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Liquid phase hydrogenation reactor for enhancing mass transfer and reaction process

A liquid-phase hydrogenation and reactor technology, applied in chemical instruments and methods, chemical/physical processes, refining to remove heteroatoms, etc., can solve the problems of complex reaction process, increased floor space, and large equipment volume, etc. Achieving the effect of long residence time, improved utilization rate, and improved quality

Pending Publication Date: 2022-03-01
CHINA PETROLEUM & CHEM CORP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it combines the reaction system, circulation system and heating furnace system, the reaction process is very complicated, the equipment cost is high and it is not easy to operate
The equipment is bulky and increases the floor space
Moreover, multiple times of dissolving hydrogen increases the time of the mass transfer reaction, and the economic benefit is low

Method used

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  • Liquid phase hydrogenation reactor for enhancing mass transfer and reaction process
  • Liquid phase hydrogenation reactor for enhancing mass transfer and reaction process
  • Liquid phase hydrogenation reactor for enhancing mass transfer and reaction process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Such as figure 1 Shown is a schematic diagram of a liquid-phase hydrogenation reactor for mass transfer-enhanced liquid-phase hydrogenation of diesel oil according to the present invention. As shown in the figure, the liquid-phase hydrogenation reactor includes a reactor cylinder 1, the bottom of the reactor cylinder 1 is provided with a liquid outlet 6, and the side near the bottom of the cylinder 1 is provided with a liquid inlet 5 and a gas outlet. Inlet 7, one end of the gas inlet 7 located inside the cylinder body 1 is connected with a gas pre-distribution plate 4, and a layered partition 2 is arranged above the gas pre-distribution plate 4, and the layered partition 2 is a circular Disk-shaped, and connected and fixed with the inner wall of the cylinder 1 by means of its outer edge, the bottom of the layered partition 2 is pierced and fixed with several strongly dispersed air bubble generators 3 . Preferably, the distance between the strong dispersion bubble gene...

Embodiment 2

[0087] Such as Figure 10 Shown is a liquid-phase hydrogenation reaction device using the mass transfer-enhanced liquid-phase hydrogenation reactor of Example 1, that is, the reactor of Example 1 is used for liquid-phase hydrogenation reaction. As shown in the figure, the liquid-phase hydrogenation reaction device includes: a heating furnace F101, a hydrofining reactor R101, a hot high-pressure stripping separator C101, a hot low-pressure separator C103, an air condenser, and a cold low-pressure separator C102 , wherein, the hydrofining reactor R101 adopts the mass transfer-enhanced liquid-phase hydrogenation reactor described in Example 1.

[0088] The corresponding reaction process comprises the following steps:

[0089] Step 1: The raw material liquid-phase diesel oil and hydrogen enter the heating furnace through the raw material pump P101 and the hydrogen compressor K101 to be heated respectively, and then enter the hydrofinishing reactor R101. In the hydrofinishing reac...

Embodiment 3

[0100] A petrochemical plant adopts the mass transfer-enhanced liquid-phase hydrogenation reactor of Example 1, and compares the liquid-phase hydrogenation reaction method of Example 2 with the original device. The properties of the raw material liquid-phase diesel oil in this example are shown in Table 1. This implementation Example and the reaction conditions of the original device are shown in Table 2, and the product properties of the present embodiment and the original device are shown in Table 3.

[0101] Table 1. Properties of liquid-phase diesel oil

[0102] source Straight-run diesel + coker diesel Proportion 80 / 20 Distillation range / ℃ 180～365 Density(20℃) / (g·cm -3 )

[0103] Table 2, present embodiment and former device reaction condition

[0104]

[0105]

[0106] Table 3, embodiment and original device product properties

[0107] project This example original device Density(20℃) / (g·cm -3 )

[0108] From the...

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Abstract

The invention discloses a mass transfer enhanced liquid phase hydrogenation reactor which comprises a reactor cylinder, a liquid outlet is formed in the bottom of the reactor cylinder, a liquid inlet and a gas inlet are formed in the side face close to the bottom of the cylinder, and a gas pre-distribution disc is connected to one end, located in the cylinder, of the gas inlet. A layering partition plate is arranged above the gas pre-distribution disc, and a plurality of strong dispersion bubble generators are fixed to the bottom of the layering partition plate in a penetrating mode. The invention also discloses a reaction process using the liquid phase hydrogenation reactor for enhancing mass transfer. According to the liquid-phase hydrogenation reactor and the reaction process, full mixing of micro-bubbles, a catalyst and liquid can be enhanced, the gas content of hydrogen in the liquid-phase hydrogenation reactor is increased, the retention time of the micro-bubbles is long, and the gas-liquid contact area can be increased.

Description

technical field [0001] The invention belongs to the technical field of chemical equipment, and in particular relates to a mass transfer-enhanced liquid-phase hydrogenation reactor and a reaction process. Background technique [0002] Petroleum is currently the most widely used energy source in the world. Its liquid-phase hydrogenation technology refers to the reaction process of petroleum fractions and hydrogen under the action of catalysts. Liquid-phase hydrogenation is an important means for refining and upgrading petroleum products and heavy oil processing. The purpose of oil upgrading is to remove nitrogen, oxygen, sulfur and other heteroatoms and metal impurities in oil, or to hydrogenate some aromatics and olefins to improve the performance of oil. [0003] Continuous liquid phase hydrogenation technology is one of the main hydrogenation technologies used in the process of diesel quality upgrading in my country. Compared with the conventional trickle bed hydrogenation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/02C10G45/02
CPCB01J8/02B01J8/0278C10G45/02
Inventor 郝振岐杨强李明东刘栋龚淳铠刘凯祥许萧徐松宋智博
Owner CHINA PETROLEUM & CHEM CORP
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