CN101733071B - Formaldehyde removing carbon and preparation method thereof - Google Patents
Formaldehyde removing carbon and preparation method thereof Download PDFInfo
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- CN101733071B CN101733071B CN2008102290709A CN200810229070A CN101733071B CN 101733071 B CN101733071 B CN 101733071B CN 2008102290709 A CN2008102290709 A CN 2008102290709A CN 200810229070 A CN200810229070 A CN 200810229070A CN 101733071 B CN101733071 B CN 101733071B
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Abstract
The invention relates to carbon powder reprocessing technology, in particular to loaded carbon having high formaldehyde oxygenolysis and a preparation method thereof. The invention provides formaldehyde removing carbon capable of getting rid of formaldehyde radically and a preparation method thereof. The formaldehyde removing carbon is prepared from the following raw materials in part by weight: high-temperature carbon 40-80, lime 20-60, sodium chloride 5-12 and oxidant 7-15. The preparation method of the invention comprises: a step of forming, in which the 40 to 80 parts of high-temperature carbon, the 5 to 12 parts of sodium chloride and the 20 to 60 part of lime are mixed and stirred, water in an amount of 15 to 23 percent based on the weight of the mixture is added into the mixture, the wet mixture is filled in forming equipment to be made into blocks, and the blocks are dried to obtain a mixture A; a step of carbonization, in which the dried mixture A is filled in a carbonization kiln and is gradually heated to 700 to 900 DEG C by using a dry distillation method to complete carbonization to obtain a semi-finished product B; a step of activation, in which carbonization is finished, carbon dioxide or vapor is injected to obtain a semi-finished product C; and a step of finished product obtaining, in which the 7 to 15 parts of oxidant is added into the semi-finished product C at normal temperature, and the resulting products are packaged in bags to obtain the finished products.
Description
Technical field:
The present invention relates to a kind of powdered carbon reprocessing technology, relate in particular to year a charcoal and the preparation method of adding that a kind of PARA FORMALDEHYDE PRILLS(91,95) has oxygenolysis.
Background technology:
Formaldehyde is than high toxic material.Because of the use of adhesive, shaping agent becomes daily indoor ubiquitous air pollutants.Confirmed as carcinogenic and teratogenesis shape material by the World Health Organization.Be one of the allergen of generally acknowledging and potential pressure mutation-ure.Formaldehyde mainly shows aspects such as allotriosmia, stimulation, allergy, abnormal pulmonary function, dysfunction of liver to health effects.Preferentially control on the list formaldehyde at China's toxic chemical and be in second.
Long-term contact low dosage formaldehyde can cause following disease: various chronic respiratory diseases; Teenager's memory and intelligence descend; Cause nasopharyngeal carcinoma, colon brain tumor, cell nucleus gene sudden change, suppress injury repair, paramenia, pregnancy syndrome, neonatal chromosome disorder even leukemogenesis.In all contactees, children, pregnant woman and the elderly's PARA FORMALDEHYDE PRILLS(91,95) are particularly responsive, and harm is also maximum.
When indoor formaldehyde concentration reached 0.06-0.07 milligram/cubic metre, slight asthma will take place in children; Reaching at 0.1 o'clock just has peculiar smell and sense of discomfort; Reach at 0.5 o'clock, can stimulate eyes to cause and shed tears; Reach 0.6 throat discomfort or pain; When concentration is higher, the vomiting that can cause nausea, it is uncomfortable in chest to cough, asthma even pulmonary edema; When reaching 30 milligrams/cubic metre, meeting is the causing death immediately.
In existing improvement method, many forms are arranged.But summarizing to get up all is the different manifestations of " oxidation Decomposition ".Photocatalyst utilizes electric hole and hole to form hydroxy and creates oxidizing condition; Ozone, anion utilize the polyoxy atoms at suitable temperatures to decompose; Water is pounced on (water curtain) and is administered to the water-soluble characteristic of formaldehyde; Air catalyst also is to utilize the plant oxidant to reach to decompose and be solidificated in the control measures in the crystalline solid.
Be worth the emphasis prompting be active carbon and other raw material of wood-charcoal material taste removals the time charcoal absorption treating method.
Any raw material of wood-charcoal material all has absorption property, and the difference of size is the development degree of micropore., the charcoal of air cleaning also has an important techniques index---" absorption maintenance dose " in using.Filter through charcoal, the measured quantity that different materials is deposited in the charcoal body opening crack is also different.The absorption maintenance dose of formaldehyde after charcoal treatment has only 5-7%, so formaldehyde can not be thoroughly administered in charcoal absorption.
