CN101224377A - Compound depurative preparing method for removing organic volatiles from air - Google Patents
Compound depurative preparing method for removing organic volatiles from air Download PDFInfo
- Publication number
- CN101224377A CN101224377A CNA2007100662793A CN200710066279A CN101224377A CN 101224377 A CN101224377 A CN 101224377A CN A2007100662793 A CNA2007100662793 A CN A2007100662793A CN 200710066279 A CN200710066279 A CN 200710066279A CN 101224377 A CN101224377 A CN 101224377A
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- CN
- China
- Prior art keywords
- active carbon
- organic volatile
- purifying agent
- zinc
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 150000001875 compounds Chemical class 0.000 title abstract description 4
- 239000003039 volatile agent Substances 0.000 title description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 46
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 37
- 239000012629 purifying agent Substances 0.000 claims abstract description 19
- 239000007789 gas Substances 0.000 claims abstract description 11
- 239000002699 waste material Substances 0.000 claims abstract description 11
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims abstract description 9
- 239000011701 zinc Substances 0.000 claims abstract description 9
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 9
- 238000002360 preparation method Methods 0.000 claims abstract description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 239000002131 composite material Substances 0.000 claims description 18
- 239000003054 catalyst Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 8
- 230000004048 modification Effects 0.000 claims description 8
- 238000012986 modification Methods 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 claims description 6
- 239000004246 zinc acetate Substances 0.000 claims description 6
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 4
- 230000004913 activation Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 2
- 239000002019 doping agent Substances 0.000 claims description 2
- 238000010792 warming Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 3
- 230000003213 activating effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 238000005034 decoration Methods 0.000 abstract 1
- 238000003905 indoor air pollution Methods 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 8
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- 125000000524 functional group Chemical group 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 5
- 238000006731 degradation reaction Methods 0.000 description 5
- 230000000505 pernicious effect Effects 0.000 description 4
- 239000011787 zinc oxide Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 238000004887 air purification Methods 0.000 description 3
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 3
- 150000001244 carboxylic acid anhydrides Chemical class 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 125000000686 lactone group Chemical group 0.000 description 3
- 150000002596 lactones Chemical class 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 125000004151 quinonyl group Chemical group 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 231100000749 chronicity Toxicity 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000957 no side effect Toxicity 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- -1 vinyl acetate compound Chemical class 0.000 description 1
Landscapes
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention relates to a preparation method of a compound purifying agent used for removing organic volatile matters from air, belonging to the technical field of metallurgy chemical industry preparation. The invention is suitable for purifying the organic volatile matters, etc. various harmful gases in present family decoration. The compound purifying agent takes waste active carbon containing 5 to 10 percent of zinc as material, and activates and recycles the waste active carbon through decomposing, adulterating, activating and modifying processes, changes the chemical combination state of the zinc in the waste active carbon, simultaneously and leads various functional units which can absorb and degrade the organic volatile matters to be formed on the surface of the active carbon. The invention can adapt to a long existence period and a long release period of indoor air pollutions and the removal rate to poor polar or non-polar organic volatile matters, etc. harmful gases can reach 95 to 100 percent.
Description
One, technical field
The present invention relates to a kind of preparation method who is used for removing the composite purifying agent of air organic volatile, belong to the chemical metallurgy preparing technical field.
Two, background technology
In the vinyl acetate compound probability, produce the useless catalyst that a large amount of loads have the zinc acetate active carbon, and the active carbon of these inactivations goes out of use with waste residue.The composite purifying agent that the present invention relates to is exactly to adopt these discarded zinc active carbons that contain to make after handling again, and it mainly is made of active carbon and zinc oxide crystallite.
New home fitting-up and daily in ignored the organic volatile pernicious gases such as (VOCs) that macromolecular material degraded, paint, coating, building materials etc. slowly discharge, data according to professional testing agency statistics, newly-decorated house organic volatile exceeding standard rate is reached more than 80%, in the environment of long-term sd so, influence people's health, even can bring out various malignant tumours.Therefore the quality of indoor air more and more is subjected to people's attention, and the indoor air purified treatment has been subjected to environmentalist's attention.
Active carbon adsorption and optically catalytic TiO 2 method are the normal methods that adopts in the indoor air purification, but all are to adopt common active carbon to adsorb removal at present, or single photochemical catalyst comes catalytic degradation.Nuisances such as indoor organic volatile matter have with low concentration and long-term existence and slowly-releasing feature, when adopting common active carbon as adsorbent, lack the functional group that organic volatile is had absorption and degradation because of its surface, in indoor air purification, reach capacity easily, therefore adopt the weak effect of the organic volatile of the indoor low concentration of common charcoal absorption; Adopt single photochemical catalyst, cause the reunion of powder easily, cause losing light-catalysed effect, do not reach the removal purpose, certain condition restriction is arranged when using photochemical catalyst in addition, need when the internal radiation of corresponding light wave-length coverage, just can play the removal effect, thereby reduce the use effect of photochemical catalyst in indoor air purification.
