A kind of separation system and separation method of slurry bed hydrocracking reaction product
A technology for hydrocracking and reaction products, which is applied in chemical instruments and methods, chemical/physical processes, and hydrocarbon oil treatment, and can solve problems such as precipitation, hydrogen-depleted coking asphaltenes, etc.
Active Publication Date: 2022-07-08
SINOPEC ENG +1
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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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Embodiment 1
[0033]A slurry bed hydrocracking reaction product separation system includes: a hydrogen-containing gas feed line, a slurry bed hydrocracking reaction product feed line, an aromatic-rich medium feed line, a high-pressure separation zone and a medium / low pressure separation zone ;in,
[0034] The high-pressure separation zone includes separator A 4, separator B 5, heat exchanger I, heat exchanger II and decompression device I;
[0035] The middle / low pressure separation zone includes separator C 6, separator D 7, heat exchanger III, heat exchanger IV and decompression device II;
[0036] The slurry bed hydrocracking reaction product feed line is connected to the upper part of the separator A 4;
[0037] The top of separator A 4 is connected with heat exchanger I and separator B 5 in sequence; the top of separator B 5 is connected with the desulfurization system; the bottom of separator A 4 and the bottom of separator B 5 are connected with heat exchanger II and decompression d...
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The invention belongs to the field of chemical industry, and specifically discloses a separation system and a separation method of a slurry bed hydrocracking reaction product. The separation system comprises: a hydrogen-containing gas feed line, a slurry bed hydrocracking reaction product feed line, Aromatic-rich media feed line, high pressure separation zone and medium / low pressure separation zone. The present invention fully considers the characteristics of the slurry bed reaction, and while utilizing the equilibrium phases at all levels to effectively separate the reaction products, by adding hydrogen-containing gas and aromatic hydrocarbon-rich medium in different stages of separation, the slurry bed hydrocracking reaction products are avoided. Due to the hydrogen depletion phenomenon that the reaction does not terminate under high temperature conditions and the asphaltene precipitation phenomenon that occurs due to the destruction of asphaltene stability under medium and low temperature conditions, the blocking problem of the separation system that plagues the large-scale promotion of slurry bed technology can be overcome.
Description
technical field [0001] The invention belongs to the field of chemical industry, and more particularly relates to a separation system and a separation method of a slurry bed hydrocracking reaction product. Background technique [0002] China has been relying heavily on crude oil imports, and it is the general trend to import heavy crude oil or high-sulfur oil. The disposal of residual oil produced by heavy oil is a world problem. 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 fluidized bed hydrogenation technology is about 60-75%. Under the increasingly strict environmental protection requirements of the country, the expected prospect of delayed coking technology is bleak; the hydrogenation of fixed-bed residue oil is not only limited by raw material impurities, even if the most advanced catalyst and process technology are used, the op...
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IPC IPC(8): B01J8/00C10G45/16
CPCC10G45/16C10G2300/202
Inventor 刘凯祥宋智博徐松薛楠李明东李济辰
Owner SINOPEC ENG