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Preparation method of composite dehumidifying agent

A dehumidifier and catalyst technology, which is applied in the field of the preparation of composite dehumidifiers, can solve the problems of corrosion of surrounding items, liquid corrosion, and easily broken liquid of the dehumidifier, so as to prevent environmental corrosion, improve the degree of bonding, and increase the efficiency of moisture absorption. Effect

Inactive Publication Date: 2018-01-05
王金华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the problem that the current desiccant is easy to break and produce liquid after absorbing a large amount of water, and the produced liquid is corrosive, which will cause corrosion of surrounding objects, the present invention provides a preparation of a composite desiccant method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0017] A preparation method of a composite desiccant, the preparation method comprising the steps of:

[0018] (1) Put the vermiculite into the calciner, calcinate at 1000-1200°C for 50 minutes, pulverize, pass through a 200-mesh sieve, collect the sieved particles, and sieve the sieved particles according to the mass ratio of 8-10:2:1. , Triethyl phosphate and cetyltrimethylammonium bromide are put into a ball mill, and ball milled at 800r / min for 30-40min, and the ball milled material is collected;

[0019] (2) Put the ball mill at -10~-5℃ for freezing treatment for 1~2h, then put it into 40~50℃1.6mol / L calcium chloride solution with 6~8 times the mass of the ball mill and soak for 45~55min, Freeze-drying and collecting the dry matter;

[0020] (3) In parts by weight, take 80-85 parts of water, 45-50 parts of xylene, 32-36 parts of sodium silicate, 23-27 parts of dry matter, 13-16 parts of triethylaminosilane, 11- 15 parts of hexamethyldisilane, 10-19 parts of ammonium chl...

example 1

[0023] The choice of surfactant is lauryl dimethyl betaine.

[0024] The choice of catalyst is 1.1mol / L potassium hydroxide solution.

[0025] A preparation method of a composite desiccant, the preparation method comprising the steps of:

[0026] (1) Take vermiculite and put it into a calciner, calcinate at 1150°C for 50 minutes, pulverize, pass through a 200-mesh sieve, and collect the sieved particles. The sieved particles, triethyl phosphate The ester and cetyltrimethylammonium bromide were put into a ball mill, and ball milled at 800r / min for 35min, and the ball mill was collected;

[0027] (2) Place the ball mill at -8°C for 1.5 hours of freezing treatment, then soak in 1.6mol / L calcium chloride solution at 45°C that is 7 times the mass of the ball mill, soak for 50 minutes, freeze-dry, and collect the dry matter;

[0028] (3) In parts by weight, take 83 parts of water, 48 parts of xylene, 34 parts of sodium silicate, 25 parts of dry matter, 15 parts of triethylaminosil...

example 2

[0031] The surfactant of choice was dodecyl hydroxypropyl phosphate betaine.

[0032] The choice of catalyst is 1.1mol / L potassium hydroxide solution.

[0033] A preparation method of a composite desiccant, the preparation method comprising the steps of:

[0034] (1) Take vermiculite and put it into a calciner, calcinate at 1200°C for 50 minutes, crush it, pass through a 200-mesh sieve, and collect the sieved particles. The sieved particles, triethyl phosphate The ester and cetyltrimethylammonium bromide were put into a ball mill, and ball milled at 800r / min for 40min to collect the ball mill;

[0035] (2) Place the ball mill at -5°C for freezing treatment for 2 hours, then soak in 50°C 1.6mol / L calcium chloride solution 8 times the mass of the ball mill for 55 minutes, freeze-dry, and collect the dry matter;

[0036] (3) In parts by weight, take 85 parts of water, 50 parts of xylene, 36 parts of sodium silicate, 27 parts of dry matter, 16 parts of triethylaminosilane, 15 pa...

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Abstract

The invention belongs to the field of air humidity regulation and specifically relates to a preparation method of a composite dehumidifying agent. According to the preparation method, through vermiculite modification, the adsorption ability and porosity of vermiculite are improved, and the adsorption capacity is increased; meanwhile, after low-temperature treatment, the vermiculite is soaked in acalcium chloride solution so as to increase the adsorption capacity of calcium chloride; then, through freeze drying, the loss of calcium chloride is prevented; after that, with sodium silicate as a raw material, porous silica gel is prepared to wrap the modified vermiculite; the porosity is increased by sodium bicarbonate; organic silicon monomers are mixed in the wrapping process; under the action of a catalyst, the organic silicon monomers are polymerized to form a net structure in the pores of macroporous resin, thereby improving the moisture absorption efficiency; moreover, the combination degree of the silica gel and the modified vermiculite is increased, and the outflow of calcium chloride can be effectively inhibited; furthermore, the chloride ions released by the calcium chloridein water are adsorbed by the modified vermiculite and silica gel, thus environmental corrosion is prevented, and the moisture absorption capacity is increased.

Description

technical field [0001] The invention belongs to the field of air humidity adjustment, and in particular relates to a preparation method of a composite desiccant. Background technique [0002] Dehumidifiers use solid or liquid materials with dehumidification properties to directly contact the air to achieve air dehumidification. Because it is easy to achieve isothermal dehumidification, the irreversible loss is small, and the thermodynamic perfection is high; lower-grade heat energy can be used as the driving energy; there are no large moving parts, the structure is simple, and it is easy to miniaturize; it can remove harmful dust, bacteria, etc. in the air It has been widely used for its advantages of improving air quality and improving air quality. Air humidity is an important environmental parameter that is closely related to people's life and production. Humidity is of great significance to human comfort, product production process, product quality and product shelf life...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/28B01J20/30B01J20/26B01J20/12B01J20/04
Inventor 王金华刘芳刘沁
Owner 王金华
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