公开(公告)号：EP1115471B1

公开(公告)日：2009-10-07

申请号：EP99930360.5

申请日：1999-06-16

申请人： EMERACHEM LLC

发明人： CAMPBELL, Larry, E. ,  WAGNER, Gregory, J.

IPC分类号： B01D53/48 ,  B01D53/50 ,  B01D53/52 ,  B01D53/62 ,  B01D53/96 ,  B01J21/00 ,  B01J21/20 ,  B01J23/00 ,  B01J23/38 ,  B01J23/54 ,  B01D53/86

CPC分类号： B01D53/8603 ,  B01D53/8609 ,  B01D53/8612 ,  B01D53/8615 ,  B01D2257/30 ,  B01D2257/302 ,  B01D2257/304 ,  B01J23/40 ,  B01J23/42 ,  B01J23/56 ,  B01J23/63 ,  F23J2215/20 ,  F23J2219/10 ,  F23J2219/60 ,  Y02C10/08

摘要： A process and composition are provided for removing contaminants, such as sulfur dioxide and hydrogen sulfide, out of exhaust gases by contacting the contaminated exhaust gas with a catalyst/sorber composition comprising noble metal components and a sorber component, such as oxides of Ti, Zr, Hf, Ce, Al, Si and mixtures thereof, so as to remove the contaminants out of the exhaust gas. The contaminant-loaded catalyst/sorber composition is regenerated via contact with a mixture of an inert gas, such as nitrogen, and a reducing gas, such as hydrocarbons. The catalyst/sorber composition may also contain a modifier, such as Cu, Ag or Bi, which tends to promote the release of the sulfur contaminant off the contaminant-loaded catalyst/sorber composition as sulfur dioxide, rather than the hydrogen sulfide. The catalyst/sorber composition also promotes the oxidation of carbon monoxide in the exhaust gas.

公开(公告)号：EP1251936B1

公开(公告)日：2005-03-30

申请号：EP00905583.1

申请日：2000-01-11

申请人： EMERACHEM LLC

发明人： CAMPBELL, Larry, E. ,  EPLING, William, Shelbourne, Jr. ,  PARKS, James, Edgar, II ,  WAGNER, Gregory, J.

IPC分类号： B01D53/94 ,  B01D53/86 ,  B01D53/96 ,  B01J23/58 ,  B01J23/96 ,  B01J38/10

CPC分类号： F01N3/2066 ,  B01D53/8609 ,  B01D53/8612 ,  B01D53/8628 ,  B01D53/8631 ,  B01D53/9422 ,  B01D53/9431 ,  B01D2255/1021 ,  B01D2255/2027 ,  B01D2255/20738 ,  B01D2255/20746 ,  B01D2255/20753 ,  B01D2255/20761 ,  B01D2255/20769 ,  B01J23/58 ,  B01J23/78 ,  B01J23/8946 ,  B01J35/0006 ,  F01N3/0233 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/085 ,  F01N3/0878 ,  F01N3/0885 ,  F01N3/2093 ,  F01N13/009 ,  F01N13/0097 ,  F01N13/011 ,  F01N2570/04 ,  F01N2570/14 ,  F01N2610/03 ,  Y02A50/2325 ,  Y02A50/2344 ,  Y02T10/24

摘要： The process contacts a gaseous stream (1) containing gaseous sulfur compounds and NOx with a catalyst system of either: an oxidation catalyst disposed on a high surface area support or an absorber material; or of discrete beds of a catalyst/sorber (A) comprising a noble metal catalyst component, a metal oxide sorber component, and a modifier; and an oxidation catalyst (B) disposed on a high suface area support or an absorber material. The sulfur and NOx compounds are removed from the exhaust (1) into catalyst system and retained therein to remove and retain the sulfur and NOx compounds. The reducing and regenerating gas (8) removes and retains said sulfur compounds and NOx is restored. In the two bed system, the catalyst system is regenerated with a regenerating gas (8) flowing in a direction reversed from direction of the exhaust gas (1).

摘要翻译： 该方法使含有气态硫化合物和NO x的气态物流（1）与催化剂体系接触：设置在高表面积载体上的氧化催化剂或吸收剂材料; 或包含贵金属催化剂组分，金属氧化物吸附剂组分和改性剂的催化剂/吸附剂（A）的离散床; 和设置在高表面积载体或吸收剂材料上的氧化催化剂（B）。 将硫和NOx化合物从排气（1）中除去到催化剂体系中并保留在其中以除去并保留硫和NOx化合物。 还原和再生气体（8）除去并保留所述硫化合物并恢复NOx。 在两床系统中，催化剂系统用再生气体（8）再生，再生气体（8）在与排气（1）的方向相反的方向上流动。