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Formaldehyde absorbent and using method thereof

A formaldehyde absorbent and solvent technology, applied in the field of formaldehyde absorbent, can solve the problems of high removal cost, secondary pollution, and unsatisfactory removal effect, and achieve the effects of low cost, environmental protection, and health protection

Active Publication Date: 2015-03-25
NINGBO YUCHEN ENVIROCLEAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a formaldehyde absorbent and its use method to overcome the problems of high removal cost, unsatisfactory removal effect and easy secondary pollution in the prior art when removing harmful gas formaldehyde. defect

Method used

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  • Formaldehyde absorbent and using method thereof
  • Formaldehyde absorbent and using method thereof
  • Formaldehyde absorbent and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The product of the present invention has a very high ability to absorb formaldehyde. The mixture of amino acids and bases separated from the complete hydrolyzate of pine wood sawdust contains alanine (Ala), valine (Val), leucine (Leu), iso Leucine (Ile), Proline (Pro), Phenylalanine (Phe), Tryptophan (Trp), Methionine (Met), Glycine (Gly), Serine (Ser), Threonine (Thr) , cysteine ​​(Cys), tyrosine (Tyr), asparagine (Asn), glutamine (Gln), arginine (Arg), histidine (His), aspartic acid (Asp ), glutamic acid (Glu) and adenine (A), guanine (G), cytosine (C), thymine (T), uracil (U) and water-soluble inorganic salts (the constituent elements are silicon, oxygen , aluminum composition, or silicon, oxygen, sodium composition, or silicon, oxygen, potassium composition, or silicon, oxygen, aluminum, sodium composition, or silicon, oxygen, aluminum, potassium composition, or silicon, oxygen, Composition of potassium and sodium. Calcined at high temperature to remove the remaini...

Embodiment 2

[0058] The product of the present invention is a formaldehyde absorbent (the inventor is advised to use a unified term), use the 10% aqueous solution prepared in Example 1, and then adjust the pH=10.5 with sodium hydroxide, 100ml (containing 10 grams of formaldehyde scavenger). Based on the calculation that the formaldehyde absorption capacity is 200 times that of activated carbon, the amount of activated carbon is 2 kg. The formaldehyde absorption capacity is quantified by the change of formaldehyde concentration, and the test uses a completely sealed stainless steel box (1.0m X1.0m X1.0m) as the measurement space of formaldehyde. The aqueous solution product of the present invention is placed in one box, which is stirred by a magnetic rotor, and activated carbon is placed in the other. The initial formaldehyde concentration is 2ppm, the room temperature is controlled at 25 degrees, and the formaldehyde content in the air in the box is continuously sampled and monitored. The ...

Embodiment 3

[0064] The absorption capacity of formaldehyde absorbents varies with pH.

[0065] Take 50 grams of the mixture obtained from the above separation, use sodium hydroxide to adjust the pH value of the solution, and prepare pH=5, 6, 7, 8, 9, 10, 10.5, 11, 11.5, 12, 12.5, 13, 13.5, 14 , a 10% aqueous solution. The measurement method uses the method given in Example 1. The data of each pH is measured 3 times, and the average value of the 3 times is taken as the absorption capacity under the condition of this pH value. figure 2 shown.

[0066] Table 3 Example of absorption capacity data of formaldehyde absorbent

[0067] pH value

[0068] 12.5

[0069] The results show that the absorbing capacity of the absorbent is good at pH=9 and above.

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Abstract

Provided are a formaldehyde absorbent and a use method therefor. The chemical components of the formaldehyde absorbent in weight percentage are 0.1-99.9% of amino acids, and 99.9-0.1% of basic groups of DNAs and RNAs. The use method comprises the following steps: a. dissolving the formaldehyde absorbent in a solvent to form a solution, or dissolving the formaldehyde absorbent in a solvent and mixing same on a solid support; b. placing the resulting solution or solid support in a room containing formaldehyde; and c. the air containing formaldehyde is brought into contact and reacted with and absorbed by the solution or the solid support. The formaldehyde absorbent has a strong absorptivity, a low cost, and does not produce secondary pollution.

Description

technical field [0001] The invention relates to a formaldehyde absorbent and its application method; in particular, it relates to an absorbent with active absorption, high absorption capacity, and the ability to completely absorb and remove formaldehyde in the air. Background technique [0002] For the vast majority of people, most of the time in the life process is spent indoors, therefore, the indoor air quality has a very important impact on the health and life span of the human body. With the increasing population density, the shortage of natural resources is worsening, and the environmental pollution is aggravating. The concentration of volatile organic compounds (VOCs: Volatile Organic Compounds) in the air has risen sharply. They are one of the main reasons for the formation of PM2.5 particles. First, it seriously affects air quality and human health. These volatile organic compounds in the air include formaldehyde, acetaldehyde, various ketones, aromatic hydrocarbon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14A62D3/00
CPCA62D3/00B01D53/77B01D53/72A61L9/01B01D53/02B01D2252/20494B01D2257/708B01D2258/06B01D53/78B01D53/82B01D2251/70B01D2251/80B01D2253/20B01D2257/93B01D2259/4508A61L9/014
Inventor 朱作霖孙萌朱振吉顾康福孙善庆解统兴赵家保王文海
Owner NINGBO YUCHEN ENVIROCLEAN TECH
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