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Wax oil liquid phase hydrotreating method

A technology of hydrogenation treatment and liquid phase hydrogenation, which is applied in the field of oil refining and can solve the problems of high hydrogen consumption and hydrogen content requirements

Active Publication Date: 2022-07-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To sum up, in the prior art, the conventional catalytic cracking process only limits the sulfur content and does not require the hydrogen content. If the hydrogenation process is deeply hydrogenated, hydrogen consumption will be caused by excessive hydrogenation. is too big

Method used

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  • Wax oil liquid phase hydrotreating method
  • Wax oil liquid phase hydrotreating method
  • Wax oil liquid phase hydrotreating method

Examples

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Embodiment Construction

[0035] Below in conjunction with the examples, the process flow and the obtained effects of the wax oil liquid-phase hydrotreating method of the present invention are further described, but the following examples do not constitute a limitation to the method of the present invention.

[0036] The specific embodiment of the liquid-phase hydrotreating method of wax oil of the present invention is as follows: the raw material oil 1 is mixed with the light cycle oil 3, the mixed material enters the hydrogen dissolving tank 4, and the hydrogen 5 is mixed with the mixed material in the hydrogen dissolving tank 4. Then it enters the reactor 6 and passes through the first catalyst bed. The effluent of the first catalyst bed is dissolved in hydrogen and passes through the second catalyst bed. The effluent of the second catalyst bed is dissolved into the hydrogen raw material and passed through the Three catalyst beds, the reaction effluent 7 of the third catalyst bed enters the low press...

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Abstract

The invention discloses a wax oil liquid-phase hydrotreating method. The method comprises the following steps: mixing a wax oil raw material, light distillate oil and hydrogen in hydrogen dissolving equipment to dissolve the hydrogen in a liquid-phase raw material; the liquid-phase raw material in which the hydrogen is dissolved is in contact with a hydrotreating catalyst for a hydrotreating reaction; and separating the material after the hydrotreating reaction to obtain a gas-phase product, light distillate oil and heavy distillate oil, optionally circulating part or all of the light distillate oil back to the hydrogen dissolving equipment, and using the heavy distillate oil as a catalytic cracking raw material. According to the method, heavy fraction excessive hydrogenation is avoided when the sulfur content of catalytic cracking raw oil is met, and the chemical hydrogen consumption can be obviously reduced.

Description

technical field [0001] The invention belongs to the technical field of oil refining, and relates to a method for liquid-phase hydrotreating of wax oil, in particular to a method for producing catalytic cracking raw materials through the liquid-phase hydrogenation process of wax oil. Background technique [0002] Although green energy technology is getting more and more attention, the extraction and utilization of oil still occupy an important position, and it is still the main source of power fuel in a short time. The proven oil reserves are increasing year by year, but the trend of heavy and inferior quality is obvious, which requires the development of more advanced technologies to improve the utilization efficiency of oil resources and the level of clean production. In oil refining technology, both hydrotreating technology and catalytic cracking technology play an important role. Hydrotreating technology can reduce the content of sulfur, nitrogen and metals in oil product...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/00
CPCC10G67/00C10G2300/4006C10G2300/4012C10G2300/4018C10G2300/70C10G2300/202C10G2300/206Y02P30/20
Inventor 曾榕辉刘涛张学辉桂兴华吴锐郭兵兵彭绍忠乔凯
Owner CHINA PETROLEUM & CHEM CORP
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