Energy-saving ammonium chloride wastewater freeze-concentration crystallizing system and technology thereof
A freeze-concentration and crystallization system technology, applied in the direction of ammonium chloride, ammonium halide, chemical industry, etc., can solve the problems of rapid reproduction of algae and fish poisoning, accelerate the eutrophication process of water body, reduce the self-purification ability of water body, etc., and achieve reduction Reliance on boiler equipment, low power consumption, and large production capacity
Inactive Publication Date: 2019-12-13
SHENZHEN SUNEVAP TECH
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Problems solved by technology
The ammonium chloride wastewater solution is acidic. During the conventional heating and hair growth process, with the volatilization of ammonia nitrogen, the acidity increases, and it is highly corrosive to metals such as carbon steel and ordinary stainless steel. If the ammonium chloride wastewater is discharged directly, it will water pollution
Ammonia nitrogen is an important substance that causes water eutrophication and environmental pollution. If the concentration of ammonia nitrogen is too high, it will inhibit the natural nitrific
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[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0029] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude one or Presence or addition of multiple other features, integers, steps, operations, elements, components and / or collections thereof.
[0030] It should also be understood that the terminology used ...
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The invention relates to an energy-saving ammonium chloride wastewater freeze-concentration crystallizing system and a technology thereof. The system comprises a stock solution precooler, a freezing forced circulation heat exchanger, a freezing crystallization separator and a solid-liquid separation device which are connected in sequence, an ice crystal melting tank is connected between the freezing crystallization separator and the stock solution precooler, and the solid-liquid separation device is connected with the freezing forced circulation heat exchanger. The system is an energy-saving and emission-reducing apparatus, and has a high heat efficiency and a low power consumption; compared with an existing ammonium chloride evaporative crystallization technology, the technology of the invention has the advantages of low temperature and normal pressure conditions, no consumption of steam, reduction of the dependence on a boiler, reduction of pollutants, energy saving and environmentalfriendliness; and compared with conventional technologies, the technology provided by the invention has the advantages of realization of the continuous wastewater treatment effect, low energy consumption, freeness of steam consumption, few pollutants, greenness and environmental friendliness.
Description
technical field [0001] The invention relates to the technical field of ammonium chloride wastewater treatment, in particular to an energy-saving ammonium chloride wastewater freezing concentration crystallization system and a process thereof. Background technique [0002] Water will produce a large amount of ammonium chloride wastewater in the industrial production of chemical fertilizers, electroplating, circuit boards, rare earths, and hydrometallurgy. This type of ammonium chloride wastewater has a high concentration and is difficult to treat. Improper treatment will cause a high degree of harm to the environment. . The ammonium chloride wastewater solution is acidic. During the conventional heating and hair growth process, with the volatilization of ammonia nitrogen, the acidity increases, and it is highly corrosive to metals such as carbon steel and ordinary stainless steel. If the ammonium chloride wastewater is discharged directly, it will Water bodies are polluted t...
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Login to view more IPC IPC(8): C02F1/22C01C1/16
CPCC01C1/164C02F1/22Y02P20/10
Inventor 周齐
Owner SHENZHEN SUNEVAP TECH
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