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Method and device for desalinizing seawater and brackish water by using complete natural energy in manner of mechanical vapor compression distillation

A brackish water desalination and steam pressure distillation technology, applied in chemical instruments and methods, seawater treatment, water/sewage treatment, etc., can solve the problem of large energy consumption of seawater and brackish water, and achieve low cost and energy conversion rate. High, use energy saving effect

Inactive Publication Date: 2012-01-11
张文知
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention mainly solves the problems of high energy consumption of seawater and brackish water, uses solar energy as a start-up heat source, uses wind-powered air compressors, and uses compressed air to drive pneumatic pumps and pneumatic vacuum pumps, has good energy storage effect, low cost, energy saving, low cost

Method used

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Embodiment Construction

[0023] For better understanding and implementation, the specific implementation methods are given below in conjunction with the accompanying drawings, and the mechanical pressure steam distillation all-natural energy seawater and brackish water desalination method and its device of the present invention are described in detail.

[0024] (1) Start-up preparation: start the pneumatic pump 14 to make the raw seawater (brackish water) enter the head tank through the pipeline 24; open the valves F1 and F11 to make the raw water pass through the pipeline 16, the heat exchangers 9 and 10, and the pipeline 18 to enter When the evaporator 7 reaches the set liquid level, close the valves F1 and F11; the solar collector 5 uses a mixture of water and isopropanol at a constant boiling point as a heat transfer medium, and preheats the raw water in the evaporator 7 to 70°C-80°C; open the valves F13, F14, F2, start the pneumatic vacuum pump 2, pump out the non-condensable gas in the evaporator...

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Abstract

The invention relates to a method and device for desalinizing seawater and brackish water by using complete natural energy in the manner of mechanical vapor compression distillation, which are characterized in that the green energy sources of wind energy and solar energy are utilized. The device mainly comprises a wind air compressor, a pneumatic vacuum pump, a pneumatic pump, a pneumatic compressor, an evaporator, a heat exchanger, a solar heat collector, various pipelines and storage tanks and the like. The solar energy is used as a starting heat source, the wind air compressor is utilized, and the pneumatic pump and the pneumatic vacuum pump are driven by using the compressed air, therefore, the energy storage effect is favorable, the cost is low, the used energy saving is less and low in cost. The vapor compression distillation can be carried at lower temperature, the energy conversion ratio is high, the solar heat collector which is used for providing the starting heat source and the wind air compressor which is used for providing power are skillfully combined, therefore, the method and device for desalinizing the seawater and the brackish water provided by the invention have the most reasonable and efficient mode and provide domestic water and industrial water for islands and remote areas.

Description

technical field [0001] The invention relates to the field of seawater and brackish water desalination, in particular to a method and a device for introducing seawater and brackish water desalination by using natural energy and adopting a mechanical steam distillation method. Background technique [0002] At present, energy saving and emission reduction are valued all over the world, and desalination of seawater and brackish water requires a lot of energy. This is not only unfavorable for energy saving and emission reduction, but also greatly increases the cost of desalinated water, especially in islands and remote areas that lack electricity, energy-saving desalination methods and devices thereof are more urgently needed. The method and device for desalination of seawater and brackish water by adopting solar thermal collectors as starting heat, using wind-driven air compressors to drive pneumatic pumps, pneumatic vacuum pumps, and energy-saving mechanical steam distillation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/14C02F1/04C02F103/08
CPCY02A20/124Y02A20/141Y02A20/142Y02A20/212
Inventor 张文知
Owner 张文知
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