Spherical potassium perchlorate production technology

Abstract

The invention relates to a spherical potassium perchlorate production technology. The technology comprises the steps that naturally crystallized potassium perchlorate is adopted, by means of recrystallization technology preparation, the raw material potassium perchlorate is added into a refining tank, potassium perchlorate saturated liquid is added, a potassium perchlorate refined solution is obtained, the refined solution is continuously mixed with the circulation potassium perchlorate saturated liquid through a rotor flow meter, the mixture enters a multitubular heat exchanger after mixing is conducted, by means of dividing wall heat exchanging, heat brought by the refined solution is exchanged, the degree of supersaturation is formed, the grain size of precipitated potassium perchlorate reaches over 200 microns, the precipitated potassium perchlorate is sent into a centrifuge to complete solid-liquid separation, the solid is sent into a fluidized bed dryer to conduct drying, and a finished product is obtained. According to the spherical potassium perchlorate production technology, an existing ordinary crystallization device is utilized to conduct production, special equipment does not need to be designed, a large amount of cost is reduced, the technology is manure and practical, the spherical degree is high, the average grain size is far larger than 200 microns, the yield is large, and requirements of a modern market are met.

Description

technical field [0001] The invention belongs to the field of fine chemical industry, in particular to a production process of spherical potassium perchlorate. Background technique [0002] At present, two types of potassium perchlorate are mainly produced in China, which are defined as type I and type II in the current industrial potassium perchlorate standard. The chemical index of type I is relatively stricter than that of type II. That is, 420 micron, 180 micron, 150 micron, 75 micron standard sieve, Type II only uses 150 micron standard sieve to test, the test result only has the requirement of pass rate, not the requirement of average particle size. It can be deduced from the index value of the passing rate that the average particle size of these two types of potassium perchlorate is between 40-70 microns, and the appearance is white crystalline powder. Potassium perchlorate of these two specifications is mainly produced by the double decomposition cooling process of s...

AI Technical Summary

Problems solved by technology

However, the double decomposition method is difficult to produce granular high potassium with an average particle size greater than 100 microns and a particle size distribution, and due to the limitation of the pelletizing process technology of potassium perchlorate, the spheroidization of the product is poor, and there are many technical problems in the production of granular potassium perchlorate

Therefore, the potassium perchlorate currently on the market is generally pure in its small particle size, low output and high price.

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