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Method for making ice and salt and desalinating sea water with natural resources

A technology of natural resources and seawater, applied in seawater treatment, alkali metal chloride, general water supply conservation, etc., to achieve the effect of eliminating heavy physical labor

Active Publication Date: 2011-09-07
南通市崇川科技创业服务中心有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a large-scale industrialization of desalination of seawater and salt production by using beaches, tidal energy and natural cold to make ice and desalinate without occupying land resources and consuming electricity. Production method and corresponding simple facilities

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  • Method for making ice and salt and desalinating sea water with natural resources

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Embodiment Construction

[0040] On the coast with cold winter, there are different degrees of icing every year. The ice edge line is parallel to the coastline; for example, the northern part of the Bohai Sea and the Yellow Sea in China, the perennial glacial period is about 3 to 4 months, and the fixed ice width is 0.2 to 2 kilometers during the maximum glacial period; ice thickness: 20 to 40 cm in the north, 10 to 30 cm in the south cm, and has little effect on navigation. There is a saying in the agricultural proverb that "the tide rises on the fifteenth day of the lunar new year, and the beach can be seen everywhere on the twenty-third day of the eighth day". The present invention utilizes the above-mentioned natural phenomena to desalinate seawater by accumulating tides and freezing, and utilizes the seawater with high salt content remaining after freezing to rapidly brine into salt.

[0041] Specific facilities: On the sloped beach, set up freezing pool 2, brine drying pool 1 and crystallization...

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Abstract

The invention relates to a method for making ice and salt and desalinating sea water with natural resources. The method is characterized in that a freezing pond, a solarization pond and a crystallization pond are built in sequence on a sloping beach; buoyancy gates arranged on a dam; in case of rising tide, the gates float up automatically so that sea water rushes into the freezing pond and the solarization pond; when the water level rises continuously, the gate on one side falls down automatically so that the sea water is entrapped in the freezing pond; after the sea water flows out of the solarization pond, the gates fall down to close the solarization pond; when the air temperature is below 0 DEG C, the sea water in the freezing pond is frozen; when the air temperature is higher than 0 DEG C, a drainage passage is opened so that the non-frozen sea water flows into the solarization pond; ice is frozen and thawed repeatedly due to the change of the air temperature, brine in the ice is discharged into the solarization pond, and finally the ice is thawed into fresh water; the sea water in the solarization pond is evaporated under the actions of the sun and the wind; and when the salinity reaches 20 degrees, the sea water flows into the crystallization pond to be used as material to make salt. The method can substantially utilize the natural energy resources to achieve the purposes of opening the gates to introduce sea water, draining, making ice, desalinating sea water and making salt.

Description

technical field [0001] The invention relates to the fields of seawater desalination and salt production, in particular to a production method for desalination of seawater and salt production using natural energy. Background technique [0002] Seawater desalination has always been a subject of concern. At present, the indirect desalination method of seawater desalination (mainly the method of producing fresh water from sea ice) is particularly concerned by people. Among them, the method of using natural energy to make sea ice and sea ice to make fresh water is most in line with the requirements of environmental protection and is most worthy of promotion. But do not utilize above-mentioned method to carry out large-scale factory production so far. [0003] Patent CN1686839A (method of using natural cold source to make ice to desalinate brackish water), its main feature is to fill natural or artificial ponds with seawater or brackish water taken from the ground, freeze natura...

Claims

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Application Information

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IPC IPC(8): C02F1/22B01D9/02C01D3/06C02F103/08
CPCY02A20/124
Inventor 杜文娟
Owner 南通市崇川科技创业服务中心有限公司
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