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Catalytic cracking diesel oil utilization method, and high-octane gasoline or high-octane gasoline blend component

A technology for catalytically cracking diesel oil and high-octane gasoline, which is applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., can solve the problems of hydrorefining and aromatic hydrocarbon extraction process description, etc., and achieves low cost and improved gasoline. Yield, low cost effect

Inactive Publication Date: 2018-04-13
SINOPEC ENG GRP CO LTD
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Problems solved by technology

However, in the method embodiment, the LCO of the auxiliary fractionation tower of the catalytic cracking unit contains a large amount of bicyclic and tricyclic aromatic hydrocarbons, which are not utilized, and are directly discharged from the device; at the same time, the method does not describe the hydrofinishing and aromatics extraction process in detail.

Method used

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  • Catalytic cracking diesel oil utilization method, and high-octane gasoline or high-octane gasoline blend component
  • Catalytic cracking diesel oil utilization method, and high-octane gasoline or high-octane gasoline blend component
  • Catalytic cracking diesel oil utilization method, and high-octane gasoline or high-octane gasoline blend component

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Embodiment 1

[0096] Such as figure 1 As shown, the combined technological process for processing inferior diesel oil in this embodiment is as follows:

[0097] The light cycle oil LCO42 from the main fractionation tower 39 and the LCO48 from the auxiliary fractionation tower 45 enter the hydrofinishing reactor 1, and contact and react with the hydrogenation catalyst; the reaction effluent 2 enters the high-pressure separator 3, and the circulating hydrogen 4 returns to the hydrofinishing Reactor 1, liquid phase product 5 is separated into the first gasoline 7, refined diesel oil 18 and refined diesel oil 2 9 through the first stripper 6; refined diesel oil 1 8 can be used as diesel oil blending component; refined diesel oil 2 9 enters the fractionation tower 10. At the optimal cut point, the light fraction 11 is obtained at the top of the tower, and the heavy fraction 12 is obtained at the bottom of the tower; the light fraction 11 enters the second riser reactor 31 of the catalytic cracki...

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Abstract

The invention relates to the field of petroleum processing, and concretely relates to a catalytic cracking diesel oil utilization method, and a high-octane gasoline or a high-octane gasoline blend component. The catalytic cracking diesel oil utilization method comprises the following steps: (a) analyzing the composition and the properties of the catalytic cracking diesel oil to determine the cut point; (b) fractionating and cutting the catalytic cracking diesel oil, and performing separation to obtain a light fraction and a heavy fraction; (c) carrying out dual-solvent liquid-liquid extractionon the heavy fraction to obtain aromatic hydrocarbon-rich extract oil and saturated hydrocarbon-rich raffinate oil; and (d) carrying out catalytic cracking on the saturated hydrocarbon-rich raffinateoil and the light fraction to produce the high-octane gasoline or the high-octane gasoline blend component. The method has the advantages of scientific and reasonable process, high gasoline yield, low yield of oil slurry, coke and dry gas, simple process and low cost.

Description

technical field [0001] The invention relates to the field of petroleum processing, in particular to a method for utilizing catalytic cracking diesel oil and high-octane gasoline or high-octane gasoline blending components. Background technique [0002] At present, the cetane number of LCO (light cycle oil) in FCC (catalytic cracking) units of domestic refineries is generally low, while the requirements for cetane number of vehicle diesel oil are continuously increasing. On January 1, 2017, the National V vehicle The 0# diesel standard requires that the cetane number is not less than 51, so it is difficult for some catalytic cracking diesel oil to meet the needs of the refinery to reconcile and produce vehicle diesel oil even after hydrorefining or upgrading, and hydrogenation upgrading requires consumption With a large amount of hydrogen and extremely low reaction space velocity, the cost of device construction and operation is very high, and it is no longer an economically ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/04
Inventor 经铁孟凡东闫鸿飞刘丹禾秦如意张亚西武力宪孙世源李秋芝张瑞风杨玉敏王雪
Owner SINOPEC ENG GRP CO LTD
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