CN104841259A - Indoor formaldehyde purification method - Google Patents
Indoor formaldehyde purification method Download PDFInfo
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- CN104841259A CN104841259A CN201510260198.1A CN201510260198A CN104841259A CN 104841259 A CN104841259 A CN 104841259A CN 201510260198 A CN201510260198 A CN 201510260198A CN 104841259 A CN104841259 A CN 104841259A
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Abstract
The invention discloses an indoor formaldehyde purification method. The indoor formaldehyde purification method comprises the following steps: (1) dispersedly putting an indoor formaldehyde scavenger in the room, closing doors and windows and sealing for 3-7 days, wherein the consumption of the indoor formaldehyde scavenger is 10-30g/m<2>; and (2) opening the doors and the windows and ventilating for 1-3 days. The indoor formaldehyde scavenger comprises the following raw materials in parts by weight: 4-8 parts of bentonite, 0.5-1.5 parts of tea polyphenol, 1-3 parts of amino acid, 80-90 parts of sodium sulfate-hydrogen peroxide-sodium chloride adduct, 200 parts of water and 1-5 parts of dodecyl glucoside. The indoor formaldehyde purification method is healthy and environmentally-friendly, and can be used for effectively removing formaldehyde in the indoor air.
Description
Technical field
The present invention relates to a kind of method of purifying indoor formaldehyde.
Background technology
Along with growth in the living standard, and the continuous reinforcement of health perception and environmental consciousness, people are to oneself indoor environment growing interest.People use the various new materials of such as wood-based plate and so on to carry out interior decoration mostly, but the wood-based panel products such as the glued board be pressed into by urea-formaldehyde resin adhesive, phenolic resin glue, melamine-formaldehyde resin adhesive etc., particieboard, density board, fine workmanship's plate, while beautifying room, become again the main source of indoor formaldehyde.Producing and using the free formaldehyde discharged in wood-based plate, pollute living environment, the health of infringement people.The reason of wood-based plate release formaldehyde is roughly as follows: remaining unreacted free formaldehyde during (1) resins synthesis; (2), during resins synthesis, participated in reacting the formaldehyde generating unstable group, can discharge again in hot pressing; (3) when resins synthesis, be adsorbed on formaldehyde molecule protonated around colloidal particle, also can discharge under electrolytical effect.
Formaldehyde can change methyl alcohol in human body, therefore can cause more weak anesthetic effect, has impact to optic nerve.Formaldehyde can cause the change of enzymatic activity in central nervous system, body and endocrine, immune change, the formaldehyde of high concentration is all toxic for nervous system, immune system, liver, and exciting eye conjunctiva, respiratory mucosa and producing are shed tears, runny nose, the conjunctivitis that causes, sphagitis, asthma, bronchitis and allergic disease.US Occupational Safety in 1981 and health research institute are using formaldehyde as suspect carcinogen, and many animals shows that formaldehyde has clear and definite carcinogenicity.Formaldehyde is long for incubation period, and artificial board release period is 3-5, and by formaldehyde-caused occupational asthma, its incubation period is several weeks to the several years.
For above-mentioned formaldehyde pollution, indoor formaldehyde scavenger product in the market, the usual processing mode according to physical absorption or chemisorbed eliminates removing residue formaldehyde, but can there is the technological deficiencies such as formation secondary pollution, toxicity are comparatively large, formaldehyde removal efficiency is low, action time is short.
House formaldehyde after usual finishing all can exceed standard.
Formaldehyde Pollution of Indoor Air is mainly derived from the artificial board such as glued board, pin chips, particieboard that finishing uses, and comes from the materials such as ornamental wallpaper, wall covering fabric and paint, and has used the furniture that defective sheet material is made.
Therefore, how to carry out purifying indoor formaldehyde and become extremely important.
Summary of the invention
The object of the invention is in view of the foregoing defects the prior art has, technical problem to be solved is to provide a kind of method of purifying indoor formaldehyde.
A method for purifying indoor formaldehyde, comprises the steps:
(1) indoor formaldehyde scavenger dispersion is positioned over indoor, close the door the airtight 3-7 days of window, and the consumption of wherein said indoor formaldehyde scavenger is 10-30 gram/m;
(2) window ventilation 1-3 days.
Preferably,
Described indoor formaldehyde scavenger, is made up of the raw material of following weight parts: bentonite 4 ~ 8 parts, Tea Polyphenols 0.5 ~ 1.5 part, amino acid/11 ~ 3 part, adduct sodium sulphate-hydrogen peroxide-sodium chloride 80 ~ 90 parts, 200 parts, water, lauryl glucosyl 1 ~ 5 part.
Bentonite, CAS 1302-78-9 take montmorillonite as the nonmetallic minerals of main mineral constituent.Bentonite has strong hygroscopicity and dilatancy, adsorbable 8 ~ 15 times to the water yield of own vol, volumetric expansion can reach several times to 30 times; Can be dispersed into as a form of gel and suspension in aqueous medium, this medium solution has certain viscosity, thixotropy and lubricity; There is stronger cation exchange capacity (CEC); Have certain adsorption capacity to various gas, liquid, organic substance, maximal absorptive capacity can reach 5 times to the weight of self; The admixture of it and water, mud or fine sand has plasticity and cohesiveness.
