Gas oil and residual oil hydrotreating process for producing catalytically cracked material

Abstract

The process of hydrogenating gas oil and residual oil to produce catalytically cracked material includes the following steps: contacting and reacting the mixture of gas oil and hydrogen with optional hydrogenation protecting agent and hydrogenation refining catalyst in the first reaction area; directly mixing the produced oil with residual oil, contacting and reacting the mixture with hydrogenation protecting agent, hydrogenating and demetallizing catalyst and hydrotreating catalyst successively in the second reaction area; cooling and separating the reacted products to obtain hydrogen-rich liquid and gas products. The present invention makes it possible to produce high quality catalytically cracked material via adding residual oil in 5-50 wt% into gas oil.

Description

technical field [0001] The invention belongs to a method for refining hydrocarbon oil in the presence of hydrogen, more specifically, a method for hydrotreating gas oil and residual oil to produce catalytic cracking raw materials. Background technique [0002] With the increasingly stringent environmental protection regulations around the world, countries and regions around the world have higher and higher quality requirements for refined oil products, especially light oil products such as gasoline and diesel. Sulfur limits are more stringent. The main problem of my country's gasoline quality is the high content of sulfur and olefins. The main reason is that the proportion of catalytic cracked gasoline in the gasoline pool is too high, accounting for more than 80% by weight; while catalytic diesel oil accounts for nearly three thirds of the total amount of diesel blending. one-third. Facing the grim situation that crude oil is becoming heavier and the processing volume of i...

AI Technical Summary

Problems solved by technology

However, this method requires a residual oil hydrogenation unit, so the investment cost and operating cost are high