Heat pipe type low temperature two-effect seawater desalination device

Abstract

The invention relates to a low temperature two-effect sea water desalting device. The device adopts engine cooling water or solar energy hot water and the like as a heat flow and adopts a gravity type heat pipe with high heat conductivity coefficient as a heat transfer medium, and seawater is subjected to low temperature distillation under low boiling point in a vacuum environment created by a jet flow vacuum pump. More importantly, the vapor generated by first effect distillation is utilized as a second effect hot source again to continue to evaporate seawater, so that an energy source is effectively utilized, and thus the structure of the sea water desalting device is simple, the manufacture is simple, the consumption is less, the maintenance is convenient, the cost is low, the service life is long, and the water producing ratio is large; compared with other sea water desalting devices, the low temperature two-effect sea water desalting device is greatly improved on aspects such as economy, practicability and working stability.

Description

technical field [0001] This patent relates to a seawater desalination device, in particular to a heat pipe type low-temperature double-effect seawater desalination device. Background technique [0002] At present, the main methods of seawater desalination are distillation, electrodialysis, reverse osmosis, freezing, solvent, hydrate, ion exchange and so on. Among them, the distillation method has the longest application history and the widest range. It uses the characteristic that salt is almost insoluble in low-pressure steam, first heats seawater to vaporize it, and then recondenses the resulting steam to obtain distilled water. The process of producing fresh water by distillation is accompanied by the phase change of water, so the energy consumption is high, and the problems of scaling and corrosion are generally serious. However, the distillation method has the advantages of simple principle, high quality fresh water, direct use of low-temperature heat source, long-ter...

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Problems solved by technology

The "marine heat pipe seawater desalination device" with application number 201310007072.4 has better solved the above problems in the current seawater desalination equipment, but the device has problems such as scouring of the heat pipe and insufficient use of heat during seawater spraying.

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