Tea Polyphenols, CAS 84650-60-2, have another name called antioxygen spirit, WEIDUOFEN, the spirit of anti-Kazakhstan, it is polyhydroxyl compounds contained in tealeaves, be called for short TP, main chemical compositions is the complex of catechin (flavanol compound), flavones and the compound such as flavonols, anthocyan, phenolic acid and depside, polymerization phenols.Wherein catechin compounds is the bulk composition of Tea Polyphenols, accounts for 65% ~ 80% of Tea Polyphenols total amount.
Amino acid, contains the common name of a class organic compound of amino and carboxyl.The basic composition unit of biological function macro-molecular protein is the base substance forming Animal nutrition desired protein.Preferably, described amino acid is one in alanine, tryptophan, ASPARTIC ACID, histidine, lysine, glutamic acid, methionine, proline, threonine, leucine, arginine, interior propylhomoserin, glycine and L-homoserine or its mixture.Optimally, described amino acid is the mixture of ASPARTIC ACID and L-homoserine, and wherein the mass ratio of ASPARTIC ACID and L-homoserine is 2:1-1:2.
Adduct sodium sulphate-hydrogen peroxide-sodium chloride, also known as Solid hydrogen peroxide, have the effects such as bleaching, sterilization, sterilization, and oxidation susceptibility is gentle, nontoxic, nuisanceless.As a kind of neutrality, nontoxic washing assisant, than alkaline peroxide as SODIUM PERCARBONATE, sodium perborate, peroxophosphoric acid sodium etc. demonstrate more superiority, its production cost is lower, store and transport convenient stable, oxidation susceptibility more gentle, the result of use of safety and environmental-protecting performance better.Its preparation technology can be: added in hydrogenperoxide steam generator by sodium chloride, then add anhydrous sodium sulfate, and stir, decompress filter, vacuum drying, obtains adduct sodium sulphate-hydrogen peroxide-sodium chloride.
Lauryl glucosyl, No. CAS: 110615-47-9.Be the one of new non-ionic surfactants APG (APG), have the characteristic of conventional nonionic and anion surfactant concurrently.
This area conventional method can be adopted to prepare indoor formaldehyde scavenger of the present invention, such as bentonite, Tea Polyphenols, amino acid, adduct sodium sulphate-hydrogen peroxide-sodium chloride, water and lauryl glucosyl can be mixed, stir and can obtain indoor formaldehyde scavenger of the present invention.
The method of purifying indoor formaldehyde of the present invention, health environment-friendly, effectively can remove the formaldehyde in room air.
Detailed description of the invention
Below by embodiment, the present invention is specifically described.
The preparation of adduct sodium sulphate-hydrogen peroxide-sodium chloride:
46 kilograms of sodium chloride are added in 200L35wt% hydrogenperoxide steam generator, keeps temperature 25 DEG C, under constantly stirring, slowly add 60 kilograms of anhydrous sodium sulfates, constant temperature stirring reaction 30min.Decompress filter, vacuum drying.Obtain 64 kilograms of product adduct sodium sulphate-hydrogen peroxide-sodium chlorides, wherein content of hydrogen peroxide 9.3wt%.
Embodiment 1-3
By table 1 corresponding data, by bentonite, Tea Polyphenols, amino acid, above-mentioned adduct sodium sulphate-hydrogen peroxide-sodium chloride, water and the lauryl glucosyl mixing preparing gained, stir and can obtain the indoor formaldehyde scavenger of embodiments of the invention 1-3.
Table 1: indoor formaldehyde scavenger formula table unit: gram
| Embodiment 1 | Embodiment 2 | Embodiment 3 | |
| Bentonite | 6 | 6 | 6 |
| Tea Polyphenols | 1 | 1 | 1 |
| ASPARTIC ACID (CAS 56-84-8) | 2 | / | 1 |
| L-homoserine (CAS 672-15-1) | / | 2 | 1 |
| Adduct sodium sulphate-hydrogen peroxide-sodium chloride | 85 | 85 | 85 |
| Water | 200 | 200 | 200 |
| Lauryl glucosyl | 3 | 3 | 3 |
Test case 1
Respectively indoor formaldehyde scavenger corresponding for 3 grams of embodiment 1-3 is evenly brushed at 0.20m
2blank sheet of paper on, put into the vacuum desiccator of 5L, be filled with containing 10mg/m after vacuumizing
3air to 1 atmospheric pressure of formaldehyde.After 24h, get 0.5L gas sample, measure the change of wherein concentration of formaldehyde.The method that concentration of formaldehyde is specified by GB-13197-91 measures, and namely with the formaldehyde in a certain amount of absorbing pure water gas sample, then uses the formaldehyde in spectrophotometric determination water.Formaldehyde collecting rate calculates by following formula:
Wherein, A
0and A
xto be respectively when test starts and the absorbance of formaldehyde air after 24 hours.
