Water collector blade based on separation membrane, water collector and cooling tower

Abstract

The invention relates to the technical field of water vapor recycling of cooling towers in power plants and chemical plants, in particular to a water collector blade based on a separation membrane, a water collector and a cooling tower. The water collector blade based on the separation membrane comprises a hydrophilic device, and the separation membrane with hydrophilic and hydrophobic functions is movably arranged at the outer side of the hydrophilic device. The side, with the hydrophilic function, of the separation membrane is attached to the hydrophilic device, the side, with the hydrophobic function, of the separation membrane deviates from the hydrophilic device, and liquid drops can penetrate through the separation membrane to enter the hydrophilic device. According to the water collector blade based on the separation membrane, the hydrophilic device arranged in the water collector blade is used for collecting moisture of airflow flowing through the hydrophilic device, and the separation membrane which is arranged outside the hydrophilic device and has opposite wettability physical performance is used for collecting moisture of airflow flowing out of the water collector blade. The recovery rate of water vapor is improved to the maximum extent, and the secondary entrainment phenomenon of liquid drops is reduced.

Description

technical field [0001] The invention relates to the technical field of water vapor recovery and utilization of cooling towers in power plants and chemical plants, and more specifically, to a water eliminator blade, a water eliminator, and a cooling tower based on a separation membrane. Background technique [0002] Cooling towers are widely used in electric power, chemical industry, petroleum, metallurgy and other industries. They are important devices for cooling circulating water. However, during the operation of open cooling towers, various water losses are always accompanied, such as wind loss, evaporation loss, etc. , for power plants, evaporation loss and wind blowing loss account for 30% to 70% of the total water consumption of the power plant, and the water loss is serious; according to statistics, the water loss of a 600MW thermal power plant is as high as 1000t / h, and the annual direct economic loss reaches more than 14 million yuan ; It can be seen that water savi...

AI Technical Summary

Problems solved by technology

Using water vapor to spontaneously condense into water flow, on the one hand, it takes a long time, on the other hand, it cannot well avoid the phenomenon of secondary entrainment of liquid droplets, water vapor will follow the loss of gas, and the water vapor recovery rate and recovery efficiency are difficult to guarantee

[0005] Chinese patent CN201104149Y discloses a cooling tower water vapor recovery device without power, which uses a mesh water eliminator made of sponge or fiber fabric to replace the traditional wave eliminator, and adds a cooling pool for further cooling of the cooling water. The water vapor recovery rate is improved to a certain extent, but as the sponge is soaked, the water collection capacity will be greatly reduced. Therefore, long-term use will aggravate the secondary entrainment of droplets or increase the manpower and material costs of sponge replacement.

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