)

References 186 publications

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“…In the last decade, the development of microstructured (packed bed) reactors enabled intensification of processes due to increased heat and mass transfer [10,11]. In regard to FTS, microstructured packed bed reactors constitute the most developed available technology to maximize the reaction output by overcoming state-of-the-art limitations and concerns [11,56,[58][59][60][61][62]. Small interior dimensions drastically increase the surface area and local heat transfer.…”

Section: Microstructured Reactor Technologymentioning

confidence: 99%

“…Higher conversion levels can be applied in the process without harming the catalyst. Furthermore, concentration and temperature changes may be quickly applied because of short overall distances and advanced tools like evaporation cooling [61,[63][64][65]. This allows high-pressure steam production from the FTS reaction in order to enhance the thermal efficiency of a process network while enabling the control over the FTS reactor at the same time.…”

Section: Microstructured Reactor Technologymentioning

confidence: 99%

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Dynamically Operated Fischer-Tropsch Synthesis in PtL-Part 1: System Response on Intermittent Feed

Loewert

Pfeifer

2020

ChemEngineering

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Society is facing serious challenges to reduce CO2 emissions. Effective change requires the use of advanced chemical catalyst and reactor systems to utilize renewable feedstocks. One pathway to long-term energy storage is its transformation into high quality, low-emission and CO2-neutral fuels. Performance of technologies such as the Fischer-Tropsch reaction can be maximized using the inherent advantages of microstructured packed bed reactors. Advantages arise not only from high conversion and productivity, but from its capability to resolve the natural fluctuation of renewable sources. This work highlights and evaluates a system for dynamic feed gas and temperature changes in a pilot scale Fischer-Tropsch synthesis unit for up to 7 L of product per day. Dead times were determined for non-reactive and reactive mode at individual positions in the setup. Oscillating conditions were applied to investigate responses with regard to gaseous and liquid products. The system was stable at short cycle times of 8 min. Neither of the periodic changes showed negative effects on the process performance. Findings even suggest this technology’s capability for effective, small-to-medium-scale applications with periodically changing process parameters. The second part of this work focuses on the application of a real-time photovoltaics profile to the given system.

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Section: Microstructured Reactor Technologymentioning

confidence: 99%

Section: Microstructured Reactor Technologymentioning

confidence: 99%

Dynamically Operated Fischer-Tropsch Synthesis in PtL-Part 1: System Response on Intermittent Feed

Loewert

Pfeifer

2020

ChemEngineering

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“…The CO could be stored and then burned to provide electricity to level the temporal variations in the availability of renewable electricity. Alternately, it could be subsequently converted into methane, methanol, or liquid hydrocarbon fuels using hydrogen from water electrolysis [5][6][7][8] enabling the utilization of existing infrastructure for energy storage, transport and distribution. Both approaches, which convert captured CO 2 and energy from renewable sources into stored chemical energy, can provide mitigation of CO 2 emission [9 , 10] .…”

Section: Introductionmentioning

confidence: 99%

Boudouard reaction driven by thermal plasma for efficient CO2 conversion and energy storage

Yang

Yuan

et al. 2020

Journal of Energy Chemistry

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“…Along these lines, production costs of biodiesel can be lowered by catalytic valorization of excess glycerol into valueadded products such as syngas (i.e. synthesis gas), which is the raw material of key commodities such as synthetic fuels, methanol and dimethyl ether [6].…”

Section: Introductionmentioning

confidence: 99%

Dry reforming of glycerol over Rh-based ceria and zirconia catalysts: New insights on catalyst activity and stability

Bulutoglu

Say

Bac

et al. 2018

Applied Catalysis A: General

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Effects of reaction temperature and feed composition on reactant conversion, product distribution and catalytic stability were investigated on syngas production by reforming of glycerol, a renewable waste, with CO 2 on Rh/ ZrO 2 and Rh/CeO 2 catalysts. For the first time in the literature, fresh and spent catalysts were characterized by in-situ FTIR, Raman spectroscopy, transmission electron microscopy and energy dispersive X-ray analysis techniques in order to unravel novel insights regarding the molecular-level origins of catalytic deactivation and aging under the conditions of glycerol dry reforming. Both catalysts revealed increased glycerol conversions with increasing temperature, where the magnitude of response became particularly notable above 650 and 700°C on Rh/ZrO 2 and Rh/CeO 2 , respectively. In accordance with thermodynamic predictions, CO 2 transformation occurred only above 700°C. Syngas was obtained at H 2 /CO ∼0.8, very close to the ideal composition for Fischer-Tropsch synthesis, and carbon formation was minimized with increasing temperature. Glycerol conversion decreased monotonically, whereas, after an initial increase, CO 2 conversion remained constant upon increasing CO 2 /glycerol ratio (CO 2 /G) from 1 to 4. In alignment with the slightly higher specific surface area of and smaller average Rh-particle size on ZrO 2 , Rh/ZrO 2 exhibited higher conversions and syngas yields than that of Rh/CeO 2. Current characterization studies indicated that Rh/CeO 2 revealed strong metal-support interaction, through which CeO 2 seemed to encapsulate Rh nanoparticles and partially suppressed the catalytic activity of Rh sites. However, such interactions also seemed to improve the stability of Rh/CeO 2 , rendering its activity loss to stay below that of Rh/ZrO 2 after 72 h time-on-stream testing at 750°C and for CO 2 /G = 4. Enhanced stability in the presence of CeO 2 was associated with the inhibition of coking of the catalyst surface by the mobile oxygen species and creation of oxygen vacancies on ceria domains. Deactivation of Rh/ZrO 2 was attributed to the sintering of Rh nanoparticles and carbon formation.

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Intensified catalytic reactors for Fischer-Tropsch synthesis and for reforming of renewable fuels to hydrogen and synthesis gas

Cited by 77 publications

References 186 publications

Dynamically Operated Fischer-Tropsch Synthesis in PtL-Part 1: System Response on Intermittent Feed

Dynamically Operated Fischer-Tropsch Synthesis in PtL-Part 1: System Response on Intermittent Feed

Boudouard reaction driven by thermal plasma for efficient CO2 conversion and energy storage

Dry reforming of glycerol over Rh-based ceria and zirconia catalysts: New insights on catalyst activity and stability

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