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Reaction device for preparing isobutyric acid

A reaction device, the technology of isobutyric acid, applied in the direction of chemical/physical/physical chemical nozzle reactor, etc., can solve the problems of easy explosion and long reaction time, so as to improve the reaction speed, avoid explosion accidents, and reduce energy consumption. consumption effect

Pending Publication Date: 2020-12-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The preparation method of isobutyric acid is mainly isobutyraldehyde or isobutanol oxidation method, wherein, the traditional isobutyraldehyde oxidation method does not use catalyst, but directly adopts air or oxygen to oxidize isobutyraldehyde, and its productive rate is as high as 95%, Although the method has a higher yield, the reaction time is longer, and the risk of explosion is prone to occur in the reaction process.

Method used

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  • Reaction device for preparing isobutyric acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] exist figure 1 Carry out the preparation of isobutyric acid in the shown device, at first in reactor 1, be filled with 2 kilograms of oxygen through gas feed pipe 2, the mixed emulsion of isobutyraldehyde and water (the content of isobutyraldehyde in the mixed solution is 50% by weight ) enters the liquid distributor 8 in the reactor 1 through the liquid feed pipe 2 through the feed pump 21; the circulation pump 31 pumps the gas in the upper part of the reactor 1 into the gas distributor 9 by the gas circulation line 7; the liquid distributor 8 The isobutyraldehyde-water mixture coming from the gas distributor 9 is driven by oxygen and sprayed into the reaction kettle 1 through the atomization unit 5 (specifically, the atomization nozzle) for rapid oxidation. The temperature in the reaction kettle 1 is 80°C and the pressure is 0.25°C. MPa, the reaction time is 2h. The liquid at the bottom of the reaction kettle 1 is discharged through the discharge pipe 4 for oil-water...

Embodiment 2

[0069] First, 8 kilograms of oxygen are charged into the reactor 1 through the gas feed pipe 2, and the mixed emulsion of isopropanal and water (the content of isobutyraldehyde in the mixed solution is 60% by weight) is passed through the feed pump 21 by the liquid feed pipe 2. Enter the liquid distributor 8 in the reactor 1; the circulation pump 31 pumps the upper gas in the reactor 1 into the gas distributor 9 through the gas circulation line 7; the isobutyraldehyde water coming from the liquid distributor 8 and the gas distributor 9 is mixed The liquid is driven by oxygen and sprayed into the reaction kettle 1 through the atomization unit 5 (specifically, the atomization nozzle) for rapid oxidation. The temperature in the reaction kettle 1 is 30° C., the pressure is 0.25 MPa, and the reaction time is 3 hours. The liquid at the bottom of the reaction kettle 1 is discharged through the discharge pipe 4 for oil-water separation, and the isobutyric acid contained in the water ph...

Embodiment 3

[0072] At first in reactor 1, be charged with 5 kilograms of oxygen through gas feed pipe 2, the mixed emulsion of isopropanal and water (the content of isobutyraldehyde in the mixed solution is 70% by weight) by liquid feed pipe 2 through feed pump 21 Enter the liquid distributor 8 in the reactor 1; the circulation pump 31 pumps the upper gas in the reactor 1 into the gas distributor 9 through the gas circulation line 7; the isobutyraldehyde water coming from the liquid distributor 8 and the gas distributor 9 is mixed The liquid is driven by oxygen and sprayed into the reaction kettle 1 through the atomization unit 5 (specifically, the atomization nozzle) for rapid oxidation. The temperature in the reaction kettle 1 is 50°C, the pressure is 0.4MPa, and the reaction time is 3h. The liquid at the bottom of the reaction kettle 1 is discharged through the discharge pipe 4 for oil-water separation, and the isobutyric acid contained in the water phase is further separated.

[0073]...

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Abstract

The invention relates to the field of organic chemical synthesis, and discloses a reaction device for preparing isobutyric acid, which comprises a reaction kettle (1), a liquid feeding pipe (2) and agas feeding pipe (3) arranged on the reaction kettle (1), and a discharging pipe (4) arranged at the bottom of the reaction kettle (1), and is characterized in that the liquid feeding pipe (2) is communicated with an atomizing unit (5) arranged in the reaction kettle (1); the atomizing unit is used for atomizing a mixed solution of introduced iso-butyraldehyde and water; the gas feeding pipe (3) is used for introducing oxygen-containing gas; and the discharging pipe (4) is used for discharging liquid at the bottom of the reaction kettle. The reaction device provided by the invention can effectively avoid the occurrence of burning explosion accidents in the isobutyric acid preparation process, and meanwhile, the atom economy of the reaction is improved, the reaction speed is increased, andthe energy consumption is reduced.

Description

technical field [0001] The invention relates to the field of organic chemical synthesis, in particular to a reaction device for preparing isobutyric acid. Background technique [0002] The preparation method of isobutyric acid is mainly isobutyraldehyde or isobutanol oxidation method, wherein, the traditional isobutyraldehyde oxidation method does not use catalyst, but directly adopts air or oxygen to oxidize isobutyraldehyde, and its productive rate is as high as 95%, Although the method has a higher yield, the reaction time is longer, and the danger of explosion is prone to occur in the reaction process. [0003] However, it is undeniable that if the safety problem of isobutyraldehyde is directly oxidized with oxygen at 20-50°C to produce isobutyric acid, the process will have greater atom economy. [0004] Therefore, there is an urgent need to provide a safer reaction device to improve the atom economy of the reaction, increase the reaction speed, and reduce energy consu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/26
CPCB01J19/26B01J2219/0072
Inventor 王振刚费轶贾学五张帆刘静如
Owner CHINA PETROLEUM & CHEM CORP
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