Purification of Waste Acid from Benzol Refining by Salt-out Extraction Process

摘要

The salt-out extraction process is used to deal with the waste acid from the benzol refining. Experimental results show that optimal separation can be obtained under the condition of the proper proportion. Extracting agent, raw phenol can be circulated to use. The purified acid can be used in the manufacture of ammonium sulfate. So it is feasible for the salt- out extraction process to purify the waste acid, and the purified acid can be used to manufacture ammonium sulfate.