A seawater multi-effect membrane distillation desalination salinity valve opening flow control device

Abstract

The invention relates to a seawater multi-effect membrane distillation desalination salinity valve opening flow control device, the structure of which comprises: microporous membrane, seawater desalination device, sea current mixing rod, seawater evaporator, salinity flow control device, microporous membrane Embedded and installed on the upper surface of the seawater desalinator, the sea current mixing rod is installed inside the seawater desalinator, and the seawater evaporator is embedded and installed at the bottom of the seawater desalinator. When the inflow of the seawater desalinator increases, the seawater inside the seawater The salinity becomes thinner under the dilution of excess seawater, and the content of hydrated metal ions in seawater decreases per cubic meter, which reduces the conductivity of the sea salt conductor inside the salinity flow control device, reduces the suction of the water flow control block, and makes the water flow The lowering of the control block reduces the water outlet of the water inlet area, so that the inflow of the seawater desalinator becomes smaller, so as to balance the heat loss of the water vapor passing through the microporous membrane, increase the water production ratio that is reduced due to the increase of the inflow, and increase the seawater desalination The water production rate of the device.

Description

technical field [0001] The invention relates to a seawater multi-effect membrane distillation desalination salinity valve inflow control device, and relates to the field of seawater desalination. Background technique [0002] Seawater desalination is the use of seawater desalination to produce fresh water. The process of obtaining fresh water from seawater is called seawater desalination, which can increase the total amount of fresh water and ensure a stable water supply such as drinking water for coastal residents and supplementary water for industrial boilers. [0003] However, in the desalination process of seawater multi-effect membrane distillation, when the inflow rate increases, the membrane flux increased with the increase in inflow rate requires a greater driving force to drive water vapor through the microporous membrane, resulting in The larger the temperature difference, the larger the temperature difference between the two sides of the microporous membrane incre...

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Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a seawater multi-effect membrane distillation desalination salinity valve inflow control device, which solves the problem that the water production ratio of the multi-effect membrane distillation process will drop significantly when the seawater inflow increases. question

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