Autothermal CO2 hydrogenation reactor for renewable natural gas generation: experimental proof-of-concept

文献情報

出版日 2022-09-06

DOI 10.1039/D2RE00236A

インパクトファクター 4.239

著者

Yichen Zhuang, David S. A. Simakov

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要旨

CO2 captured from various sources can be converted into renewable natural gas (RNG) via the Sabatier reaction (thermocatalytic hydrogenation of CO2). The highly exothermic nature of the Sabatier reaction brings certain challenges to the design and operation of Sabatier reactors, with thermal management being one of the main issues. In this study, we report the experimental, lab-scale proof-of-concept of an autothermal Sabatier reactor. We demonstrate a completely autothermal operation of the air-cooled, stainless-steel reactor using a commercial Ni catalyst. The effects of pressure, feed temperature, space velocity and cooling rate were investigated using three prototypes with different sizes and configurations. The maximum CO2 conversion of 93.5% with 100% generation selectivity to CH4 was achieved in a 10′′-length reactor, over 120 h of a continuous, stable operation (at 2400 L kg−1 h−1, without any reactor heating or feed preheating).

掲載誌

Reaction Chemistry & Engineering

CiteScore: 0

自己引用率: 8.8%

年間論文数: 284

Reaction Chemistry & Engineering is an interdisciplinary journal reporting cutting-edge research focused on enhancing the understanding and efficiency of reactions. Reaction engineering leverages the interface where fundamental molecular chemistry meets chemical engineering and technology. Challenges in chemistry can be overcome by the application of new technologies, while engineers may find improved solutions for process development from the latest developments in reaction chemistry. Reaction Chemistry & Engineering is a unique forum for researchers whose interests span the broad areas of chemical engineering and chemical sciences to come together in solving problems of importance to wider society. All papers should be written to be approachable by readers across the engineering and chemical sciences. Papers that consider multiple scales, from the laboratory up to and including plant scale, are particularly encouraged.

Autothermal CO2 hydrogenation reactor for renewable natural gas generation: experimental proof-of-concept

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