Integrated system based on solar seawater desalination and salinity gradient energy power generation

Abstract

The present application provides an integrated system based on solar seawater desalination and salinity gradient energy power generation. The system comprises a seawater desalination device, a salinity gradient energy power generation device and a solar energy collection device; the seawater desalination device comprises a seawater layer, an evaporation layer and a condensation layer in sequence from the bottom to the top; the condensation layer is an inverted cone-shaped condensation surface, and a fresh-water collection tank is arranged directly below the top point of the condensation layer;the evaporation layer is provided with a heat absorption material, and the heat absorption material is connected with the solar energy collection device in a thermal conduction manner for heating seawater; the seawater layer is provided with a first water inlet and a first water outlet; and the first water inlet is used for introducing the seawater, and the first water outlet communicates with the salinity gradient energy power generation device. According to the system provided by the present application, concentrated seawater produced by desalination of the seawater is discharged in the salinity gradient energy power generation device, salinity gradient energy is converted into electric energy, and the concentrated seawater is diluted at the same time, so that a damage degree of the concentrated seawater discharge water environment is reduced, and the technical problem that construction areas of seawater desalination facilities are limited due to the concentrated seawater dischargeproblem is solved.

Description

technical field [0001] This application relates to the field of new energy equipment, in particular to an integrated system based on solar desalination and salinity difference energy generation. Background technique [0002] The problem of water resources is a global environmental problem, and more than 97% of the water resources in the world are salt water such as sea water. Because seawater desalination has low energy consumption and abundant raw water resources, countries around the world regard seawater desalination as the most feasible and economical way to obtain fresh water. The green and sustainable seawater desalination methods developed by people at present mainly use solar heat for distillation, and then collect the distilled fresh water. [0003] The process of seawater desalination will produce a large amount of high-concentration concentrated seawater. Direct discharge of concentrated seawater will cause damage to the ecological environment. The subsequent tre...

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Problems solved by technology

[0004] This application provides an integrated system based on solar desalination and salinity energy power generation, which is used to solve the technical problem that the existing seawater desalination facility construction area is limited by the discharge of concentrated seawater

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