CN1167910C - Air purifying device for limited space - Google Patents
Air purifying device for limited space Download PDFInfo
- Publication number
- CN1167910C CN1167910C CNB021131147A CN02113114A CN1167910C CN 1167910 C CN1167910 C CN 1167910C CN B021131147 A CNB021131147 A CN B021131147A CN 02113114 A CN02113114 A CN 02113114A CN 1167910 C CN1167910 C CN 1167910C
- Authority
- CN
- China
- Prior art keywords
- catalyst
- air
- outlet
- limited space
- purifying device
- 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.)
- Expired - Fee Related
Links
- 239000003054 catalyst Substances 0.000 claims abstract description 118
- 238000000746 purification Methods 0.000 claims abstract description 18
- 239000000126 substance Substances 0.000 claims abstract description 8
- 238000004140 cleaning Methods 0.000 claims description 13
- 230000001351 cycling effect Effects 0.000 claims description 6
- 125000003118 aryl group Chemical group 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910052755 nonmetal Inorganic materials 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 239000007791 liquid phase Substances 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 15
- 239000002245 particle Substances 0.000 abstract description 13
- 239000007787 solid Substances 0.000 abstract description 13
- 239000003344 environmental pollutant Substances 0.000 abstract description 4
- 231100000719 pollutant Toxicity 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 7
- 239000007769 metal material Substances 0.000 description 6
- 230000000505 pernicious effect Effects 0.000 description 6
- 238000011109 contamination Methods 0.000 description 4
- 150000001450 anions Chemical class 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Images
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The present invention discloses an air purifying device for limited space, which is composed of an air circulation unit, an air purifying unit, a catalyst circulation unit and a control unit, wherein the air circulation unit comprises an air conveyer, a three-way valve, an indoor air outlet and an outdoor air outlet; the air purifying unit comprises a purification bed layer and a purification bed layer casing; the catalyst circulation unit comprises a catalyst memory and a catalyst conveying device. An outlet of the air conveyer is connected with an air inlet pipe of the purification bed layer casing; a catalyst outlet of the catalyst memory is connected with an inlet of the catalyst conveying device; an outlet of the catalyst conveying device is connected with a catalyst circulation inlet of the purification bed layer casing. The present invention has the advantages that the present invention can remove harmful gases in air in limited space and solid suspended particles in the air, and can remove heavy metal substances, such as lead, etc.; the present invention aims at the differences of pollutants in different environments to adopt different catalysts, and the air in the limited environment is purified.
Description
One, technical field
The present invention relates to a kind of civilian and industrial air cleaning unit.
Two, background technology
Along with the development of modernization industry, the air quality that the mankind depend on for existence is downward trend day by day.The reason that causes air quality to descend mainly contains a large amount of pernicious gases that give off in human being's production and the life, as COx, NOx, SOx, H
2S, HF, HCl, Cl
2And organic matters matter etc., and the various dust of mankind's activity generation, also has the pollution of solid suspended particles such as sand and dust that climatic deterioration causes to surrounding air, in addition, people for a long time movable (as places such as hotel, hotel, meeting room, waiting rooms) in the space of relative closure have also caused the decline of air quality in the confined space.Along with the raising day by day of people's living standard, also more and more higher to the requirement of air quality.For adapting to the requirement of people to air quality, revealed various air purifiers, existing air purifier major part all adopts filtering material to remove airborne suspended particulate, adopt porous material such as active carbon to come pernicious gas in the absorbed air, and have anion generator and produce a certain amount of anion.But there are some defectives in these air purifiers on performance: the material require that filters solid suspended particle is often changed; Sorbing material is low to the purification efficiency of most of inorganic pollution, to airborne greenhouse gases CO
2Produce little effect, and the regeneration of adsorbent is also relatively more difficult; The anion that produces combines with dust in air easily, is adsorbed on the furniture, on the wall, when the people walks about, is floated in the air formation " heavy ion ", generation secondary pollution once more.
Three, summary of the invention
1, goal of the invention: the purpose of this invention is to provide a kind of air purifying device for limited space, this device can effectively be removed gas harmful in the air and solid suspended particle, improves air quality.
