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    Method for purification of exhaust gas from internal-combustion engine
    9.
    发明授权
    Method for purification of exhaust gas from internal-combustion engine 有权
    内燃机废气净化方法

    公开(公告)号：US09429055B2

    公开(公告)日：2016-08-30

    申请号：US11826365

    申请日：2007-07-13

    申请人： Masanori Ikeda

    发明人： Masanori Ikeda

    IPC分类号： F01N3/035 ,  F01N3/025 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01D53/94 ,  B01J35/00 ,  B01J37/02 ,  F01N3/08 ,  F01N13/00 ,  F01N3/20

    CPC分类号： F01N3/035 ,  B01D53/944 ,  B01D2251/208 ,  B01D2255/91 ,  B01J23/44 ,  B01J35/0006 ,  B01J37/0244 ,  F01N3/0253 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/2033 ,  F01N13/0097 ,  F01N2510/0682 ,  F01N2610/03

    摘要： Provided is a method for extending a temperature range enabling combustion of high concentration hydrocarbon, or for rapidly supplying high temperature gas to a later stage catalyst. Provided is a method for purification of exhaust gas from an internal-combustion engine comprised by: providing a temperature-raising catalyst for exhaust gas from an internal-combustion engine in an exhaust gas passage of the internal-combustion engine, along flow of said exhaust gas, at the upstream side of a purification catalyst for said exhaust gas; and introducing hydrocarbon in an amount of 1,000 to 40,000 ppm, as converted to methane, from the upstream side of the temperature-raising catalyst, wherein said temperature-raising catalyst has catalytically active components supported onto a refractory three-dimensional structure, wherein concentration of said components has a gradient such that said concentration gradually becomes lower from the inflow side toward the outflow side of said exhaust gas.

    摘要翻译： 本发明提供一种延长能够燃烧高浓度烃的温度范围，或将高温气体快速供给后期催化剂的方法。 本发明提供一种内燃机的废气净化方法，其特征在于，在所述内燃机的排气通路中，由内燃机的排气通路内的内燃机提供用于排气的升温催化剂， 在用于所述废气的净化催化剂的上游侧的气体; 并且从升温催化剂的上游侧引入从甲烷转化为1,000〜40,000ppm的烃，其中所述升温催化剂具有负载在耐火三维结构上的催化活性组分，其中浓度 所述组分具有使所述浓度从所述废气的流入侧向流出侧逐渐变低的梯度。