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Adsorbent for adsorbing formaldehyde indoors and in automobiles and preparation method thereof

A technology for adsorbing formaldehyde and adsorbent, applied in the field of adsorbent and its preparation, can solve the problems of low adsorption capacity of polar substances, insignificant adsorption effect of formaldehyde, inability to purify indoor air, etc., and achieves strong adsorption capacity for formaldehyde and high adsorption rate The effect of fast and large saturated adsorption capacity

Active Publication Date: 2018-06-15
JIANGSU AIER ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, most of the purification technologies for formaldehyde pollution in the air use activated carbon as an adsorbent, which has a large specific surface area and strong adsorption capacity. However, since activated carbon is a non-polar adsorbent, it has a strong adsorption capacity for non-polar substances. The adsorption capacity of sexual substances is small, so the adsorption effect on formaldehyde is not obvious, and the indoor air cannot meet the purification requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Mixing of raw materials: evenly put aluminum slag powder and alumina powder into the mixer at a ratio of 1:2, and stir and mix in the mixing mixer at a speed of 30r / min for 2h;

[0026] (2) Preparation of seeds: put 50kg of the mixed powder material obtained in step (1) into the ball cylinder, and spray 16kg of water mist to form 0.3mm-0.5mm seeds;

[0027] (3) Granulation and screening: adopt dry forming process, and use disc granulator to complete granulation; put the seeds with a particle size of 0.3mm-0.5mm obtained in step (2) into the granulator, and continuously add The mixed powder material is 200kg, and sprayed with 60kg of water mist; when the seeds grow to 3.0-5.0mm, the pellets roll out from the edge of the granulator, and are transported to the vibrating screen by a conveyor belt for screening. The diameter of the screening pellets is 3.0-5.0mm;

[0028] (4) Polishing: Put the material that meets the particle size requirements after screening in step (...

Embodiment 2

[0037] The preparation method is the same as in Example 1, except that 10 kg of triethylenetetramine and 1 kg of sodium hydroxide are dissolved in 20 kg of water to prepare a mixed solution.

[0038] Experimental results: the experimental conditions are as in Example 1, the saturated adsorption capacity is 65 mg / g, and the formaldehyde removal rate is 100%.

Embodiment 3

[0040] The preparation method is the same as in Example 1, except that 15kg of triethylenetetramine and 1kg of sodium hydroxide are dissolved in 20kg of water to prepare a mixed solution.

[0041] Experimental results: The experimental conditions are as in Example 1, the saturated adsorption capacity is 55 mg / g, and the formaldehyde removal rate is 99%.

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Abstract

The invention relates to an adsorbent used for adsorbing formaldehyde in rooms and automobiles and a preparation method thereof and belongs to the technical field of air purification. According to the invention, aluminum slag is used as a carrier, and a mixed solution of triethylene tetramine and sodium hydroxide is sprayed on the carrier; the adsorbent takes the shape of a white ball, the carrier comprises aluminum slag powder and alumina powder with the mass ratio of (1-2):(1-3) and the adsorbent used for adsorbing formaldehyde in rooms and automobiles is obtained through mixing, preparing seeds, pelleting, screening, polishing, carrying out standing, drying, preparing a citric acid solution and spraying. Raw materials used in the preparation process are derived from aluminum slag generated from automobile hub production, the cost is low, the purpose of controlling hazardous substances by waste is realized and an important effect on environment protection is realized.

Description

technical field [0001] The invention relates to an adsorbent for adsorbing formaldehyde indoors and in automobiles and a preparation method thereof, belonging to the technical field of air purification. Background technique [0002] Indoor environmental quality will directly affect human health. According to relevant statistics, nearly half of the world's people live in polluted indoor air. Indoor environmental pollution has caused 35.7% of respiratory diseases, 22% of chronic lung diseases, and 15% of tracheitis, bronchitis and lung cancer. According to the survey by relevant international organizations, the air in more than 30% of the newly built or reconstructed buildings in the world contains harmful substances that are harmful to people's health. Indoor air pollution has been listed as one of the five environmental factors that have the greatest impact on public health. 1. Among them, formaldehyde is a typical pollutant. [0003] Formaldehyde is a colorless, soluble, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/30B01D53/02
Inventor 韩峰
Owner JIANGSU AIER ENVIRONMENTAL PROTECTION TECH CO LTD
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