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Solar seawater desalination device and seawater desalination method thereof

A solar water heater and solar energy technology, applied in chemical instruments and methods, seawater treatment, water/sewage treatment, etc., can solve problems such as low efficiency of solar seawater desalination, and achieve the requirements of less auxiliary facilities, fast evaporation, and high desalination efficiency. Effect

Active Publication Date: 2012-11-21
HUAWEI TEHCHNOLOGIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: to overcome the defects of low efficiency of existing solar seawater desalination, and provide a solar seawater desalination device with high seawater desalination efficiency and adjustable size

Method used

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  • Solar seawater desalination device and seawater desalination method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: The sea water entering the solar water heater 2 and the sea water in the evaporator 3 are adjusted by the siphon principle. The temperature of the seawater after being heated by the solar water heater 2 is above 90°C. The vacuum spray tube 11 is a water-flow vacuum spray tube, and the vacuum spray tube 11 may have a heat preservation water coil. The solar water heater 2 is composed of one unit, and the evaporator 3 is composed of one unit. The negative pressure formed in the vacuum jet pipe 11 is 0.8 atm, and the power of the jet pump is 25W.

Embodiment 2

[0025] Embodiment 2: The sea water entering the solar water heater 2 and the sea water in the evaporator 3 are adjusted by the siphon principle. The temperature of the seawater after being heated by the solar water heater 2 is above 95°C. The vacuum spray tube 11 is a water-flow vacuum spray tube, and the vacuum spray tube 11 has a thermal insulation steam coil. An additional condenser may be connected between the spray outlet 13 of the vacuum spray tube 11 and the spray circulating water tank 15 to quickly condense the sprayed water vapor mixture. The condenser 6 has a condensed water coil. The negative pressure formed in the vacuum jet pipe 11 is 0.5 atm, and the power of the jet pump 17 is 100W.

Embodiment 3

[0026] Embodiment 3: The sea water entering the solar water heater 2 and the sea water in the evaporator 3 are adjusted by the siphon principle. The temperature of the seawater after being heated by the solar water heater 2 is above 95°C. The vacuum spray tube 11 is a steam vacuum spray tube. The condenser 6 is not connected to the device. An additional condenser may be connected between the spray outlet 13 of the vacuum spray pipe 11 and the spray circulating water tank 15 to quickly condense the sprayed water vapor mixture. The solar water heater 2 is composed of multiple units, and the evaporator 3 is composed of a single unit. The negative pressure formed in the vacuum jet pipe 11 is 0.2 atm, and the power of the jet pump 17 is 1 kW.

[0027] As shown in the figure, in the above embodiments 1-3, seawater enters the solar water heater 2 from the seawater inlet 1 and enters the evaporator 3 after being heated. The generated water vapor exits the steam outlet A4, and the rema...

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Abstract

The invention provides a solar seawater desalination device. The device comprises a seawater inlet, a solar heating system, a condenser, a vacuum injection system and a fresh water tank, wherein the vacuum injection system comprises a solar cell, an injection pump, a vacuum injection tube and an injection circulating water tank. The seawater desalination process is as follows: seawater enters a solar water heater from the seawater inlet, is heated and then enters an evaporator, the generated steam comes out from a steam outlet A and then enters the condenser, the condensed fresh water flows into the fresh water tank, and the steam which is not condensed flows into the pumping hole of the vacuum injection tube; and after the injection pump is started, the vacuum injection tube is driven towork, steam is pumped from the pumping hole to ensure that seawater is evaporated from the evaporator faster, and more water-steam mixture is sprayed out from an injection outlet, enters the injection circulating water tank and flows out of the fresh water tank. The device fully uses solar energy as energy to desalinate the seawater and is environmentally-friendly; and because of the action of the vacuum injection system, the seawater desalination efficiency is high and the investment cost is controllable.

Description

Technical field [0001] The present invention relates to a seawater desalination device, in particular to a device for desalinating seawater using solar energy and a vacuum jet pump and a desalination method thereof. Background technique [0002] We know that humans have tried various methods of desalinating seawater. How to achieve desalination of seawater efficiently and at low cost has always puzzled mankind. In recent years, with the application of solar energy technology, the cost of seawater desalination has dropped significantly, but problems such as low desalination efficiency have not been completely solved. [0003] The document with patent application number CN201010549238.1 discloses "a solar vacuum seawater desalination device", which mainly uses vacuum extraction to introduce seawater, and then uses the temperature of solar hot water to distill seawater to make the water and salt in the seawater Separate parts to achieve the effect of seawater desalination. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/14C02F103/08
CPCY02A20/124Y02A20/142Y02A20/212
Inventor 仇晓丰
Owner HUAWEI TEHCHNOLOGIES CO LTD
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