Separation system and separation method for slurry reactor hydrocracking reaction product

Abstract

The invention belongs to the field of chemical engineering, and particularly discloses a separation system and a separation method for a slurry reactor hydrocracking reaction product. The separation system comprises a hydrogen-containing gas feeding pipeline, a slurry reactor hydrocracking reaction product feeding pipeline, an aromatic hydrocarbon-rich medium feeding pipeline, a high-pressure separation zone and a medium / low-pressure separation zone. According to the method, the characteristics of slurry bed reaction are fully considered, the reaction product is effectively separated by utilizing each stage of equilibrium phase state, and meanwhile, a hydrogen-containing gas and an aromatic hydrocarbon-rich medium are added in different separation stages, so that the phenomenon of hydrogen depletion caused by the fact that the reaction of a hydrocracking reaction product of the slurry reactor is not terminated under the high-temperature condition and the phenomenon of asphaltene precipitation caused by the fact that the stability of asphaltene is damaged under the medium-low-temperature condition are avoided, and the problem that a separation system is blocked when the slurry reactor technology is popularized in a large range can be solved.

Description

technical field [0001] The invention belongs to the field of chemical industry, and more specifically relates to a separation system and method for a slurry bed hydrocracking reaction product. 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 impurities, even if the most advanced catalyst and process technology are used, ...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a separation system and separation method for slurry bed hydrocracking reaction products, which are used to solve the phenomenon of hydrogen-poor coking and asphaltene precipitation occurring in the separation process of reaction products

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