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Graded reverse hydrogenation process system for shale oil

A process system and shale oil technology, applied in the field of shale oil graded reverse sequence hydrogenation process system, can solve the problems of poor economy and high olefin content, and achieve the effects of low equipment investment, low energy consumption and short process flow

Active Publication Date: 2020-07-28
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

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  • Graded reverse hydrogenation process system for shale oil
  • Graded reverse hydrogenation process system for shale oil
  • Graded reverse hydrogenation process system for shale oil

Examples

Experimental program
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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 includes a first-stage hydrogenation system and a second-stage hydrogenation system connected in sequence;

[0069] The one-stage hydrogenation system includes sequentially connected olefin saturation reactors, desulfurization and denitrogenation reactors, deep denitrogenation and dearomatization reactors, gas-phase hydrogenation reactors, one-stage hydrogenation separators, and one-stage hydrogenation product fractionation towers;

[0070] The second-stage hydrogenation system includes a sequentially connected hydroisomerization reactor, a second-stage hydrogenation separator, and a second-stage hydrogenation product fractionator;

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

Embodiment 2

[0082] This embodiment provides a staged reverse sequence hydrogenation of shale oil using the shale oil staged reverse sequence hydrogenation process system provided in Example 1. 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 involving diolefin hydrogenation saturation reaction. The reaction product is separated from gas to liquid at the bottom of the reactor, and the liquid A part is recycled to the olefin saturation reactor, and a 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 carry out the hydrofining reaction mainly focusing on desulfurization, denitrogenation, deoxygenation and aromatics saturation. During the reaction process, a large amount of ammonia and water vapor are pr...

Embodiment 3

[0085] The shale oil staged reverse sequence hydrogenation equipment provided in Example 1 and the shale oil staged reverse sequence hydrogenation method provided in Example 2 were used to treat shale oil, and the specific conditions are shown in Table 1.

[0086] Table 1

[0087]

[0088]

[0089] The mass ratio of the liquid phase and 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 the diesel oil obtained from the separation of the first-stage hydrogenation product fractionation tower into the hydroisomerization reactor is 7.5:1.

[0091] The products of the first-stage hydrogenation product fractionation tower include naphtha and diesel oil.

[0092] The products of the second stage hydrogenation product fractionation tower include naphtha, white oil, light lube base oil, medium lube base oil and heavy lube base oil.

[0093] Naphtha product quality inde...

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Abstract

The invention provides a graded reverse hydrogenation process system for shale oil. The process system comprises a first-stage hydrogenation system and a second-stage hydrogenation system which are connected in sequence, wherein the first-stage hydrogenation system comprises a first reaction device, a second reaction device, a third reaction device, a gas-phase hydrogenation device, a first-stagehydrogenation separation device and a first-stage hydrogenation product separation device; the second-stage hydrogenation system comprises a hydroisomerization reaction device, a second-stage hydrogenation separation device and a second-stage hydrogenation product separation device which are connected in sequence; and hydrogen required by two-stage hydrogenation is boosted by a make-up hydrogen compressor and then is sequentially added into the second-stage hydrogenation system and the first-stage hydrogenation system. The process system of the invention solves the problems of poor economic performance and influence of high olefin content on long-period operation of a device caused by a traditional hydrogenation deep denitrification process for shale oil.

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 organic matter after thermal processing of oil shale, similar to natural petroleum, containing more unsaturated hydrocarbons than natural petroleum, and containing 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 colloid and the formation of sediment, which leads to 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. The hydrogenation process is a technical means to make th...

Claims

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Application Information

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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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