The quality of diesel oil producing was advanced by isomery pour point depression technique applying in hydrogenation unit in Harbin Petroleum Company Branch of PetroChina.
Aiming at the shortage of visbreaker feedstock and fuel oil as well as the surplus of asphalt in Shanghai Oil Refinery, asphalt blended feedstock was tested.
This article analyzes main factors that affect the actual operation of Demethanizer,and discusses the problems existing in the Demethanizer after the revamp of ethylene plant in Fushun,CCPC.