Deaminizing and dewatering technology and special device for sodium persulfate (salt) synthetic fluid

Abstract

The invention belongs to the technical field of sodium persulfate (salt) preparation, and particularly discloses a deaminizing and dewatering technology and a special device for sodium persulfate (salt) synthetic fluid. According to main technical schemes, air heated to 80-200 DEG C by an air heater passes through an air distributor arranged in a reaction still, then heat is uniformly and quickly transferred to reaction liquid, so that ammonia and moisture in the reaction liquid are quickly evaporated, separated ammonia gas enters an ammonia recovery tower through a gas pipeline, is circularly absorbed by mother liquid containing dilute sulphuric acid to become ammonium sulfate mother liquid and then the ammonium sulfate mother liquid enters a sodium persulfate electrolysis system. The special device has the characteristics of simple structure and convenience for operation; side reactions can be reduced through deaminizing and dewatering by utilizing the device, so that the high temperature decomposition possibility of a sodium persulfate target product is greatly reduced, the yield of sodium persulfate is increased, and the economic benefit is increased.

Description

technical field [0001] The invention belongs to the technical field of sodium persulfate (salt) preparation, and in particular relates to a deammonization and dehydration process and a special device for a sodium persulfate (salt) synthetic liquid. Background technique [0002] Taking ammonium persulfate and sodium hydroxide as the main raw materials to directly synthesize sodium persulfate is an effective method recognized worldwide at present, but when generating the target product sodium persulfate, no matter it is an alkaline environment or an acidic environment, it is also A large amount of ammonia gas or / and ammonium ions will be produced, which will lead to the generation of sodium sulfate which is of no value in the reaction system (the side reaction is more severe in an alkaline environment). In view of this, it is one of the key issues to be solved in the synthesis process of sodium persulfate that ammonia is separated and recovered from the reaction solution in...

AI Technical Summary

Problems solved by technology

Another disadvantage of steam jacket heating is that with the deamination and dehydration of the synthetic liquid, the liquid level in the kettle gradually decreases, and the jacket is exposed to the liquid surface, causing serious scarring due to the splash of the solution

In addition, the cost of steam is high. From desalination and deoxidation of water treatment to heating with coal to turn it into steam, the cost of steam is more than 200 yuan per ton. Steam is also easily discharged with condensed water, resulting in higher operating costs.

Steam jacket heating often causes spray cans due to failure of the vacuum system, which not only wastes a lot of materials, but is also very dangerous

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