CN105289280A - Air cleaning method for building with central air-conditioner - Google Patents
Air cleaning method for building with central air-conditioner Download PDFInfo
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- CN105289280A CN105289280A CN201510778000.9A CN201510778000A CN105289280A CN 105289280 A CN105289280 A CN 105289280A CN 201510778000 A CN201510778000 A CN 201510778000A CN 105289280 A CN105289280 A CN 105289280A
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Abstract
The invention discloses an air cleaning method for a building with a central air-conditioner. Filtering purification units are respectively arranged at a fresh air inlet of the central air-conditioner and a gas outlet of a building so that air flowing in the building goes through the filtering purification units and is treated. The filtering purification unit comprises a first adsorption part, a catalysis part and a second adsorption part and the above three parts are orderly superimposed. The catalyst has a removal rate of benzene, toluene, xylene, ethylbenzene, styrene, formaldehyde, acetaldehyde and acrolein in air in the building of 0.05mg/m<3> or less so that microbe content of circulation gas is substantially reduced.
Description
Technical field
The present invention relates to technical field of air purification, be specifically related to a kind of air purification method with central air-conditioning building.
Background technology
At present, along with expanding economy, domestic big city can be fewer and feweri for the plot of civil engineering, and the average height of building increases year by year, and a large amount of office building increases sharply.In office building, be generally provided with central air-conditioning.
Central air conditioner system is primarily of heating-cooling equipment or the composition such as device (compressor, Condensing units, handpiece Water Chilling Units, air-conditioning box, boiler, spray chamber etc.), pipeline (refrigerant line, refrigerant pipeline, refrigerating medium pipeline etc.), indoor end equipment (indoor airduct water pipe, air diffuser, fan coil, indoor apparatus of air conditioner etc.), outdoor equipment (outdoor air conduit, cooling tower, air cooled condenser etc.), water pump, control device and auxiliary device.Its operation principle is as follows:
After refrigerant compression is become liquid state by compressor by refrigeration machine, send in evaporimeter and carry out heat exchange with chilled water, freezed by chilled water, chilled water is delivered in the cooling coil of each air blower by refrigerating water pump, is blowed the object reaching cooling by blower fan.Cold-producing medium after evaporation within the condenser releases heat becomes gaseous state, and cooling water is delivered on cooling tower by coolant pump, carries out spraying cooling by water tower blower fan to it, and carries out heat exchange between air, distributes heat in air and goes.
Central air-conditioning system is according to the source situation of process air, and divide again single flow, closed and air return type, general air-conditioning system is air return type air-conditioning system.Air return type air-conditioning system is different by the mixing number of times that before air-supply, return air participates in air handling process again, is divided into primary retirn air formula and secondary return air formula.Allow return air first mix with new wind, then processed, reach ventilation state, this mixing integrated system once, is called primary retirn air formula system.Allow new wind mix with part return air and after treatment, again mix with part return air and meet the requirements of ventilation state, being called secondary return air formula system.Central air conditioner system, in order to energy-conservation, generally adopts air return type, unless there is harmful substance in air-conditioned room.
In office building, because personnel are numerous, construction area is also large, therefore various finishing pollution, breathing exhaust emission and pathogen transmission pollute and are difficult to avoid, and the central air-conditioning that most office building adopts is air return type, causes the pollution of subregion to diffuse to whole building by central air-conditioning thus, when epidemic disease breaks out, the rapid diffusion of disease also can be caused.
Mostly current removal air-polluting mode, be by physical absorption forms such as charcoal absorptions, the mode that this place to go is polluted, and takes effect slow, and organic pollution can not be decomposed, significantly can not reduce haze, therefore limited more.Although there are some means utilizing chemical mode to purify the air of a room, such as utilize various chemical reagent or catalyst etc., it generally needs higher temperature, also more to environment for use restriction.
Retrieve prior art through inventor to find, also do not adopt room temperature catalytic air at present, and the organic pollution in air is decomposed, and reduce haze particle, pollutant levels are reduced to the technology of ppm level.
Summary of the invention
The object of the invention is to propose a kind of air purification method with central air-conditioning building, it not only carries out catalysis to air, by the harmful substance in air, such as nitrogen oxide, oxycarbide, organic odor contamination such as benzene,toluene,xylene, ethylbenzene, styrene, formaldehyde, acetaldehyde, methacrylaldehyde etc., carry out decomposing, being oxidized or/and adsorb, also bactericidal purifying is carried out to air, ensure the air cleaning of central air-conditioning.
For reaching this object, the present invention by the following technical solutions:
A kind of air purification method with central air-conditioning building, filtration, purification unit is provided with at the fresh wind port place of described central air-conditioning and building air outlet, make the process of air through described filtration, purification unit of circulation in building, the first adsorption element superposed before and after described filtration, purification unit comprises, catalytic member and the second adsorption element.
