Spraying type solution evaporation and concentration method

A technology of evaporation concentration and solution concentration, which is applied in the direction of spray evaporation, etc., can solve the problems of complex structure of forced circulation evaporator, large investment of evaporation device system, high material requirements, etc., and achieve excellent anti-fouling performance, high vapor-liquid separation efficiency, The effect of high heat transfer efficiency

Inactive Publication Date: 2011-07-13
CHENGDU HUARONG CHEM CO LTD
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Problems solved by technology

In addition, due to the complex structure of the falling film or rising film evaporator and the forced circulation evaporator, the material re

Method used

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  • Spraying type solution evaporation and concentration method
  • Spraying type solution evaporation and concentration method
  • Spraying type solution evaporation and concentration method

Examples

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Embodiment 1

[0065] The following is attached figure 1 , figure 2 , image 3 , taking an annual output of 30kt / a mass fraction 48% potassium hydroxide concentration device, (mass fraction 30% potassium hydroxide solution is evaporated and concentrated to a mass fraction of 48%) using a single-effect jet injection solution evaporation concentration method and device as an example, the details Explain the application of the solution spray evaporation concentration method and device, so as to have a better understanding of the solution spray evaporation concentration method and the combined device.

[0066] An annual output of 30kt / a mass fraction 48% (the following description omits "mass fraction") potassium hydroxide single-effect spray injection solution evaporation concentration production device (see image 3 ).

[0067] Use a 48% potassium hydroxide concentration device with an annual output of 30kt / a to evaporate and concentrate 30% potassium hydroxide to 48%, and use a single-eff...

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Abstract

The invention discloses a spraying type solution evaporation and concentration method, belonging to the technical field of solution evaporation and concentration. The solution evaporation and concentration method in the invention comprises the steps of: (1) heating a solution to be concentrated in a heat exchanger to a temperature higher than a boiling temperature; (2) fast evaporating to obtain the solution concentration as required through atomizing dispersion type flash evaporation by a spraying type solution concentration evaporator; (3) carrying out gravity vapor-liquid separation and solution foam capture on the generated secondary vapor, and then carrying out condensation separation by using a surface condenser; (4) removing noncondensable gas by using a vacuum pump; and (5) discharging a finished product from a discharge port on the lower part of the spraying type solution concentration evaporator, and leading the finished product to enter a finished production storage tank. The spraying type solution evaporation and concentration method disclosed by the invention is suitable for evaporating and concentrating various solutions, particularly for evaporating and concentrating materials, such as caustic soda and other various alkali solutions, which have large concentration ratio and large property variation along with the concentration variation.

Description

technical field [0001] The invention discloses a method for solution evaporation and concentration, which belongs to the technical field of solution evaporation concentration. Specifically, the invention relates to a spray type solution flash evaporation concentration method. The spray-type solution evaporation and concentration method of the present invention is suitable for various solution evaporation and concentration, especially for the concentration and evaporation of substances with large concentration ratio and material characteristics that vary greatly with concentration. Background technique [0002] Solution evaporation and concentration often use falling film or rising film evaporation, as well as forced circulation evaporation to evaporate water and concentrate the solution. The falling film or rising film evaporation method has the characteristics of small circulation, low steam consumption, and low power consumption. However, as the concentration of water evap...

Claims

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Application Information

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IPC IPC(8): B01D1/16
Inventor 王光华
Owner CHENGDU HUARONG CHEM CO LTD
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