Emission treatment system

Emission treatment system

  • CN 101,918,112 B
  • Filed: 12/12/2008
  • Issued: 06/03/2015
  • Est. Priority Date: 12/12/2007
  • Status: Active Grant
First Claim
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1. , for the treatment of the discharge treating system of waste gas streams coming from engine, this waste gas streams comprises NO xand particle, this discharge treating system comprises:

  • Comprising NO 2waste gas streams path in be positioned at the diesel oxidation catalyst of engine downstream, this diesel oxidation catalyst contains following catalyst;

    for the working range of 90% of described diesel oxidation catalyst, and catalyst contained by described diesel oxidation catalyst does not substantially produce additional NO effectively in by the waste gas streams after this diesel oxidation catalyst 2;

    Be positioned at the process for catalytic soot filters in described diesel oxidation catalyst downstream, this process for catalytic soot filters comprises oxidation catalyst composition on the filter, and this process for catalytic soot filters effectively optimizes NO and the NO leaving this smoke filter 2ratio;

    With Be positioned at the NO in this process for catalytic soot filters downstream xreducing catalyst.

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