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Adipic acid monoesterification production device capable of realizing continuous feeding and application thereof

An adipic acid mono- and production device technology, which is applied in the preparation of carboxylate, organic chemistry, chemical instruments and methods, etc., can solve the problems of methanol gas back-channeling and large gas leakage, etc.

Active Publication Date: 2019-03-29
SINOPEC SHANGHAI ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] One of the technical problems to be solved by the present invention is the problem of large gas leakage and methanol gas reverse channeling in the prior art. A new continuous feed adipic acid monoesterification production device is provided, which has a small gas leakage , Methanol gas does not reverse the advantages of channeling

Method used

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  • Adipic acid monoesterification production device capable of realizing continuous feeding and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of adipic acid monoesterification production unit of continuous feeding, such as figure 1 As shown, it includes pre-esterification reaction kettle, weighing hopper, intermediate hopper, pre-esterification buffer tank, and screw conveyor. The outlet of the screw conveyor is connected with the pre-esterification reactor, and the outlet of the pre-esterification buffer tank is connected with the pre-esterification buffer tank; the adipic acid raw material enters at least one The pre-esterification reactor is in contact with the incoming methanol raw material, the output of the pre-esterification buffer tank enters the pre-esterification buffer tank, and the bottom stream of the pre-esterification buffer tank is sent to the catalytic reaction tower as adipate monoesterification product; , there is a rotary valve on the pipeline connecting the weighing hopper and the intermediate hopper, the rotary valve is driven by the motor, so that the impeller with an equal struc...

Embodiment 2

[0033] A kind of adipic acid monoesterification production unit of continuous feeding, such as figure 1 As shown, it includes pre-esterification reaction kettle, weighing hopper, intermediate hopper, pre-esterification buffer tank, and screw conveyor. The outlet of the screw conveyor is connected with the pre-esterification reactor, and the outlet of the pre-esterification buffer tank is connected with the pre-esterification buffer tank; the adipic acid raw material enters at least one The pre-esterification reactor is in contact with the incoming methanol raw material, the output of the pre-esterification buffer tank enters the pre-esterification buffer tank, and the bottom stream of the pre-esterification buffer tank is sent to the catalytic reaction tower as adipate monoesterification product; , there is a rotary valve on the pipeline connecting the weighing hopper and the intermediate hopper. The rotary valve is driven by the motor to make the impeller with an equal struct...

Embodiment 3

[0037] A kind of adipic acid monoesterification production unit of continuous feeding, such as figure 1 As shown, it includes pre-esterification reaction kettle, weighing hopper, intermediate hopper, pre-esterification buffer tank, and screw conveyor. The outlet of the screw conveyor is connected with the pre-esterification reactor, and the outlet of the pre-esterification buffer tank is connected with the pre-esterification buffer tank; the adipic acid raw material enters at least one The pre-esterification reactor is in contact with the incoming methanol raw material, the output of the pre-esterification buffer tank enters the pre-esterification buffer tank, and the bottom stream of the pre-esterification buffer tank is sent to the catalytic reaction tower as adipate monoesterification product; , there is a rotary valve on the pipeline connecting the weighing hopper and the intermediate hopper. The rotary valve is driven by the motor to make the impeller with an equal struct...

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Abstract

The invention relates to an adipic acid monoesterification production device capable of realizing continuous feeding and an application thereof. The invention is mainly to solve the problems of largegas leakage amount and methanol gas reverse channeling in the prior art. The adipic acid monoesterification production device capable of realizing continuous feeding provided by the invention comprises a pre-esterification reaction kettle, a weighing feed hopper, an intermediate feed hopper, a pre-esterification buffer tank and a screw conveyor, wherein an adipic acid feeding pipe is successivelyconnected with the weighing feed hopper and the intermediate feed hopper; the outlet of the intermediate feed hopper is connected with the screw conveyor; the outlet of the screw conveyor is connectedwith the pre-esterification reaction kettle; and the outlet of the pre-esterification reaction kettle is connected with the pre-esterification buffer tank. Thus, the above-mentioned problems are wellsolved. The adipic acid monoesterification production device capable of realizing continuous feeding provided by the invention can be used in adipic acid monoesterification production.

Description

technical field [0001] The invention relates to a continuous feeding adipate monoesterification production device and its application, belonging to the technical field of fire safety. Background technique [0002] Monomethyl adipate, also known as fatty acid methyl ester, has a molecular weight of 160 and a molecular formula of C 7 h 12 o 4 , is a colorless, clear and transparent liquid with a high boiling point, easily soluble in alcohols and ethers, but insoluble in water. As an important organic compound, it is mainly used in organic synthesis, plasticizer, medicine and spices, etc. It is formed by esterification of adipic acid and methanol under the condition of catalyst. [0003] Adipic acid is a white crystal with a melting point of 153°C, slightly soluble in water, easily soluble in most organic solvents such as alcohol and ether, and its solubility in water changes greatly with temperature. Adipic acid is an industrially important dicarboxylic acid, and its outp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C67/08C07C69/44
CPCC07C67/08C07C69/44
Inventor 徐曼张亚男陈迎刘肖肖张翼张艺余冬明
Owner SINOPEC SHANGHAI ENG
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