Title: Fine preparation method for gas
Application Number: 98109828 Application Date: 1998.06.10
Publication Number: 1206735 Publication Date: 1999.02.03
Approval Pub. Date: 2002.09.04 Granted Pub. Date: 2002.09.04
International Classifi-cation: C10K1/12
Applicant(s) Name: Mitsubishi Jukogyo K. K. Address:
Inventor(s) Name: Tagaya Atsushi;Echi Eiji;Susuki Makoto
Attorney & Agent: gui yongliang
Abstract:
    The invention comprises a scrubbing process which contacts produced gas A1 with ablution B to remove the ammonia-containing impurities, a pH adjusting process which extracts a part of the ablution C and adjusts the pH value to neutral nearby, and an evaporation process which evaporates a part of ablution C1 in evaporating pot 53 and condensates exhaust gas C3 of the evaporating pot 53 to recover the ammonia in gas in aqueous ammonia C6 form and discharge impurity residues in the evaporating pot 53 in solid form C5.
Time: 8