Described first adsorption element is provided with fibrous filter layer, and described fibrous filter layer is superimposed with paper fiber thing filter course and ultra-fine fibre glass thing filter course.
Described catalytic member is provided with catalyst layer, and described catalyst comprises following component,
A) Al of 10%
2o
3the Ce/Zr composite oxides of load, the mol ratio Ti:Ce:Zr of its each component is 1:0.08:0.08;
B) V of 5%
2o
5/ (MoO
3)
0.4(WO
3)
0.6/ TiO
2composite oxides, wherein the mol ratio of V:Mo:W:Ti is 2:0.4:0.6:1;
C) ZSM-5 molecular sieve of surplus.
Described second adsorption element is provided with adsorption layer, and described adsorption layer is made up of the nano titanium oxide of active carbon and Ag-bearing, and its mixing quality such as, than being 5:1-2:1,4.5:1,4:1,3.5:1,3:1 etc.
The preparation method of described catalyst can take conventional infusion process and other alternatives, the prior art unrestricted choice that those skilled in the art can grasp according to it, and the present invention repeats no more.
When central air-conditioning of the present invention is started working, first new wind and air-out enter the first adsorption element, in the first adsorption element, successively through the filtration of paper fiber layer and ultra-fine fibre glass layer, filter the particle in air and large molecule.
Air after filtering enters catalytic member subsequently, and in catalytic member, the organic pollution in air, such as formaldehyde etc., catalyzed oxidation, becomes harmless or be easy to other organic matters of absorbing.
Air after catalysis, enters the second adsorption element.In air, the organic pollution of catalyzed oxidation is absorbed by active carbon, and is distributed in the silver in active carbon, kills virus to the microorganism in air, thus reduces the content of bacterium.
Said composition is made to produce cooperative effect, the control of said composition to haze is efficient reaches 100%, simultaneously active high, catalytic action can be played under room temperature, the organic matter degradations such as the formaldehyde in air, benzene are called carbon dioxide, and are higher valence state by harmful oxysulfide, nitrogen oxide catalytic oxidation, and then with charcoal absorption, various pollutant is reduced to ppm level, significantly reduces the content of microorganisms in circulating air simultaneously.
Detailed description of the invention
The present invention is described catalyst of the present invention by following embodiment.
Embodiment 1
A kind of air purification method with central air-conditioning building, filtration, purification unit is provided with at the fresh wind port place of described central air-conditioning and building air outlet, make the process of air through described filtration, purification unit of circulation in building, the first adsorption element superposed before and after described filtration, purification unit comprises, catalytic member and the second adsorption element.
Described first adsorption element is provided with fibrous filter layer, and described fibrous filter layer sequencing is superimposed with paper fiber thing filter course and ultra-fine fibre glass thing filter course.
Described catalytic member is provided with catalyst layer, prepares catalyst by infusion process, comprises following component,
A) Al of 10%
2o
3the Ce/Zr composite oxides of load, the mol ratio Ti:Ce:Zr of its each component is 1:0.08:0.08;
B) V of 5%
2o
5/ (MoO
3)
0.4(WO
3)
0.6/ TiO
2composite oxides, wherein the mol ratio of V:Mo:W:Ti is 2:0.4:0.6:1;
C) ZSM-5 molecular sieve of surplus.
Described second adsorption layer is made up of the nano titanium oxide of active carbon and Ag-bearing, and its mixing quality is than being 3:1.
Start described central air-conditioning, for testing its purification function, in new wind, pass into haze PM2.5 index is the air of 300, and makes the benzene,toluene,xylene of indoor gas, ethylbenzene, styrene, formaldehyde, acetaldehyde, level of acrolein reach 10 milligrams/cubic metre.Circulating air tested indoor gas after 15 minutes, and its haze PM2.5 index is 0, and benzene,toluene,xylene, ethylbenzene, styrene, formaldehyde, acetaldehyde, level of acrolein reach less than 0.01 milligram/cubic metre.
Comparative example 1
Component A content 15%, not containing B component, all the other conditions are constant, and its PM2.5 value is 51, and benzene,toluene,xylene, ethylbenzene, styrene, formaldehyde, acetaldehyde, level of acrolein are more than 0.1 milligram/cubic metre.
Comparative example 2
B component content 15%, not containing component A, its PM2.5 value is 49, and benzene,toluene,xylene, ethylbenzene, styrene, formaldehyde, acetaldehyde, level of acrolein are more than 0.1 milligram/cubic metre.
