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A shale oil staged reverse sequence hydrogenation process system

The technology of a process system and a hydrogenation system is applied in the field of a shale oil graded reverse-sequence hydrogenation process system, which can solve the problems of poor economy and high olefin content, achieve low equipment investment and operating energy consumption, short process flow, and slow down coking. side effects

Active Publication Date: 2022-06-17
胜帮科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problems existing in the prior art, the present invention provides a shale oil graded reverse sequence hydrogenation process system. The equipment solves the problems of poor economy and olefinic hydrocarbons caused by the traditional shale oil hydrogenation deep denitrification process. The problem of the impact of high content on the long-term operation of the device

Method used

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  • A shale oil staged reverse sequence hydrogenation process system
  • A shale oil staged reverse sequence hydrogenation process system
  • A shale oil staged reverse sequence hydrogenation process system

Examples

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Embodiment 1

[0068] This embodiment provides a shale oil graded reverse-sequence hydrogenation process system, the structure of which is as follows figure 1 As shown, the process system comprises a one-stage hydrogenation system and a two-stage hydrogenation system connected in sequence;

[0069] The one-stage hydrogenation system includes an olefin saturation reactor, a desulfurization and denitrification reactor, a deep denitrification and dearomatization reactor, a gas-phase hydrogenation reactor, a first-stage hydrogenation separator and a first-stage hydrogenation product fractionation tower connected in sequence;

[0070] The two-stage hydrogenation system includes a hydroisomerization reactor, a two-stage hydrogenation separator, and a two-stage hydrogenation product fractionation column connected in sequence;

[0071] The hydrogenation tail oil outlet at the bottom of the first-stage hydrogenation product fractionation tower is connected with the reactant inlet of the hydroisomeriz...

Embodiment 2

[0082] This embodiment provides a shale oil graded and reversed hydrogenation process system using the shale oil graded and reversed hydrogenation process system provided in Embodiment 1, and the method includes:

[0083] The shale oil is mixed with circulating hydrogen and the returned liquid-phase olefin saturation reaction product, and then enters the olefin saturation reactor for hydrogenation reaction mainly based on the hydrogenation and saturation reaction of diolefins. The reaction product is subjected to gas-liquid separation at the bottom of the reactor, and One part is recycled to the olefin saturation reactor, and the other part is mixed with the gas-phase product and then enters the desulfurization and denitrogenation reactor to continue the olefin saturation reaction, and at the same time, the hydrorefining reaction mainly focuses on desulfurization, denitrogenation, deoxygenation and aromatics saturation. During the reaction process, a large amount of ammonia and...

Embodiment 3

[0085] The shale oil was treated using the shale oil graded reverse hydrogenation equipment provided in Example 1 and the shale oil graded reverse hydrogenation method provided in Example 2, and the specific conditions are shown in Table 1.

[0086] Table 1

[0087]

[0088]

[0089] The mass ratio of the liquid phase to the shale oil that the olefin saturation reactor returns to the shale oil feed pipeline is 1:1;

[0090] The mass ratio of the hydrogenation tail oil and part of diesel oil separated by the first-stage hydrogenation product fractionation tower into the hydroisomerization reactor is 7.5:1.

[0091] The products of the one-stage hydrogenation product fractionator include naphtha and diesel.

[0092] The products of the two-stage hydrogenation product fractionator include naphtha, white oil, light lube base oil, medium lube base oil, and heavy lube base oil.

[0093] The quality index of naphtha products can reach S<0.5ppm, N<0.5ppm.

[0094] White oil p...

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Abstract

The invention provides a shale oil graded reverse sequence hydrogenation process system, the process system includes a hydrogenation system and a hydrogenation system connected in sequence; the hydrogenation system includes a first reaction device, a second reaction device, a third reaction unit, a gas-phase hydrogenation unit, a first-stage hydrogenation separation unit and a first-stage hydrogenation product separation unit; the second-stage hydrogenation system includes a sequentially connected hydroisomerization reaction unit, a second-stage hydrogenation separation unit, and Second-stage hydrogenation product separation device; the hydrogen required for two-stage hydrogenation is added to the second-stage hydrogenation system and the first-stage hydrogenation system in sequence after being boosted by a new hydrogen compressor. The equipment solves the problems of poor economy caused by the traditional shale oil hydrogenation deep denitrification process and the impact of high olefin content on the long-term operation of the device.

Description

technical field [0001] The invention belongs to the field of shale oil processing and relates to a shale oil hydrogenation process system, in particular to a shale oil graded reverse sequence hydrogenation process system. Background technique [0002] Shale oil is the product of thermal decomposition of the organic matter of oil shale after thermal processing. It is similar to natural oil and contains more unsaturated hydrocarbons than natural oil, as well as non-hydrocarbon organic compounds such as nitrogen, sulfur and oxygen. Unsaturated hydrocarbons and non-hydrocarbon compounds in shale oil are the main reasons for the increase of oil colloids and the formation of sediments, resulting in poor stability and black color. Therefore, whether shale oil is further processed to produce fuel oil or other products, it is necessary to remove non-hydrocarbon compounds and saturated olefins to ensure product quality. Hydrogenation process is a technical means to improve the qualit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G65/08C10G65/06
CPCC10G65/08C10G65/06C10G65/043C10G2300/202C10G2400/10C10G2400/14C10G2400/04C10G2400/18
Inventor 黄云王庆元常伟先任鹏于清江
Owner 胜帮科技股份有限公司
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