Sodium persulfate production process

Abstract

The invention discloses a sodium persulfate production process. The sodium persulfate production process comprises the following steps: adding ammonium persulfate into a feeding kettle, adding water for dissolving, performing filtration, feeding the filtered product into a reaction and deamination kettle, adding liquid alkali, and performing a reaction at a negative pressure to obtain a sodium persulfate solution and ammonia gas A; performing vacuum evaporation and crystallization on the sodium persulfate solution to obtain a liquor, putting the liquor into an intermediate tank, regulating thepH value of the system, performing centrifugal separation to obtain a wet material and a mother solution, and drying the wet material to obtain sodium persulfate; enabling the mother solution to flowinto a mother solution collecting tank, feeding the collected mother solution into a refrigeration kettle, performing refrigeration and crystallization to obtain crystal slurry, performing centrifugal separation on the crystal slurry to obtain a byproduct mirabilite and a centrifugated mother solution, enabling the centrifugated mother solution to flow into an underground tank, performing filtration, feeding the filtered mother solution into a mother solution overhead tank, returning the mother solution into the reaction and deamination kettle, and performing recrystallization; enabling the ammonia gas A generated in the reaction and deamination kettle to enter an anode material ammonia absorption tower, and performing absorption to obtain an absorption solution A and ammonia gas B; and enabling the ammonia gas B to enter a cathode material ammonia absorption tower, and performing absorption to obtain an absorption solution B. The sodium persulfate production process provided by the invention is high in productivity and low in production cost.

Description

technical field [0001] The invention relates to the technical field of sodium persulfate, in particular to a production process of sodium persulfate. Background technique [0002] Sodium persulfate is a strong oxidizing agent, widely used in electronics industry, petrochemical industry, textile industry, paper industry, environmental protection industry and other fields due to its continuous and stable oxidation performance. [0003] The existing sodium persulfate production process has the following deficiencies: 1, the main process route is too long, the number of required equipment is large, the equipment layout takes up more space, and the unit consumption of product raw materials is large; 2, because ammonium persulfate often Press down the reaction, causing a large amount of ammonia to overflow; 3. Add alkali directly in the feeding kettle at one time, resulting in incomplete reaction; 4. Only the first-level anode material is absorbed, resulting in incomplete absorpti...

AI Technical Summary

Problems solved by technology

[0003] The existing sodium persulfate production process has the following deficiencies: 1, the main process route is too long, the number of required equipment is large, the equipment layout takes up more space, and the unit consumption of product raw materials is large; 2, because ammonium persulfate often Press down the reaction, causing a large amount of ammonia to overflow; 3. Add alkali directly in the feeding kettle at one time, resulting in incomplete reaction; 4. Only the first-level anode material is absorbed, resulting in incomplete absorption of ammonia gas, and the ammonia gas on site is bad; 5. , Using a three-legged manual unloading centrifuge, the labor intensity is high and the labor cost is high; 6. The output is low and the production cost is high

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