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Lower feeding hydrogenation reactor and liquid phase hydrogenation method

A hydrogenation reactor and hydrogenation reaction technology, which is applied in the field of oil refining and chemical industry, can solve the problems of large floor area, high production cost, and high energy consumption, and achieve the effects of low equipment investment, reduction of liquid entrainment in the gas phase, and low energy consumption

Pending Publication Date: 2022-03-01
SINOPEC ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the problems existing in the above-mentioned existing hydrogenation process, the inventors of the present invention have unexpectedly discovered a hydrogenation reactor and a liquid-phase hydrogenation method with practical value through repeated research, experimentation, engineering design and construction, and solved the current problem. With the disadvantages of high energy consumption, high production cost, and large floor space in hydrogenation technology

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  • Lower feeding hydrogenation reactor and liquid phase hydrogenation method
  • Lower feeding hydrogenation reactor and liquid phase hydrogenation method
  • Lower feeding hydrogenation reactor and liquid phase hydrogenation method

Examples

Experimental program
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Embodiment 1

[0068] Such as figure 1 , Figure 11 As shown, a lower feed hydrogenation reactor, the lower feed hydrogenation reactor includes a shell 101, the bottom of the shell 101 is provided with a feed pipeline 1, the top is provided with a gas phase outlet pipeline 2, and the upper part is provided with a liquid Phase outlet pipeline 3;

[0069] The housing 101 is provided with a hydrogenation reaction zone and a gas-liquid phase separation zone. The hydrogenation reaction zone includes an axial reaction zone and a radial reaction zone. The axial reaction zone consists of an axial catalyst bed 202 The radial reaction zone is composed of a radial catalyst bed 206, the axial catalyst bed 202 is arranged below the radial catalyst bed 206, and the axial catalyst bed 202 is provided with a gas distributor 201 , the gas distributor 201 is connected with a hydrogen gas inlet pipeline 4, the gas-liquid phase separation zone is located above the hydrogenation reaction zone, and a gas-liquid...

Embodiment 2

[0083] The difference with embodiment 1 is: the mol ratio of hydrogen and naphtha is 0.038: 1, and the liquid hourly space velocity of naphtha is 4.2h -1 , the reaction temperature of naphtha hydrogenation reaction is 205°C, and the reaction pressure is 2.05MPaG.

[0084] After testing, the content of sulfur and nitrogen in the hydrogenation product is less than 0.3ppm, the content of arsenic is less than 0.8ppb, the content of lead is less than 6.5ppb, and the bed pressure drop is 15kPa.

Embodiment 3

[0086] The difference with embodiment 1 is: the mol ratio of hydrogen and naphtha is 0.03: 1, and the liquid hourly space velocity of naphtha is 5h -1 , the reaction temperature of naphtha hydrogenation reaction is 198°C, and the reaction pressure is 2.1MPaG.

[0087] After testing, the content of sulfur and nitrogen in the hydrogenation product is less than 0.35ppm, the content of arsenic is less than 0.9ppb, the content of lead is less than 8ppb, and the bed pressure drop is 17kPa.

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Abstract

The invention relates to the technical field of oil refining and chemical engineering, and discloses a bottom feeding hydrogenation reactor and a liquid phase hydrogenation method.The reactor comprises a shell, a hydrogenation reaction zone and a gas-liquid phase separation zone are arranged in the shell, the hydrogenation reaction zone comprises an axial reaction zone and / or a radial reaction zone, the axial reaction zone is composed of a plurality of axial catalyst bed layers, and the radial reaction zone is composed of a plurality of radial catalyst bed layers; the radial reaction zone is composed of a plurality of radial catalyst bed layers, gas distributors are arranged below the hydrogenation reaction zone and between the optional axial reaction zone and radial reaction zone, the gas-liquid phase separation zone is located above the hydrogenation reaction zone, and a gas-liquid separation assembly is arranged in the gas-liquid phase separation zone; the gas-liquid separation assembly comprises an annular liquid accumulation plate, a reaction product channel and a flow guide part which are coaxially arranged, a gas-liquid separation space is defined by the gas-liquid separation assembly and the shell located above the annular liquid accumulation plate, and a gas-liquid separation channel is formed in the reaction product channel. The device and the method are high in raw material adaptability, low in energy consumption, low in bed pressure and low in equipment investment and operation cost.

Description

technical field [0001] The invention relates to the technical field of oil refining and chemical engineering, in particular to a lower-feed hydrogenation reactor and a liquid-phase hydrogenation method. Background technique [0002] Hydrogenation process is widely used in petroleum refining, coal chemical industry, fine chemical industry and other fields. In the petroleum refining industry, hydrocracking and hydrofining technologies are commonly used, and fixed-bed hydrogenation reactors are usually used to reduce the molecular size of raw oil or remove oxygen, nitrogen, sulfur, and metals in raw oil. impurity, and achieve olefin saturation and partial aromatic saturation to improve oil quality; in coal chemical industry, coal is mainly hydrogenated directly or indirectly to produce liquid fuel or chemical products; in fine chemical industry, various organic products are prepared, such as naphthalene Hydrogenation of tetrahydronaphthalene or decahydronaphthalene, benzene hy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/04B01J8/02C10G49/00
CPCB01J8/04B01J8/0292B01J8/0492C10G49/002B01J2208/00849B01J2208/00938
Inventor 张方方刘凯祥张旭
Owner SINOPEC ENG
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