Slurry reactor hydrocracking reaction system and method

Abstract

The invention belongs to the technical field of chemical heavy oil (residual oil) modification, and particularly discloses a slurry reactor hydrocracking reaction system and a method for preventing oil products from density layering by using the system. According to the slurry reactor hydrocracking reaction system disclosed by the invention, heavy liquid phase components and solid substances in a liquid phase in the slurry reactor hydrocracking device reactor are discharged into a discharge separator under the assistance of a purging medium. The phenomenon that heavy liquid phase components and solid substances in a liquid phase in a slurry reactor hydrocracking device reactor are subjected to gravity influence and are deposited at the bottom of the reactor in a dense layered manner with light components is effectively avoided, and coking at the bottom of the reactor is avoided; and meanwhile, green coke blockage caused by high temperature and no flow of a discharge facility in a hot standby state is also avoided.

Description

technical field [0001] The invention belongs to the technical field of chemical heavy oil (residual oil) upgrading, and more specifically relates to a slurry bed hydrocracking reaction system and a method for preventing oil product density and layering by using the system. Background technique [0002] China has always relied heavily on crude oil imports, and importing heavy crude oil or high-sulfur oil is the general trend. However, the treatment of residual oil produced by heavy oil is a difficult problem in the world. At present, about 100-200 million tons of residual oil are processed in China every year, and the yield of traditional delayed coking technology is about 60-70%; the yield of high-pressure ebullating bed hydrogenation technology is about 60-75%. Under the increasingly stringent environmental protection requirements of the country, the expected prospect of delayed coking technology is bleak; fixed bed residue hydrogenation is not only limited by raw material...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a slurry bed hydrocracking reaction system and method, the reaction system not only solves the The heavy liquid phase components and solid substances in the liquid phase are affected by gravity and light components are densely layered and deposited at the bottom of the reactor, which effectively prevents the discharge facilities from being caused by high temperature and no flow in the hot standby state. The occurrence of green coke blockage; also avoids the safety, cost and maintenance problems caused by the complicated design of discharge and receiving facilities in the high-pressure and high-temperature hot standby state

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