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[Chemical Knowledge]：Production and manufacturing method and process flow of ammonium oxalate

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The manufacturing method
of ammonium oxalate
1. Introduction

ammonium oxalate is an important chemical production raw material, widely used in medicine, printing and dyeing, plastics, metallurgy and other fields. Therefore, it is of great significance to study the manufacturing method of ammonium oxalate for improving product quality, reducing production costs and promoting industrial development. This paper will introduce the manufacturing method of ammonium oxalate in detail, including the reaction principle, process flow, equipment selection, operation points and so on.

2. reaction principle

The manufacture of ammonium oxalate is mainly obtained by the reaction of oxalic acid and ammonia water. The reaction equation is as follows:

H2C2O4 2NH3 H2O → (NH4)2C2O4 H2O

This reaction is an acid-base neutralization reaction. Oxalic acid is an acidic substance and ammonia water is an alkaline substance. The two react to generate ammonium oxalate and water.

3. process

ammonium oxalate manufacturing process mainly includes the following steps:

1 ingredients: oxalic acid and ammonia water in a certain proportion into the reactor.

2. Reaction: Under stirring conditions, the reaction temperature and time were controlled to fully react oxalic acid with ammonia water to generate ammonium oxalate.

3. Crystallization: The reaction solution was cooled to a certain temperature to precipitate ammonium oxalate crystals.

4. Centrifugation: The crystallization solution was centrifuged to obtain ammonium oxalate crystals and a mother liquor.

5. Drying: The ammonium oxalate crystals are dried to obtain the finished product ammonium oxalate.

4. equipment selection

ammonium oxalate manufacturing need to choose the following equipment:

1. reaction kettle: for the reaction of oxalic acid and ammonia, corrosion resistance, good sealing reaction kettle should be selected.

2. Crystallization tank: for the crystallization of ammonium oxalate, the crystallization tank with stirring and cooling device should be selected.

3. Centrifuge: For the separation of ammonium oxalate crystals and mother liquor, the centrifuge with high degree of automation and good separation effect should be selected.

4. Drying equipment: For the drying of ammonium oxalate crystals, drying equipment with high efficiency and low energy consumption should be selected.

5. operation points

1. control reaction temperature and time: oxalic acid and ammonia reaction is exothermic reaction, need to control the reaction temperature and time, avoid product decomposition and side reaction.

2. Control the crystallization temperature and cooling rate: The crystallization temperature and cooling rate of ammonium oxalate have a great influence on the crystal size and purity, and it is necessary to control the appropriate crystallization temperature and cooling rate.

3. Keep the equipment clean and sanitary: The ammonium oxalate manufacturing process involves corrosive substances, and it is necessary to keep the equipment clean and sanitary to avoid equipment corrosion and pollution.

6. safety and environmental protection measures

1. Strengthen safety production management: formulate a sound safety production management system and operating procedures, strengthen staff safety training and education, to ensure that the production process is safe and reliable.

2. Strengthen the treatment of waste gas and waste water: effectively control the waste gas and waste water generated in the production process, meet the national emission standards, and protect the environment and ecology.

7. conclusion

ammonium oxalate manufacturing method mainly includes the reaction principle, process flow, equipment selection, operation points and other aspects, by controlling the appropriate reaction conditions, crystallization temperature and cooling rate and other factors, can produce high quality, high purity ammonium oxalate products. At the same time, strengthen safety and environmental protection measures to ensure that the production process is safe and reliable, and protect the environment and ecology.

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