2, technical scheme: technical scheme of the present invention is as follows: a kind of air purifying device for limited space is characterized in that this purifier is made of air circulation unit, air cleaning member, catalyst cycling element and control module; Air circulation unit comprises air conveyor, triple valve, room air outlet and outdoor air outlet, and air cleaning member comprises the purification bed and purify the bed shell that the catalyst cycling element comprises catalyst memory and catalyst conveying device; Catalyst heater and temp-controlling element are installed in the catalyst memory, the outlet of air conveyor is connected with the air inlet pipe that purifies the bed shell, the blast pipe that purifies the bed shell links to each other with triple valve, triple valve links to each other with outdoor outlet with indoor outlet, the catalyst outlet of catalyst memory links to each other with the inlet of catalyst conveying device, the outlet of catalyst conveying device links to each other with the catalyst loop head that purifies the bed shell, the catalyst loop exit that purifies the bed shell links to each other with the catalyst inlet of catalyst memory, and control module is to air conveyor, the catalyst conveying device, the catalyst heater, temp-controlling element and triple valve are controlled.
Described air circulation unit also comprises air filter, and the outlet of this air filter links to each other with the inlet of air conveyor.
Described air cleaning member comprises that also gas distributor and catalyst distributor gas distributor are arranged on the air that purifies bed and enter end face, and the catalyst distributor is arranged on the catalyst that purifies bed and enters end face.
Described air cleaning member also comprises thermoregulator, and this thermoregulator is installed in an end of the air outlet that purifies bed.
Described air filter major function is to remove solid suspended particle bigger in the air.Can be made by metal or nonmetallic materials, be best with the metal material.
Described catalyst memory is provided with liquid level gauge, catalyst adds valve and catalyst is removed valve.
Described gas distributor mainly is that the gas phase that will rise relatively is uniformly distributed on the interior cross section of purifier main body, can adopt various types such as cone eddy current type, two inlets circulation type, inner core flow-guiding type or umbellate form flow-guiding type, make with metal material or non-metallic material.
Described catalyst distributor is a kind of catalyst to be uniformly distributed in the parts that purify the bed upper surface, can be designed to slot type, trough box type, slotted disc type, disc type etc.Generally make also available nonmetallic materials manufacturing by metal material.
Described purification bed can be the purification of metal or the nonmetal different shape of making, as sphere, cylindricality, various annular, corrugated plate type etc.The volume that purifies bed can design according to the size of need better purifying space.
Described catalyst conveying device can adopt centrifugal pump, axial-flow pump, gear pump, reciprocating pump or the like.The catalyst conveying device can be installed in the inside of catalyst memory, also can be installed in the outside of catalyst memory.。
Described catalyst memory can be made by metal material or nonmetallic materials, and its shape can be rectangle, cylindrical, square column type etc.The memory top is provided with circulation catalyst inlet and fresh catalyst inlet, and the catalyst outlet is established in the below, and the next door is provided with liquid level gauge.Establish the catalyst regneration device in the memory, the catalyst regneration device mainly is made up of heater and temp-controlling element.Heater can be quartzy heating rod, electrically heated rod, stove silk etc.When adding fresh catalyst, with valve open, fresh catalyst adds from inlet tube, and when the catalyst permanent failure, with valve open, the catalyst of inefficacy is discharged by the catalyst outlet.
Described catalyst heater adopts quartzy heating rod, electrically heated rod or stove silk.
The employed catalyst of described air purifying device for limited space is the additive that has the alkaline liquid phase substance of pleasant aromatic odor or weakly alkaline bioactivator and play oxidation on a small quantity.
Purifying the bed shell can be made by various metal materials or nonmetallic materials, as: the steel of various models, aluminium, alloy material, engineering plastics etc.
Humidistat can be regulated the humidity of outlet air, according to the different regions weather conditions, can change the structure of adjuster, reaches the air of the certain humidity that needs.
Control module is by forming for the control core circuit with the micro computer, the power of air conveyor, the power of catalyst conveying device and the power of heating element heater are regulated, and the triple valve between two air outlets in clarifier top is carried out switching controls (control of triple valve also can realize by manual adjustments).
Operation principle of the present invention is: the air that purifies is not through behind the air filter, remove bigger suspended particulate, delivering into the air cleaning member main body by air conveyor again purifies, contact with the air cleaning catalyst in the clean unit main body, remove most of toxic gas and fine solid particle, cleaned air passes is discharged by the room air outlet by behind the triple valve.When catalyst is regenerated, lead in outdoor pipeline and the clarifier and communicate, the heating element heater in the catalyst memory is started working, and makes catalyst regneration at a certain temperature, and the harmful substance that produces in the regenerative process is by discharging with the outdoor outlet that communicates.
