Method for desalinating sea water by using seawater source heat pump technology

A source heat pump and seawater technology, which is applied in the field of low-temperature multi-effect seawater distillation, can solve the problems of short cycle period, slow evaporation speed, and large heat pump power consumption, and achieve the effect of improving work efficiency and reducing energy consumption.

Inactive Publication Date: 2008-02-27
葆光(大连)节能技术研究所有限公司
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Problems solved by technology

[0007] 1. The latent heat of the steam obtained by evaporation is not effectively utilized, and the steam can be used as the next effective seawater evaporation heat source
[0008] 2. The temperature of the desalinated seawater is not heated by the heat of the waste heat of the ship. There will be insufficient heat supplement for low-temperature seawater. Changes in the ambient temperature will make the system unstable and even cause a serious drop in system output
[000

Method used

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  • Method for desalinating sea water by using seawater source heat pump technology

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Embodiment Construction

[0018] Fig. 1 is a schematic diagram of the present invention.

[0019] In Fig. 1, 1. Power plant steam turbine condenser circulates and cools seawater, 2. Condenser, 3. Compressor, 4. Evaporator, 5. Reservoir, 6. High pressure water pump, 7. Jet vacuum pump, 8. Condensate Recovery pipe, 9. Condenser, 10. Water pump, 11. Steam recovery pipe, 12. Generator, 13. Seawater source heat pump unit, 14. Building heating pipe switching valve.

[0020] In Fig. 1, the steam turbine condenser of the power plant circulates and cools the seawater (1) in two ways, one way enters the condenser (2) of the seawater source heat pump unit (13), and the other way enters the evaporator (4) of the seawater source heat pump; (3) Doing work puts out the heat contained in the seawater entering the evaporator (4) through the phase change of the working medium in the compressor, and transfers it to the condenser (2) to increase the temperature of the seawater entering it; the seawater after the temperatu...

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Abstract

The invention discloses a desalinating technique of seawater through water source heat pump under negative pressure condition, wherein the system is composed of seawater source heat pump, jet vacuum pump, generator and pump; a lower pressure condition is formed in the generator to evaporate the seawater with temperature elevated; the steam is leaded into next generator acted by jet vacuum pump to release potential heat and evaporate seawater, which realizes the utilization effectively; the steam condensate is extracted from the generator to product fresh water. The invention improves the energy utilizing efficiency as heat supplying equipment in winter, which releases the heat pollution of circulating condensate of electric factory due to low temperature of outlet water of seawater source heat pump evaporator and system generator.

Description

Technical field [0001] The present invention adopts the circulating cooling water of the power plant as the raw material and heat source for desalination of seawater, and uses the seawater source heat pump technology to extract heat from the circulating cooling water of the power plant in the non-heating season (in the heating season, it can provide heating for buildings). Heat, the method of low-temperature multi-effect seawater distillation after raising the temperature of part of the initial state of the circulating cooling water of the power plant. Background technique [0002] With the rapid and steady development of our country's national economy, the shortage of fresh water resources in China has become a serious situation, and the problem of shortage of fresh water resources has become a restrictive factor for the rapid economic development of many coastal areas. [0003] At present, the government has started vigorously developing seawater desalination projects in c...

Claims

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Application Information

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IPC IPC(8): C02F1/04C02F103/08
CPCY02B30/123Y02B30/52Y02A20/124
Inventor 刘贵
Owner 葆光(大连)节能技术研究所有限公司
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