Gas hydrate method seawater desalination system and method

Abstract

The invention discloses a seawater desalination system adopting a gas hydrate method. The gas is recycled between the first reaction kettle and the second reaction kettle, so that gas hydrate can be generated from seawater, further desalinated water is generated, seawater desalination is realized, and the seawater desalination degree is greatly improved. Meanwhile, the pressurization system is arranged on the pipeline system, the pressure of the gas hydration reaction system can be adjusted through the piston pressurization system, and then the seawater desalination efficiency is improved. Generally speaking, a gas hydrate is generated from gas and seawater, and then the gas hydrate is decomposed to obtain desalted water, so that the purpose of seawater desalination is achieved. By adopting the scheme, the seawater desalination effect can be greatly improved, the cost is reduced, and the method has popularization and application values.

Description

[0001] This application is a divisional application of the invention patent of the parent application titled "a gas hydrate seawater desalination system"; the application number of the parent application is: CN201810450599.7; the application date of the parent application is: 2018.05.11. technical field [0002] The invention relates to the technical field of seawater desalination, in particular to a gas hydrate seawater desalination system and method. Background technique [0003] As a scarce basic resource, fresh water has a very important impact on people's production and life. At present, the shortage of fresh water resources in the world is becoming more and more serious, and the shortage of fresh water resources has become the focus of attention of all countries in the world. Desalination of seawater is a method of separating salt and water in seawater to obtain fresh water, which can provide a stable supply of fresh water resources. Therefore, seawater desalination t...

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Problems solved by technology

[0004] The existing seawater desalination methods mainly include distillation, freezing, reverse osmosis, electrodialysis, ion exchange, solvent extraction, etc., but these methods are limited by cost, process and efficiency

At present, distillation and reverse osmosis have achieved industrial production, but the traditional distillation equipment is more complex, energy-consuming, easy to foul, and the cost of steam compressor is high. The desalination device has complex structure, low economic benefit, difficult operation, replacement Low thermal efficiency and other issues; the reverse osmosis method has strict requirements on pretreatment, the life of the membrane is short, and it needs to be replaced regularly. In the case of low seawater temperature, heat treatment is required, the recovery rate of high-pressure compressed seawater is low, and the cost of water production is high.

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