Therefore, only adopt the method for common active carbon or single photochemical catalyst all can not fundamentally eliminate pernicious gas such as organic volatile in the room air, exist problems such as purification is not thorough, cost is higher, lasting cycle weak point, recyclability difference, limited its promotion and application.
Composite purifying agent of the present invention is a kind of composite gas cleanser that is used for absorption of pernicious gas such as room air VOCs and catalysis, because of supported nano zinc oxide in active carbon, active carbon has been carried out modification, make its surface that the multiple functional group that VOCs is had absorption and degradation be arranged, the effect that has not only surmounted common active carbon, and possessed light-catalysed effect, overcome the deficiency of common active carbon of present use and single use photochemical catalyst, be a kind of easy to use, good purification, and the room air composite purifying agent that has no side effect.
Three, summary of the invention
The object of the present invention is to provide a kind of preparation method who is used for removing the composite purifying agent of air organic volatile, with zinc content is that 5～10% waste active carbon is a raw material, handle by decomposition, doping, activation, modification, make the waste active carbon activating and regenerating, change the combined form of zinc in the waste active carbon simultaneously, activated carbon surface is formed multiplely has the absorption and the functional group of degradation to VOCs, with remove or the air of degrading in organic volatile, clearance reaches 95～100%.
Invention is implemented by following technical scheme:
1, feedstock production: to contain the zinc percentage by weight is that 5～10% waste active carbon is a raw material, and the discarded useless catalyst of zinc acetate active carbon that carries is broken for granularity 0.7～0.05mm with it when for example producing vinyl acetate.
2, roasting is decomposed: raw material is put into roaster, when 80～250 ℃ of temperature sections, the control heating rate is 50～100 ℃/min, insulation 80～120min in the time of 250 ℃, keeping in the burner hearth is negative pressure, and its purpose is to make the decomposition of the zinc acetate that is adsorbed on waste active carbon inside, and the acetic acid of generation parses from the hole of active carbon rapidly, open the duct of active carbon, make active carbon produce the part hole;
3, dopant activation: when being warming up to 250～950 ℃ of temperature sections; the control heating rate is 40～80 ℃/min; in this process, feed nitrogen and be protection gas; nitrogen flow is 5～20ml/min; the partial oxidation zinc of staying in the active carbon hole when its purpose is zinc acetate is decomposed evaporates; play corrasion to active carbon; produce more duct; make active carbon obtain activation; stay nano zine oxide in the active carbon hole and play the effect of doping; improve the absorption property of active carbon, possessed light-catalysed effect simultaneously
4, surface modification: in the time of 950 ℃, change water flowing steam, guarantee that the steam flow is 0.8～1.5g/min, the time that water vapour feeds is 360～420min, its purpose is to make active carbon further to activate, produce flourishing pore structure, make the surface modification of active carbon simultaneously, generate phenolic hydroxyl group, carboxyl, lactone group, quinonyl, carboxylic acid anhydride, lactone fundamental mode carbonyl, ether, pyrones or the isostructural surface functional group of class pyrones;
5, after surface modification finished, the cooling velocity cool to room temperature with 100～130 ℃/min in nitrogen gas divides can obtain the product composite purifying agent.Through can directly in depollution of environment engineering, using after the packing.
This product feature is as follows: the zinc oxide content height, activated carbon surface has phenolic hydroxyl group, carboxyl, lactone group, quinonyl, carboxylic acid anhydride, lactone fundamental mode carbonyl, ether, pyrones or the isostructural surface functional group of class pyrones, and the specific area of active carbon is 900～1000m
2/ g, iodine sorption value are 800～1100mg/g.
Compare advantage and the good effect that has with known technology:
(1) the present invention is to be raw material with discarded active carbon, has saved the complicated technology of activated carbon supported compound when making adsorbent, and resource is utilized once more, has promoted the production of vinyl acetate industry.
(2) this product combines the absorption property and the zinc oxide catalytic performance of active carbon, by modification with mix and activated carbon surface to be formed with multiple organic volatile is had functional group's (structures such as phenolic hydroxyl group, carboxyl, lactone group, quinonyl, carboxylic acid anhydride, lactone fundamental mode carbonyl, ether, pyrones or class pyrones) of absorption and degradation, can very high removal efficient be arranged to pernicious gases such as low pole or nonpolar organic volatiles.
(3) this composite purifying agent can adapt to characteristics such as chronicity, deenergized period that indoor air pollutants exists be long, carry out in good time absorption, for the user provides a kind of easy to use, low price, good purification, can not bring the room air composite purifying agent of secondary pollution.
