Sulfur occlusion catalyst and apparatus for cleaning exhaust gas
    8.
    发明专利
    Sulfur occlusion catalyst and apparatus for cleaning exhaust gas 有权
    SULFUR OCCLUSION催化剂和清洁排气的装置

    公开(公告)号:JP2008284487A

    公开(公告)日:2008-11-27

    申请号:JP2007133156

    申请日:2007-05-18

    摘要: PROBLEM TO BE SOLVED: To provide a sulfur occlusion catalyst which keeps its excellent sulfur occlusion performance even when the temperature of exhaust gas is low while holding down a sharp increase in the material cost thereof.
    SOLUTION: The sulfur occlusion catalyst 2 is provided with: a catalyst carrier; a catalytic metal which is carried by the catalyst carrier and oxidizes SO
    2 into SO
    3 ; and a sulfur occlusion material which is also carried by the catalyst carrier and absorbs a sulfur component. The sulfur occlusion catalyst 2 has an exhaust gas inlet-side high-concentration part 2A where the sulfur occlusion material of high concentration is carried by the catalyst carrier and an exhaust gas outlet-side low concentration part 2B where the sulfur occlusion material of the concentration lower than that of the exhaust gas inlet-side high-concentration part 2A is deposited on the catalyst carrier.
    COPYRIGHT: (C)2009,JPO&INPIT

    摘要翻译: 待解决的问题:提供即使当废气温度低时也保持其优异的硫阻塞性能的硫阻塞催化剂,同时抑制其材料成本的急剧增加。 解决方案:硫吸收催化剂2具有:催化剂载体; 一种催化金属,由催化剂载体携带并将SO 2 SBS 2 氧化成SO 3 SB 3; 和硫吸收材料,其也由催化剂载体携带并吸收硫成分。 硫阻塞催化剂2具有排气入口侧高浓度部分2A,其中高浓度的硫吸收材料由催化剂载体和排气出口侧低浓度部分2B承载,其中浓度为的硫阻塞材料 低于排气入口侧高浓度部分2A的氧化物沉积在催化剂载体上。 版权所有(C)2009,JPO&INPIT

    Exhaust gas cleaning apparatus
    10.
    发明专利
    Exhaust gas cleaning apparatus 有权
    排气清洁装置

    公开(公告)号:JP2008136941A

    公开(公告)日:2008-06-19

    申请号:JP2006325756

    申请日:2006-12-01

    摘要: PROBLEM TO BE SOLVED: To increase SO x occlusion amount of an occlusion catalyst disposed at an upstream side of NO x occlusion reduction catalyst, and to increase NO x occlusion amount in a low temperature region. SOLUTION: The occlusion catalyst 3 comprises: a carrier base material 30 which is formed of at least one member selected from among Al 2 O 3 , CeO 2 , ZrO 2 , TiO 2 and zeolite and has a specific area of 30 m 2 /g or more; and a coat layer 31 formed by carrying occlusion material occluding NO x and SO x and a noble metal on carrier powder comprising at least one member selected from among Al 2 O 3 , CeO 2 , ZrO 2 , TiO 2 and zeolite. The large specific area of the carrier base material 30 greatly increases the carrying amount of occlusion material occluding NO x and SO x . COPYRIGHT: (C)2008,JPO&INPIT

    摘要翻译: 待解决的问题:为了提高设置在NOS SB阻塞还原催化剂上游侧的阻塞催化剂的SO x 阻塞量,并增加NO SB > x 阻塞量。 解决方案:阻挡催化剂3包括:载体基材30,其由至少一种选自Al 2 O 3,SBO 3,SBO 3, 2 ,ZrO 2 SBB,TiO 2 SBB和沸石,比表面积为30m 2 / SP / g以上; 以及涂覆层31,其通过将包含NO SB SB和X SB SB的X射线吸附材料和载体粉末上的贵金属构成,所述载体粉末包含至少一种选自Al SB 3,SBO 3,SBO 2,SBO 2,SBO 2,SBO 2和SBB。 载体基材30的较大的比表面积大大地增加了阻塞材料的吸留量(NO x 和SO x )。 版权所有(C)2008,JPO&INPIT