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Dehumidizer for air dehumidification, air dehumidification method and device

An air dehumidification and air dehumidifier technology, which is applied in separation methods, space heating and ventilation, chemical instruments and methods, etc., can solve the problems of corrosiveness, pollute the environment, easy crystallization, etc., and achieve low equipment cost and pollution reduction. , the effect of quick removal

Inactive Publication Date: 2012-02-01
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Hygroscopic solutions such as calcium chloride, lithium chloride, and lithium bromide are often used as dehumidifiers, but their inherent disadvantages include easy crystallization, corrosiveness, and environmental pollution.

Method used

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  • Dehumidizer for air dehumidification, air dehumidification method and device
  • Dehumidizer for air dehumidification, air dehumidification method and device
  • Dehumidizer for air dehumidification, air dehumidification method and device

Examples

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Effect test

Embodiment 1

[0026] Using 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF 4 ]) in aqueous solution is a desiccant.

[0027] Such as figure 1As shown, an air dehumidification method and device according to the present invention are shown. The dehumidification system includes an air dehumidifier 1, a solution regenerator 2 and a solution pump 3. The high-concentration ionic liquid solution enters the air dehumidifier 1 from the d-end to absorb water vapor in the air and becomes a low-concentration ionic liquid solution from a end flows out, and it enters the solution regenerator 2 from the b end under the action of the solution pump 3 for regeneration, and part of the moisture in the low-concentration ionic liquid solution evaporates due to the heat provided by the regeneration heating device and is discharged from the k end to the environment. The low-concentration ionic liquid solution becomes a high-concentration ionic liquid solution, and flows out of the solution regenerator ...

Embodiment 2

[0029] Using 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMIM][BF 4 ]) in aqueous solution is a desiccant.

[0030] figure 2 Another air dehumidification method and device according to the present invention are shown. The system includes an air dehumidifier 1, a solution regenerator 2, a solar heat collector 4, a heat collection pump 5, a concentrated solution tank 6 and a solution pump 3, which drive the ionic liquid solution to dehumidify the air through solar energy.

[0031] The biggest advantage of solar energy is that it has good seasonal matching. When the weather is hotter and the humidity is higher, the solar radiation conditions are better and the heating capacity can be increased; because solar energy is a discontinuous energy source, it is affected by The impact of weather changes is relatively large. In order to ensure the continuous and stable operation of the solar dehumidification and air-conditioning system, energy storage is a very critical technology....

Embodiment 3

[0036] The aqueous solution of 1,3-dimethylimidazole phosphate dimethyl ([MMIM][DMP]) was used as the dehumidifier.

[0037] Figure 4 Another air dehumidification method and device according to the present invention are shown. The system includes an air dehumidifier 1, a solution regenerator 2 (an air-cooled condenser of a refrigeration unit) and a solution pump 3, and the low-concentration ionic liquid solution is regenerated by the heat of condensation provided by the refrigeration unit condenser (here The condenser coil is sprayed with a low-concentration ionic liquid solution, and the principle of evaporation and condensation is used to recover the condensation heat to achieve the regeneration of the dehumidification solution).

[0038] In the diagram, the air-cooled condenser of a refrigeration unit provides solution regeneration heat: the low-concentration ionic liquid solution enters the air-cooled condenser 2 from the b end, where it absorbs the heat released by the ...

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Abstract

The invention discloses a dehumidizer for air dehumidification. The dehumidizer provided by the invention is an ionic liquid solution formed by dissolving an ionic liquid in water, wherein the ionic liquid is formed by organic positive ions and inorganic negative ions, and the melting point of the ionic liquid is close to or is lower than room temperature. In addition, the invention further discloses a method and a device for air dehumidification by the adoption of the above dehumidizer. In comparison with traditional salting liquids (lithium bromide, lithium chloride and calcium chloride aqueous solutions and the like), the dehumidizer provided by the invention has the following advantages: 1) the applied ionic liquid solution is in the liquid state at normal temperature, is intermiscible with water, and will not be crystallized during operation, so as to guarantee the reliable operation of a system; 2) the applied ionic liquid solution has similar or lower water vapor pressure than a traditional dehumidifying salting liquid so as to raise the dehumidifying efficiency; 3) the applied ionic liquid solution will not corrode metal equipment such as steel equipment such that the equipment has low cost and long service life; 4) the dehumidizer has nonvolatility so as to reduce the environmental pollution.

Description

technical field [0001] The invention relates to a dehumidifying agent for air dehumidification, and a method and device for dehumidifying air by using the dehumidifying agent. Background technique [0002] With the development of industry and the improvement of living standards, dehumidification has gradually gained people's attention and a variety of dehumidification methods have been produced, including the condensation dehumidification method that lowers the air temperature below the dew point temperature to allow water to be analyzed; The pressurization method in which the partial pressure of the vapor is increased to cause the precipitation of water vapor; the dehumidification of the air is achieved by using a solid or liquid material with dehumidification performance in direct contact with the air. Liquid dehumidification materials are widely used due to the following advantages: (1) easy to achieve isothermal dehumidification, small irreversible loss, and high thermod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/28F24F3/14
Inventor 田长青罗伊默邵双全
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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