Formaldehyde scavenging agent prepared from corn protein and preparation method thereof

A formaldehyde scavenger and zein technology are applied in separation methods, chemical instruments and methods, and separation of dispersed particles. It can solve problems such as low formaldehyde removal rate, furniture wear, and sealant loss of function, and achieve air pollution. Use without secondary pollution, and adapt to a wide range of effects

Inactive Publication Date: 2017-09-15
张园
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In principle, the sealing agent blocks the source of formaldehyde release, and it should be able to completely eliminate the pollution route of formaldehyde. , after a period of time, the sealant applied at the beginning will lose its original effect
However, the use of formaldehyde remover, capture agent and other methods has the problem of elimination effect. Although the pollution can be reduced to a certain extent, because the pollution of the indoor environment is affected by many factors such as pollution degree, temperature, and air circulation, the elimination reaction is often Difficult to carry out thoroughly, so it is also difficult to achieve the ideal effect of eliminating formaldehyde
Some formaldehyde eliminators themselves are of poor quality, not only the elimination effect is not obvious, not only can not eliminate formaldehyde, but also may cause secondary pollution of indoor air
Amino acid formaldehyde scavengers mainly use amino acid and formaldehyde to react to form polymer compounds, but they have the disadvantages of insufficient reaction and low formaldehyde scavenging rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A preparation method of zein formaldehyde scavenger comprises the following steps:

[0039] (1) Enzymolysis: Take 100 kg of zein raw material, add 300 kg of water, stir evenly to obtain a zein suspension, add 2 kg of serine protease, adjust the pH=2 of the zein suspension, and then heat it to 40°C, Under enzymatic hydrolysis for 5 hours, the enzymatic hydrolyzed zein suspension was obtained; the specification of serine protease: 50000u / g.

[0040] (2) Oxidation: get the zein suspension after enzymolysis in step (1), add 1 kg of sodium hypochlorite to oxidize for 5 hours, and obtain the oxidized zein suspension;

[0041] (3) Decolorization: take the oxidized zein suspension in step (2), add 1 kg of activated carbon, heat to 95° C., and decolorize at 95° C. for 1.5 hours to obtain the decolorized zein suspension;

[0042] (4) Filtration: Take the decolorized zein suspension in step (3), use a plate and frame filter press to keep the decolorized zein suspension at a tempe...

Embodiment 2

[0045] A preparation method of zein formaldehyde scavenger comprises the following steps:

[0046] (1) Enzymolysis: Take 100 kg of zein raw material, add 300 kg of water, stir evenly to obtain a zein suspension, add 2 kg of serine protease, adjust the pH=2 of the zein suspension, and then heat it to 40°C, Under enzymatic hydrolysis for 5 hours, the enzymatic hydrolyzed zein suspension was obtained; the specification of serine protease: 100000u / g.

[0047] (2) Oxidation: get the zein suspension after enzymolysis in step (1), add 3kg sodium hypochlorite to oxidize for 4h, obtain the oxidized zein suspension;

[0048] (3) Decolorization: take the oxidized zein suspension in step (2), add 3 kg of activated carbon, heat to 90° C., and decolorize at 90° C. for 2.5 hours to obtain the decolorized zein suspension;

[0049] (4) Filtration: Take the decolorized zein suspension in step (3), use a plate and frame filter press to keep the decolorized zein suspension at a temperature of 90...

Embodiment 3

[0054] A preparation method of zein formaldehyde scavenger comprises the following steps:

[0055] (1) Enzymolysis: Take 100 kg of zein raw material, add 300 kg of water, stir evenly to obtain a zein suspension, add 2 kg of serine protease, adjust the pH=2 of the zein suspension, and then heat it to 40°C, Under enzymatic hydrolysis for 4 hours, the enzymatic hydrolyzed zein suspension was obtained; the specification of serine protease: 50000u / g.

[0056] (2) Oxidation: get the zein suspension after enzymolysis in step (1), add 2kg of sodium hypochlorite to oxidize for 3h, obtain the oxidized zein suspension;

[0057] (3) Decolorization: take the oxidized zein suspension in step (2), add 2 kg of activated carbon, heat to 80° C., and decolorize at 80° C. for 2 hours to obtain the decolorized zein suspension;

[0058] (4) Filtration: Take the decolorized zein suspension in step (3), use a plate and frame filter press to keep the decolorized zein suspension at a temperature of 93...

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PUM

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Abstract

The invention relates to a formaldehyde scavenging agent prepared from corn protein and a preparation method thereof and belongs to the technical field of formaldehyde scavenging agents. The preparation method comprises the following steps: with corn protein as a raw material, adding water the mass of which is 3-4 times that of the corn protein, and uniformly stirring; adding acid proteinase the mass of which is 2%-5% of that of the corn protein for performing enzymolysis, and adding an oxidizing agent the mass of which is 1%-3% of that of the corn protein for oxidizing after enzymolysis; adding a discoloring agent the mass of which is 1%-3% of that of the corn protein, and heating to 80-95 DEG C for discoloring; filtering at the temperature of 90-95 DEG C after discoloring, thereby obtaining filtrate, namely a corn protein solution; and cooling, crystallizing, and drying, thereby obtaining the formaldehyde scavenging agent. The formaldehyde scavenging agent prepared by the method is capable of effectively scavenging formaldehyde and is environmental-friendly, wide in application range, low in preparation cost and easy and convenient to use, and is free of secondary pollution.

Description

technical field [0001] The invention belongs to the technical field of formaldehyde scavenger, and in particular relates to a corn protein formaldehyde scavenger and a preparation method thereof. Background technique [0002] In recent years, with the improvement of people's living standards, people's requirements for interior decoration standards have become higher and higher, and home decoration has become increasingly modernized. However, the problem of indoor air chemical pollution caused by materials and decoration has followed. These chemicals have seriously affected the health of residents, and have attracted great attention from countries around the world and relevant domestic departments. Among many pollution sources, formaldehyde is listed as the number one pollutant due to its large amount, strong toxicity, strong absorption and wide range. [0003] Formaldehyde is a volatile organic compound with high toxicity. The chemical formula of formaldehyde is HCHO, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/84B01D53/72
CPCB01D53/72B01D53/84B01D2255/804Y02A50/20
Inventor 张园
Owner 张园
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