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    • 9. 发明授权
    • Gasification of soot trapped in a particulate filter under reducing conditions
    • 在还原条件下将烟尘气化在微粒过滤器中
    • US07614214B2
    • 2009-11-10
    • US11493120
    • 2006-07-26
    • Jiyang Yan
    • Jiyang Yan
    • F01N3/00
    • F01N3/0253F01N3/035F01N3/0814F01N3/0821F01N3/0842F01N3/106F01N3/2066F01N13/0097F01N2240/30F01N2560/026F01N2560/06F01N2560/14F01N2610/03Y02A50/2325Y02T10/24
    • A power generation system comprises a diesel engine, a diesel particulate filter and a LNT configured to receive the exhaust from the DPF. The DPF is provided with a catalyst coating that is functional to catalyze methanation of trapped soot with H2 contained in the exhaust. Preferably, the catalyst has little or no oxygen storage capacity. The system is configured to regenerate the LNT by providing syn gas to the exhaust in rich regeneration phases. The syn gas-containing exhaust passes through the DPF and then the LNT. Within the DPF, the syn gas-containing exhaust removes soot be methanation and other soot gasification reactions, thus reducing or eliminating the need to reduce the DPF by other means. Soot gasification is preferred over soot combustion in that soot gasification avoids the destructive high DPF temperatures associated with soot combustion.
    • 发电系统包括柴油发动机,柴油微粒过滤器和被配置为接收来自DPF的排气的LNT。 DPF具有催化剂涂层,该催化剂涂层用于催化捕集的烟灰甲烷化,其中废气中含有H2。 优选地,催化剂具有很少的或没有储氧能力。 该系统被配置为通过在富集再生阶段向排气提供合成气来再生LNT。 含合成气的废气通过DPF,然后通过LNT。 在DPF中,含合成气的废气除去烟灰是甲烷化和其他烟灰气化反应,从而减少或消除了通过其他方式减少DPF的需要。 烟灰气化优于烟灰燃烧,因为烟灰气化避免了与烟灰燃烧相关的破坏性高的DPF温度。