Continuous production method of sodium azide

A production method, sodium azide technology, applied in the direction of azide acid/azide/halogen azide, etc., can solve the problems of unsuitability for industrial production, low output of sodium azide, high production cost, etc., and achieve good Effects of market prospect, production expansion and cost reduction

Inactive Publication Date: 2014-02-05
ANHUI LANGXI LIANKE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But because existing production adopts intermittent process, the output of sodium az...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The first step: Install a glass wool packing tower on the four-necked flask, and pass cooling water through the jacket;

[0014] The second step: 1.5mol ethyl nitrite gas is introduced from the bottom of the flask, and 1.2mol hydrazine hydrate methanol solution is added dropwise from the top of the tower;

[0015] The third step: after complete reaction, remove the reaction liquid, carry out distillation, separate methanol, obtain the sodium azide product with a synthesis rate of 85%.

Embodiment 2

[0017] The first step: Install a glass wool packing tower on the four-necked flask, and pass cooling water through the jacket;

[0018] The second step: 3mol ethyl nitrite gas is introduced from the bottom of the flask, and 2.4mol hydrazine hydrate methanol solution is added dropwise from the top of the tower;

[0019] The third step: after complete reaction, remove the reaction solution, carry out distillation, separate methanol, and obtain the sodium azide product with a synthesis rate of 90%.

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Abstract

The invention discloses a continuous production method of sodium azide. According to the method, a packed tower is used as a reactor such as a fixed bed, so that gas and liquid completely come into contact with each other to finish synthetic reaction within a certain time to realize continuous production, and the synthesis yield is further improved; process conditions are simple, few chemical equipment is used, a flow is short, and the method is applied to industrial production; therefore, the method has huge market space.

Description

technical field [0001] The invention belongs to the technical field of medicine preparation, and in particular relates to a continuous production method of sodium azide. Background technique [0002] Sodium azide was first used as a foaming agent for automobile airbags. With the continuous development of the domestic pharmaceutical industry, more and more synthetic drugs are now used to treat human diseases, and the market prospect is very promising. But because existing production adopts intermittent process, the output of sodium azide is relatively low, and production cost is higher, is not suitable for industrialized production. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a continuous production method of sodium azide which can be produced continuously, has a high synthesis rate and is easy to realize industrialized production. [0004] For solving above technical problem, technical scheme of the present ...

Claims

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Application Information

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IPC IPC(8): C01B21/08
Inventor 贾玉梁
Owner ANHUI LANGXI LIANKE IND
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