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Modeling of Biomass Gasification in a Downdraft Gasifier with Integrated Tar Adsorption

Title data

Gradel, Andy ; Honke, Robert ; Wünning, Joachim Alfred ; Plessing, Tobias ; Jess, Andreas:
Modeling of Biomass Gasification in a Downdraft Gasifier with Integrated Tar Adsorption.
In: Chemical Engineering & Technology. Vol. 42 (2019) Issue 9 .
ISSN 1521-4125
DOI: https://doi.org/10.1002/ceat.201800640

Abstract in another language

Thermal gasification of biomass is known for its capabilities in flexible and decentral power station applications for cogeneration. However, the product gas contains tar compounds adversely for a stable operation. Integrated tar adsorption in a subsequent cooled section is therefore an option to reduce the tar pollution. The char coal, used here as adsorption agent, is formed by biomass pyrolysis in the gasifier. A kinetic model is proposed, considering the kinetics of all main reactions as well as heat and mass transport phenomena. Results are presented for axial temperature profiles, gas compositions, and the gas purity at different air-to-fuel ratios. The resulting output mass flows could indicate a requirement on the adsorption capacity of at least 0.3 g g−1 for the activated char coal.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Biomass gasification; Downdraft gasifier; Kinetic modeling; Tar adsorption; Upscaling
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Chemical Engineering
Faculties > Faculty of Engineering Science > Chair Chemical Engineering > Chair Chemical Engineering - Univ.-Prof. Dr.-Ing. Andreas Jess
Research Institutions > Research Units > ZET - Zentrum für Energietechnik
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
600 Technology, medicine, applied sciences > 600 Technology
600 Technology, medicine, applied sciences > 620 Engineering
600 Technology, medicine, applied sciences > 660 Chemical engineering
Date Deposited: 31 Jul 2019 10:44
Last Modified: 31 Jul 2019 10:44
URI: https://eref.uni-bayreuth.de/id/eprint/51680