公开(公告)号：US6015285A

公开(公告)日：2000-01-18

申请号：US16835

申请日：1998-01-30

申请人： Jon G. McCarty ,  Victor L. Wong ,  Bernard J. Wood

发明人： Jon G. McCarty ,  Victor L. Wong ,  Bernard J. Wood

IPC分类号： B01J19/24 ,  B01J23/44 ,  B01J35/00 ,  B01J35/04 ,  F23C6/04 ,  F23C13/00 ,  F23R3/40 ,  B01J8/02

CPC分类号： F23C13/00 ,  B01J19/2485 ,  B01J23/44 ,  B01J35/0006 ,  B01J35/04 ,  F23C13/08 ,  F23C6/04 ,  F23R3/40

摘要： A process for combustion of fuel in which oxygen-containing gas is mixed with a fuel to form a combustible mixture which is then contacted in a first zone with a first zone combustion catalyst comprising PdO disposed on a support at reaction conditions sufficient to combust a portion of the fuel and produce a first zone combustion catalyst temperature no greater than about 800.degree. C. The partially combusted fuel from the first zone is then contacted in a second zone with a second zone combustion catalyst. Supports for the first zone combustion catalyst include La.sub.2 O.sub.3 -stabilized .gamma.-Al.sub.2 O.sub.3, La-stabilized .gamma.-Al.sub.2 O.sub.3, Ce-stabilized .gamma.-Al.sub.2 O.sub.3, Ba-stabilized .gamma.-Al.sub.2 O.sub.3, and La.sub.2 0.sub.3 -11Al.sub.2 O.sub.3 hexa-aluminate. Second zone combustion catalysts include La.sub.0.5 Sr.sub.0.5 MnAl.sub.11 O.sub.19, PdO on La.sub.2 O.sub.3 -11Al.sub.2 O.sub.3 hexa-aluminate, and La.sub.0.2 Sr.sub.0.8 MnAl.sub.11 O.sub.19.

摘要翻译： 一种用于燃烧燃料的方法，其中将含氧气体与燃料混合以形成可燃混合物，然后在第一区域与第一区域燃烧催化剂接触，该第一区域燃烧催化剂包含设置在载体上的PdO，该反应条件足以燃烧部分 的燃料，并产生不大于约800℃的第一区燃烧催化剂温度。然后来自第一区的部分燃烧的燃料在第二区与第二区燃烧催化剂接触。 支持第一区燃烧催化剂包括La2O3稳定的γ-Al2O3，La稳定的γ-Al2O3，Ce稳定的γ-Al2O3，Ba稳定的γ-Al2O3和La203-11Al2O3六铝酸盐。 第二区燃烧催化剂包括La0.5Sr0.5MnAl11O19，LaO3-11Al2O3六铝酸盐上的PdO和La0.2Sr0.8MnAl11O19。