Process for producing guanidine nitrate

A production process, the technology of guanidine nitrate, applied in the field of guanidine nitrate production process, can solve problems such as side reactions and dicyandiamide decomposition, and achieve the effects of improving stability, speeding up reaction speed and improving quality

Inactive Publication Date: 2012-01-04
SUZHOU WUGAN PHARMA
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Using the original reaction process, the reaction process needs to be strictly controlled. When the entire reaction process is too intense or the temperature is too high, dicyandiamide will decompose and cause other side reactions

Method used

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  • Process for producing guanidine nitrate
  • Process for producing guanidine nitrate

Examples

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Embodiment Construction

[0009] figure 1 A production process of guanidine nitrate is shown, and its process steps are: use ammonium nitrate and dicyandiamide as raw materials, react, obtain guanidine nitrate product after the reaction, carry out cooling treatment to it, obtain guanidine nitrate solid, and then crush After processing and grinding, the finished product is obtained. During the reaction, continuous circulation of ammonia gas is added to the reaction solution as an auxiliary agent.

[0010] Specifically, in the reaction solvent of each part of guanidine nitrate, the mass distribution of the ammonia gas additive with ammonium nitrate and dicyandiamide during the reaction is: 1000Kg of ammonium nitrate, 500Kg of dicyandiamide, and 5-10Kg of ammonia gas.

[0011] In the reaction process of the reaction auxiliary ammonia gas of the present invention, the method of circulating injection is adopted to ensure that the reaction solution is alkaline, and the volatilization of the gas can also tak...

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Abstract

The invention relates to a process for producing guanidine nitrate, which comprises the following steps: reacting ammonium nitrate and dicyandiamide, which serve as raw materials, obtaining a guanidine nitrate product after reaction, cooling the guanidine nitrate product to obtain solid guanidine nitrate, crushing and grinding to obtain a finished product. The process is characterized in that continuous circulating ammonia gas is added into the reaction solution as an assistant in a reaction process. In the processing procedure of each produced guanidine nitrate, the ratio of ammonia gas to ammonium nitrate to dicyandiamide in reaction is (5-10)kg:1,000kg:500kg. The ammonia gas serves as an alkaline protective agent in the reaction solution to improve the quality of the coarse guanidine nitrate formed by an initial reaction and improve the stability of the product. The decomposition of dicyandiamide and other side reaction caused by the decomposition of dicyandiamide in an improper environment are prevented. The reaction speed and efficiency are increased.

Description

technical field [0001] The invention relates to a production process of guanidine nitrate added with a catalytic assistant. Background technique [0002] In the existing disclosed production process of guanidine nitrate, the main raw materials used are ammonium nitrate and dicyandiamide, wherein the mass ratio of the raw materials ammonium nitrate and dicyandiamide is formulated in strict accordance with the mass ratio of 2:1. For specific reaction, during the reaction, add an appropriate amount of sodium hydroxide as the reaction solvent to ensure that the alkaline pH value of the solution is around 9.5, and the temperature should also be controlled within a certain range during the reaction. Using the original reaction process requires strict control of the reaction process. When the entire reaction process is too intense or the temperature is too high, dicyandiamide will decompose and cause other side reactions. Contents of the invention [0003] The technical problem ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C279/02C07C277/02
Inventor 施方浩
Owner SUZHOU WUGAN PHARMA
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