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Gas distributor and vinyl acetate synthesis reactor comprising the same

A synthesis reactor and gas distributor technology, applied in chemical instruments and methods, preparation of carboxylic acid esters, preparation of organic compounds, etc., can solve problems such as not being able to meet the high-precision control requirements of synthesis reactors, and achieve improved reaction control Accuracy, simplified structure, and improved reliability

Inactive Publication Date: 2012-11-21
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the support of the catalyst, there are some engineering problems no matter whether the cap, the support plate or the baffle plus spring are used.
In addition, the traditional temperature measurement method is to arrange a temperature measurement point in a reaction tube, which cannot meet the high-precision control requirements for the synthesis reactor.

Method used

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  • Gas distributor and vinyl acetate synthesis reactor comprising the same
  • Gas distributor and vinyl acetate synthesis reactor comprising the same
  • Gas distributor and vinyl acetate synthesis reactor comprising the same

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0047] as per figure 1 The structure shown allows for the fabrication and installation of the in-reactor gas distributor according to the invention. The specific structural parameters are as follows, the diameter of the reactor is 5000 mm, the diameter of the gas inlet is 600 mm, the diameter of the cylindrical shell of the gas distributor is 900 mm, the diameter of the spherical head of the gas distributor is the same, and the diameter of the cylindrical shell The length is 300 mm. The lower end of the cylindrical shell and the spherical head are evenly distributed with small holes, the diameter of the holes is 22 mm, and the distance between the centers of the circular holes is 30 mm.

example 2

[0049] as per figure 1 The structure shown allows for the fabrication and installation of the in-reactor gas distributor according to the invention. The specific structural parameters are as follows, the diameter of the reactor is 4000 mm, the diameter of the gas inlet is 500 mm, the diameter of the cylindrical shell of the gas distributor is 800 mm, the diameter of the spherical head is the same, and the length of the cylindrical shell is 250 mm. The spherical head has evenly distributed small holes with a diameter of 18 mm and a center-to-center distance of 27 mm.

example 3

[0051] as per figure 1 The structure shown allows for the fabrication and installation of the in-reactor gas distributor according to the invention. The specific structural parameters are as follows. The diameter of the reactor is 5000 mm, the diameter of the gas inlet is 600 mm, the diameter of the cylindrical shell of the gas distributor is 900 mm, and the diameter of the spherical head is 1200 mm. The height of the transition section is 120 mm. The lower end of the cylindrical shell and the spherical head are evenly distributed with small holes, the diameter of the holes is 22 mm, and the distance between the centers of the circular holes is 30 mm.

[0052] figure 2 for along Figure 5 The schematic longitudinal sectional view of the upper part of the vinyl acetate synthesis reactor according to the second embodiment of the present invention is taken by the section line B-B shown.

[0053] The upper part of the second embodiment of the vinyl acetate synthesis reactor o...

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Abstract

The invention relates to a gas distributor and a vinyl acetate synthesis reactor comprising the same. The gas distributor comprises an expanding current stabilization part and a spherical head, wherein the first end of the expanding current stabilization part is connected with the head of a multitubular vinyl acetate synthesis reactor, the second end corresponding to the first end of the expanding current stabilization part is connected with the spherical head of the gas distributor or the second end and the spherical head are formed integrally, the diameter of the first end of the expanding current stabilization part is larger than that of a reactor inlet, and distributing pores are uniformly arranged in the area coverage of the spherical head. According to the invention, studies by computational fluid dynamics show that by using the gas distributor with the above structure, the uniform distribution of gas can be well realized; by using the catalyst support mode of the above structure, the structure of the reactor can be greatly simplified, the manufacturing, installation, disassembly and maintenance of devices are convenient, and the incidence that the catalyst falls off and other accidents can be reduced; by using the temperature measurement mode disclosed herein, the control precision of the reactor can be well raised.

Description

technical field [0001] The present invention generally relates to a novel gas distributor and a vinyl acetate synthesis reactor. In particular, the present invention relates to a novel gas distributor capable of improving the reaction efficiency of ethylene-to-vinyl acetate synthesis reaction and a shell-and-tube vinyl acetate synthesis reactor comprising the novel gas distributor. Background technique [0002] Ethylene oxidation is a process mainly used in the industry for the synthesis of vinyl acetate. The raw material ethylene for the synthetic reaction of vinyl acetate can be prepared from ethanol, especially bio-ethanol. The process route of using bioethanol to produce ethylene as a raw material for the synthesis of vinyl acetate is of great significance for biomass resource utilization. The synthesis reaction process belongs to the gas-solid heterogeneous catalytic reaction, and the tubular fixed-bed reactor is the commonly used synthesis equipment. The production ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/00B01J8/06C07C69/15C07C67/04
Inventor 张敏华李永辉耿中峰姜浩锡张志强董秀芹
Owner TIANJIN UNIV
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