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Method for removing Fe<3+> and organic matters in hydrazine hydrate obtained by ketazine process

A ketazine method, hydrazine hydrate technology, applied in the directions of nitrogen and non-metallic compounds, hydrazine, etc., can solve the problems of excessive ion content and affect the appearance of hydrazine hydrate products, and achieve the effect of reducing organic content, improving quality and economic benefits

Active Publication Date: 2019-09-17
YIBIN HAIFENG HERUI +1
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Problems solved by technology

[0008] The purpose of the invention is to solve the problem of Fe in hydrazine hydrate in the prior art 3+ The ion content exceeds the standard, thereby affecting the problem of the appearance of the hydrazine hydrate product, and a method for removing Fe in the ketazine method hydrazine hydrate is provided 3+ and organic methods

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  • Method for removing Fe&lt;3+&gt; and organic matters in hydrazine hydrate obtained by ketazine process
  • Method for removing Fe&lt;3+&gt; and organic matters in hydrazine hydrate obtained by ketazine process

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] like figure 1 As shown, a method for removing Fe in hydrazine hydrate by ketazine method 3+ Settling tank, the settling tank includes a tank body 1, a central inner cylinder 2 and a tank bottom 3, the tank body 1 and the tank bottom 3 are connected, and the central inner cylinder 2 is coaxial with the tank body 1 and fixed vertically on In the tank body 1; the top of the central inner tube 2 is lower than the top of the tank body 1, and the top of the central inner tube 2 is connected to the side wall of the tank body 1; the bottom of the tank 3 is an inverted conical bottom; A conical flow stabilizing plate 4 is provided between the center inner cylinder 2 and the groove bottom 3, and the stabilizing device is used to fix the described flow stabilizing plate 4 between the central inner cylinder 2 and the groove bottom 3. The outer diameter of ...

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Abstract

The invention belongs to the technical field of hydrazine hydrate obtained by ketazine process, and discloses a method for removing Fe<3+> and organic matters in the hydrazine hydrate obtained by the ketazine process. Iron compounds are added into crude to- be -settled and purified hydrazine hydrate after a hydrazine hydrate hydrolysis system, and the crude hydrazine hydrate is introduced into a settling tank for settlement. According to the invention, the iron compounds are added into the crude to- be -settled and purified hydrazine hydrate after the hydrazine hydrate hydrolysis system, the efficiency of generating black particle impurities from the Fe<3+> ions is improved by increasing the concentration of the Fe<3+> ions in the crude hydrazine hydrate, and the Fe<3+> ion content in the settled hydrazine hydrate can be stably controlled below 1 ppm; and in the process that the Fe<3+> ions generate the black particle impurities and the black particle impurities are agglomerated, the organic impurities in the hydrazine hydrate are adsorbed and wrapped, so that the content of the organic matters in hydrazine hydrate products is further reduced, stable quality control of the hydrazine hydrate obtained by the ketazine process is realized, the method can be applied to high-end fields with higher requirements on impurities in the hydrazine hydrate, and the quality and economic benefits of the hydrazine hydrate products are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of hydrazine hydrate by ketazine method, in particular to a method for removing Fe in the production of hydrazine hydrate by ketazine method. 3+ and organic methods. Background technique [0002] Hydrazine hydrate, also known as: hydrazine hydrate, chemical formula is N 2 h 4 ·H 2 O, a strong reducing agent, is an important chemical raw material, and is also a raw material for medicine, pesticides, dyes, foaming agents, developers, and antioxidants; it is used for deoxidizing boiler water, producing high-purity metals, and synthesizing and reducing organic compounds. , separation of rare elements, and also used in the manufacture of rocket fuel and explosives. With the advancement of technology and the development of society, the application fields of hydrazine hydrate are constantly expanding in recent years. The production methods of hydrazine hydrate mainly include Raschig method, urea method, ketazin...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B21/16
CPCC01B21/16
Inventor 王政强谢濠江缑可贞石晓林王万萍向杨魏欣煜徐慧远
Owner YIBIN HAIFENG HERUI
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