Abstract
A high emphasis is placed on disposal of waste gas from plant because of rise of environmental consciousness. A catalytic combustion deodorizer that has an advantage on the running cost is getting a lot of attention. This work reports numerical simulation of catalytic combustion of CR_4/air mixtures on palladium catalysts in honeycomb used in deodorizer. The numerical model has the elementary reaction kinetics considering nine surface chemical species. As the result, details of catalytic combustion in a channel - temperature and mole fraction in the gas phase, temperature and heat release rate at the catalyst, -are obtained.