METHOD AND DEVICE FOR ADSORPTIVE TREATMENT OF FLUID

摘要

PURPOSE:To adsorb away and recover stably an org. solvent from gas even if the concn. of the org. solvent fluctuates with the lapse of time by treating the gas contg. the org. solvent with a fixed bed type absorption device and a multistage fluidized bed type adsorption device. CONSTITUTION:The gas 9 contg. an org. solvent such as freon produced from a dry cleaning device 15 is sucked with a fan 7 and is supplied to a fixed bed type adsorption device 2. The activated carbon as an adsorbent is packed therein, and when the gas contg. the org. solvent in a high concn. is conducted to the device, the activated carbon adsorbs the solvent and when the concn. is decreased, the activated carbon desorbs the adsorbed org. solvent. The gas having always a uniform and specified concn. is discharged from the device 2 and is conducted to the next multistage fluidized bed type adsorption device 1, where the org. solvent contained in the gas is adsorbed away by activated carbon. The activated carbon in the device 1 forms a circulating bed for the adsorbent. The activated carbon 10 on which the org. solvent is thoroughly adsorbed is conducted to a regenerator 4 where the carbon is subjected to heating and desorbing. The regenerated carbon circulates in the device 1. The desorbed org. solvent is recovered for reutilization in the dry cleaning.