Four, the specific embodiment
Embodiment 1
Carry in the time of will producing vinyl acetate and go in the roaster after the useless catalyst of zinc acetate active carbon is broken for granularity 0.7～0.05mm, when 80～250 ℃ of temperature sections, heating rate is 80 ℃/min, and is incubated 100min in the time of 250 ℃, and keeping in the burner hearth in this process is negative pressure; When 250～950 ℃ of temperature sections, heating rate is 50 ℃/min, feeds nitrogen and be protection gas in this process, and the protection throughput is 15ml/min; Feed water vapour in the time of 950 ℃, guarantee that the steam flow is 1.2g/min, the time that water vapour feeds is 400min; When process finished, the cooling velocity cool to room temperature with 120 ℃/min in nitrogen can obtain this composite purifying agent.
In the classroom of newly-decorated certain kindergarten, usable floor area is 120m
2, after the door and window through 12h closes, detecting by relevant department, the total organic volatile in the classroom (TVOC) detected value is 3.8～12.0mg/m
3, leave standstill this composite purifying agent 1000g in indoor many places, after three days use, the TVOC concentration of rechecking under the same conditions in this classroom is 0mg/m
3, clearance reaches 100%, has arrived the GB requirement.
Embodiment 2
Composite purifying agent preparation: with zinc content is that 8% waste active carbon is that raw material is put into roaster, and when 80～250 ℃ of temperature sections, heating rate is 80 ℃/min, and in the time of 250 ℃ insulation 100min, keeping in the burner hearth in this process is negative pressure; When 250～950 ℃ of temperature sections, heating rate is 50 ℃/min, feeds nitrogen and be protection gas in this process, and the protection throughput is 15ml/min, feeds water vapour in the time of 950 ℃, guarantees that the steam flow is 1.2g/min, and the time that water vapour feeds is 380min; When process finished, the cooling velocity cool to room temperature with 100 ℃/min in nitrogen can obtain this composite purifying agent.
The untapped wardrobe that certain factory produces, volume is 3m
3, detecting by relevant department, the concentration of total organic volatile (TVOC) is 8.84mg/m
3, this composite purifying agent 300g is left standstill in many places in wardrobe, and after the use through a week, rechecking this indoor TVOC concentration is 0mg/m
3, clearance reaches 100%, has arrived the GB requirement.
Claims (2)
1. preparation method who is used for removing the composite purifying agent of air organic volatile, it is characterized in that: invention is implemented according to the following steps,
(1) feedstock production: to contain the zinc percentage by weight is that 5～10% waste active carbon is a raw material, and it is broken for granularity 0.7～0.05mm;
(2) roasting is decomposed: raw material is put into roaster, heats up when 80～250 ℃ of temperature sections, and the control heating rate is 50～100 ℃/min, insulation 80～120min in the time of 250 ℃, and keeping in the burner hearth is negative pressure;
(3) dopant activation: when being warming up to 250～950 ℃ of temperature sections, the control heating rate is 40～80 ℃/min, feeds nitrogen and be protection gas in this process, and nitrogen flow is 5～20ml/min;
(4) surface modification: change water flowing steam in the time of 950 ℃, the steam flow is 0.8～1.5g/min, and the time that water vapour feeds is 360～420min;
After (5) surface modification finished, the cooling velocity cool to room temperature with 100～130 ℃/min in nitrogen gas divides can obtain the product composite purifying agent.
2. the preparation method who is used for removing the composite purifying agent of air organic volatile according to claim 1 is characterized in that: described raw material is loaded with the useless catalyst of active carbon of zinc acetate when producing vinyl acetate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100662793A CN100525884C (en) | 2007-10-16 | 2007-10-16 | Compound depurative preparing method for removing organic volatiles from air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100662793A CN100525884C (en) | 2007-10-16 | 2007-10-16 | Compound depurative preparing method for removing organic volatiles from air |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101224377A true CN101224377A (en) | 2008-07-23 |
| CN100525884C CN100525884C (en) | 2009-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100662793A Expired - Fee Related CN100525884C (en) | 2007-10-16 | 2007-10-16 | Compound depurative preparing method for removing organic volatiles from air |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100525884C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350329A (en) * | 2011-09-07 | 2012-02-15 | 昆明理工大学 | Regeneration method of tobacco stem based active carbon for adsorbing and purifying hydrogen phosphide |
| CN103071455A (en) * | 2013-02-26 | 2013-05-01 | 昆明理工大学 | Preparation method of composite adsorption purifying agent |
-
2007
- 2007-10-16 CN CNB2007100662793A patent/CN100525884C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350329A (en) * | 2011-09-07 | 2012-02-15 | 昆明理工大学 | Regeneration method of tobacco stem based active carbon for adsorbing and purifying hydrogen phosphide |
| CN103071455A (en) * | 2013-02-26 | 2013-05-01 | 昆明理工大学 | Preparation method of composite adsorption purifying agent |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100525884C (en) | 2009-08-12 |
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Granted publication date: 20090812 Termination date: 20111016 |