The manufacturing method of ammonium chloride
Ammonium chloride is an inorganic compound widely used in chemical, pharmaceutical, agricultural and other fields. In the field of raw materials for chemical production, there are mainly several methods for manufacturing ammonium chloride:
1. Ammonia water method
Ammonia water method is to react ammonia water with hydrochloric acid to generate ammonium chloride crystals, which are then centrifuged, dried, and other processes to produce ammonium chloride products. The specific steps are as follows:
1 Mix ammonia and hydrochloric acid in a certain proportion, control the pH value within an appropriate range, and generate a saturated solution of ammonium chloride
2. Feed the saturated solution into the crystallizer and precipitate ammonium chloride crystals through cooling, stirring, and other methods
3. Centrifuge the crystallized material to obtain ammonium chloride crystals and mother liquor
4. Dry the ammonium chloride crystals to obtain the final ammonium chloride product
2、 Ammonium chloride mother liquor circulation method
Ammonium chloride mother liquor circulation method is to recycle the mother liquor in the production process of ammonium chloride, in order to reduce waste liquid discharge and lower production costs. The specific steps are as follows:
1 Mix ammonia and hydrochloric acid in a certain proportion to form a saturated solution of ammonium chloride
2. Feed the saturated solution into the crystallizer and precipitate ammonium chloride crystals through cooling, stirring, and other methods
3. Centrifuge the crystallized material to obtain ammonium chloride crystals and mother liquor
4. Return the mother liquor to the mixing step and continue to react with new raw materials to generate ammonium chloride crystals
5. Dry the ammonium chloride crystals to obtain the final ammonium chloride product
3、 The complex decomposition method is the reaction between ammonium carbonate and hydrochloric acid to produce ammonium chloride and carbon dioxide gas, which are then filtered, dried, and other processes to produce ammonium chloride products. The specific steps are as follows:
1 Mix ammonium carbonate and hydrochloric acid in a certain proportion to react to produce ammonium chloride and carbon dioxide gas
2. Filter the reacted solution to remove unreacted ammonium carbonate and impurities
3. Evaporate and concentrate the filtrate to obtain a saturated solution of ammonium chloride
4. Feed the saturated solution into the crystallizer and precipitate ammonium chloride crystals through cooling, stirring, and other methods
5. Centrifuge the crystallized material to obtain ammonium chloride crystals and mother liquor
6. Dry the ammonium chloride crystals to obtain the final ammonium chloride product
The above are several main manufacturing methods of ammonium chloride, each with its own advantages, disadvantages, and applicability. In actual production, suitable manufacturing methods can be selected based on specific circumstances to achieve maximum product quality and production efficiency. At the same time, in order to ensure product quality and environmental requirements, it is necessary to comprehensively monitor and manage the production process to ensure the stability and reliability of the production process.
