Dehumidification reel and preparation method thereof

A runner, aluminum oxide technology, applied in the field of dehumidification, can solve the problems of low dehumidification capacity of the dehumidification runner, uneven thickness of silicate film, unfavorable use, etc., to prevent uneven deposition effect, good appearance state , The effect of strong hygroscopic performance

Active Publication Date: 2014-02-19
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
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Problems solved by technology

[0004] The prior art discloses a variety of hygroscopic agents for dehumidifiers with rotating wheels and methods for compounding hygroscopic agents on the rotating wheel. The common method used at present is the sintering method, that is, sintering after impregnating the rotating wheel in the hygroscopic agent, but this method obtains The dehumidification capacity of the dehumidification wheel is not high and the service life is relatively short, which is not conducive to industrial use
The prior art also discloses a method for preparing a desiccant wheel by coating an inorganic fiber membrane coated with an aqueous solution of sodium silicate and sulfate metathesis, but this method needs to be carried out in a solution, and the obtained silicic acid The salt film has disadvantages such as uneven thickness and loose structure

Method used

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  • Dehumidification reel and preparation method thereof
  • Dehumidification reel and preparation method thereof
  • Dehumidification reel and preparation method thereof

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preparation example Construction

[0034] The present invention also provides a method for preparing a dehumidification wheel, comprising the following steps:

[0035] mixing an aqueous sodium silicate solution with aluminum oxide sol to obtain a reaction stock solution;

[0036] Soak the runner in the constant temperature reaction stock solution, take it out and evenly distribute the reaction stock solution on the surface of the runner;

[0037] In a carbon dioxide atmosphere, the reaction stock solution on the surface of the runner reacts to obtain a runner compounded with silica-alumina hydrogel on the surface;

[0038] The dehumidification runner is obtained by aging the runner wheel compounded with silica-alumina hydrogel on the surface, soaking in dilute acid, aging and drying in sequence.

[0039] In the present invention, firstly, the sodium silicate aqueous solution and the aluminum oxide sol are mixed to obtain a reaction stock solution. Among them, the modulus of the aqueous sodium silicate solutio...

Embodiment 1

[0063] Configure sodium silicate aqueous solution with modulus n=2.9 and aluminum oxide sol with a pH value of 6.8 and a mass fraction of 3%, take 10 parts of sodium silicate aqueous solution and 2 parts of aluminum oxide sol and mix them with a magnetic stirrer Stir fully to obtain a transparent or translucent, stable characteristic reaction stock solution; place the reaction stock solution in a water bath with a constant temperature device, and control the temperature at 30°C; soak the prefabricated glass fiber honeycomb into the constant temperature reaction stock solution Take out the soaked glass fiber honeycomb after 30 minutes, the reaction stock solution between the honeycomb holes flows out with its own gravity, and at this time the surface of the glass fiber honeycomb evenly distributes a layer of reaction stock solution; figure 1 The air inlet of the reactor shown is opened, the upper cover is kept closed, and carbon dioxide gas is rushed in. When the wet litmus pape...

Embodiment 2

[0067] Configure sodium silicate aqueous solution with modulus n=2.9 and aluminum oxide sol with a pH value of 6.8 and a mass fraction of 3%, take 10 parts of sodium silicate aqueous solution and 2 parts of aluminum oxide sol and mix them with a magnetic stirrer Thoroughly stir to obtain a transparent or translucent, stable characteristic reaction stock solution; place the reaction stock solution in a water bath with a constant temperature device, and control the temperature at 35°C; soak the prefabricated glass fiber honeycomb into the constant temperature reaction stock solution; After 30 minutes, take out the soaked glass fiber honeycomb, and the reaction stock solution between the honeycomb holes flows out with its own gravity, and at this time, a layer of reaction stock solution is evenly distributed on the surface of the glass fiber. will be like figure 1 The reactor is shown with its air inlet open and the upper lid kept closed, allowing carbon dioxide gas to be charged...

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Abstract

The invention provides a dehumidification reel which comprises a reel and a silicon dioxide-aluminum oxide gel film which is compounded on the surface of the reel. The invention further provides a preparation method of the dehumidification reel. The invention further provides a real dehumanization machine which adopts the reel which is the dehumidification reel provided by the technical scheme of the invention or the dehumidification reel which is prepared by using the method provided by the technical scheme of the invention. According to the dehumidification reel, silica sol is directly generated from a sodium silicate solution and a carbon dioxide gas, and reaction in the solution is prevented, so that non-uniform deposition effect of the silica sol caused by solution diffusion is prevented, and the dehumidification reel which is uniform in surface, compact and dense in structure and good in appearance is obtained. Meanwhile aluminum oxide sol which is subjected to concerted reaction with the silica sol is introduced into the dehumidification reel, so that the moisture adsorption property of a moisture adsorption medium is improved. In addition, the method provided by the invention is simple in step, the industrial degree is high, and the in-scale production requirement can be met.

Description

technical field [0001] The invention belongs to the technical field of dehumidification, and in particular relates to a dehumidification runner and a preparation method thereof. Background technique [0002] The rotary dehumidifier belongs to an important branch of the air conditioning field and is a typical representative of heating dehumidification. Its dehumidification methods include cooling dehumidification, compression dehumidification, solid adsorption dehumidification, liquid absorption dehumidification, adsorption rotor dehumidification and so on. [0003] In the rotary adsorption dehumidifier, the most important core component is the dehumidification rotor. The rotor is made of glass fiber and heat-resistant ceramic materials as the internal support carrier, and the dehumidification rotor can be obtained by compounding with hygroscopic medium materials. The desiccant rotor works as follows: when the treated air passes through the treatment area of ​​the rotor, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/28
Inventor 温诗渺姜英男庄婷婷于力崔洪伟白福臣
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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