Title: Process for large scale producing of high-effective slow-corrosion agent used in acid washing with hydrochloric acid and equipment thereof
Application Number: 90104787 Application Date: 1990.07.18
Publication Number: 1048416 Publication Date: 1991.01.09
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C23G1/06
Applicant(s) Name: Jingmen No. 1 Fertilizer Plant, Hubei Prov. Address: 434560
Inventor(s) Name: Cui Xiaoxiang, Shan Zhenhu
Attorney & Agent: ZHU SHENGHUA
Abstract:
     The corrosion-inhibiting agent of this invention is produced by interaction of oleic acid, benzyl chloride, polyenic polyamine, xylene, OP-15, solvent, TX-10 and amide. When the said corrosion-inhibiting agent is used in the cleaning of boiler under the conditions of 5-7% hydrochloric acid and 50-70 deg.C., oil-removing, scale-removing and rust-eliminating may be accomplished in a single process without corrosion on the metal surface. The efficiency of corrosion-inhibition may be as high as 97%. When it is used in acidification of oil field under the conditions of 13-15% hydrochloric acid, 3% hydrogen fluoride and 90 deg.C., the corrosion rate is smaller than 10 grams per square meter an hour.
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