Solar seawater desalination method and device

A technology of solar energy and seawater, applied in chemical instruments and methods, seawater treatment, general water supply conservation, etc., to achieve the effect of saving electric energy

Inactive Publication Date: 2015-07-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the utilization methods of the above technologies are different, they all adopt the multi-level utilization technology of solar energy to maximize the utilization of solar energy.

Method used

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  • Solar seawater desalination method and device
  • Solar seawater desalination method and device
  • Solar seawater desalination method and device

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] like figure 1 Shown, the present invention comprises wind power pumping parts, reservoir 4, heat exchange pipe 6, steam condensation pipe 18, the first steam-water separation chamber 8, the second steam-water separation chamber 31, the first solar heat collector 7, the second The solar heat collector 30 and the hydraulic drive vacuum pump part; the seawater 21 in the wind pumping part is connected from the upper part of the reservoir 4, the reservoir 4 is equipped with a heat exchange tube 6 and a steam condensation tube 18, and one end of the heat exchange tube 6 is connected to The bottom of the second steam-water separation chamber 31, the other end of the heat exchange pipe 6 is connected to the concentrated seawater outlet 20, and one end of the steam condensation pipe 18 is divided into two paths after passing through the steam collecting p...

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Abstract

The invention discloses a solar seawater desalination method and device. A wind-driven machine sucks seawater into an impounding reservoir; seawater evaporated by two stages of solar heat collectors is sucked into a condenser through a vacuum pump; concentrated seawater which is not vaporized enters a heat exchange pipe in the impounding reservoir by utilizing natural gravity, transfers heat to fresh seawater and then flows into a hydraulic-driven machine to drive the vacuum suction pump to pump out steam in two stages of steam-water separation chambers, so as to make the steam-water separation chambers be in a negative pressure state, and increase the water steam evaporation speed. The device comprises wind water-pumping components, the impounding reservoir, the heat exchange pipe, a steam condensing pipe, the two steam-water separation chambers, the two solar heat collectors and hydraulic-driven vacuum pump components. The wind-driven machine is directly connected with a water pump, a wind impeller rotates to suck seawater, and a way of firstly converting into electric energy and then driving the water pump by a motor is not adopted, so that the efficiency can be improved by more than 50%; and the impeller is driven to rotate by utilizing water power, the rotating force is transferred to a vacuum pump driving shaft, and then the vacuum pump is driven to run to vacuumize, so as to greatly save the electric energy.

Description

technical field [0001] The invention relates to a seawater desalination method and device, in particular to a solar seawater desalination method and device. Background technique [0002] There are many methods of seawater desalination. According to the formation principle of fresh water, they can be divided into the following three categories: one is the reverse osmosis method that uses membranes to perform reverse osmosis to obtain fresh water, and the other is the distillation that uses heating, evaporation and cooling to obtain fresh water. Another category is electrodialysis, among which reverse osmosis and multistage distillation are currently the leading methods for seawater desalination. Seawater desalination requires energy consumption. At present, solar energy, wind energy, tidal energy, etc. are used as energy sources for seawater desalination, especially solar desalination. Solar energy can participate in seawater desalination in many forms, such as heating and e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/14C02F103/08
CPCY02A20/124Y02A20/141Y02A20/142Y02A20/212
Inventor 郑传祥魏双
Owner ZHEJIANG UNIV
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