3, beneficial effect: the present invention compared with prior art, its remarkable advantage is:
1, can remove airborne COx, NOx, SOx, H in the confined space
2S, HF, HCl, Cl
2Deng pernicious gas;
2, can remove heavy metal substances such as airborne solid suspended particle and lead;
3, at the difference of varying environment internal contamination thing, adopt different catalyst, the air domestic to finite ring purifies.
Four, description of drawings:
Accompanying drawing is the schematic diagram of air purifying device for limited space of the present invention.
Five, the specific embodiment
The air purifying device for limited space that the present invention makes is made of air circulation unit, air cleaning member, catalyst cycling element and control module.Wherein air circulation unit is made of air filter 15, air conveyor 1, triple valve 2, indoor outlet 3 and outdoor outlet 4, and air filter 15 is made of cover plate, screen pack and outlet, and outlet 16 links to each other with the inlet of air conveyor 1.Air cleaning member is by purifying bed 5, purify bed shell 6, gas distributor 17, catalyst distributor 18 and humidistat 19, constituting purification bed 5 is supported and fixed in the purification bed shell 6 by bracing frame 25, below purification bed 5, be provided with the gas distributor 17 that links to each other with air inlet pipe 9, air inlet pipe 9 links to each other with the delivery outlet of air conveyor 1, above purification bed 5, be provided with the catalyst distributor 18 that links to each other with catalyst loop head 12, humidistat 19 is installed in the top of catalyst distributor 18, the top is the outlet 10 of Purge gas again, this outlet 10 links to each other with triple valve 2, and triple valve 2 links to each other with outdoor air outlet 4 with room air outlet 3.The catalyst cycling element is by catalyst memory 7, catalyst conveying device 8, catalyst heater 20, temp-controlling element 21, liquid level gauge 22, catalyst adds valve 23 and catalyst is removed valve 24, catalyst memory 7 is a rectangular configuration, purify bed shell 6 is installed in catalyst memory 7 by column 26 top, the below catalyst circulation outlet 13 that purifies bed shell 6 links to each other with the top inlet 14 of catalyst memory 7, catalyst heater 20, temp-controlling element 21 and liquid level gauge 22 are installed in the inside of catalyst memory 7, catalyst conveying device 8 is installed in the outside of catalyst memory 7, the input port of catalyst conveying device 8 links to each other with the catalyst delivery outlet 11 of catalyst memory 7, and the delivery outlet of catalyst conveying device 8 links to each other with the catalyst loop head 12 that purifies bed shell 6.Above catalyst memory 7, also be provided with fresh catalyst and add valve 23, below be provided with invalid catalyst and get rid of valve 24.
Air purifying device for limited space of the present invention, its concrete size is relevant with the gaseous mass of the space size that will purify, purification with requirement, provides three examples below:
Example 1:
One area is 20m
2, high for air quality grade in the room of 2.8m is lower than three grades (GB3095-1996), its major pollutants and content are: solid suspended particle, 0.6mg/m
3CO
2, 1200ppm; NO
2, 0.2mg/m
3, SO
2, 0.25mg/m
3Fluoride, 15 μ g/m
3, and other a small amount of pernicious gas.Adopt apparatus of the present invention, the clean unit inner major diameter is 150mm, purify bed and make by stainless steel cloth, and highly be 1000mm; Adopt alkaline catalyst, its quality group becomes: alkaline matter, 8.4%; Aromatic substance, 0.1%, all the other are water; The catalyst sprinkle density is 6.8m3/ (m
2H), air mass flow is 60m
3/ h.Start shooting after 1.5 hours, after testing, the room internal contamination substrate concentration after the purification is respectively: solid suspended particle, 0.01mg/m
3CO
2, 250ppm; NO
2, 0.02mg/m
3, SO
2, 0.01mg/m
3Fluoride, 1.0 μ g/m
3, air quality is better than the primary standard among the GB3095-1996.
