Chlorine recovery method

The invention discloses a chlorine recovery method. Residual gas discharged in the production process is absorbed by utilizing an inert absorbent, wherein the introduction amount of the residual gas is 100 to 160m per hour, the inert absorbent is sent into a desorption tower to be desorbed after the absorption is completed, the number of tower plates of the desorption tower is 15 to 20, a reflux ratio is 1.1, the chlorine is discharged from a tower top and enters a storage tank, and residual liquid is discharged from the tower bottom and harmlessly treated. By adopting the chlorine recovery method, chlorine in the waste gas can be effectively recovered, the corporate production cost can be decreased, and the production pollution is reduced. 本发明公开了种氯气回收方法，利用惰性吸收剂对生产过程中排出的残留气体，进行吸收，残留气体的通入量为100-160立方每小时，吸收完成后，将惰性吸收剂送入解吸塔中进行解吸，解吸塔的塔板数为15-20块，回流比为1.1，氯气从塔顶排出进入存储罐中，残留液体从塔底排出，并进行无害化处理。本发明能够减少有效回收废气中的氯气，降低企业生产成本，减少生产中的污染。