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Hygroscopic agent and manufacturing method and application thereof

A manufacturing method and technology for a hygroscopic agent, applied in the field of hygroscopic agent and its manufacturing, can solve the problems of reducing indoor air quality, harming human health, poor selectivity, etc., and achieving the effects of high moisture absorption selectivity, low adsorption capacity, and large water absorption

Inactive Publication Date: 2011-07-06
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The silica gel series and the alumina series have poor selectivity, causing co-adsorption problems in the process of dehumidification and humidification
While absorbing moisture, it also adsorbs other odorous components in the room, which causes the odorous components to be released into the room during the regeneration of the hygroscopic agent, which has the disadvantages of greatly reducing indoor air quality and damaging human health.

Method used

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  • Hygroscopic agent and manufacturing method and application thereof
  • Hygroscopic agent and manufacturing method and application thereof
  • Hygroscopic agent and manufacturing method and application thereof

Examples

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Effect test

Embodiment 1

[0033] By using type B silica gel as the hygroscopic inorganic porous material and using sodium polystyrene sulfonate as the polystyrene sulfonate, a hygroscopic agent in which sodium polystyrene sulfonate was attached to the surface of type B silica gel (hereinafter, called B-PS). The B-type silica gel surface includes B-type silica gel particle surface and pore wall surface. The manufacturing method of B-PS is as follows:

[0034] First, make activated B-type silica gel.

[0035]Add 100 ml of sodium hydroxide aqueous solution (0.5mol / L) to 10 g of B-type silica gel (Sylysia 550 manufactured by Fuji Silicon Chemical Co., Ltd. (Fuji シリシァ Chemical Co., Ltd.)) to prepare a suspension containing B-type silica gel, and then contain The suspension of type B silica gel was stirred at room temperature for 30 minutes. Next, type B silica gel is filtered from the suspension containing type B silica gel and washed multiple times (for example, 3 times). Then, 100 ml of hydrochloric a...

Embodiment 2

[0044] Using B-type silica gel as the hygroscopic inorganic porous material, a hygroscopic agent (abbreviated as B-PVA-MA) obtained by attaching polyvinyl alcohol cross-linked by hydroxysuccinic acid to the surface of the B-type silica gel was prepared. In addition, the B-type silica gel surface mentioned here refers to the particle surface and the pore wall surface of the B-type silica gel.

[0045] The production method of B-PVA-MA: In the first step, 3 g of polyvinyl alcohol (polyvinyl alcohol 2000 (polymerization degree about 2000) manufactured by Kishida Chemical Co., Ltd.) was added to 97 ml of distilled water, and stirred at 70° C. After 1 hour, an aqueous solution of polyvinyl alcohol in which polyvinyl alcohol was completely dissolved was prepared. Next, 3 g of hydroxysuccinic acid (DL-hydroxysuccinic acid manufactured by Kishida Chemical Co., Ltd.) and 3 g of B-type silica gel (silica gel S550 manufactured by Fuji Silicon Chemical Co., Ltd.) were added to the obtaine...

Embodiment 3

[0054] By using C-type silica gel as the hygroscopic inorganic porous material and polystyrene sulfonate as the polystyrene sulfonate, a hygroscopic agent in which polystyrene sulfonate was attached to the surface of C-type silica gel (hereinafter, called C-PS). The surface of the C-type silica gel includes the particle surface and the pore wall surface of the C-type silica gel. The manufacturing method of C-PS is as follows:

[0055] 10 g of C-type silica gel (Fuji Silicon Chemical Co., Ltd. (Fuji Silicon Chemical Co., Ltd.) ) aqueous solution, make a suspension containing silica gel C, and stir the suspension containing silica gel C at room temperature for 6 hours (the first step). Then, filter silica gel C from the suspension containing silica gel C and wash , and then lyophilized to obtain C-PS (hygroscopic agent) with strong water selectivity.

[0056] In Table 3 are shown the results of the adsorption performance experiments of the obtained C-PS. In addition, the sat...

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Abstract

The invention discloses hygroscopic agent, and the manufacturing method and application thereof. The hygroscopic agent comprises hygroscopic inorganic porous material and poly sodium styrenesulfonate or polyvinyl alcohol that is crosslinked by hydroxy succinic acid, wherein either of poly sodium styrenesulfonate and polyvinyl alcohol that is crosslinked by hydroxy succinic acid is attached on thesurface of hygroscopic inorganic porous material; the hygroscopic inorganic porous material adopts silica gel, the average pore size of which is more than 5 nm; and the mass ratio of hydroxy succinicacid and polyvinyl alcohol in polyvinyl alcohol that is crosslinked by hydroxy succinic acid is 1:10 to 1:4. The hygroscopic agent has characteristics of high water absorbing capacity, hygroscopic selectivity and moisture absorption capacity, and low adsorptive capacity on peculiar smell ingredients such as toluene, ethanal and the like. Polystyrene sulphonate or polyvinyl alcohol that is crosslinked by hydroxy succinic acid, which is attached on the surface of inorganic porous material, can be obtained through simple stirring, filtering and drying. The hygroscopic agent can be used on a moisture adjustment device, a humidfying device and an air interchanger.

Description

technical field [0001] The invention relates to a hygroscopic agent and a manufacturing method thereof. The present invention also relates to various devices prepared using the hygroscopic agent. Background technique [0002] In today's situation of energy shortage and increasingly serious environmental pollution, air-conditioning dehumidification system has unique advantages such as no pollution and low-quality energy, so it has become an air treatment system that is being developed at home and abroad. The air-conditioning dehumidification system is a process of using a hygroscopic agent to absorb and desorb moisture in the air, and its core is the hygroscopic agent. Therefore, the development of high-efficiency moisture absorbents for air-conditioning dehumidification systems is the key to accelerating the commercialization of air-conditioning dehumidification systems and improving their competitiveness with traditional air-conditioning systems. [0003] At present, the ...

Claims

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Application Information

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IPC IPC(8): B01D53/28B01J20/10B01J20/28B01J20/30F24F3/14F24F6/00
Inventor 裴丽霞张立志神野亮木户照雄
Owner SOUTH CHINA UNIV OF TECH
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