Multi-effect vertical tube hydrophilic and breathable distillation apparatus having self heat return function

Abstract

The invention provides a multi-effect vertical tube hydrophilic and breathable distillation apparatus having a self heat return function. Three condensing vertical tubes are sequentially mounted in an embedded manner, and a cylindrical cavity is formed between every two adjacent condensing vertical tubes; bottom end openings of the three condensing vertical tubes are sealed through cover plates, and top end openings are respectively provided with arched end covers; a spiral coil is arranged on the outer surface of the condensing vertical tube on the outer layer; one end of the spiral coil is provided with a feeding original water inlet and the other end is communicated with a feeding original water tank; hydrophilic porous breathable films are arranged on the outer surfaces of the condensing vertical pipes on the middle layer and the inner layer, and a spiral water tank is formed on the outer surface of the condensing vertical pipe not attached with the hydrophilic porous breathable film; round water baffle ribs are formed on the arched end covers on the middle layer and the inner layer; the condensing vertical pipe on the inner layer functions as a heating water tank, and a cover plate on the inner side of the heating water tank is provided with a heater and a drain valve. The distillation apparatus disclosed by the invention can improve utilization efficiency of heat energy through self heat return and latent heat of multi-effect recovery steam condensation, and can improve a demand on freshwater amount by increasing effect number as well as evaporation and condensation areas.

Description

technical field [0001] The invention relates to a multi-effect standpipe spiral hydrophilic and air-permeable distillation device with the function of self-regeneration, in particular to a kind of self-regeneration and multi-effect recovery of steam condensation latent heat to improve the heat utilization efficiency of the distillation device and can increase the The utility model relates to a device for increasing the demand for fresh water quantity by improving the number of effects and evaporation and condensation areas so as to reduce the cost of desalinated water per unit volume, and belongs to the technical field of water treatment. Background technique [0002] At present, there are about 500 million people in the world who do not have access to clean and safe drinking water. With the increasing number of areas close to the development limit of water resources and the increasing number of extreme weather in the world, this number will increase by 5 by 2025. doubled to...

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Problems solved by technology

[0003] In order to overcome the defects of low energy utilization rate, high thermal inertia of raw water, high energy consumption and difficulty in small-scale application of existing seawater and brackish water desalination devices, the present invention provides a multi-effect standpipe spiral profiling device with self-regenerating function The water-breathing distillation device can be used in remote areas or islands, and can be combined with solar energy or industrial waste heat, with high energy utilization and low energy consumption

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