Seawater desalination device based on rotary gas hydrate separation method

A rotary separation and hydrate technology, applied in seawater treatment, water/sewage treatment, water/sludge/sewage treatment, etc., to save energy, improve efficiency, and concentrate and compact functions

Inactive Publication Date: 2020-12-11
DALIAN UNIV OF TECH
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Problems solved by technology

[0004] In view of the above existing problems, the present invention provides a seawater desalination device based on the rotary separation gas hydrate method, which adopts a rotary scraper separation mechanism, effectively solves the problem of efficient separation of hydrates in seawater desalination by the gas hydrate method, and realizes hydration The continuous cycle process of the generation-separation-decomposition of substances improves the efficiency of seawater desalination by gas hydrate method

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  • Seawater desalination device based on rotary gas hydrate separation method

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Embodiment 1

[0017] Embodiment one, refer to figure 1 , this embodiment proposes a seawater desalination device based on the rotary separation of gas hydrate method, which is connected according to the device structure, and the specific steps are as follows:

[0018] (1) Preparation: Open the upper cover 14 of the stainless steel container 3, fill or clean the cylindrical porous medium 11 into the stainless steel container 3, the residual liquid is discharged from the water outlet 10, and the installation scraper 13 stays at the initial position, that is, paste and round Metal mesh 5 surface;

[0019] (2) Water intake: After the device is vacuumed and leak detected, an appropriate amount of seawater is passed into the cylindrical porous medium 11 until the pores are saturated, and the coolant is passed into the cooling pipe 5 to provide a supply for hydrate formation. After the temperature is stabilized at low temperature, gas is introduced into the gas inlet 2 to reach the hydrate phase ...

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Abstract

The invention belongs to the field of seawater desalination, and provides a seawater desalination device based on a rotary gas hydrate separation method. The seawater desalination device can be used for continuously producing fresh water through single-line/double-line operation. If gas starts to be introduced into a stainless steel container, seawater is injected into a cylindrical porous mediumfrom a water inlet; under a certain temperature and pressure condition, hydrate crystals are nucleated on a porous medium-net-gas interface and grow towards a gas phase; generated hydrates are separated by a rotary scraper; hydrates collected in a decomposition area are decomposed through thermal stimulation of a heating jacket, and after obtained fresh water is collected to the height of a liquidlevel meter, a control valve is opened to discharge the fresh water into a water tank; and heat is absorbed in the hydrate decomposition process, and seawater is introduced into the cylindrical porous medium after being pre-cooled. Hydrates are generated in a seawater environment in a stainless steel container, hydrates on the surface of the cylindrical porous medium is separated by the rotary scraper, and desalted fresh water is obtained by heating and decomposing the hydrates.

Description

technical field [0001] The invention belongs to the technical field of seawater desalination, and in particular relates to a seawater desalination device based on a rotary separation gas hydrate method. Background technique [0002] Nearly 97.5% of the world's total water resources are salt water resources such as seawater. Seawater desalination is considered to be the most practical method to continuously provide freshwater sources. Seawater desalination refers to the technology of separating the salt in seawater into fresh water, and the common methods are thermal distillation and reverse osmosis membrane. In recent years, the seawater desalination technology of gas hydrate method has developed rapidly. It uses the formation and decomposition process of gas hydrate to realize the removal of salt in seawater (salt ions will not enter the gas hydrate crystal). Low consumption, light corrosion, no precipitation and other advantages. [0003] The researchers found that when ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C02F103/08
CPCC02F1/00C02F2103/08
Inventor 宋永臣王雪寒杨明军赵洁郑嘉男
Owner DALIAN UNIV OF TECH
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