C - Chemistry – Metallurgy – 10 – K
Patent
C - Chemistry, Metallurgy
10
K
C10K 1/20 (2006.01) B01D 53/52 (2006.01) B01D 53/73 (2006.01) C01B 17/50 (2006.01) C01F 11/10 (2006.01) C01F 11/18 (2006.01)
Patent
CA 2470015
An alternative process whereby the calcium sulphide formed in an IGCC system from calcium oxide and/or calcium carbonate can be safely and more or less quantitatively converted by reaction with carbon dioxide to calcium carbonate and/or calcium oxide together with sulphur dioxide. The calcium oxide and/or calcium carbonate can be reused in the IGCC system, and the sulphur dioxide can be converted to a useful product, such as sulphuric acid. One result of this process is that since the furnace ashes do not contain a significant level of calcium sulphide, they can be safely disposed of in a land fill site.
Anthony Edward J.
Qiu Kuanrong
Her Majesty The Queen In Right Of Canada As Represented By The M
Shapiro Cohen
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