Catalytic Converter Heating by Reversible Chemical Reaction of CaO/Ca(OH)2. Prototype Heater with Exothermic Hydration Reaction.

Feasibility study of CaO/Ca(OH)2 reverible exothermic reaction has been done as a source for heating three-way catalyst of a car, to decrease electric load demand. In this paper experimental results of reversible reaction and basic prototype heater with exothermic hydration reaction to heat catalyst are described. It has been clarified that exothermic reaction itself has plantiful amount of heat and a fast reaction rate. For practical use, it is necessary to increase heat conduction between reaction tubes and radiating fins, and to decrease heat capacity of a whole system.