Low-temperature heat energy driven double-container device for distilling and separating water evaporated under negative pressure

A negative pressure evaporation and separation device technology, applied in heating water/sewage treatment, general water supply saving, etc., can solve the problems of high vacuum pump consumption, complex system, difficult maintenance, etc.
CN101993122AInactive Publication Date: 2011-03-30BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2011-03-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention aims to provide a device for distilling and separating water evaporated / boiled under negative pressure. The device has low heating temperature, high efficiency and low cost. The invention provides a scheme, which ensures that the needed negative pressure can be produced in the sea water desalinization systems without vacuum pumps, thus reducing the boiling temperature of the water solution to 30-50 DEG C. The water solution can be boiled as long as the temperature of the heating source is higher than 30-50 DEG C. The heating source for heating and evaporating the water solution in the invention can be water from solar heat collectors, tail water with higher temperature from the power plants, chemical plants, smelting plants and the like or water completing heat exchange with the residual heat from the power plants, chemical plants and smelting plants. The temperature of the heating fluid needed by the invention can be lower than 60 DEG C, preferably 37 DEG C, thus effectively utilizing the solar energy or largely recovering and utilizing the industrial residual heat and having great value in environmental protection and energy saving.
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Description

technical field

[0001] The invention relates to a low-temperature heat-driven dual-container negative-pressure evaporation water distillation and separation device, specifically a low-temperature heat source such as solar energy and waste heat to treat separated water (such as seawater, water containing impurities, water containing pollution, etc.) Carry out separation and purification treatment. Background technique

[0002] Existing water purification methods include distillation, electrolysis, and reverse osmosis. The distillation method is to use a heat source to heat the water to be separated (such as seawater, water containing impurities, water containing pollution, etc., hereinafter also referred to as "water to be separated") to distill out water vapor, and then condense the water vapor to obtain purified fresh water Methods. Since the boiling point of water under normal pressure is as high as 100°C, in order to obtain a large amount of water vapor, it must be heat...

Claims

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