Sea water desalting device based on supercavitation technology

A supercavitation technology, which is applied in seawater treatment, general water supply saving, heating water/sewage treatment, etc., can solve the problem of low energy density and achieve the effect of solving the residual non-degradable pollutants

Inactive Publication Date: 2014-12-10
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a seawater desalination device based on supercavitation technology to solve the problems of low energy density and source water needing pretreatment in the existing seawater desalination method

Method used

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  • Sea water desalting device based on supercavitation technology
  • Sea water desalting device based on supercavitation technology
  • Sea water desalting device based on supercavitation technology

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Experimental program
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specific Embodiment approach 2

[0012] Specific implementation mode two: as figure 2 and image 3 As shown, the number of blades of the rotary supercavitation evaporator 1 in this embodiment is two. Such a design can ensure the dynamic and static balance of the rotating blades, and at the same time, there is a large space between the blades to form a large-sized supercavitation. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0013] Specific implementation mode three: as figure 2 and image 3 As shown, the blade in this embodiment is a wedge-shaped blade, and the cross-section of the blade from the center to the edge is tapered from large to small. With such a design, the length of the cavitation can reach the maximum at different radii, so that the supercavitation with the largest size can be obtained to increase the water vapor production. Other compositions and connections are the same as those in Embodiment 1 or 2.

specific Embodiment approach 4

[0014] Embodiment 4: The cyclone separator described in this embodiment is a gas-liquid separator. In such a design, the water droplets entrained in the steam extraction process are separated and converged to the source water droplet collection tank 6, and the steam and non-condensable gas flow to the condenser 7 through the upper outlet of the cyclone separator 5. Other components and connections are the same as those in the third embodiment.

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Abstract

The invention discloses a sea water desalting device based on a supercavitation technology and relates to a sea water desalting device. The sea water desalting device disclosed by the invention aims at solving the problems that the existing sea water desalting method is low in energy density and source water needs to be pre-treated. The bottom end of a source water tank is communicated with the inlet of a rotary supercavitation evaporator by virtue of a pipeline, the rotary supercavitation evaporator is communicated with the source water tank by virtue of the pipeline, the pipeline between the rotary supercavitation evaporator and the source water tank is provided with a water pump, a blade shaft of the rotary supercavitation evaporator fixedly sleeves on a main output shaft of a motor and is provided with a steam exhaust channel axially, the root of each blade is provided with a steam suction opening which is communicated with the inner wall of the blade shaft, one end of the steam exhaust channel is communicated with the steam suction opening, the other end of the steam exhaust channel is communicated with the upper inlet of a cyclone separator by virtue of the pipeline, and the bottom outlet of the cyclone separator is communicated with the upper end of a source water drop collecting water tank by virtue of the pipeline. The device disclosed by the invention is used for desalting sea water.

Description

technical field [0001] The invention relates to a seawater desalination device, in particular to a seawater desalination device based on supercavitation technology. Background technique [0002] With the increase of global population and environmental damage, fresh water resources are facing a major crisis, and the scarcity of fresh water resources has become a global environmental problem. Most of the earth's water exists in the form of seawater, and the ocean can become an inexhaustible source of fresh water for human beings, and the way to achieve this is seawater desalination. [0003] At present, seawater desalination technologies mainly include thermal distillation and membrane method, while the industrial large-scale application is multi-stage flash evaporation and low-temperature multi-effect distillation in thermal distillation and reverse osmosis in membrane method. However, the thermal distillation method has the disadvantage of low energy density due to the easy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/04C02F103/08
CPCY02A20/124
Inventor 李凤臣郑智颖李倩德米特里·谢尔盖耶维奇·利哈乔夫
Owner HARBIN INST OF TECH
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