Evaporation and concentration method for corrosive liquid material

A liquid material, evaporation and concentration technology, applied in evaporation, separation methods, chemical instruments and methods, etc., can solve the problems of solute loss, increase operating cost, waste energy, etc., reduce condensation temperature, improve heating performance coefficient, save energy energy effect

Inactive Publication Date: 2012-05-02
JIANGSU LEKE THERMAL ENG EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This will cause two consequences: 1) The temperature of the secondary steam is high, direct discharge will increase the operating cost and waste energy; 2) A small amount of liquid droplets will be entrained in the secondary steam, which will cause the loss of solute, will also pollute the environment

Method used

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  • Evaporation and concentration method for corrosive liquid material
  • Evaporation and concentration method for corrosive liquid material

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Embodiment Construction

[0011] The present invention is mainly composed of a falling film evaporator 4, a compressor 2, a secondary vapor condenser 1 and a water pump 5. The inlet pipe 6 of the corrosive liquid material is connected to an inlet port 7 of the falling film evaporator 4, and the falling film evaporator 4 connected to the inlet port 7 is connected to the high temperature water vapor outlet port 8, and the falling film evaporator 4 is also provided with The concentrated liquid material outlet port 9, the falling film evaporator 4 is also provided with a heat exchange medium inlet port 10 and an outlet port 11. The secondary steam condenser 1 is provided with a heat exchange medium inlet port 12 and an outlet port 13, and the heat exchange medium outlet port 11 of the falling film evaporator 4 is connected to the heat exchange medium inlet port 12 of the secondary steam condenser 1 through a throttle valve 3 . The heat exchange medium outlet port 13 of the secondary vapor condenser 1 is c...

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Abstract

The invention discloses an evaporation and concentration method for a corrosive liquid material, which relates to an industrial concentration and production process. After exchanging heat with a high-temperature heat transferring medium, the corrosive liquid material is evaporated to remove high-temperature steam, and then the concentrated liquid material is obtained; and after exchanging heat with a low-temperature heat transferring medium, the high-temperature steam forms condensed water which is then drained through a water pump. The corrosive liquid material can be evaporated under a working condition withof lower temperature by the method, so on the one hand, the condensation temperature of the steam of a freezing medium can be reduced and a coefficient of heating performance is improved, and on the other hand, the corrosive material is not decomposed. When the method is compared with the prior art, energy resource can be greatly saved, and chlorate corrosive materials, such as sodium hypochlorite, potassium perchlorate, sodium chlorate, potassium chlorate, magnesium chlorate and the like can be concentrated by the method.

Description

Technical field: [0001] The invention relates to an industrial concentration production process, in particular to the technical field of an evaporation concentration process suitable for corrosive liquid materials such as chlorate. Background technique: [0002] Chlorates, such as sodium hypochlorite and potassium perchlorate, are corrosive liquid materials and one of the commonly used chemical raw materials. Sodium hypochlorite is widely used in the disinfection of various water bodies including tap water, reclaimed water, industrial circulating water, swimming pool water, hospital sewage, etc. . Sodium hypochlorite can also destroy cyanide ions and benzene rings, etc. It is used for advanced oxidation of cyanide-containing wastewater and some industrial heavily polluted wastewater. It can also be used for pulp bleaching. High-concentration sodium hypochlorite liquid can also be used for stripping equipment and pipelines Attached mud. [0003] Sodium hypochlorite is a str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D1/22C01B11/06C01B11/14C01B11/18
Inventor 韩东彭涛夏君君
Owner JIANGSU LEKE THERMAL ENG EQUIP
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