METHOD FOR REMOVING CHLORINE FROM HIGH CHLORINE CONTENT WASTE OIL USING SOLID ACID SUBSTANCES

The present embodiment pertains to a technique for removing at least 90% of the chlorine in high Cl content oil by performing a high-temperature treatment using solid acid substances. The oil removed Cl from a waste oil can be incorporated in a refinery process and thereby converted into fuel or a chemical product.According to the present embodiment, chlorine can be removed through a high-temperature heat treatment after mixing high Cl content oil with a solid acid material. In the process of removing Cl, major impurities, such as S, N, and O, as well as Na, Ca, and Fe, which can act as catalyst poisons in the catalytic reactions of a refinery process, are also removed at the same time.In the process of removing Cl from the high Cl content oil through the solid acid substances, abnormal reactions, deterioration of product properties, and yield loss can be prevented by slightly increasing the average molecular weight of the oil composition through oligomerization and alkylation reactions.This method is environmentally appropriate in that waste solid acid substances (waste zeolite, waste clay, etc.), which are discharged after use in petrochemical processes, can be used as solid acid substances for Cl removal after undergoing a simple treatment.