The production process of oil refining equipment for the delayed coking series. The heavy residual oil by thermal cracking and condensation reactions, the depth of decarburization light distillate oil, the most important deep processing means. With relatively low investment technology is mature, high adaptability and economic benefits of higher raw material advantages. Especially coking unit can greatly improve the refinery's diesel-gasoline ratio to meet the market demand for diesel, thereby enhancing the refinery economic benefits and market competitiveness