Journal
BIOFUELS-UK
Volume 8, Issue 6, Pages 643-650Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/17597269.2015.1118782
Keywords
Calcium looping; biomass gasification; hydrogen-enriched gas; in-situ carbon dioxide capture
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Funding
- Natural Science and Engineering Research Council (NSERC) of Canada [400495]
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This paper presents experimental studies of circulating fluidized bed based calcium looping gasification (CFB-CLG) system for producing hydrogen-enriched gas from biomass. The merit of this system is that it captures carbon dioxide (CO2) during the process using the inexpensive and easily available sorbent calcium oxide (CaO). The process also regenerates the sorbent internally and produces a relatively pure stream of CO2. A laboratory scale calcium looping gasification system based on a circulating fluidized bed was developed and tested. Experiments conducted to gasify sawdust in the CFB-CLG system shows that it could produce a gas with 81% hydrogen and CO2 as low as 5%. Exergy analysis of the calcium looping system is done and the efficiency is 78.77%.
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