CONTROL OF CONCENTRATION RATIO IN CONCENTRATION TYPE DEODORIZER

摘要

PURPOSE: To control concentrating ratio of gas concn. of the heated air for regeneration by circulating a part of the heated air for regeneration fed into a regenerating zone from a cooling zone through a heating zone. CONSTITUTION: After air for cooling is passed through a cooling zone 4, it is heated to a specified temp. by means of a heater 6 and is introduced into a regenerating zone 3. The regenerated gas going out from the regenerating zone 3 is divided at the rear stage of a fan 8 and a part thereof is returned to the heater 6 and is circulated. It is possible thereby to increase the amt. of heated air for regeneration without being restricted by the concentrating ratio and a perfect regeneration is performed. In addition, the amt. of circulating air is adjusted by means of an air flow adjusting damper 10 arranged in a flow path between the cooling zone 4 and the heater 6 and an air flow adjusting damper 11 arranged in a branched path on the downstream of the fan 8.