초록

A combustion control method for use in a catalytic combustion system having

대표청구항 ▼

[ What is claimed is:] [1.]1. A catalytic combustion system comprising:(a) a gaseous mixture inlet port, located at the upstream side of said catalytic combustion system, for the entrance of a fuel-air mixture;(b) an exhaust gas outlet port, located at the downstream side of said catalytic combustio

[ What is claimed is:] [1.]1. A catalytic combustion system comprising:(a) a gaseous mixture inlet port, located at the upstream side of said catalytic combustion system, for the entrance of a fuel-air mixture;(b) an exhaust gas outlet port, located at the downstream side of said catalytic combustion system, for the exit of an exhaust gas;(c) a primary constant combustion chamber in which a first catalyst body is disposed, said catalyst body having a porous base material with numerous communicating holes that supports thereon an oxidation catalyst;(d) an ignition unit located upstream from the first catalyst body;(e) a preheat burner located upstream from the first catalyst body;(f) a secondary supply port, located downstream of said primary combustion chamber, for the supply of a gaseous mixture or air; and(g) a secondary combustion chamber located downstream of said secondary supply port;wherein an excess air ratio of said primary constant combustion chamber is initially set above 1 and after the rate of combustion of said secondary combustion chamber exceeds a given level, combustion is made to take place, with the excess air ratio of said primary combustion chamber set below 1, andwith the excess air ratio set below 1, combustion is not complete in the primary combustion chamber.