PURPOSE: To carry out the regeneration of a desulfurizing agent by heat desorption without deteriorating capacities thereof, by supplying steam to the heat desorbing and regenerating tower of a dry waste gas desulfurization apparatus to desorb a gas from the desulfurizing agent.
CONSTITUTION: Steam 12 is supplied in the vicinity of the boundary part between the heating part 7 and the cooling part 9 of a dry waste gas desulfurization apparatus and raised to the side of the heating part while uniformly dispersed by a dispersing plate 13 having an L shaped cross area. By this mechanism, the desorbed gas desorbed from a desulfurizing agent 3 can be prevented from being diffused to the side of the cooling part 9 and can be prevented to be again readsorbed by the desulfurizing agent 3. As the result, the SO2 adsorbed desulfurizing agent is regenerated by heat desorption without generating the combustion of the desulfurizing agent and deteriorating the capacities of the regenerated desulfurizing agent.
ARASHI NORIO
HISHINUMA TAKAO
NISHIMURA TSUKASA
BABCOCK HITACHI KK