C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
23/343
C01B 17/00 (2006.01) B01J 8/00 (2006.01) C10K 1/20 (2006.01) C10K 1/26 (2006.01) C10K 1/30 (2006.01)
Patent
CA 1146338
ABSTRACT LOW SULFUR CONTENT HOT REDUCING GAS PRODUCTION USING CALCIUM OXIDE DESULFURIZATION WITH WATER RECYCLE A process and apparatus for producing a low sulfur content, hot reducing gas by desulfurizing hot reducing gas by contacting the sulfur-bearing hot reducing gas with a bed of a particulate calcium oxide desulfurizing agent to thereby produce a product gas stream and a byproduct calcium sulfide composition, and then recovering sulfur from the calcium sulfide composition by contact- ing the calcium sulfide composition with hot liquid water at a temperature and corresponding pressure sufficient to maintain steam in the system and to thereby convert the sulfide to calcium hydroxide and hydrogen sulfide and to produce a liquid water stream containing sulfur, and then combining the sulfur-containing water stream with a fresh water stream and recycling this water stream for contacting the calcium sulfide composition. Preferably water vapor produced in the contacting step is condensed and returned to the system in the final stage of contacting the calcium sulfide composition with hot liquid water.
377849
Feinman Jerome
Mcgreal Joseph E. Jr.
Borden Ladner Gervais Llp
Uss Engineers And Consultants Inc.
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