Concrete test data is in table 2.
Table 2: formaldehyde collecting rate test chart
| Formaldehyde collecting rate, % | |
| Embodiment 1 | 94.5 |
| Embodiment 2 | 93.8 |
| Embodiment 3 | 99.7 |
Embodiment 4
A method for purifying indoor formaldehyde, concrete steps are as follows:
(1) indoor formaldehyde scavenger (40 grams/box) opening 10 box embodiments 3 prepared is dispersed is positioned over a newly-built hotel guest-room indoor (usable floor area 20m
2), airtight 5 days of window of closing the door;
(2) window, gravity-flow ventilation 2 days.
Test: before purifying formaldehyde, indoor formaldehyde concentration is 0.80mg/m
3, after adopting embodiment 4 purifying indoor formaldehyde, indoor formaldehyde concentration is 0.05mg/m
3.
Claims (5)
1. a method for purifying indoor formaldehyde, comprises the steps:
(1) indoor formaldehyde scavenger dispersion is positioned over indoor, close the door the airtight 3-7 days of window, and the consumption of wherein said indoor formaldehyde scavenger is 10-30 gram/m;
(2) window ventilation 1-3 days.
2. the method for purifying indoor formaldehyde as claimed in claim 1, it is characterized in that, described indoor formaldehyde scavenger is made up of the raw material of following weight parts: bentonite 4 ~ 8 parts, Tea Polyphenols 0.5 ~ 1.5 part, amino acid/11 ~ 3 part, adduct sodium sulphate-hydrogen peroxide-sodium chloride 80 ~ 90 parts, 200 parts, water, lauryl glucosyl 1 ~ 5 part.
3. the method for purifying indoor formaldehyde as claimed in claim 2, it is characterized in that, described amino acid is one in alanine, tryptophan, ASPARTIC ACID, histidine, lysine, glutamic acid, methionine, proline, threonine, leucine, arginine, interior propylhomoserin, glycine and L-homoserine or its mixture.
4. the method for purifying indoor formaldehyde as claimed in claim 3, it is characterized in that, described amino acid is the mixture of ASPARTIC ACID and L-homoserine, and wherein the mass ratio of ASPARTIC ACID and L-homoserine is 2:1-1:2.
5. the method for purifying indoor formaldehyde as claimed in claim 1, it is characterized in that, described adduct sodium sulphate-hydrogen peroxide-sodium chloride adopts following method to be prepared from: added by sodium chloride in hydrogenperoxide steam generator, add anhydrous sodium sulfate again, stir, decompress filter, vacuum drying.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105561749A (en) * | 2015-12-21 | 2016-05-11 | 天津欧盼科技开发有限公司 | Method for comprehensively treating indoor environmental pollution |
| CN105771545A (en) * | 2016-05-26 | 2016-07-20 | 保护伞环保科技成都有限公司 | Formaldehyde adsorption device |
| CN105771585A (en) * | 2016-05-26 | 2016-07-20 | 保护伞环保科技成都有限公司 | Formaldehyde adsorption device |
| CN105797566A (en) * | 2016-05-26 | 2016-07-27 | 保护伞环保科技成都有限公司 | Formaldehyde absorption board |
| CN105797565A (en) * | 2016-05-26 | 2016-07-27 | 保护伞环保科技成都有限公司 | Formaldehyde absorption board |
| CN106955590A (en) * | 2017-04-27 | 2017-07-18 | 舒尔环保科技（合肥）有限公司 | A kind of composite purifying agent in air purifier |
| CN109513328A (en) * | 2017-09-18 | 2019-03-26 | 长沙创远环保科技有限公司 | A kind of purifying formaldehyde method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105561749A (en) * | 2015-12-21 | 2016-05-11 | 天津欧盼科技开发有限公司 | Method for comprehensively treating indoor environmental pollution |
| CN105771545A (en) * | 2016-05-26 | 2016-07-20 | 保护伞环保科技成都有限公司 | Formaldehyde adsorption device |
| CN105771585A (en) * | 2016-05-26 | 2016-07-20 | 保护伞环保科技成都有限公司 | Formaldehyde adsorption device |
| CN105797566A (en) * | 2016-05-26 | 2016-07-27 | 保护伞环保科技成都有限公司 | Formaldehyde absorption board |
| CN105797565A (en) * | 2016-05-26 | 2016-07-27 | 保护伞环保科技成都有限公司 | Formaldehyde absorption board |
| CN106955590A (en) * | 2017-04-27 | 2017-07-18 | 舒尔环保科技（合肥）有限公司 | A kind of composite purifying agent in air purifier |
| CN109513328A (en) * | 2017-09-18 | 2019-03-26 | 长沙创远环保科技有限公司 | A kind of purifying formaldehyde method |
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