Photo-thermal plate for accelerating salt manufacture by means of brine evaporation and method for applying photo-thermal plate

Abstract

The invention discloses a photo-thermal plate for accelerating salt manufacture by means of brine evaporation and a method for applying the photo-thermal plate. The photo-thermal plate comprises a first hydrosol layer, a heat-insulation layer, a buoyancy material and a salt pond. A first hydrophobic layer is arranged on the upper side of the first hydrosol layer, and a black light absorption material is arranged on the lower side of the first hydrosol layer; a second hydrophobic layer is arranged on the upper side of the heat-insulation layer and is adhered with the black light absorption material via a second hydrosol layer, and a water absorption sheet is arranged on the lower side of the heat-insulation layer; a plurality of groups of through holes are uniformly formed in the surfaces of the buoyancy material, and a photo-thermal plate body floats on the salt pond. The photo-thermal plate for accelerating salt manufacture by means of brine evaporation and the method have the advantages that the second hydrophobic layer can prevent brine from being permeated into materials, salt which is dissolved out by means of brine evaporation is difficult to adhered to the surfaces of the materials, and accordingly salt-resistant effects of the materials can be realized; absorbers can be separated from water bodies by the aid of the hydrophobic properties of the materials, only the surface brine is heated, the brine can be quickly evaporated, the salt manufacture periods can be shortened to a great extent, and accordingly the salt manufacture quantities can be increased.

Description

Technical field [0001] The invention relates to the technical field of photothermal material technology, in particular to a photothermal plate for accelerating salt drying in seawater and a method of use. Background technique [0002] There are rich types of salt, including sea salt, pond salt, well salt, rock salt, etc. Sea salt has the longest development history in China. As early as 5,000 years ago, during the Xia Yu period, there was a record of "boil the sea as salt"; China began production more than 4,000 years ago Chi salt: At the end of the Warring States period more than 2000 years ago, Li Bing, the prefect of Qinshu County, had already dug salt wells in the Chengdu Plain to absorb brine and fry salt; the development of modern rock salt has made great progress, and large reserves have been proven in Hebei, Shanxi, Jiangsu and other places. In the rock salt deposits, the methods of salt production include boiling salt, solar evaporation (solar salt), freezing, vacuum eva...

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Problems solved by technology

[0003] The technical problem solved by the present invention is to overcome the traditional salt production method in the prior art because the pool water surface is low, the effective evaporation area is small, the solar energy utilization rate is low, the water evaporation is slow, the salt production cycle is long, the production efficiency and production benefit are low, Seriously restricting the development of salt drying enterprises and other defects, providing a photothermal plate and its use method for accelerating sea salt drying

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