公开(公告)号：US08128898B2

公开(公告)日：2012-03-06

申请号：US12513077

申请日：2007-10-29

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

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

IPC分类号： B01D53/14 ,  C01C3/02 ,  C07C253/00

CPC分类号： B01D53/78 ,  B01D53/54 ,  B01D2251/60 ,  B01D2257/408 ,  C10K1/105 ,  C10K1/106 ,  C10K1/108

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 From time to time or continuously, at least a portion of the spent washing solution is withdrawn from the gas-liquid contacting stage. The treated synthesis gas (38) is also withdrawn from the gas-liquid contacting stage.

摘要翻译： 用于从合成气中至少部分去除氰化氢的方法（10）包括将含有氰化氢的合成气（30）进料到气 - 液接触级（18）中，并且在气 - 液接触级（18）中， 所述合成气与包含至少一种溶解的金属盐的金属盐的金属阳离子和能够形成金属氰化物络合物和/或金属氰化物沉淀物的含水洗涤溶液（36）以及金属盐的弱酸性阴离子用作 将洗涤溶液的pH缓冲在6至10之间的范围内。通过洗涤溶液从合成气中洗涤氰化物以形成处理过的合成气（38）和废洗涤溶液（40）。 不时或连续地，至少一部分废洗涤溶液从气 - 液接触阶段中排出。 经处理的合成气（38）也从气 - 液接触阶段排出。

公开(公告)号：US20100061905A1

公开(公告)日：2010-03-11

申请号：US12513077

申请日：2007-10-29

申请人： Braam van Dyk ,  John Marroptt ,  Bavanethan Pillay ,  Hendrik Johannes van Der Westhuizen ,  Ronél Combrink ,  Trevor David Phillips ,  Denise Louisette Venter ,  André Peter Steynberg

发明人： Braam van Dyk ,  John Marroptt ,  Bavanethan Pillay ,  Hendrik Johannes van Der Westhuizen ,  Ronél Combrink ,  Trevor David Phillips ,  Denise Louisette Venter ,  André Peter Steynberg

IPC分类号： B01D53/54

CPC分类号： B01D53/78 ,  B01D53/54 ,  B01D2251/60 ,  B01D2257/408 ,  C10K1/105 ,  C10K1/106 ,  C10K1/108

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.

摘要翻译： 用于从合成气中至少部分去除氰化氢的方法（10）包括将含有氰化氢的合成气（30）进料到气 - 液接触级（18）中，并且在气 - 液接触级（18）中， 所述合成气与包含至少一种溶解的金属盐的金属盐的金属阳离子和能够形成金属氰化物络合物和/或金属氰化物沉淀物的含水洗涤溶液（36）以及金属盐的弱酸性阴离子用作 将洗涤溶液的pH缓冲在6至10之间的范围内。通过洗涤溶液从合成气中洗涤氰化物以形成处理过的合成气（38）和废洗涤溶液（40）。 不时或连续地，至少一部分废洗涤溶液从气 - 液接触阶段中排出。 经处理的合成气（38）也从气 - 液接触阶段排出。