2: one areas of example are 30m
2, high for air quality grade in the room of 2.8m is lower than three grades (GB3095-1996), its major pollutants and content are: solid suspended particle, 0.55mg/m
3CO, 25mg/m
3CO
2, 1100ppm; NO
2, 0.18mg/m
3, NO, 0.13mg/m
3SO
2, 0.25mg/m
3Fluoride, 13 μ g/m
3, and other a small amount of pernicious gas.Employing is with apparatus of the present invention of embodiment 1, and the clean unit inner major diameter is 180mm, and purify bed and make by stainless steel cloth, highly be 1200mm; Adopt weakly alkaline bioactivator, its quality group becomes: alkaline matter, 5.6%, bioactivator, 3.8%; Aromatic substance, 0.1%, all the other are water; The catalyst sprinkle density is 8.2m
3/ (m
2H), air mass flow is 100m
3/ h.Start shooting after 1.5 hours, after testing, the room internal contamination substrate concentration after the purification is respectively: solid suspended particle, 0.01mg/m
3CO, 1.3mg/m
3CO
2, 220ppm; NO
2, 0.015mg/m
3NO, 0.02mg/m
3SO
2, 0.01mg/m
3Fluoride, 1.2 μ g/m
3, air quality is better than the primary standard among the GB3095-1996.
Example 3:
One area is 150m
2, high for air quality grade in the room of 3m is lower than three grades (GB3095-1996), its major pollutants and content are: solid suspended particle, 0.65mg/m
3CO, 18mg/m
3CO
2, 1150ppm; NO
2, 0.22mg/m
3, NO, 0.14mg/m
3SO
2, 0.23mg/m
3Fluoride, 12 μ g/m
3, and other a small amount of pernicious gas.Employing is with apparatus of the present invention of embodiment 1, and the clean unit inner major diameter is 350mm, and purify bed and make by stainless steel cloth, highly be 1500mm; Adopt the bioactivator of alkalescence, its quality group becomes: alkaline matter, 6.2%, bioactivator, 4.5%; Aromatic substance, 0.2%, all the other are water; The catalyst sprinkle density is 12.5m
3/ (m
2H), air mass flow is 350m
3/ h.Behind the start 2.5h, after testing, the room internal contamination substrate concentration after the purification is respectively: solid suspended particle, 0.01mg/m
3CO, 1.2mg/m
3CO
2, 260ppm; NO
2, 0.012mg/m
3NO, 0.015mg/m
3SO
2, 0.01mg/m
3Fluoride, 1.0 μ g/m
3, air quality is better than the primary standard among the GB3095-1996.
Claims (12)
1, a kind of air purifying device for limited space is characterized in that this purifier is made of air circulation unit, air cleaning member, catalyst cycling element and control module; Air circulation unit comprises air conveyor (1), triple valve (2), room air outlet (3) and outdoor air outlet (4), air cleaning member comprises purification bed (5) and purifies bed shell (6) that the catalyst cycling element comprises catalyst memory (7) and catalyst conveying device (8); Catalyst heater (20) and temp-controlling element (21) are installed in the catalyst memory (7), the outlet of air conveyor (1) is connected with the air inlet pipe (9) that purifies bed shell (6), the blast pipe (10) that purifies bed shell (6) links to each other with triple valve (2), triple valve (2) links to each other with outdoor outlet (4) with indoor outlet (3), the catalyst outlet (11) of catalyst memory (7) links to each other with the inlet of catalyst conveying device (8), the outlet of catalyst conveying device (8) links to each other with the catalyst loop head (12) that purifies bed shell (6), the catalyst loop exit (13) that purifies bed shell (6) links to each other with the catalyst inlet (14) of catalyst memory (7), and control module is to air conveyor (1), catalyst conveying device (8), catalyst heater (20), temp-controlling element (21) and triple valve (2) are controlled.
2, air purifying device for limited space according to claim 1 is characterized in that described air circulation unit also comprises air filter (15), and the outlet (16) of this air filter (15) links to each other with the inlet of air conveyor (1).
3, air purifying device for limited space according to claim 1, it is characterized in that described air cleaning member also comprises gas distributor (17) and catalyst distributor (18), gas distributor (17) is arranged on the air that purifies bed (5) and enters end face, and catalyst distributor (18) is arranged on the catalyst that purifies bed (5) and enters end face.
4, air purifying device for limited space according to claim 1 is characterized in that described air cleaning member also comprises humidistat (19), and this humidistat (19) is installed in an end of the air outlet that purifies bed (5).
