Title: Method utilizing methyl-diethanolamine water solution for removal of acid gas from coke-oven gas
Application Number: 95118362 Application Date: 1995.11.23
Publication Number: 1132236 Publication Date: 1996.10.01
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C10K1/14
Applicant(s) Name: Baoshan Iron and Steel (Group) Corp. Address: 201900
Inventor(s) Name:
Attorney & Agent: REN JIE YAN XIAOSI
Abstract:
     A process for removing acidic gas from coke oven gas by means of aqueous solution of methyl diethanolamine (MDEA) features that an alkaline compound 1-3wt.%, based on total weight of the solution as activating agent is added to the aqueous solution of MDEA (23-40 wt.%) to form mixed aqueous solution as absorber and debenzolized coke oven gas at 27-35 deg.C and 9000-10000 Pa is in counter-current contacted with said absorber at 37-45 deg.C in desulfurizing tower with 1.4-2.0 L/sq.m of liquid/gas ratio. Clarified coal gas contains H2S less than 100 mg/cu.m and HCN less than 100 mg/cu.m.
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