Vaporization system based on air heat insulation and humidification process

Abstract

The invention discloses a vaporization system based on an air heat insulation and humidification process. The process comprises the following steps: enabling hot air to directly contact a solution to transfer heat and mass, transferring the apparent air heat to the solution, enabling the water to be vaporized after absorbing the heat, latent heat is returned into the air in a water vapor form, i.e., the air is humidified in an isenthalpic process, so that a vaporization effect can be achieved. By controlling the temperature of the hot air entering a vaporization chamber, a vaporization temperature of the solution and the outlet temperature of the humidified air can be controlled, and the system is simple in control; and by continuously adding materials and discharging concentrated solutions, the continuous vaporization operation is realized.

Description

technical field [0001] The invention relates to an evaporation system based on the air adiabatic humidification process. The evaporation chamber is used to form an adiabatic condition, so that the air and water are directly contacted for heat and mass transfer, and the evaporation operation is realized. It can be widely used in industries such as petrochemical, metallurgy, and biopharmaceuticals. production process. Background technique [0002] With the development of industry and economy, the unit operation of evaporation has been more and more used in the industrial production process. Such as evaporation and concentration of caustic soda solution, crystallization to obtain solid NaOH; drying of urea solution after evaporation and concentration to obtain urea granules; evaporation and concentration of medicinal percolation liquid and solvent recovery, and seawater desalination through evaporation, etc. [0003] Multi-effect evaporation technology and mechanical vapor rec...

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Problems solved by technology

[0003] Multi-effect evaporation technology and mechanical vapor recompression technology are two mainstream energy-saving evaporation technologies at present. The multi-effect evaporation technology uses the secondary steam generated by the front effect evaporation as the heat source of the after effect evaporator. There are problems such as large equipment footprint, gradual reduction of evaporation pressure, and high investment costs; mechanical vapor recompression technology recompresses the generated secondary steam to improve its thermal quality, and enters the evaporator as a heat source again, which can solve multi-effect evaporation The problem of waste of secondary steam at the end effect, but the safety and reliability requirements of its core equipment steam compressor are relatively high

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