Comparative example 3
The ZSM-5 molecular sieve of component C is replaced with alundum (Al2O3), and all the other conditions are constant, and its PM2.5 value is 43, and benzene,toluene,xylene, ethylbenzene, styrene, formaldehyde, acetaldehyde, level of acrolein are more than 0.1 milligram/cubic metre.
Above-described embodiment and comparative example illustrate, there is specific contact between several component of catalyst of the present invention and between catalyst carrier, omit or replace wherein one or more, all can not reach the certain effects of the application, prove to which create cooperative effect.
Applicant states, the present invention illustrates catalyst of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned catalyst, does not namely mean that the present invention must rely on above-mentioned detailed catalysts and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to equivalence replacement and the interpolation of auxiliary element, the concrete way choice etc. of each raw material of product of the present invention, all drops within protection scope of the present invention and open scope.
Claims (1)
1. the air purification method with central air-conditioning building, is provided with filtration, purification unit at the fresh wind port place of described central air-conditioning and building air outlet, makes the air of circulation in building through the process of described filtration, purification unit, it is characterized in that,
The first adsorption element superposed before and after described filtration, purification unit comprises, catalytic member and the second adsorption element,
Described first adsorption element is provided with fibrous filter layer, and described fibrous filter layer is superimposed with paper fiber thing filter course and ultra-fine fibre glass thing filter course, it is characterized in that,
Described catalytic member is provided with catalyst layer, and described catalyst comprises following component,
A) Al of 10%
2o
3the Ce/Zr composite oxides of load, the mol ratio Ti:Ce:Zr of its each component is 1:0.08:0.08;
B) V of 5%
2o
5/ (MoO
3)
0.4(WO
3)
0.6/ TiO
2composite oxides, wherein the mol ratio of V:Mo:W:Ti is 2:0.4:0.6:1;
C) ZSM-5 molecular sieve of surplus;
Described second adsorption filtration adsorption element is provided with adsorption layer, and described adsorption layer is made up of the nano titanium oxide of active carbon and Ag-bearing, and its mixing quality is than being 5:1-2:1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510778000.9A CN105289280A (en) | 2015-11-13 | 2015-11-13 | Air cleaning method for building with central air-conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510778000.9A CN105289280A (en) | 2015-11-13 | 2015-11-13 | Air cleaning method for building with central air-conditioner |
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|---|---|
| CN105289280A true CN105289280A (en) | 2016-02-03 |
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ID=55187508
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|---|---|---|---|
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0547934A1 (en) * | 1991-12-16 | 1993-06-23 | Rhone-Poulenc Chimie | Catalyst for selective reduction of nitrogen oxides in a gas, and use of the same |
| KR20030047203A (en) * | 2001-12-08 | 2003-06-18 | 현대자동차주식회사 | Apparatus for purifying exhaust gas having rotary type substrate and purifying method of the same |
| CN202734060U (en) * | 2012-07-03 | 2013-02-13 | 江苏瑞丰科技实业有限公司 | Ventilation system PM2.5 and air contaminant cleaning treatment device |
| CN104069867A (en) * | 2014-07-11 | 2014-10-01 | 武汉大学 | Monolithic catalyst as well as preparation method and application thereof |
| CN104941425A (en) * | 2015-06-05 | 2015-09-30 | 广东美的制冷设备有限公司 | Air purification device, air purification method and application of air purification method |
-
2015
- 2015-11-13 CN CN201510778000.9A patent/CN105289280A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0547934A1 (en) * | 1991-12-16 | 1993-06-23 | Rhone-Poulenc Chimie | Catalyst for selective reduction of nitrogen oxides in a gas, and use of the same |
| KR20030047203A (en) * | 2001-12-08 | 2003-06-18 | 현대자동차주식회사 | Apparatus for purifying exhaust gas having rotary type substrate and purifying method of the same |
| CN202734060U (en) * | 2012-07-03 | 2013-02-13 | 江苏瑞丰科技实业有限公司 | Ventilation system PM2.5 and air contaminant cleaning treatment device |
| CN104069867A (en) * | 2014-07-11 | 2014-10-01 | 武汉大学 | Monolithic catalyst as well as preparation method and application thereof |
| CN104941425A (en) * | 2015-06-05 | 2015-09-30 | 广东美的制冷设备有限公司 | Air purification device, air purification method and application of air purification method |
Non-Patent Citations (2)
| Title |
|---|
| 闫志勇等: ""V2O5-WO3-MoO3/TiO2催化剂制备及NH3选择性还原NOx的试验研究"", 《动力工程》 * |
| 韦薇等: ""Ce0.6Zr0.4O2/γ-Al2O3复合粉体的制备及其结构研究"", 《楚雄师范学院学报》 * |
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Application publication date: 20160203 |