发明授权
- 专利标题: Removal of hydrogen cyanide from synthesis gas
- 专利标题(中): 从合成气中除去氰化氢
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申请号: US12513077申请日: 2007-10-29
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公开(公告)号: US08128898B2公开(公告)日: 2012-03-06
- 发明人: Braam Van Dyk , John Marriott , Bavanethan Pillay , Hendrik Johannes Van Der Westhuizen , Ronél Combrink , Trevor David Phillips , Denise Louisette Venter , André´ Peter Steynberg
- 申请人: Braam Van Dyk , John Marriott , Bavanethan Pillay , Hendrik Johannes Van Der Westhuizen , Ronél Combrink , Trevor David Phillips , Denise Louisette Venter , André´ Peter Steynberg
- 申请人地址: ZA Johannesburg
- 专利权人: Sasol Techonology (Proprietary) Limited
- 当前专利权人: Sasol Techonology (Proprietary) Limited
- 当前专利权人地址: ZA Johannesburg
- 代理机构: Pillsbury Winthrop Shaw Pittman LLP
- 优先权: ZA2006/09076 20061031
- 国际申请: PCT/IB2007/054378 WO 20071029
- 国际公布: WO2008/053421 WO 20080508
- 主分类号: B01D53/14
- IPC分类号: B01D53/14 ; C01C3/02 ; C07C253/00
摘要:
A process (10) for at least partially removing hydrogen cyanide from synthesis gas includes feeding a synthesis gas (30) containing hydrogen cyanide to a gas-liquid contacting stage (18) and, in the gas-liquid contacting stage (18), contacting the synthesis gas with an aqueous washing solution (36) comprising at least one dissolved metal salt, with metal cations of the metal salt being capable of forming metal cyanide complexes and/or metal cyanide precipitates, and weak acid anions of the metal salt serving to buffer the pH of the washing solution in a range between 6 and 10. Hydrogen cyanide is washed from the synthesis gas by the washing solution to form a treated synthesis gas (38) and a spent washing solution (40). From time to time or continuously, at least a portion of the spent washing solution is withdrawn from the gas-liquid contacting stage. The treated synthesis gas (38) is also withdrawn from the gas-liquid contacting stage.
公开/授权文献
- US20100061905A1 REMOVAL OF HYDROGEN CYANIDE FROM SYNTHESIS GAS 公开/授权日:2010-03-11
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