THE METHOD FOR USING DISULFIDE MIXTURE AS A SULFIDING AGENT

摘要

Disclosed are a method for preparing a pure disulfide mixture and its use as a sulfiding agent. Composed essentially of dimethyldisulfide, ethylmethyldisulfide and diethyldisulfide, the disulfide mixture is prepared by the removal of caustic and sodium compounds from a by-product produced in an LPG desulfurizing process of an oil refinery. The removal is conducted by washing the by-product with water and separating the disulfide mixture from the water contained therein. The disulfide mixture can be used as a sulfiding agent suitable in reducing a coking reaction within a cracking tube for an ethylene cracker.