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Method and facilities for large scale preparing fresh water by seawater icing

A large-scale, seawater technology, applied in seawater treatment, frozen water/sewage treatment, etc., can solve problems such as not seeing fresh water

Inactive Publication Date: 2007-03-07
薛廷芳 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The so-called freeze-freezing method (whether natural or artificial) refers to the process of freezing seawater below the freezing point, freezing fresh water, separating, and melting again into fresh water. The "Desalination Project" edited by Wang Shichang of Tianjin University was published in February 2003 by Chemical Industry Publishing House) mentions that "the freezing method has two kinds of natural ice method and artificial freezing method, but both of them are still under research", and there is no mature method of using seawater to produce fresh water on a large scale. technical reports

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  • Method and facilities for large scale preparing fresh water by seawater icing
  • Method and facilities for large scale preparing fresh water by seawater icing
  • Method and facilities for large scale preparing fresh water by seawater icing

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specific example

[0037] The following is a specific example of the method of harvesting sea ice to produce fresh water: in this method, the sea ice harvesting project includes segmentation, fishing, transportation to destination storage and preservation. In order to facilitate the operation of subsequent processes, the shape of sea ice segmentation cannot be arbitrarily extensive, but there are certain requirements. The length and width of the area should be consistent, and the weight of ice blocks should be limited. There are several methods of sea ice segmentation:

[0038] ①. Cutting method: It can be cut by water jet, circular saw, band saw and other machines. The depth of the kerf may vary with different cutting machines. When the depth of the crevasse is smaller than the thickness of the ice layer, a small "icebreaker" or other equipment should be used to crush the crevice before the crevasse is re-frozen to split the ice.

[0039] ②. Shaped blasting method: Drill holes on the sea ice ...

specific Embodiment

[0042] The following is a specific embodiment of the seawater inland ice-making freshwater method: the seawater inland ice-making method includes seawater transfer and transportation land project, land storage seawater project, ice and seawater separation project, ice storage project, further concentration and storage of concentrated brine seawater Salting out chemical treatment, etc. To transfer seawater to land, large-scale and cheap transportation can be carried out through water pipelines, open channels or artificial canals as long as the freezing period of severe cold is avoided. Seawater freezing and ice-making locations can be set in inland deserts away from the seashore, Gobi, arid wilderness or barren land, where large shallow pools, reservoirs, lakes or small seas, or pond systems for storing seawater can be built. These places must have a sufficiently cold temperature and a long cold time to freeze seawater, so that freshwater ice layers with a thickness of 0.5-0.6m...

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Abstract

The invention discloses a preparing method and equipment of fresh water through large-scale icy sea water, which is characterized by the following: collecting sea ice directly in winter; preparing mutual cascading structure of high and low level pools; making the depth of high-level pool more than the depth of low level pool to enlarge the area of low level pool by 2 times.

Description

technical field [0001] The seawater desalination and utilization technology of the present invention, especially the method and facility (equipment) for large-scale production of fresh water by freezing seawater, relates to the harvesting or production method of sea ice desalinated water. Background technique [0002] Fresh water is the most precious resource in human existence. It is related to the national economy and the people's livelihood. However, the per capita fresh water resources in my country are only a quarter of the world's, and the temporal and spatial distribution of precipitation is seriously uneven, which makes the water shortage situation in the northern and northwestern regions of my country extremely serious. . Even many big cities have experienced water shortages. According to statistics, more than 400 of the country's 610 medium-sized and above cities are short of water to varying degrees. The water shortage in many areas has already affected the susta...

Claims

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Application Information

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IPC IPC(8): C02F1/22C02F103/08
Inventor 薛廷芳郑祖斌
Owner 薛廷芳
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