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Capturing CO2 from Biogas Plants
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes.
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Energy Processes. Vattenfall AB, Sweden.
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2017 (English)In: 13th International Conference on Greenhouse Gas Control Technologies, GHGT-13, 14-18 November 2016, Lausanne, Switzerland, Elsevier, 2017, Vol. 114, p. 6030-6035Conference paper, Published paper (Refereed)
Abstract [en]

As a renewable energy, biogas produced from anaerobic digestion and landfill is playing a more and more important role in the energy market. Capturing CO2 from biogas can result in a negative CO2 emission. Depending on how biogas is utilized, there are different routes to capture CO2. A biogas plant that uses raw biogas to produce power and heat can be retrofitted by integrating CO2 capture. In order to identify the best option, three retrofits were compared from both technical and economic perspectives, including SYS-I, which captures CO2 from raw gas and produces biomethane instead of electricity and heat, SYS-II, which captures CO2 using MEA-based chemical absorption after the combustion of raw gas, and SYS-III, which captures CO2 by using oxy-fuel combustion of the raw gas. In general, SYS-I can achieve the highest profit and shortest payback time, mainly due to the high price of biomethane. SYSII and SYS-III are clearly influenced by carbon credit. In order to have positive profits for the retrofits of SYS-II and SYS-III, carbon credit needs to exceed 750SEK (or 100USD)/ton CO2 and 113 SEK (or 15USD)/ton CO2 respectively.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 114, p. 6030-6035
Series
Energy Procedia, ISSN 1876-6102 ; 114
Keywords [en]
BECCS, biogas, carbon credit, chemical absorption, negative CO2 emission, oxy-fuel combustion
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-216692DOI: 10.1016/j.egypro.2017.03.1738ISI: 000419147306027Scopus ID: 2-s2.0-85029664553OAI: oai:DiVA.org:kth-216692DiVA, id: diva2:1153095
Conference
13th International Conference on Greenhouse Gas Control Technologies, GHGT 2016, Lausanne, Switzerland, 14 November 2016 through 18 November 2016
Note

QC 20171027

Available from: 2017-10-27 Created: 2017-10-27 Last updated: 2018-01-29Bibliographically approved

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CiteExportLink to record
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  • apa
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