A brine crystallization drying device

Abstract

The invention discloses a brine crystallizing and drying device which comprises an evaporation tower, a drying furnace and a waste heat recovery kettle and is characterized in that heat is transferred through a heat pipe between the evaporation tower and the waste heat recovery tower; a brine distributor in the evaporation tower is arranged at the middle of the evaporation tower to form a superheated steam heat pipe and an evaporation heat pipe; a fluidization air pipe is arranged in the waste heat recovery tower; and a pressure ventilation pipe is arranged on the drying furnace. Compared with the prior art, the device disclosed by the invention has the following advantages: through the device, the heat energy of high-temperature flue gas can be efficiently utilized to evaporate, crystallize and dry the brine, and the heat energy is effectively recycled to generate superheated steam, so that the energy utilization efficiency is remarkably high; and meanwhile, through detailed setting, the blocking and flow dead angle are avoided in the whole production process, and high productivity is guaranteed while the yield is kept stable.

Description

technical field [0001] The invention relates to the field of evaporation and crystallization devices, in particular to a device for rapid crystallization and rapid deep drying of brine with high energy efficiency. Background technique [0002] The process of brine crystallization into salt requires the evaporation of a large amount of solvent. Commonly used crystallization operations generally require a large amount of high-grade heat energy to evaporate the solvent to achieve rapid evaporation and crystallization. A large amount of heat is lost in the process, and the energy utilization is not efficient. After the salt particles are precipitated, there are often pores in the salt particles, and the moisture in the pores is difficult to evaporate, so that the obtained product has a high water content. In order to improve the product grade, it is often necessary to add an additional baking procedure to deal with the residual moisture and heat energy. Consumption is huge. C...

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Problems solved by technology

A large amount of heat will be lost in the process, and the energy utilization efficiency is not high

After the salt particles are precipitated, there are often pores in the salt particles, and the moisture in the pores is difficult to evaporate, so that the obtained product has a high water content. In order to improve the product grade, it is often necessary to add an additional baking procedure to deal with the residual moisture and heat energy. Huge consumption

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