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A membrane distillation component and system

A technology of membrane distillation and components, which is applied in the field of membrane distillation, can solve the problems of low efficiency, small flux, and high energy consumption in the membrane distillation process, and achieve the effects of increasing temperature polarization coefficient, reducing energy consumption, and improving thermal efficiency

Active Publication Date: 2021-09-03
HARBIN INST OF TECH
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Problems solved by technology

[0005] The problem solved by the present invention is: due to the phenomenon of temperature polarization, the membrane distillation process has low efficiency, small flux and high energy consumption

Method used

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  • A membrane distillation component and system
  • A membrane distillation component and system
  • A membrane distillation component and system

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Embodiment Construction

[0039] It should be noted that, in the case of no conflict, the features in the embodiments of the present invention can be combined with each other.

[0040] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] The principle of membrane distillation is: when two aqueous solutions with different temperatures are separated by a hydrophobic microporous membrane 15, under the action of the water vapor pressure difference on both sides of the membrane, water vapor on the hot side of the membrane will pass through the hydrophobic microporous membrane 15 The membrane pores enter the transfer process of the cold side of the membrane to achieve the purpose of separating the liquid-phase aqueous solution from the gas-phase water. The traditional membrane distillation system usually heats the feed liq...

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Abstract

The present invention provides a membrane distillation component and system. The membrane distillation component includes a hot material side channel, a cold material side channel, and a hydrophobic microporous membrane arranged between the hot material side channel and the cold material side channel. The hot material side channel communicates with the cold material side channel through the hydrophobic microporous membrane; the hydrophobic microporous membrane can convert the received electric energy into heat energy to heat the feed liquid on both sides of the hydrophobic microporous membrane. The membrane distillation component and system provided by the present invention reduce the temperature loss of the feed liquid at the membrane boundary by using a hydrophobic microporous membrane with light-to-heat conversion capability and electrothermal conversion capability, and using solar energy and electric energy to directly heat the membrane. Avoid temperature polarization.

Description

technical field [0001] The invention relates to the technical field of membrane distillation, in particular to a membrane distillation component and system. Background technique [0002] With the development of human society, especially the improvement of the level of industrialization and human living standards, the demand for pure water in human society has intensified. At present, more than 1 billion people on the earth lack drinking water. It is estimated that 70% of the world's population will face water shortages by 2025. shortage problem. In addition, wastewater management and sewage treatment are facing increasing challenges in coastal and inland areas. Therefore, converting non-drinking water sources such as seawater into pure water is an effective means to solve water shortage and water pollution. [0003] Compared with the current commercial seawater desalination technologies such as reverse osmosis and nanofiltration, membrane distillation seawater desalination...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D61/36C02F1/08C02F1/14
CPCY02A20/212
Inventor 何玉荣黄健陈梅洁胡彦伟汪新智
Owner HARBIN INST OF TECH
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