Summary of the invention:
The present invention is exactly to the problem that exists in the above-mentioned existing techniques, provides a kind of and can fundamentally dispel formaldehyde removing carbon of formaldehyde and preparation method thereof.
The raw material of wood-charcoal material also has a physical characteristic that gets the brush-off; Release function promptly blows slowly.Because raw material of wood-charcoal material bonding force is stable, hole is flourishing, has constituted chemistry and has added the advantage of carrying.Application technology is referred to as meaning: chemisorbed.Utilize the charcoal base to realize slow release as the oxidant carrier.Purpose is to change volatilization synchronously with the free humiture of formaldehyde, promotes the effect of in time decomposing.On timeliness and administration way economical and effective treatment measures.Specific area is the basis of adding carrying capacity.Adsorbance is big more, and release period is long more.
To achieve these goals, the present invention adopts following technical scheme: formaldehyde removing carbon of the present invention is formed by the following raw materials in parts by weight numeral system fully:
High temperature charcoal (more than kiln temperature 1000 degree) 40-80 part;
Lime 20-60 part;
Sodium chloride 5-12 part;
Oxidant 7-15 part.
The preferred weight umber of above-mentioned each raw material is:
High temperature charcoal 50-70 part;
Lime 30-50 part;
7-12 parts in sodium chloride;
10 parts in oxidant.
The preparation method of formaldehyde removing carbon of the present invention comprises the steps:
Moulding: after the lime of the sodium chloride of the high temperature charcoal of 40-80 part, 5-12 part and 20-60 part puddled, in mixture, add the water of mixture weight 15-23%, be moist shape, after dropping into former and processing bulk and dry mixture A;
Charing: the carbonizing kiln of packing into of the mixture A after will drying, be warmed up to the 700-900 degree gradually with cracking process, accomplish charing, semi-finished product B;
Activation: accomplish charing injecting carbon dioxide or steam, get semi-finished product C;
Finished product: the semi-finished product C under normal temperature mixes 7-15 part oxidant, and pack is finished product.
Beneficial effect of the present invention:
1, the inherent characteristic of utilizing the fast suction of raw material of wood-charcoal material to put slowly prolongs the Use Limitation of oxidant; The stable chemical attribute of raw material of wood-charcoal material keeps the catalysis of oxidant; The variation of raw material of wood-charcoal material burst size under temperature and humidity conditions and the formaldehyde characteristic that discharges of hiding combines, and realizes volatilization synchronously, the application target that closely decomposes;
2, utilize the alkalescence of lime, in the realization with acid and the specific function in dioxin is dispeled;
3, utilize the hygroscopic effect of sodium chloride to make charcoal surface deliquescence, in gas charcoal contact process, strengthen oxidative function; The catalytic action decomposing formaldehyde of oxidant;
4, by formaldehyde removing carbon of the present invention and preparation method thereof, each item performance indications are pressed QB/T2761-2006 " indoor air purification effect measuring method " and are detected, formaldehyde removing rate 48 hours 79%.Country's assay shows, by technology provided by the invention, makes the formaldehyde removing carbon performance indications and meets the technical requirements.
The specific embodiment:
Embodiment 1:
Formaldehyde removing carbon of the present invention is formed by the following raw materials in parts by weight numeral system fully:
High temperature charcoal (powdered carbon) 40 grams; Lime 20 grams; Sodium chloride 6 grams; Oxidant 7-8 gram.
The preparation method of formaldehyde removing carbon of the present invention comprises the steps:
Moulding: with high temperature charcoal (powdered carbon) 40 grams; Lime 20 grams; After sodium chloride 6 grams are puddled, in mixture, add entry 20 grams, be moist shape, it is dropped into former process bulk, get mixture A after drying;
Charing: the carbonizing kiln of packing into of the mixture A after will drying, progressively be warmed to 900 degree with cracking process, accomplish charing, semi-finished product B;
Activation: reach 900 when spending in the kiln temperature, injecting carbon dioxide or steam have promptly been accomplished activation process, semi-finished product C;
Finished product: semi-finished product C is packed in the container that can seal, restrain oxidant 7-8 with spraying method; The aqueous solution cloth that 100 gram water are processed imposes on the charcoal body, seals 30-40 minute, accomplishes to add to carry technology; Pack with sealing bag and to be finished product.
