Stepped regeneration process of sulfuric acid after water desalting treatment

Application Number  00129467 Application Date  2000.12.29
Publication Number  1361069 Publication Date  2002.07.31
Priority Information    
Applicant(s) Name  Qilu Petrochemical Co., China Petrochemical Group  
Inventor(s) Name  Xi Wenhong;Li Shengtai;Peng Sen  
Patent Agency Code  37103 Patent Agent  geng xia
AbstractThe present invention features that in the cationic bed divided into two chambers including the upper one with strong acid cationic resin and lower one with weak acid cationic resin, sulfuric acid is used as regenerating agent and that in the stepped regeneration process, the concentration of the regenerated liquid of the first step to the upper chamber is 0.7-1.5%,, that of the last step 2-5 % and that to the lower chamber always 0.4-0.7%. The process of the present invention is simple, safe and reliable, and substituting hydrochloric acid with sulfuric acid can lower the production cost and makes it easy to protect pipeline and equipment.