Title: High-temp two-step desulphurization process for gas
Application Number: 91107444 Application Date: 1991.07.10
Publication Number: 1068356 Publication Date: 1993.01.27
Approval Pub. Date: Granted Pub. Date: 1997.04.02
International Classifi-cation: C10K1/20
Applicant(s) Name: Tongji Univ. Address: 200092
Inventor(s) Name: Wen Wang
Attorney & Agent: TIAN ZHENWEI
Abstract:
     The two-step desulphurization of high-temp. coalgas is especially applicable to power system combosed of fluidized bed coal gasification furnace and combined cyclic power generation equipment. This invention adopts a combined two-stage dry desulphurization equipments: the first stage is a primary desulphurization equipment using iron smelting waste mud of steel works as desulphurizing agent, and the secondary stage is a fine desulphurization equipment using sintered ironzinc as desulphurizing agent. The two-stage equipments are used in series. The rate of desulphurization is as high as above 99 percent. The concentration of hydrogen sulphide of exit coal gas is lower than 1 ppm. The desulphurizing agent may be regenerated and reused many times.
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