SO2 removal from flue gas with dry limestone |
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| Affiliation: | 1. State Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China;2. School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China;1. State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China;2. Research & Development Center of China Academy of Launch Vehicle Technology, Beijing 100076, China |
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| Abstract: | SO2 removal from flue gas with an efficiency of over 90% can be achieved by the furnace limestone injection (FLI) process in combination with the recently developed ash recycle activation (ARA) process. The ARA process uses a mixture of fly ash and CaO sorbent that comes out of the furnace for further SO2 removal. The dust is separated from the flue gas, treated with low pressure steam and then added to the flue gas again. The activation of the Ca compounds occurs during steam treatment. Capillary condensation occurs and aqueous electyrolyte solution reactions within the particle become effective. A differential particle model is formulated. |
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