5, air purifying device for limited space according to claim 1 is characterized in that described catalyst memory (7) is provided with liquid level gauge (22), catalyst adds valve (23) and catalyst is removed valve (24).
6, air purifying device for limited space according to claim 3 is characterized in that described gas distributor (17) adopts cone eddy current type, two inlets circulation type, inner core flow-guiding type or umbellate form flow-guiding type structure.
7, air purifying device for limited space according to claim 3 is characterized in that described catalyst distributor (18) adopts slot type, trough box type, slotted disk or tray type structure.
8, air purifying device for limited space according to claim 1 is characterized in that described purification bed (5) is by metal or the nonmetal sphere of making, cylindricality, annular or chevron-shaped clean unit.
9, air purifying device for limited space according to claim 1, it is characterized in that described catalyst conveying device (8) adopts centrifugal pump, axial-flow pump, gear pump or reciprocating pump, this catalyst conveying device (8) both can be installed in the inside of catalyst memory (7), also can be installed in the outside of catalyst memory (7).
10, air purifying device for limited space according to claim 1 is characterized in that catalyst memory (7) by metal or nonmetal making, and its shape is square, cylindrical or square column type.
11, air purifying device for limited space according to claim 5 is characterized in that described catalyst heater (20) adopts quartzy heating rod, electrically heated rod or stove silk.
12, air purifying device for limited space according to claim 1 is characterized in that described catalyst is the additive that has the alkaline liquid phase substance or the weakly alkaline bioactivator of pleasant aromatic odor and play oxidation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021131147A CN1167910C (en) | 2002-06-04 | 2002-06-04 | Air purifying device for limited space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021131147A CN1167910C (en) | 2002-06-04 | 2002-06-04 | Air purifying device for limited space |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1414311A CN1414311A (en) | 2003-04-30 |
| CN1167910C true CN1167910C (en) | 2004-09-22 |
Family
ID=4742449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021131147A Expired - Fee Related CN1167910C (en) | 2002-06-04 | 2002-06-04 | Air purifying device for limited space |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1167910C (en) |
-
2002
- 2002-06-04 CN CNB021131147A patent/CN1167910C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1414311A (en) | 2003-04-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204478340U (en) | A kind of regenerative air cleaning system | |
| US6080281A (en) | Scrubbing of contaminants from contaminated air streams with aerogel materials with optional photocatalytic destruction | |
| CN206730734U (en) | A kind of industrial energy saving emission reduction formula fume purifier | |
| CN108295610B (en) | Non-filtration formula air purification equipment | |
| CN101590347A (en) | But the vertical indoor air cleaner of highly effectively removing volatile organic gas | |
| CN203886413U (en) | Fluidized TiO2 photo-catalytic oxidation type air purifier | |
| KR102116381B1 (en) | Wet air purification system for Public use facilities | |
| CN205965456U (en) | Organic waste gas integrated treating equipment | |
| CN210097283U (en) | Air purification device based on ultrasonic technology | |
| CN102716622A (en) | Integrated bag-type dust removal and fluidized adsorption device | |
| CN2558910Y (en) | Indoor air purifier | |
| CN107314456A (en) | Can highly effectively removing volatile organic gas vertical indoor air cleaner | |
| CN103007660A (en) | Oil mist purifying device with function of on-line regeneration | |
| CN108579412A (en) | The vertical indoor air cleaner of photochemical catalytic oxidation | |
| CN1167910C (en) | Air purifying device for limited space | |
| CN202432661U (en) | Multistage-filtration air conditioning purifier | |
| CN2386872Y (en) | Pneumatic desulfurization dust collector | |
| CN1333076A (en) | Bubble type air purifying method and purifier thereof | |
| CN108554042A (en) | Vertical indoor air ozone purifier | |
| CN103357234B (en) | Coal-fired flue gas deep purification processing device | |
| CN2631619Y (en) | Vortex fluid-bed waste-gas purifier | |
| CN211537057U (en) | Exhaust gas treatment system | |
| RU196278U1 (en) | DEVICE FOR PHOTOCATALYTIC GAS CLEANING | |
| CN201141662Y (en) | Louvered multifunctional air purifier | |
| CN203355550U (en) | Multiple pollutants combined control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040922 |