CN105402833A - Air purifying method for building with central air conditioner - Google Patents
Air purifying method for building with central air conditioner Download PDFInfo
- Publication number
- CN105402833A CN105402833A CN201510780988.2A CN201510780988A CN105402833A CN 105402833 A CN105402833 A CN 105402833A CN 201510780988 A CN201510780988 A CN 201510780988A CN 105402833 A CN105402833 A CN 105402833A
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- CN
- China
- Prior art keywords
- air
- building
- adsorption
- filtration
- conditioning
- 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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
- F24F8/158—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using active carbon
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
- F24F8/167—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using catalytic reactions
Abstract
The invention discloses an air purifying method for a building with a central air conditioner. Filtering and purifying units are arranged at fresh air openings of the central air conditioner and air outlets of the building, and air circulating in the building is treated through the filtering and purifying units. Each filtering and purifying unit comprises a first adsorption component, a catalytic component and a second adsorption component which are overlaid front and back. Through catalysts, benzene, methylbenzene, dimethylbenzene, ethylbenzene, styrene, formaldehyde, acetaldehyde and acrolein in air in the building are reduced to be lower than 0.05 mg/cm<3>, and meanwhile the microorganism content in circulating air is remarkably lowered.
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.
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) the β type ferrosilite of 20%-60%, shown in described β type ferrosilite is composed as follows:
(x+y)M
(2/n)O·xFe
2O
3·yAl
2O
3·zSiO
2·wH
2O
In formula, M represents cation, and n is the valence of cation M, x+y+z=1, z/x to be 100-220, w be more than 1 positive integer, its SiO
2/ Al
2o
3mol ratio be 550-800;
B) GdFeO doped with Ce of 10%-30%
3with TiO
2mixture, Ce:GdFeO
3: TiO
2mol ratio be 0.25:1:2, and described titanium dioxide is anatase crystal;
C) active carbon 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.
The present invention is by choosing specific components A and B component, this catalyst is made to produce cooperative effect, make this catalyst reach less than 0.05 milligram/cubic metre to the removal of benzene,toluene,xylene, ethylbenzene, styrene, formaldehyde, acetaldehyde, methacrylaldehyde in air in buildings, significantly reduce 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) the β type ferrosilite of 40%, shown in described β type ferrosilite is composed as follows:
(x+y)M
(2/n)O·xFe
2O
3·yAl
2O
3·zSiO
2·wH
2O
In formula, M represents Ce, and n is the valence of cation M, and x+y+z=1, z/x are 150, w is 2;
B) GdFeO doped with Ce of 30%
3with TiO
2mixture, Ce:GdFeO
3: TiO
2mol ratio be 0.25:1:2, and described titanium dioxide is anatase crystal;
C) active carbon 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 7, and benzene,toluene,xylene, ethylbenzene, styrene, formaldehyde, acetaldehyde, level of acrolein reach less than 0.05 milligram/cubic metre.
Comparative example 1
Component A content 70%, not containing B component, all the other conditions are constant, and its PM2.5 value is 44, 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 70%, not containing component A, its PM2.5 value is 58, 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) the β type ferrosilite of 20%-60%, shown in described β type ferrosilite is composed as follows:
(x+y)M
(2/n)O·xFe
2O
3·yAl
2O
3·zSiO
2·wH
2O
In formula, M represents cation, and n is the valence of cation M, x+y+z=1, z/x to be 100-220, w be more than 1 positive integer, its SiO
2/ Al
2o
3mol ratio be 550-800;
B) GdFeO doped with Ce of 10%-30%
3with TiO
2mixture, Ce:GdFeO
3: TiO
2mol ratio be 0.25:1:2, and described titanium dioxide is anatase crystal;
C) active carbon 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510780988.2A CN105402833A (en) | 2015-11-13 | 2015-11-13 | Air purifying method for building with central air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510780988.2A CN105402833A (en) | 2015-11-13 | 2015-11-13 | Air purifying method for building with central air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105402833A true CN105402833A (en) | 2016-03-16 |
Family
ID=55468484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510780988.2A Withdrawn CN105402833A (en) | 2015-11-13 | 2015-11-13 | Air purifying method for building with central air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105402833A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104133A (en) * | 2006-07-12 | 2008-01-16 | 北京华夏金安环保科技有限公司 | Air purifying method and device thereof |
| CN101462054A (en) * | 2007-12-18 | 2009-06-24 | 东曹株式会社 | Catalyst for reducing nitrogen oxides and process for reducing nitrogen oxides |
| 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 CN201510780988.2A patent/CN105402833A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104133A (en) * | 2006-07-12 | 2008-01-16 | 北京华夏金安环保科技有限公司 | Air purifying method and device thereof |
| CN101462054A (en) * | 2007-12-18 | 2009-06-24 | 东曹株式会社 | Catalyst for reducing nitrogen oxides and process for reducing nitrogen oxides |
| 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 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160316 |