System and method for desalinating seawater through absorbing solar energy via liquid-solid fluidized bed

A fluidized bed and solar energy technology, applied in the field of solar seawater desalination, can solve the problems of low efficiency and high cost of seawater desalination, and achieve the effect of high absorption temperature, small heat loss, and high-efficiency absorption

Inactive Publication Date: 2014-07-09
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0003] The problem to be solved in this patent is: to provide a method for efficiently utilizing solar energy to desalinate seawater, so as to solve the problem

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  • System and method for desalinating seawater through absorbing solar energy via liquid-solid fluidized bed
  • System and method for desalinating seawater through absorbing solar energy via liquid-solid fluidized bed

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[0014] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. This example is implemented on the premise of the technical solution of the present invention, and a detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following examples.

[0015] The invention proposes a seawater desalination device using a liquid-solid fluidized bed to absorb solar energy, such as figure 1 Shown. This embodiment includes: liquid-solid fluidized bed 2, solar concentrator 1, preheater 7, pump 5, compressor 4, gas-liquid separator 3, fresh water storage tank 6, sea water storage tank 9 and filter 8. The output end of the hot end of the preheater outputs fresh water, and the inlet end of the cold section of the preheater is filled with seawater.

[0016] The solar concentrator is a solar energy supply device, and the concentrated solar radiation...

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Abstract

The invention discloses a system and a method for desalting seawater through absorbing solar energy via a liquid-solid fluidized bed, belonging to the field of solar-powered seawater desalination technologies. The system comprises a solar spotlighting device, the liquid-solid fluidized bed, a pump, a compressor, a preheater, a filter, a gas-liquid separator and a liquid storage tank, wherein the solar spotlighting device is used for and directly irradiating the sunlight into the liquid-solid fluidized bed after focusing the sunlight, absorbing the solar thermal radiation by utilizing solid particles and heating the seawater in the liquid-solid fluidized bed; after being compressed, the pressure and the temperature of the water vapor generated in the liquid-solid fluidized bed rise, and the water vapor enters into the preheater to preheat the seawater which is about to enter into the liquid-solid fluidized bed; and after condensation, fresh water is obtained. The system provided by the invention is operated at normal pressure; and according to the system, the solar thermal radiation is absorbed by utilizing the solid particles with high absorptivity in the liquid-solid fluidized bed, and the evaporation efficiency of the seawater is improved at the same time by utilizing the efficient heat exchange between the liquid and the solid in the liquid-solid fluidized bed.

Description

technical field [0001] The invention relates to a system and method for seawater desalination by using solid particles to directly absorb solar energy as a heat source, and belongs to the field of solar seawater desalination. Background technique [0002] Currently, the most widely used seawater desalination technologies include multi-stage flash evaporation, multi-effect evaporation and reverse osmosis. These methods all consume a large amount of fuel and power resources. Desalination of seawater by using solar energy, a renewable energy source, can avoid energy and environmental problems caused by the consumption of a large amount of fuel and electric power resources. Contents of the invention [0003] The problem to be solved in this patent is to provide a method for efficiently using solar energy to desalinate seawater, so as to solve the problems of high cost and low efficiency of seawater desalination at the present stage, reduce environmental pollution, and improve...

Claims

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Application Information

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IPC IPC(8): C02F1/14C02F103/08
CPCY02A20/124Y02A20/141Y02A20/142Y02A20/212
Inventor 张天威蒲文灏岳晨韩东何纬锋刘轩
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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