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Bubble tower reactor for enhancing acetylene dimerization

A bubbling tower and reactor technology, which is applied in the field of bubbling tower reactors for strengthening acetylene dimerization, can solve the problems of vinyl acetylene selectivity decline, seriousness, fluid back-mixing, etc., so as to reduce further contact and equipment costs. Low, selectivity-enhancing effect

Inactive Publication Date: 2012-07-18
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome problems such as the serious back-mixing of the fluid in the bubble column reactor / empty column of the prior art, the decrease in the selectivity of vinyl acetylene, and the serious impact on the scale-up experiment, the present invention proposes a bubble column that strengthens the dimerization of acetylene Reactor, the invention can improve the conversion rate of acetylene and the selectivity of vinyl acetylene

Method used

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  • Bubble tower reactor for enhancing acetylene dimerization
  • Bubble tower reactor for enhancing acetylene dimerization
  • Bubble tower reactor for enhancing acetylene dimerization

Examples

Experimental program
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Effect test

specific Embodiment 1

[0026] The dimensions of the bubble column reactor for enhanced acetylene dimerization are shown in Table 1.

[0027] The bubble column reactor size (unit: m) of the strengthened acetylene dimerization of table 1 specific example 1

[0028]

[0029] The liquid level height of the bubble column reactor liquid for enhanced acetylene dimerization is 5m.

[0030] The installation position of the baffle is: the baffle 2 is installed on the inner wall of the tower below the bubble column reactor liquid of the enhanced acetylene dimerization, and the bubble column reactor 1 of the enhanced acetylene dimerization in the present embodiment has 4 pieces such as figure 2 Rectangular baffle 2 shown; the material of said baffle 2 is the same as that of the bubble column; the thickness of said baffle 2 is 1 / 2 of the wall thickness of the bubble column; the width of said baffle 2 is 3 times of the wall thickness of the bubble column; the angle between the baffle plate 2 and the tower wa...

specific Embodiment 2

[0032] The size of the bubble column reactor for strengthening acetylene dimerization is as in specific example 1.

[0033] The liquid level height of the bubble column reactor liquid for strengthening acetylene dimerization is as in specific example 1.

[0034] The installation position of the baffle plate is: the baffle plate 2 is installed on the inner wall of the tower below the bubble column reactor liquid of the enhanced acetylene dimerization, and the bubble column reactor 1 of the enhanced acetylene dimerization in the present embodiment has 8 pieces such as figure 2 Rectangular baffle 2 shown; the material of said baffle 2 is the same as that of the bubble column; the thickness of said baffle 2 is 1 / 2 of the wall thickness of the bubble column; the width of said baffle 2 is 3 times of the wall thickness of the bubble column; the angle between the baffle plate 2 and the tower wall is 60 degrees; the length of the baffle plate 2 / diameter of the bubble column=0.4; The ...

specific Embodiment 3

[0036] The size of the bubble column reactor for strengthening acetylene dimerization is as in specific example 1.

[0037] The liquid level height of the bubble column reactor liquid for strengthening acetylene dimerization is as in specific example 1.

[0038] The installation position of the baffle is: a baffle 2 is installed on the inner wall of the tower below the bubble column reactor liquid for strengthening acetylene dimerization, and the bubble column reactor 1 for strengthening acetylene dimerization in the present embodiment has 3 pieces such as figure 2 Rectangular baffle 2 shown; the material of said baffle 2 is the same as that of the bubble column; the thickness of said baffle 2 is 1 / 2 of the wall thickness of the bubble column; the width of said baffle 2 is 3 times of the wall thickness of the bubble column; the angle between the baffle plate 2 and the tower wall is 60 degrees; the length of the baffle plate 2 / diameter of the bubble column=0.4; The distance b...

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Abstract

In order to solve the problems of serious backmixing of fluid, low selectivity of vinyl acetylene, large side output of high polymers and the like in the bubble tower reactor / void tower in the prior art, the invention provides a bubble tower reactor for enhancing acetylene dimerization. The bubble tower reactor comprises a bubble tower, wherein 2 to 8 baffles are connected to the inner wall of the bubble tower, are a circle, a rectangle or a polygon and preferably are the rectangle, and one short edge of the rectangle is in circular arc transition; and the optimum thickness of each baffle is 1 / 2 of the wall thickness of the bubble tower, the optimum width of each baffle is 3 times the wall thickness of the bubble tower, and an included angle between the lower surface of each baffle and the tower wall is 30 to 120 degrees. The bubble tower reactor has a simple structure and is convenient to manufacture and low in equipment cost; the backmixing of acetylene gas can be reduced effectively under the same working condition, so that the average concentration of the acetylene gas is improved, the reaction speed of acetylene dimerization is improved, the further contact of products and acetylene is reduced, and the conversion rate of the acetylene and the selectivity of the vinyl acetylene can be improved.

Description

technical field [0001] The invention relates to a bubble column reactor, in particular to a bubble column reactor for strengthening acetylene dimerization. Background technique [0002] Vinyl acetylene is an intermediate for the production of chloroprene rubber. It is mainly produced by dimerization of acetylene. This method is to continuously pass the raw material acetylene gas into the liquid solution containing the catalyst, and a part of the acetylene gas reacts under the action of the catalyst to form ethylene. Another part of the unreacted acetylene gas flows out of the reactor together with the generated vinyl acetylene, and is separated in the subsequent separation system to obtain a product containing a small amount of impurities, and the acetylene is returned to the raw material system. At present, most of the acetylene dimerization reactions are carried out in traditional bubble column reactors / empty columns. For traditional bubble column reactors, the disadvanta...

Claims

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Application Information

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IPC IPC(8): B01J10/00C07C11/30C07C2/06C07C2/08
Inventor 刘作华曾启琴陶长元杜军孙瑞祥刘仁龙范兴宁伟征余亚玲孙大贵左赵宏陈南雄彭敏马纪祥谢昭明李泽全
Owner CHONGQING UNIV
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