APPARATUS FOR ADSORBING AND DESORBING TREATMENT OF ORGANIC SOLVENT-CONTAINING GAS

摘要

PURPOSE:To sufficiently enhance the concn. of the org. solvent desorbed in a regeneration process by forming a circulation path circulating desorbed gas to introduce the same into the first regenerating region as regenerating gas and circulating a part of the desorbed gas in the circulation path to supply the same to a condenser. CONSTITUTION:Raw gas containing an org. solvent is introduced into a raw gas treatment region 11 to adsorb the org. solvent on an adsorbing body 10 and the desorbed gas containing the org. solvent desorbed from the adsorbing body 10 in the first regenerating region 13 is introduced into a condenser 8 to recover the org. solvent contained in the desorbed gas. At this time, a circulation path circulating the aforementioned desorbed gas to introduce the same into the region 13 as regenerating gas is formed and a part of the desorbed gas in the circulation path is circulated and supplied to the condenser 8. The regenerating gas desorbing the org. solvent from the adsorbing body 10 is introduced into a re-adsorbing region 12. As a result, the concn. of the org. solvent desorbed in the regeneration process is sufficiently enhanced and the org. solvent can efficiently be recovered.