CATALYTIC SYSTEM FOR COMBUSTION OF HIGH PRESSURE METHANE BASED FUEL AND COMBUSTION METHOD USING THE SAME

摘要

PURPOSE:To efficiently remove harmful components such as CO, NOx, unburned hydrocarbon or the like, by combining a front stage catalyst bed containing Pd and Pt as active components, a middle stage catalyst bed containing Pt as an active component and a post stage catalyst bed containing Pt and Pd as active components. CONSTITUTION:The front stage catalyst bed containing Pd and Pt or Pd, Pt and Ni oxide as active components provided on an inlet side, the middle stage catalyst bed containing Pt as an active component provided to a middle part and the final post stage catalyst bed containing Pt and Pd as active components provided on a gas outlet side are combined to form a catalytic system. In this case, the total supporting amount of Pd and Pt supported by the catalytic system is necessarily set to 10-100g/1l of a carrier volume. This catalytic system is effective for the catalytic combustion of natural gas composed of lower hydrocarbons.