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Gas liquid mixed feeding distributor and polyphenylene oxide reaction device using the same

A feed distributor and gas-liquid mixing technology, applied in the field of distributors, can solve problems affecting gas distribution effect and pressure, gas inlet blockage, etc., to increase the gas-liquid contact interface area, improve large bubbles, and reduce the amount of generation Effect

Inactive Publication Date: 2009-05-06
CHINA NAT BLUESTAR GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The quinone impurities and the precipitated polyphenylene ether will adhere to the gas inlet, which will affect the gas distribution and pressure when oxygen is introduced, and in severe cases will cause the gas inlet to be blocked

Method used

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  • Gas liquid mixed feeding distributor and polyphenylene oxide reaction device using the same
  • Gas liquid mixed feeding distributor and polyphenylene oxide reaction device using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 and figure 2 As shown, the gas-liquid mixed feed distributor C includes a base C1, which includes a circular bottom and a side wall. The bottom of the base C1 is connected with a gas inlet C5, and the side wall of the base C1 is connected with a liquid inlet C4 and a gas inlet. C5 is connected with a circular nozzle C3, the diameter of the hole on the nozzle is 5μm, which is used for gas distribution, and a circular cover C6 for covering the base C1 is set above the base C1, and a circular cover C6 is set between the bottom of the base C1 and the cover C6 The spring C2 is used to connect the base C1 and the cover C6.

[0035] Such as figure 2 As shown, the reaction device includes a reactor A, and its side wall is provided with two liquid feed ports Y1 and Y2, which are respectively located at the upper and lower parts of the side wall, and the bottom is provided with a gas feed port Q; The mixed feed distributor C, the bottom C1 of the distributor...

Embodiment 2

[0039] The gas-liquid mixed feed distributor C in this embodiment is similar to that in Embodiment 1, wherein the bottom of the base C1 and the cover plate C6 are square, and the nozzle is also square, and the diameter of the holes on the nozzle is 50 μm.

[0040] The reaction device in this embodiment is similar to that of Example 1, wherein the agitator used in the reactor is a folded-leaf agitator, the ratio of the height to the diameter of the reactor A reaction section is 1, and the diameter of the external circulation pipeline F is the same as Reactor A has a diameter ratio of 1:2.

[0041] Using the distributor and reaction device of this embodiment, no pipeline blockage occurs, and the oxygen consumption is reduced by 10%, the by-products generated in the reaction are reduced by 10%, and high-quality polyphenylene ether products can be obtained. The obtained polyphenylene ether product is measured, using chloroform as a solvent, the measurement temperature is 25°C, and...

Embodiment 3

[0043] The gas-liquid mixed feed distributor C in this embodiment is similar to that in Embodiment 1, wherein the bottom of the base C1 and the cover plate C6 are elliptical, and the nozzle is also ellipsoid, and the diameter of the hole on the nozzle is 80 μm.

[0044] The reaction device in this example is similar to Example 1, wherein the agitator used in the reactor is a turbine agitator, the ratio of the height to the diameter of the reactor A reaction section is 10, and the pipe diameter of the external circulation pipeline F is related to the reaction The diameter ratio of device A is 1:20.

[0045] By adopting the distributor and reaction device of this embodiment, there is no pipeline blockage, and the oxygen consumption is reduced by 8%, and the by-products generated in the reaction are reduced by 15%, so that high-quality polyphenylene ether products can be obtained. The obtained polyphenylene ether product is measured, using chloroform as a solvent, the measurement...

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Abstract

The invention discloses a gas and liquid mixed feeding distributor which comprises following components: a base, which comprises a bottom and a lateral wall; a gas inlet, which is arranged at the bottom of the base; a liquid inlet, which is arranged on the lateral wall of the base; a nozzle, which is connected with the gas inlet and used for gas distribution; a cover board, which is arranged above the base and used for covering the base; and a spring, which is arranged between the bottom of the base and the cover board, and is used for connecting the base and the cover board. The invention further discloses a polyphenyl ether reaction device that comprises the gas and liquid mixed feeding distributor. The gas and liquid mixed feeding distributor can remarkably increase the area of gas and liquid contact interface, raise reaction speed, and lower oxygen consumption amount, and the polyphenyl ether reaction device that adopts the feeding distributor effectively improves the disadvantages that the traditional polyphenyl ether reaction devices have large bubbles, uneven distribution and easy blockage of gas pipelines, lowers the generation rate of byproducts and improves the quality of polyphenyl ether products.

Description

technical field [0001] The invention relates to a distributor, in particular to a gas-liquid mixed feed distributor, and also relates to a reaction device using the distributor. Background technique [0002] Polyphenylene ethers or polyphenylene oxides, referred to as PPE or PPO, has excellent chemical, physical and electrochemical properties. At the same time, polyphenylene ether and polypropylene, polystyrene, polycarbonate, polyamide, polyester, etc. Mixing modification produces a blend with chemical resistance, high temperature resistance, high strength and high fluidity, which can be widely used in electrical, automotive, aerospace and other industrial material fields. [0003] The preparation process of polyphenylene ether was first published in US Pat. No. 3,306,874 (Hay) and US Pat. No. 3,306,875 (Hay). Polyphenylene ether was prepared by using 2,6-dimethylphenol and copper chloride to react in an organic solvent. Then in US patents US3365422, US3639656, US3642699, ...

Claims

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Application Information

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IPC IPC(8): B01J10/00B01J19/00B01J19/18B01J19/26C08G65/44
Inventor 刘宇辉王海军高岱巍张洪波李瑞亢胡衍平
Owner CHINA NAT BLUESTAR GRP CO LTD
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