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Bubbling reactor and use thereof

A technology of bubbling reactor and gas distributor, which is applied in the preparation of carboxylic acid by carbon monoxide reaction, chemical instruments and methods, organic chemistry, etc., can solve the problems of back mixing, unsatisfactory mixing effect, complex structure, etc., and achieve the promotion of mixing, Good gas-liquid mixing effect and high methanol conversion rate

Inactive Publication Date: 2015-08-05
SINOPEC SHANGHAI ENG +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] One of the technical problems to be solved by the present invention is that the prior art has the problems of unsatisfactory mixing effect, complex structure and serious back-mixing, and a new bubble reactor is provided

Method used

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  • Bubbling reactor and use thereof

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Embodiment 1

[0022] use figure 1 The shown reactor with draft tube is used in the reaction of synthesizing acetic acid from methanol. The raw material methanol, CO and catalyst undergo carbonylation reaction in the reactor under the conditions of 190°C and 3.0MPa.

[0023] The height-to-diameter ratio of the reactor is 3, and the ratio of the diameter of the guide tube to the diameter of the tower body is 0.7. The gas distributor is a double-ring gas distributor. The ratio of the outer pipe diameter of the gas distributor to the tower body diameter is 0.5, and the ratio of the inner pipe diameter to the tower body diameter is 0.3. The upper and lower parts of the gas distributor are opened at the same time, the total number of openings is 300, and the number of openings in the upper part is 95% of the total number of openings; the openings are evenly distributed at 45 degrees. The injection feeding device is a reduced-bore tube type, and the outlet diameter is 100mm.

[0024] The gas-li...

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Abstract

The invention relates to a bubbling reactor and a use thereof. The bubbling reactor solves the problem that the existing bubbling reactor has poor mixing effects and a complex structure and produces severe backmixing. Through use of a tower with a guide cylinder, a gas distributor arranged in a lower seal head of the tower, and a liquid phase injection feeding device, the bubbling reactor solves the above problem and can be used for industrial production of methanol low-pressure liquid phase synthesis of acetic acid.

Description

technical field [0001] The present invention relates to a bubble reactor and its application. Background technique [0002] Methanol low-pressure liquid-phase carbonylation reaction is the core process in the production process of acetic acid. During the reaction process, the raw materials methanol, carbon monoxide, flash column bottom reflux and recycle stream are continuously added to the reactor, and the main catalyst and co-catalyst Under the action of complex intermediate reactions, acetic acid is generated. This reaction process is a strong exothermic reaction, therefore, the process reactor needs to have good gas dispersion, gas-liquid mixing and good heat transfer capacity. [0003] Methanol low-pressure liquid-phase carbonylation of acetic acid is a typical vapor-liquid reaction, and the reactor types currently used in industrial plants include bubble column reactors, mechanically stirred tanks and hydraulically stirred tanks. A typical bubble reactor is mainly co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/08C07C53/08C07C51/12
Inventor 徐曼许慎艳张艺贾微贾震
Owner SINOPEC SHANGHAI ENG