Crystalline monoammonium phosphate production system

Abstract

The invention discloses a crystalline monoammonium phosphate production system, and belongs to the technical field of production of monoammonium phosphate. The crystalline monoammonium phosphate production system comprises a monoammonium phosphate production part, a monoammonium phosphate finished product processing part, a re-drying vibrated fluidized bed (3) and a plate heat exchanger, wherein the monoammonium phosphate finished product processing part comprises a packaging device and multiple first-drying vibrated fluidized beds (1); inlets of the first-drying vibrated fluidized beds (1) are connected with the monoammonium phosphate production part; cold air inlets of the first-drying vibrated fluidized beds (1) are connected with a hot air blower (2); material outlets of the multiple first-drying vibrated fluidized beds (1) are connected with a material inlet of the re-drying vibrated fluidized bed (3); a material outlet of the re-drying vibrated fluidized bed (3), the plate heat exchanger and the packaging device are connected in sequence. According to the crystalline monoammonium phosphate production system disclosed by the invention, when obtained crystalline monoammonium phosphate is packaged, the temperature is below 40 DEG C, the water content is controlled within 0.1 percent, and the problem of product caking is solved.

Description

technical field [0001] The invention belongs to the technical field of monoammonium phosphate production, in particular to a crystalline monoammonium phosphate production system. Background technique [0002] Monoammonium phosphate, chemical preparation, white crystal, chemical formula is NH 4 h 2 PO 4 , heating will decompose into ammonium metaphosphate NH 4 PO 3 ), which can be made by the reaction of ammonia and phosphoric acid. It is mainly used as a fertilizer and a fireproof agent for wood, paper, and fabrics. It is also used in pharmaceuticals and ruminant animal feed additives. Stable in air. When the temperature is higher than the melting point, it decomposes and loses ammonia and water, forming ammonium metaphosphate and phosphoric acid and a mixture. There is a small part of decomposition at 100°C. It is most suitable to apply ammonium phosphate as a fertilizer during the growth of crops. Ammonium phosphate is acidic in the soil, and it may have adverse eff...

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Problems solved by technology

[0003] During the production process of crystalline monoammonium phosphate, the applicant found that the cooling effect of the finished product was not good, the temperature was high (usually around 80°C), the water content was difficult to control (usually around 0.2%), and serious agglomeration, etc.

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