Cooling process for potassium nitrate production

Abstract

The invention relates to a cooling process for potassium nitrate production, which comprises a cooling tank, wherein a cooling mode of the cooling tank adopts internal cooling or external cooling which is selected according to the temperature of mother liquor, the external cooling adopts a spraying water tank, the cooling tank is arranged in the spraying water tank, the internal cooling adopts an internal coil pipe, the internal coil pipe is arranged in the cooling tank; low-temperature magnesium chloride is input into the inner coil pipe, a buffer pool is arranged on one side of the spraying water pool, a cooling pipe is arranged in the buffer pool, the cooling pipe is connected to the inner coil pipe; and after the absorption temperature of the low-temperature magnesium chloride is increased, the low-temperature magnesium chloride is cooled through the cooling pipe and finally stored. The cooling process has the advantages that when the temperature of the mother liquor is 80-50 DEG C, external cooling is adopted, that is, tap water is sprayed to the cooling tank through the spraying water tank; when the temperature of the mother liquor is gradually reduced and the temperature of the mother liquor is lower than 50 DEG C, water spraying is stopped, internal cooling is adopted, that is, low-temperature magnesium chloride is input into the inner coil pipe, so that the cooling capacity consumption of the low-temperature magnesium chloride can be reduced.

Description

technical field [0001] The invention relates to the technical field of potassium nitrate production, in particular to a cooling process for potassium nitrate production. Background technique [0002] Cooling is required during the production of potassium nitrate, and a large amount of magnesium chloride solution is required for cooling. Using a large amount of magnesium chloride solution will not only waste costs, but also pollute the environment, cause occupational hazards, and cause physical harm to employees. . Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a cooling process for potassium nitrate production. [0004] To achieve the above object, the present invention provides the following technical solutions: [0005] A cooling process for the production of potassium nitrate, including a cooling tank. The cooling method of the cooling tank adopts internal cooling or external cooling. The internal cool...

AI Technical Summary

Problems solved by technology

[0002] Cooling is required during the production of potassium nitrate, and a large amount of magnesium chloride solution is required for cooling. Using a large amount of magnesium chloride solution will not only waste costs, but also pollute the environment, cause occupational hazards, and cause physical harm to employees.