Integrated condensing solar power and seawater desalination method and system
A solar energy concentration and integrated system technology, applied in the system field
Active Publication Date: 2012-11-07
SHENZHEN ENVIRONMENT ENG SCI TECH CENT +1
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Problems solved by technology
Entering 2010, the research on obtaining electric energy by using solar concentrated light to evaporate seawater to generate electricity, and obtaining a large amount of high-quality freshwater resources by evaporating seawater desalination and desalination is gradually increasing, but there is still no mature technology that can form industrialization
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[0035] At a certain temperature, the liquid film droplets in the vacuum-tight container can quickly establish a dynamic equilibrium with its vapor phase, that is, the vapor molecules condense to the liquid surface at the same rate as the liquid molecules escape from the surface. At this time, the vapor pressure on the droplet surface is the saturated vapor pressure of the liquid at this temperature. The saturated vapor pressure of a liquid is related to temperature: as the temperature rises, the molecular movement accelerates, so the number of molecules entering the gas phase from the liquid phase increases in a unit time, and the vapor pressure increases.
[0036] The change of vapor pressure with absolute temperature can be expressed by the Clapeyron-Clausius equation:
[0037] d ln p dT = Δ H m ...
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Abstract
The invention relates to integrated concentrating solar power and seawater desalination method and system. The method comprises the following steps of: forming primarily filtered seawater into a liquid film in a pressure difference mode; then, evaporating the liquid film through a concentrating heat-collecting system capable of absorbing solar light and heat by adopting a high-temperature explosion and crystallization mode to obtain salt powder and steam; introducing the steam into power generating equipment for power generation; separating impurities in the steam emitted from the power generation through a separator so that most volatile organic compounds are oxidized into carbon dioxide and water; carrying out selective permeability and condensate recovery treatment on the rest un-oxidized steam to finally prepare high-grade fresh water by a condenser; and conveying salt powder byproducts separated from the seawater into a recovery system through a high-temperature crystallizer to recover. The invention obtains an electric energy source by utilizing concentrating solar power to evaporate seawater for power generation, can finish seawater desalination utilization and steam power generation and realize zero-cost seawater recycling by adopting a pressure difference filming and high-temperature evaporation mode, has small occupation of land, stable operation, high efficiency andeasy maintenance and industrialization formation.
Description
technical field [0001] The present invention relates to the fields of concentrated solar energy power generation and seawater desalination, in particular to a method for obtaining electric energy by using concentrated solar energy to generate electricity by evaporating seawater, and obtaining a large amount of high-quality freshwater resources by evaporating seawater for desalination and desalination, and a device designed using the method system. Background technique [0002] With the increasing shortage of petrochemical energy and the increasing pressure on environmental protection, countries are actively exploring the use of new energy, renewable energy, especially solar energy. Because solar energy has the advantages of unlimited reserves, universal existence, clean utilization and gradually emerging economy, it has become the most ideal alternative energy for human beings. Therefore, the research and development of solar power generation has become an energy strategic ...
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IPC IPC(8): F24J2/00C02F1/14C02F103/08
CPCY02E10/40Y02A20/124Y02A20/142Y02A20/212Y02W10/33Y02W10/37
Inventor 彭云龙温致平王石曾贤桂何晋勇陈兆勇李鸿江谢璀孙宁
Owner SHENZHEN ENVIRONMENT ENG SCI TECH CENT