Embodiment 2:
Formaldehyde removing carbon of the present invention is formed by the following raw materials in parts by weight numeral system fully:
High temperature charcoal (powdered carbon) 80 grams; Lime 20 grams; Sodium chloride 10 grams; Oxidant 11 grams.
Its preparation method is with embodiment 1.
Embodiment 3:
Formaldehyde removing carbon of the present invention is mainly formed by the following raw materials in parts by weight numeral system fully:
High temperature charcoal (powdered carbon) 50 grams; Lime 50 grams; Sodium chloride 10 grams; Oxidant 10 grams.
Its preparation method is with embodiment 2.
Oxidant can adopt potassium ferrate.
Claims (6)
1. formaldehyde removing carbon is characterized in that, is formed fully by the following raw materials in parts by weight numeral system:
The above high temperature charcoal 40-80 part of kiln temperature 1000 degree;
Lime 20-60 part;
Sodium chloride 5-12 part;
Oxidant 7-15 part.
2. formaldehyde removing carbon according to claim 1 is characterized in that, is formed fully by the following raw materials in parts by weight numeral system:
The above high temperature charcoal 50-70 part of kiln temperature 1000 degree;
Lime 30-50 part;
Sodium chloride 7-12 part;
Oxidant: 10 parts.
3. formaldehyde removing carbon according to claim 1 is characterized in that, is formed fully by the following raw materials in parts by weight numeral system:
High temperature charcoal 40 grams that kiln temperature 1000 degree are above;
Lime 20 grams;
Sodium chloride 6 grams;
Oxidant 7-8 gram.
4. formaldehyde removing carbon according to claim 1 is characterized in that, is formed fully by the following raw materials in parts by weight numeral system:
High temperature charcoal 80 grams that kiln temperature 1000 degree are above;
Lime 20 grams;
Sodium chloride 10 grams;
Oxidant 11 grams.
5. formaldehyde removing carbon according to claim 1 is characterized in that, is formed fully by the following raw materials in parts by weight numeral system:
High temperature charcoal 50 grams that kiln temperature 1000 degree are above;
Lime 50 grams;
Sodium chloride 10 grams;
Oxidant 10 grams.
6. the preparation method of formaldehyde removing carbon is characterized in that, comprises the steps:
Moulding: after the lime of the high temperature charcoal that kiln temperature 1000 degree of 40-80 part are above, the sodium chloride of 5-12 part and 20-60 part is puddled; The water that in mixture, adds mixture weight 15-23%; Be moist shape, after dropping into former and processing bulk and dry mixture A;
Charing: the carbonizing kiln of packing into of the mixture A after will drying, be warmed up to the 700-900 degree gradually with cracking process, accomplish charing, semi-finished product B;
Activation: accomplish charing injecting carbon dioxide or steam, get semi-finished product C;
Finished product: the semi-finished product C under normal temperature mixes 7-15 part oxidant, and pack is finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102290709A CN101733071B (en) | 2008-11-26 | 2008-11-26 | Formaldehyde removing carbon and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102290709A CN101733071B (en) | 2008-11-26 | 2008-11-26 | Formaldehyde removing carbon and preparation method thereof |
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| Publication Number | Publication Date |
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| CN101733071A CN101733071A (en) | 2010-06-16 |
| CN101733071B true CN101733071B (en) | 2012-06-06 |
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| CN2008102290709A Expired - Fee Related CN101733071B (en) | 2008-11-26 | 2008-11-26 | Formaldehyde removing carbon and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1680018A (en) * | 2005-01-27 | 2005-10-12 | 潘晓明 | Methanal disintegrant and preparation thereof |
| CN101224382A (en) * | 2007-10-16 | 2008-07-23 | 昆明理工大学 | Compound depurative preparing method for removing methanol from air |
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2008
- 2008-11-26 CN CN2008102290709A patent/CN101733071B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1680018A (en) * | 2005-01-27 | 2005-10-12 | 潘晓明 | Methanal disintegrant and preparation thereof |
| CN101224382A (en) * | 2007-10-16 | 2008-07-23 | 昆明理工大学 | Compound depurative preparing method for removing methanol from air |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2002-191970A 2002.07.10 |
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| CN101733071A (en) | 2010-06-16 |
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Granted publication date: 20120606 Termination date: 20131126 |