Gas-liquid reaction method and gas-liquid reaction device for entering reaction preparation state in advance

A gas-liquid reaction, ready state technology, applied in feeding devices, chemical instruments and methods, chemical/physical/physical-chemical stationary reactors, etc., can solve the problem of low gas content in the reactor, reaction conversion rate and selectivity Low cost and high production cost

Active Publication Date: 2020-07-03
EAST CHINA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The first object of the present invention is to provide a gas-liquid reaction method that enters the reaction preparation state in advance, so as to solve the pr

Method used

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  • Gas-liquid reaction method and gas-liquid reaction device for entering reaction preparation state in advance
  • Gas-liquid reaction method and gas-liquid reaction device for entering reaction preparation state in advance
  • Gas-liquid reaction method and gas-liquid reaction device for entering reaction preparation state in advance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Embodiment 1, a kind of gas-liquid reaction device

[0072] Such as Figure 1 to Figure 4As shown, the present embodiment provides a gas-liquid reaction device, including a hydraulic premixer 10, and a reactor 20 connected to the hydraulic premixer 10; the gas phase feed branch V is part of the gas phase feed V1 and Main process gas phase feed V2; per unit time, the amount of the part of the gas phase feed V1 is 1.01 to 2 times the gas phase amount required to make the liquid phase feed L reach the gas phase saturation concentration. in:

[0073] The hydraulic premixer 10 includes a cylinder 11, a liquid phase feed port 12 and a gas phase feed port 13 arranged at one end of the cylinder 11, and a premixed material arranged at the other end of the cylinder 11. The discharge port 14; the liquid phase feed L is connected with the liquid phase feed port 12, and the part of the gas phase feed V1 is connected with the gas phase feed port 13; The direction from the liquid p...

Embodiment 2

[0112] Embodiment 2, a kind of gas-liquid reaction device

[0113] Such as Figure 5 As shown, the basic structure of this embodiment is the same as that of Embodiment 1, the difference is:

[0114] The lower part of the reactor 20 is provided with a gas distributor 25 and a liquid velocity distribution unit 26 sequentially from bottom to top, and the gas phase feed V2 of the main process enters the reactor 20 from the gas phase feed port 21 of the main process, and passes through The gas distributor distributes 25 ; the premixed material enters the reactor 20 from the premixed material inlet 22 and is distributed through the liquid velocity distribution unit 26 .

[0115] The liquid velocity distribution unit 26 includes a unit body 262, the unit body 262 is provided with a unit inlet and several liquid velocity distribution outlets, the unit inlet is connected to the premixed material feed port 22, and the liquid velocity The distribution outlet is provided with a discharg...

Embodiment 3

[0126] Embodiment 3, effect detection

[0127] The devices of Example 1 and Example 2 and the traditional bubble reactor device were used for comparative tests respectively. The reaction process of conventional bubble reactor is as follows: Figure 6 shown.

[0128] (1), carry out self-catalyzed oxidation reaction---cumene is oxidized into cumene hydroperoxide. The process and parameters are as follows:

[0129] Oxidation of cumene to cumene hydroperoxide Reaction conditions: reaction temperature 110°C, reaction pressure 0.6MPa, gas-liquid ratio 9:1.

[0130] A plexiglass cylinder with an inner diameter of 180mm and a height of 2000mm was used as a reactor for the test. The inside of the main reaction control unit 23 is an empty cylinder, without packing or catalyst layer.

[0131] The inner diameter D of the cylinder of the hydraulic premixer 10 is 50 mm, the total length is 2000 mm, and there are 10 high-speed flow channels, and the inner diameter of each high-speed flo...

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Abstract

The invention discloses a gas-liquid reaction method for entering a reaction preparation state in advance. A gas-phase feeding branch is partial gas-phase feed and main process gas-phase feed; the liquid-phase feed and the partial gas-phase feed are premixed through four steps before entering a reactor to obtain a premixed material; the lower part of the reactor is provided with a main process gas-phase feed port and a premixed material feed port, and the reactor above the premixed material feed port is a reaction main control unit; the premixed material enters the reactor through the premixedmaterial feeding port, the main process gas-phase feed enters the reactor through the main process gas-phase feeding port, and the premixed material and the main process gas-phase feeding port upwards enter the reaction main control unit to react. The invention further provides a gas-liquid reaction device. According to the gas-liquid reaction method and device, the premixed material can enter the reaction preparation state in advance before entering the reactor, and the conversion rate and selectivity can be improved to be close to the reaction equilibrium conversion rate and selectivity.

Description

technical field [0001] The invention belongs to the technical field of gas-liquid reaction. In particular, it relates to a gas-liquid reaction method and a gas-liquid reaction device that enter a reaction preparation state in advance. Background technique [0002] In the medium-speed and slow gas-liquid reaction process such as oxidation and hydrogenation, the gas first contacts with the liquid, and the gas molecules are transferred to the liquid film at the gas-liquid interface, and further diffuse into the liquid phase to complete the dissolution process. The gas molecules dissolved in the liquid react with the liquid molecules at the catalytic active sites to complete the reaction transformation process; when there are no catalytic active sites, the dissolved gas can react with the liquid at the same time. Therefore, in the gas-liquid reaction, the speed and depth of the gas dissolved in the liquid are important links that affect the reaction speed and depth of the react...

Claims

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Application Information

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IPC IPC(8): B01J4/00B01J19/00B01J19/24
CPCB01J4/001B01J4/002B01J4/008B01J19/0006B01J19/24B01J2204/002
Inventor 许萧杨强王磊王俊杰卢浩代品一钱运东黄燎云
Owner EAST CHINA UNIV OF SCI & TECH
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