Method for reinforcing mixing effect of hydraulic reaction apparatus

A technology of reaction equipment and mixing effects, applied in chemical instruments and methods, chemical methods for reacting liquids and gaseous media, carbon monoxide reaction to prepare carboxylic acids, etc., can solve complex reactor structures, gas-liquid and liquid-liquid Problems such as unsatisfactory mixing effect

Inactive Publication Date: 2014-09-10
SINOPEC SHANGHAI ENG +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the gas-liquid and liquid-liquid mixing effects in the prior art are unsatisfactory and the reactor structure is complex, and a new method for strengthening the mixing effect of hydraulic reaction equipment is provided

Method used

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  • Method for reinforcing mixing effect of hydraulic reaction apparatus

Examples

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Effect test

Embodiment 1

[0020] use figure 1 The hydraulic reaction equipment shown includes an air outlet 1, a liquid injection device 2, an air inlet 5, a gas distributor 3, a liquid outlet 6, and a liquid inlet 4; wherein, the liquid inlet 4 and the air inlet 5 are located at At the bottom of the reaction equipment, the gas outlet 1 is located at the top, and the liquid outlet 6 is symmetrically arranged on both sides of the lower head at the bottom.

[0021] Among them, the distance h between the upper head and the liquid injection device 2 1 The distance h between the liquid injection device 2 and the gas distributor 3 2 The relationship is: h 2 :h 1 =0.05. The diameter of the reactor is 4000mm, the gas distributor is a double-ring gas distributor, the outer diameter is 2000mm, the inner diameter is 1000mm, the number of openings is 300, and the openings are equally spaced and evenly distributed. The gas distributor 3 is located 1000mm below the lower head. The liquid injection device is a ...

Embodiment 2

[0024] Same as [Example 1], only the distance h between the upper head and the liquid injection device 2 1 The distance h between the liquid injection device 2 and the gas distributor 3 2 The relationship is: h 2 :h 1 =0.1. The diameter of the reactor is 4000mm, the gas distributor is a double-ring gas distributor, the outer diameter is 2000mm, the inner diameter is 1000mm, the number of openings is 300, and the openings are equally spaced and evenly distributed. The gas distributor 3 is located 1000mm below the lower head. The liquid injection device is a reduced-bore tube type, with an inlet diameter of 300mm and an outlet diameter of 200mm.

[0025] The above-mentioned reactor is used in the reaction of synthesizing acetic acid from methanol. The raw material methanol, CO and catalysts undergo carbonylation reaction in the reactor under the conditions of 190°C and 3.0 MPa, and the gas-liquid and liquid-liquid mixing in the reactor is sufficient. The reaction result is...

Embodiment 3

[0027] Same as [Example 1], only the distance h between the upper head and the liquid injection device 2 1 The distance h between the liquid injection device 2 and the gas distributor 3 2 The relationship is: h 2 :h 1 =0.25. The diameter of the reactor is 4000mm, the gas distributor is a double-ring gas distributor, the outer diameter is 2000mm, the inner diameter is 1000mm, the number of openings is 300, and the openings are equally spaced and evenly distributed. The gas distributor 3 is located 1000mm below the lower head. The liquid injection device is a reduced-bore tube type, with an inlet diameter of 300mm and an outlet diameter of 200mm.

[0028] The above-mentioned reactor is used in the reaction of synthesizing acetic acid from methanol. The raw material methanol, CO and catalysts undergo carbonylation reaction in the reactor under the conditions of 190°C and 3.0 MPa, and the gas-liquid and liquid-liquid mixing in the reactor is sufficient. The reaction result i...

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Abstract

The invention relates to a method for reinforcing the mixing effect of a hydraulic reaction apparatus, and mainly solves the problems of unsatisfactory gas-liquid and liquid-liquid mixing effect and complex structure in the prior art. The hydraulic reaction apparatus is used in the low pressure liquid phase synthesis of acetic acid from methanol. The hydraulic reaction apparatus comprises a liquid jet device 2 and a gas distributor, and the gas distributor is positioned below the liquid jet device 2. The above technical scheme well solves the problems, and the method can be used in the industrial production of the low pressure liquid phase synthesis of acetic acid from methanol.

Description

technical field [0001] The invention relates to a method for strengthening the mixing effect of hydraulic reaction equipment. Background technique [0002] Utilizing methanol low-pressure liquid-phase carbonylation reaction, making carbon monoxide and methanol fully gas-liquid mixed in the reactor to synthesize acetic acid technology is currently the most commonly used acetic acid production technology in the world. Document CN101090880A discloses a kind of manufacture method of acetic acid, and this method comprises in the presence of rhodium catalyst, iodine salt, methyl iodide, methyl acetate and water, methanol and carbon monoxide are continuously reacted, and the concentration of acetaldehyde in the reaction solution is maintained At 500 ppm or less, acetic acid is produced at a production rate of 11 mol / hour or more. In existing reactors, mechanical stirring is often used to achieve full mixing of gas-liquid and liquid-liquid. However, due to the large amount of corro...

Claims

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Application Information

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IPC IPC(8): B01J10/00C07C53/08C07C51/12
Inventor 许慎艳张艺贾微贾震
Owner SINOPEC SHANGHAI ENG
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