Application of evaporation cooling in a microstructured packed bed reactor for decentralized CO2 methanation

Farsi, Sarvenaz; Liang, Shengzhi; Pfeifer, Peter; Dittmeyer, Roland

doi:10.1016/j.ijhydene.2021.03.050

Cited by 5 publications

(2 citation statements)

References 28 publications

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“…In the evaluated temperature range of 250–350 °C, the Ni–CeO 2 achieved CO 2 conversions between 69 and 95% when reduced at 350 °C. In most industrial processes, catalyst is loaded in a given reactor volume; and very especially, in advanced microreactors which aim at process intensification. − Accordingly, the implementation of the shaped CeO 2 -based catalysts arises as a powerful alternative to the conventional Al 2 O 3 -based ones since, at a given reactor volume, (i) higher CH 4 yields are obtained, (ii) reaction takes place at lower temperatures, and (iii) catalyst can be in situ reduced at milder conditions. The good performance of the CeO 2 -based supports in the methanation of CO 2 suggests that their application can be broadened to other reactions of industrial interest in which CeO 2 is commonly used as a reaction promoter, like the Fischer–Tropsch synthesis or the reforming of methane.…”

Section: Resultsmentioning

confidence: 99%

Shaping of Porous CeO₂ Powders into Highly Active Catalyst Carriers

Morales

Alarcón

Biset‐Peiró

et al. 2023

ACS Appl. Eng. Mater.

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CeO2 is attracting more and more attention because of its outstanding performance in heterogeneous catalysis, as an active support and a reaction promoter in reactions of industrial interest. We herein describe a novel and scalable manufacturing process of mm-sized CeO2 spheres by a combination of extrusion and spheronization of CeO2 porous powders. In this study, wet paste formulation and fabrication procedures were optimized, and as a result methylcellulose was identified as the best plasticizer for paste extrusion to provide well-defined spherical shapes and smooth surfaces, as well as reproducible batches. After nickel impregnation (10 wt %), the catalytic performance of CeO2 supports was evaluated in the CO2 methanation reaction (T = 250–350 °C, P = 5 bar·g) and compared with that of commercial Al2O3 spheres doped or not with CeO2. These novel CeO2-based catalysts are easily reduced at a moderate temperature and more active than the Al2O3 analogues, particularly at low reaction temperatures and small reactor volumes, properties that make their implementation in emerging reactor configurations very promising.

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Section: Resultsmentioning

confidence: 99%

Shaping of Porous CeO₂ Powders into Highly Active Catalyst Carriers

Morales

Alarcón

Biset‐Peiró

et al. 2023

ACS Appl. Eng. Mater.

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“…Regarding the reactor concepts developed and employed up to now, various fixed-bed and fluidized-bed concepts for SNG production have been investigated in the 1970s, while more recent investigations also focus on structured reactors (honeycomb- and microreactors) ,− and three-phase reactors. − …”

Section: Introductionmentioning

confidence: 99%

Methanation Pilot Plant with a Slurry Bubble Column Reactor: Setup and First Experimental Results

2022

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As a part of various research projects, a methanation pilot plant with a slurry bubble column reactor (SBCR) was commissioned and operated. The plant has a nominal load of a 100 kW methane output (lower calorific value) with a reactor diameter of 260 mm and a reactor length of 2500 mm. First experimental data on the steady-state and dynamic operation of catalytic CO2 methanation are presented. Steady-state results from laboratory-scale studies (<1 kW methane output) published previously were confirmed qualitatively at the pilot plant eliminating wall effects unavoidable in small-scale reactors. As predicted, high H2/CO2 ratios increase CO2 conversion, but excess H2 apparently promotes decomposition of the liquid phase (dibenzyltoluene) used in the bubble column reactor. Additionally, due to the increased reactor dimensions compared to laboratory equipment, it was now possible to observe a thermal response of the SBCR under conditions of rapid gas load changes characteristic of envisaged power-to-gas applications with volatile renewable electricity. As the predicted robustness of the SBCR-concept toward a dynamic operation with fast load changes was demonstrated successfully, it offers an attractive alternative to the established fixed-bed methanation technologies with their inherent limitations on dynamic operability.

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2D model of the transfer processes for CO2 methanation in a microchannel reactor

Данилов

Wichert²,

Kolb³

2022

Chemical Engineering Journal

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Application of evaporation cooling in a microstructured packed bed reactor for decentralized CO2 methanation

Cited by 5 publications

References 28 publications

Shaping of Porous CeO₂ Powders into Highly Active Catalyst Carriers

Shaping of Porous CeO₂ Powders into Highly Active Catalyst Carriers

Methanation Pilot Plant with a Slurry Bubble Column Reactor: Setup and First Experimental Results

2D model of the transfer processes for CO2 methanation in a microchannel reactor

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Application of evaporation cooling in a microstructured packed bed reactor for decentralized CO2 methanation

Cited by 5 publications

References 28 publications

Shaping of Porous CeO2 Powders into Highly Active Catalyst Carriers

Shaping of Porous CeO2 Powders into Highly Active Catalyst Carriers

Methanation Pilot Plant with a Slurry Bubble Column Reactor: Setup and First Experimental Results

2D model of the transfer processes for CO2 methanation in a microchannel reactor

Contact Info

Product

Resources

About

Shaping of Porous CeO₂ Powders into Highly Active Catalyst Carriers

Shaping of Porous CeO₂ Powders into Highly Active Catalyst Carriers