Acetyl bromide synthesis production process

A production process, the technology of acetyl bromide, which is applied in the production process field of acetyl bromide synthesis, can solve the problems of complex production process, low purity, low yield, etc., and achieve the effect of high purity, easy availability of raw materials, and low investment in equipment

Inactive Publication Date: 2014-10-08
蚌埠团结日用化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Acetyl bromide is a colorless fuming liquid in appearance and properties. It turns yellow when it is exposed to the air. Its flash point is 1°C, and its melting point is -96.5°C. Boiling point: 76.7°C. Dye manufacturing At present, the method of indust

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A kind of production technique of acetyl bromide synthesis, comprises following process step,

[0017] a. Select a brominated enamel reactor and add 450kg of acetic anhydride to the reactor, start the agitator to stir, and feed steam into the jacket of the reactor to start heating. The reactors all adopt brominated enamel reactors, and The reactor is equipped with a stirrer and a jacket.

[0018] b. After the temperature in the bromination enamel reactor in step a is heated to 75° C., add 1000 kg of liquid bromine dropwise to the reactant, and continue to raise the temperature until the temperature rises to 95° C.

[0019] c. release the hydrogen bromide gas produced after the reaction in step b, then reflux for 2.5h, and absorb the hydrogen bromide gas tail gas released by water.

[0020] d. After the reflux in the above step c ends, stop heating, and then feed cold water into the reaction kettle to cool the material to room temperature.

[0021] e. Pour the cooled r...

Embodiment 2

[0023] A kind of production technique of acetyl bromide synthesis, comprises following process step,

[0024] a. Select a brominated enamel reactor and add 500kg of acetic anhydride to the reactor, start the stirrer to stir, and feed steam into the jacket of the reactor to start heating. The reactors all use brominated enamel reactors, and The reactor is equipped with a stirrer and a jacket.

[0025] b. After the temperature in the bromination enamel reactor in step a is heated to 80°C, add 1100kg of liquid bromine dropwise to the reactant, and continue to raise the temperature until the temperature rises to 110°C.

[0026] c. release the hydrogen bromide gas produced after the reaction in step b, then reflux for 2.8h, and the hydrogen bromide gas tail gas released is absorbed by water.

[0027] d. After the reflux in the above step c ends, stop heating, and then feed cold water into the reaction kettle to cool the material to room temperature.

[0028] e. Pour the cooled re...

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PUM

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Abstract

The invention relates to an acetyl bromide synthesis production process, and relates to the technical field of chemical engineering. According to the invention, acetyl bromide is obtained through a bromination reaction of acetic anhydride and liquid bromine. The process provided by the invention has the following advantages: preparation is convenient and simple; the process is environment-friendly and pollution-free; raw materials are easy to obtain; equipment investment is low; product purity is high; operation is convenient; the prepared acetyl bromide has good application effect; and the prepared acetyl bromide is safe and reliable.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a production process for the synthesis of acetyl bromide. Background technique [0002] Acetyl bromide is a colorless fuming liquid in appearance and properties. It turns yellow when it is exposed to the air. Its flash point is 1°C, and its melting point is -96.5°C. Boiling point: 76.7°C. Dye manufacturing At present, the method of industrial production of acetyl bromide is still relatively traditional. This traditional production method has problems such as low yield, low purity and serious pollution, and the production process is relatively complicated, which is difficult to meet human needs. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a production process for the synthesis of acetyl bromide with high purity and simple preparation process. [0004] The technical problem to be solved by the present inv...

Claims

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Application Information

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IPC IPC(8): C07C51/60C07C53/40
CPCC07C51/60
Inventor 徐德平
Owner 蚌埠团结日用化学有限公司
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