Natural circulating solar seawater desalination device employing pulse flash evaporation

Abstract

The invention discloses a natural circulating solar seawater desalination device employing pulse flash evaporation. The natural circulating solar seawater desalination device comprises a vacuum pump, wherein the suction inlet of the vacuum pump is sequentially connected with a first valve, a shell pass of a condenser, an evaporator, a first one-way valve, a second valve and a hot seawater ascending pipe by virtue of pipelines; a solar heat collector system is arranged on the pipeline between the first one-way valve and the inlet of the evaporator; the inner side of the inlet of the evaporator is provided with a sudden amplification structure; an inclined draw-off plate is arranged at the lower part; one end of the shell pass of the condenser is communicated with the pipeline between the first one-way valve and the second valve; the other end of the shell pass is connected with a cold seawater ascending pipe; the shell pass of the condenser is connected with a third one-way valve and a fresh water descending pipe; the inner cavity of the evaporator is connected with a saline water descending pipe by virtue of a second one-way valve; the evaporator is connected with a pressure gage. The natural circulating solar seawater desalination device has the advantages of being simple in structure and high in heat utilization efficiency, utilizing solar energy, saving electric energy and an external energy sources, and the like.

Description

technical field [0001] The invention relates to a seawater desalination device, in particular to a pulsation flash natural circulation solar seawater desalination device. Background technique [0002] Seawater desalination has become one of the important means to solve the shortage of fresh water resources. The existing seawater desalination methods include multi-stage flash evaporation, multi-effect evaporation, pressure steam distillation, reverse osmosis and electrodialysis, etc. No matter what kind of seawater desalination method, it needs to consume a lot of energy, so seawater desalination is a High-energy-consuming industries need to consume a lot of fuel or electricity, and energy consumption accounts for 33% to 50% of the cost of desalinated water production. The energy reliance of these methods can drive up the cost of desalination as fossil fuels become increasingly scarce. [0003] Solar energy has the unique advantages of unlimited reserves and complete cleanl...

AI Technical Summary

Problems solved by technology

Existing small-scale solar desalination devices are mostly installed on islands that are sparsely populated and lack electricity and steam heat sources. Most of the current solar desalination devices need to install water pumps and automatic control systems, and require regular inspections and maintenance by operating personnel. The development of seawater desalination devices capable of continuous and automatic operation without external power has become an inevitable trend in the development of miniaturized solar seawater desalination devices

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