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Environment-friendly nanometer formaldehyde purification scavenger

A formaldehyde purification and scavenger technology, applied in the field of air purification, can solve the problems of inability to actively capture and quickly remove free formaldehyde, low crude oil extraction efficiency, waste of raw materials, etc., and achieve easy continuous and stable production, low production cost, and good purification effect. Effect

Inactive Publication Date: 2014-01-29
ANHUI PRINTING MECHANICAL & ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Currently commercially available natural plant-extracted formaldehyde scavengers are generally extracted with organic solvents and then added with a variety of chemical stabilizing reagents. Excessive chemical substances may cause potential harm to the human body after long-term contact with the human body. create pollution
At the same time, the existing products do not contain active groups, and formaldehyde can only be removed after long-term contact with free formaldehyde, and free formaldehyde cannot be actively captured and quickly removed
For example, Chinese patent CN1431258 discloses a method of using natural Lauraceae plant extracts as a formaldehyde scavenger. The natural lauraceae plant is subjected to a steam distillation extraction process to obtain volatile crude oil, and then the crude oil is made into different formulations to become a formaldehyde scavenger. The disadvantage of this method is that the extraction efficiency of crude oil by distillation extraction process is low, the waste of raw materials is large, and the waste water discharged after distillation is easy to cause water pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] An environment-friendly nano formaldehyde purification scavenger comprises the following components by weight percentage:

[0029] Natural plant (4:1 powder ratio of tea leaves and aloe vera) extract 2%

[0030] Nano-TiO 2 Sol 20%

[0031] Sodium dodecylbenzenesulfonate 2%

[0032] The rest is deionized water;

[0033] The nano-TiO 2 The gel concentration of the sol is 8×10 -4 mol / L, the dispersion medium is polyethylene glycol.

[0034] The preparation process is as follows:

[0035] First, when the supercritical extractor is controlled at a temperature of 30°C and a pressure of 7MP, the supercritical liquid CO 2 As a solvent, the natural plants are crushed and mixed according to the ratio, and then added to a supercritical extractor for extraction for 2 hours to separate natural amino acids;

[0036] Then, under the condition of stirring at normal temperature, the natural amino acid obtained from the above extraction was added into the deionized aqueous soluti...

Embodiment 2

[0038] The natural plant extract is an amino acid extracted by a supercritical method by taking the powder mixture of more than two kinds of tea leaves, aloe vera, spider plant and ivy as raw materials.

[0039] An environment-friendly nano formaldehyde purification scavenger comprises the following components by weight percentage:

[0040] Natural plant (the ratio of tea and Chlorophytum powder is 4:1) extract 2%

[0041] nano-TIO 2 Sol 20%

[0042] Sodium dodecylbenzenesulfonate 2%

[0043] The rest is deionized water;

[0044] The nano-TiO 2 The gel concentration of the sol is 8×10 -4 mol / L, the dispersion medium is polyethylene glycol.

[0045] The preparation process is as follows:

[0046] First, when the supercritical extractor is controlled at a temperature of 30°C and a pressure of 7MP, the supercritical liquid CO 2 As a solvent, the natural plants are crushed and mixed according to the ratio, and then added to a supercritical extractor for extraction for 2 ho...

Embodiment 3

[0049] The natural plant extract is an amino acid extracted by a supercritical method by taking the powder mixture of more than two kinds of tea leaves, aloe vera, spider plant and ivy as raw materials.

[0050] An environment-friendly nano formaldehyde purification scavenger comprises the following components by weight percentage:

[0051] Natural plant (the ratio of tea to aloe vera and Chlorophytum powder is 4:1:1) extract 2%

[0052] Nano-TiO 2 Sol 20%

[0053] Sodium dodecylbenzenesulfonate 2%

[0054] The rest is deionized water;

[0055] The nano-TIO 2 The gel concentration of the sol is 8×10 -4 mol / L, the dispersion medium is polyethylene glycol.

[0056] The preparation process is as follows:

[0057] First, when the supercritical extractor is controlled at a temperature of 30°C and a pressure of 7MP, the supercritical liquid CO 2 As a solvent, the natural plants are crushed and mixed according to the ratio, and then added to a supercritical extractor for extr...

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PUM

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Abstract

The invention discloses an environment-friendly nanometer formaldehyde purification scavenger which comprises the following components in percentage by weight: 1-3 percent of natural plant extract, 15-30 percent of nanometer TIO2 sol, 1-3 percent of sodium dodecyl benzene sulfonate and the balance of deionized water. The natural plant extract is amino acids which are extracted from powder mixture of more than two of tea, aloe, chlorophytum comosum and hedera helix through a supercritical method. The natural plants are used in the components of the environment-friendly nanometer formaldehyde purification scavenger; therefore, the percentage of other chemical materials is correspondingly reduced and secondary pollution caused by the air purifying agent can be reduced. The environment-friendly nanometer formaldehyde purification scavenger has strong absorption, good purifying effect and high clearance rate for harmful gas such as benzene series substances with weak polarity or non-polarity. When the environment-friendly nanometer formaldehyde purification scavenger is prepared, the production process is simple, and the production cost is low.

Description

technical field [0001] The invention belongs to the technical field of air purification, and in particular relates to an environment-friendly nano formaldehyde purification scavenger. Background technique [0002] With the improvement of people's living standards, the types and quantities of building decoration materials and household chemicals are increasing. These materials or products will release harmful chemical components indoors, causing serious indoor air pollution and bringing great harm to human health. hazards. Therefore, how to eliminate the pollution of indoor air has been paid more and more attention by people. [0003] Air purifiers refer to products that use the adsorption and decomposition principles of natural substances and are processed by modern science and technology to eliminate harmful gases in the air and remove various odors. [0004] Currently commercially available natural plant-extracted formaldehyde scavengers are generally extracted with orga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/02
Inventor 姚旻
Owner ANHUI PRINTING MECHANICAL & ELECTRICAL
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