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CO2 Methanation in a Slurry Bubble Column Reactor – Influence of the Liquid Phase on the Reaction Kinetics and the Reactor Design

Lefebvre, J.; Bajohr, S.; Kolb, T.

Abstract:
The Power-to-Gas process, which enables the transformation of electric energy to chemical energy via water electrolysis and subsequent methanation, is a promising way to store surplus electricity from renewable sources in form of chemical energy carriers. In this process, electric energy can be provided by fluctuating and intermittent solar and wind energy, while biogas can be used as CO2 source for the methanation. Because of the fluctuating nature of renewable electricity, the CO2 methanation has to be operated under dynamic conditions.

The CO2 methanation reaction is highly exothermic, which makes reactor temperature control under dynamic operation conditions challenging. To tackle this issue, a slurry bubble column reactor is an attractive reactor concept: the high heat capacity of the heat transfer liquid allows for isothermal process conditions and a more efficient cooling compared to state-of-the-art two-phase reactors. For the design of a slurry bubble column reactor for CO2 methanation purposes, some pieces of information are required. The CO2 methanation reaction kinetics in a three-phase system is needed and the effect ... mehr


Zugehörige Institution(en) am KIT Engler-Bunte-Institut (EBI)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator DOI: 10.1002/cite.201650028
ISSN: 0009-286X, 1522-2640
KITopen ID: 1000058977
HGF-Programm 34.14.02; LK 01
Erschienen in Chemie - Ingenieur - Technik
Band 88
Heft 9
Seiten 1261-1261
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