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Diesel raw material treatment method

A treatment method and diesel oil technology, which is applied in the direction of hydrocarbon oil treatment products, hydrocarbon oil treatment, hydrogenation process, etc., can solve the problem of poor selectivity of single-ring aromatic hydrocarbons, etc., to improve activity and stability, improve service life, and high active effect

Active Publication Date: 2018-11-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The technical problem to be solved by the present invention is the poor selectivity of single-ring aromatics in the conventional hydrorefining process of high-aromatic diesel feedstock

Method used

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Embodiment 1

[0086] According to the method provided by the present invention, the catalytic diesel oil in Table 1 is used to cut it into light diesel oil fraction A1 and heavy diesel oil fraction B1. Based on the total aromatics content in light diesel oil fraction A1, the cut light diesel oil fraction A1 contains only The content of ring aromatics accounted for 83.3% of the total aromatics content, and alkylbenzene accounted for 65% of the single-ring aromatics content; based on the total aromatics content in the heavy diesel oil fraction B1, the bicyclic aromatics accounted for 87.4% of the total aromatics content in the heavy diesel oil fraction B1. Light oil fraction A1 contacts with catalyst A for reaction in the first reaction zone, and heavy diesel oil fraction B1 contacts with catalyst B for reaction in the second reaction zone. Its hydrogenation reaction conditions are shown in Table 3. The hydrogenated heavy diesel oil fraction enters the catalytic cracking riser reactor, and th...

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Abstract

A diesel raw material treatment method includes: cutting raw diesel into light diesel fraction and heavy diesel fraction; allowing the light diesel fraction to react in a first traction area to obtaina component rich in cycloalkane; allowing the heavy diesel fraction to react in a second reaction area; enabling obtained hydrogenation diesel fraction to enter a catalytic cracking unit for catalytic cracking reaction at the presence of a catalytic cracking catalyst; separating reaction oil gas to obtain a gasoline product rich in aromatic hydrocarbon class compounds. By the method, the raw diesel with high aromatic hydrocarbon content can be treated to produce BTX, high-octane gasoline and jet fuel components, so that the objective of converting low-quality diesel into high-added-value products is achieved.

Description

technical field [0001] The invention relates to a method for combined treatment of hydrocarbon oil by hydrofining and catalytic cracking, more specifically, a treatment method for diesel raw materials. Background technique [0002] With the rapid growth of market demand for clean oil products, the catalytic cracking process in my country has developed rapidly as the main process for producing light oil products. At the same time, the output of catalytic diesel oil produced by catalytic cracking process has increased year by year, and catalytic diesel oil accounts for about half of the share of commercial diesel oil in my country. one third. However, due to heavy crude oil, the quality of catalytic diesel oil deteriorates, mainly manifested in high content of aromatics, sulfur, nitrogen, and olefins, low cetane number and poor stability, wherein the total aromatics content ranges from 50% by mass to 90% by mass The content of bicyclic and above bicyclic aromatics is more than...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/00
CPCC10G69/00C10G2300/1048C10G2300/1055C10G2300/1059C10G2300/70C10G2400/02
Inventor 丁石张锐张乐习远兵牛传峰
Owner CHINA PETROLEUM & CHEM CORP
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