Novel photothermal salt sun-drying accelerating method and device

Abstract

The invention discloses a novel photothermal salt sun-drying accelerating method. The novel photothermal salt sun-drying accelerating method comprises the following steps of enabling a pumping deviceto inject the seawater into a salt tank; enabling one end of a hydrophilic material to extend into the seawater of the salt tank, and be in full contact with the seawater; enabling the other end of the hydrophilic material to be in full contact with an optical absorbing material, and exposing the optical absorbing material under the sun; injecting a heat insulation material between the optical absorbing material and the seawater; adjusting the contact area between the hydrophilic material and the seawater, and the hydrophility or width or thickness of a hydrophilic device, so as to control thewater absorbing rate of the hydrophilic material; drying the salt crystal at the bottom part of the salt tank under the sun. The invention also discloses a novel photothermal salt sun-drying accelerating device. The novel photothermal salt sun-drying accelerating method has the advantages that the salt-making seawater can be quickly evaporated, the salt sun-drying cycle is greatly shortened, andthe production efficiency of the salt sun-drying process is obviously improved.

Description

technical field [0001] The invention relates to the field of seawater evaporation salt drying, in particular to a novel photothermal accelerated salt drying method and device. Background technique [0002] Salt is mainly divided into sea salt, lake salt and well salt, which are the necessities of people's life. The methods of making salt include boiling salt, solar evaporation (solar salt), freezing method, vacuum evaporation and hot-press evaporation. Among them, boiling salt is not only inefficient but also consumes a lot of energy; although electrodialysis, vacuum evaporation and hot-press evaporation salt production have improved efficiency, they still consume a lot of energy; freezing method is only suitable for salt production in specific regions and seasons; It is an ancient and traditional method of salt production. Since sun-dried salt uses solar energy and wind energy to evaporate water and concentrate brine, it does not require a lot of energy. It is the most econ...

AI Technical Summary

Problems solved by technology

At present, although the sun-dried salt has adopted the method of condensing the evaporation pool, the intermediate adjustment pool, and the crystallization pool step by step to improve the production efficiency, this method of salt production still requires the natural evaporation of the water surface of the ponds at all levels to gradually concentrate the brine.

Due to the low pool water surface, small effective evaporation area, low solar energy utilization rate, slow water evaporation, long salt production cycle, low production efficiency and production benefits, it seriously restricts the development of sun-dried salt enterprises

Moreover, some existing sun-dried salt methods are prone to salt precipitation problems on the sun-dried salt materials, which reduces the output of salt. Therefore, exploring a sun-dried salt method that makes full use of solar energy in terms of time and space, etc., is beneficial to the improvement of sea salt and lake salt. It is very necessary to improve the economic efficiency of sun-dried salt enterprises and salt people

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