Corrosion Reduction of Sulfolane Extraction System and Its Industrial Application

The corrosion status in sulfolane extraction unit of aromatic complex in SINOPEC Tianjin division was investigated and analyized. Weak alkaline resin has been used to remove the accumulated chloride ions and sulphate ions in this system. Reduced equipment corrosion resulted from both chloride ions and acid radical has been achieved and now the equipment can be opreated steadily and safely.