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A kind of preparation method of formaldehyde purifying material

A formaldehyde purification, organic solvent technology, applied in chemical instruments and methods, separation methods, other chemical processes and other directions, can solve the problems of large consumption of chemical reagents, complex production process, complex extraction process, etc., to improve interface fastness, reduce Effect of surface tension, excellent adsorption performance

Active Publication Date: 2021-12-07
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can improve the efficiency of formaldehyde purification, its disadvantages are that the extraction process of its raw material pig small intestine and Coprinus comatus biological stock solution is complicated, and the cost of rose essential oil is high, making it difficult to popularize and use
Although this method does have the effect of improving the purification of formaldehyde, its production process is complicated and consumes a large amount of chemical reagents, which is not conducive to the promotion of the industrial field

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0027] A preparation method of formaldehyde purification material, the specific steps of the preparation process are as follows:

[0028] a preparation of washing liquid

[0029] Mix the alcoholic organic solvent and water, stir evenly, and configure it as a washing liquid, wherein the bath ratio of the washing liquid is 1:40 to 1:50, and the volume ratio of the alcoholic organic solvent to water in the washing liquid is 10%:90 %~25%: 75%, the stirring speed is 100~250r / min, and the stirring time is 15~30min. The alcoholic organic solvent is ethanol or isopropanol.

[0030] b Pretreatment of rush fibers

[0031] Immerse the rush fiber in the washing solution prepared in step a, and dry it after mechanical stirring, wherein the stirring speed is 100-250r / min, the stirring time is 15-20min, the drying temperature is 30°C-60°C, and the drying temperature is 30-60°C. The drying time is 20min to 40min.

[0032] c preparation of activated carbon dispersion

[0033] Place activa...

Embodiment 1

[0038]According to the above process steps: mix 2mL of ethanol and 18mL of water, stir at 100r / min for 30min, then put 0.5g of rush in the washing liquid for washing, stir at 100r / min for 30min, and bake at 30°C for 40min to obtain the washed rush , put 0.1g of 10-mesh activated carbon into 89.91g of water and 9.99g of N,N-dimethylacetamide mixture, 20°C, 100r / min stirring for 60min to obtain activated carbon dispersion, put the washed rush fiber in activated carbon to disperse solution, immerse in 20°C, 20kHz ultrasonic for 1h, and bake at 30°C for 6h to obtain activated carbon modified rush fiber.

Embodiment 2

[0040] According to the above process steps: mix 5mL of ethanol and 15mL of water, stir at 150r / min for 25min, then put 0.5g of rush in the washing solution for washing, stir at 150r / min for 25min, and bake at 40°C for 35min to obtain the washed rush Put 10g of 10-mesh activated carbon into 45g of water and 45g of N, N-dimethylacetamide mixture, stir at 25°C and 200r / min for 50min to obtain an activated carbon dispersion, place the washed rush fibers in the activated carbon dispersion, Immerse in 25°C, 20kHz ultrasonic for 1h, and bake at 40°C for 5h to obtain activated carbon modified rush fiber.

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Abstract

The invention relates to a preparation method of a formaldehyde purification material, belonging to the technical field of composite material preparation. The invention adopts activated carbon to modify the rush fiber, and the activated carbon dispersion system formed by mixing the organic solvent and the activated carbon impregnates the washed rush fiber to obtain the modified rush fiber. The invention utilizes the three-dimensional network pore structure of the rush to adsorb the activated carbon, increases the loading capacity of the rush fiber to the activated carbon, and combines the high adsorption capacity of the rush to effectively improve the problem of long purification time of the traditional activated carbon. The activated carbon-modified rush fiber of the present invention has a simple production process, a short production process, reduces environmental pollution, is safe, energy-saving, economical and environmentally friendly, and has significant social and economic benefits.

Description

technical field [0001] The invention relates to a preparation method of a formaldehyde purification material, belonging to the technical field of composite material preparation. Background technique [0002] With the improvement of living standards, a large number of building materials are invested in interior decoration, resulting in a series of volatile organic gases, which seriously endanger the indoor air quality. As a typical volatile organic gas, formaldehyde not only damages the environment, but also causes cancer after excessive intake by the human body. Acute formaldehyde poisoning can cause tears, cough, dyspnea and even death, while chronic poisoning can cause weakness, headache, decreased immunity, memory loss, various tumors, and frequent chronic diseases, seriously affecting the safety of humans and other creatures. Therefore, the processing of formaldehyde has been widely concerned by people day by day. [0003] Adsorption is a typical technology for formald...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30B01D53/02
CPCB01D53/02B01D2257/70B01J20/20B01J20/24
Inventor 徐卫林周思婕夏良君付专刘斯年
Owner WUHAN TEXTILE UNIV
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