CN204502792U - A kind of biological filter deodorizing device - Google Patents
A kind of biological filter deodorizing device Download PDFInfo
- Publication number
- CN204502792U CN204502792U CN201520117121.4U CN201520117121U CN204502792U CN 204502792 U CN204502792 U CN 204502792U CN 201520117121 U CN201520117121 U CN 201520117121U CN 204502792 U CN204502792 U CN 204502792U
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- China
- Prior art keywords
- spray column
- prewashing
- shower
- biofilter
- water tank
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- Expired - Fee Related
Links
- 230000001877 deodorizing effect Effects 0.000 title claims abstract description 16
- 239000007921 spray Substances 0.000 claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 21
- 230000008569 process Effects 0.000 claims abstract description 17
- 239000007789 gas Substances 0.000 claims description 25
- 239000002912 waste gas Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 5
- 239000000945 filler Substances 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 12
- 239000003344 environmental pollutant Substances 0.000 description 9
- 244000005700 microbiome Species 0.000 description 9
- 231100000719 pollutant Toxicity 0.000 description 9
- 230000000813 microbial effect Effects 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 6
- 239000000706 filtrate Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 238000004332 deodorization Methods 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 240000007124 Brassica oleracea Species 0.000 description 2
- 235000003899 Brassica oleracea var acephala Nutrition 0.000 description 2
- 235000011301 Brassica oleracea var capitata Nutrition 0.000 description 2
- 235000001169 Brassica oleracea var oleracea Nutrition 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000002781 deodorant agent Substances 0.000 description 2
- WQOXQRCZOLPYPM-UHFFFAOYSA-N dimethyl disulfide Chemical compound CSSC WQOXQRCZOLPYPM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 231100000570 acute poisoning Toxicity 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000001458 anti-acid effect Effects 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 210000002249 digestive system Anatomy 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002054 inoculum Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 239000002207 metabolite Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 150000002898 organic sulfur compounds Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 210000000697 sensory organ Anatomy 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000000192 social effect Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a kind of biological filter deodorizing device, comprise: the air inlet be connected with exhaust gas source, and air inlet is connected to blower fan (6), blower and pipeline is connected to prewashing spray column, and this prewashing spray column comprises: the first water tank (201), and the first water tank connects water circulating pump (101), water circulating pump is connected to the first shower, and the first shower arranges multiple first spray nozzle above prewashing spray column, described exhaust gas source is by after the first prewashing spray column, enter into again a biofilter spray column, this equipment will change two sections in two sections, left and right in the past, guarantee to increase pre-wash section disposal ability when not increasing the area of plane, strengthen pre-wash section shower nozzle quantity and filler quantity.In the past equipment because of pre-wash section too little, process Wind Volume waste odour-gas time because of gas residence time section wind speed soon also untreated arrive second segment biology section.
Description
Technical field
The utility model relates to a kind of biological filter deodorizing device.
Background technology
Because the numerous areas of air quality on social production and social life produces important impact, quality and the protection of atmospheric environment are more and more subject to concern and the attention of people.The harm of the pollution of toxic and harmful to air, the health to people is increasingly by people are familiar with, and the development and usage of deodorization technology and system and the enforcement of engineering project can expand and the trend spread by arrest pollution effectively, improve the quality of air.
Along with the raising of Chinese Urbanization level, waste odour-gas process has become an important environmental protection investments project in China environmental protection field.Due to foul gas high volatility, easy diffusion, penetrating odor is large, may have a negative impact to the respiratory system of people, digestive system, internal system, nervous system and spirit, even the effluvium cognition of high concentration causes acute poisoning and death, therefore processes waste odour-gas and has huge social effect.
Utility model content
Goal of the invention of the present utility model is to provide a kind of biological filter deodorizing device.
It is as follows that the utility model solves the problems of the technologies described above taked technical scheme:
A kind of biological filter deodorizing device, comprise: the air inlet be connected with exhaust gas source, and air inlet is connected to blower fan (6), blower and pipeline is connected to prewashing spray column, and this prewashing spray column comprises: the first water tank (201), and the first water tank connects water circulating pump (101), water circulating pump is connected to the first shower, and the first shower arranges multiple first spray nozzle above prewashing spray column, described exhaust gas source is by after the first prewashing spray column, enter into again a biofilter spray column, this biofilter spray column comprises: the second water tank (202), second water tank is connected to humidification pump (102), and humidification pump is connected to the second shower, and the second shower arranges multiple second spray nozzle above the spray column of described biofilter, described biofilter spray column connects again a chimney (5), waste gas after the spray column process of biofilter, discharge from described chimney.
After the utility model takes such scheme, biotechnology is utilized to carry out filtration deodorization, its device is advanced, and deodorizing effect is good, this equipment will change two sections in two sections, left and right in the past, guarantee to increase pre-wash section disposal ability when not increasing the area of plane, strengthen pre-wash section shower nozzle quantity and filler quantity.In the past equipment because of pre-wash section too little, process Wind Volume waste odour-gas time because of gas residence time section wind speed soon also untreated arrive second segment biology section.
Other features and advantages of the utility model will be set forth in the following description, and, partly become apparent from description, or understand by implementing the utility model.The purpose of this utility model and other advantages realize by structure specifically noted in write description, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in detail, to make above-mentioned advantage of the present utility model definitely.
Fig. 1 is the structural representation of the utility model biological filter deodorizing device;
Fig. 2 is the structural representation of the utility model biological filter deodorizing device.
Detailed description of the invention
Below in conjunction with specific embodiment, the utility model is described in detail.
H
2s, NH
3, mercaptan, organic sulfur compound, the micro-organic component gas such as amine is the major pollutants that foul gas controls.
Major pollutants character
| Material | Hydrogen sulfide |
| Molecular formula | H 2S |
| Molecular weight | 34.08 |
| Olfact | 0.025～025μg/L |
| Molten/boiling point | —82.9℃/—61.8℃ |
| Physical property | Colourless gas, has rotten egg smell |
| Relative density (air) | 1.19 |
| Dissolubility | Can be water-soluble |
| Chemical property | The reactions such as oxidation can be there is |
| Material | Ammonia |
| Molecular formula | NH 3 |
| Molecular weight | 17.03 |
| Olfact | 0.5～1.0mg/m3 |
| Molten/boiling point | —77.8℃/—33.5℃ |
| Physical property | Colourless gas, intense stimulus smell |
| Relative density (air) | 0.5962 |
| Dissolubility | Very easily water-soluble, be dissolved in ether, ethanol |
| Chemical property | The reactions such as oxidation can be there is |
| Material | Methyl mercaptan |
| Molecular formula | CH 3SH |
| Molecular weight | 48.1 |
| Olfact | 0.0011～0.0021 ppm |
| Molten/boiling point | —123.1℃/7.6℃ |
| Physical property | Colourless gas, rotten cabbage taste |
| Relative density (air) | 1.66 |
| Dissolubility | Water insoluble, be dissolved in ethanol, ether etc. |
| Chemical property | The reactions such as oxidation can be there is |
| Material | Dimethyl disulfide |
| Molecular formula | (CH 3) 2S |
| Molecular weight | 62.13 |
| Olfact | 0.001ppm |
| Molten/boiling point | -83.2 ℃/38℃ |
| Physical property | Colourless gas, rotten cabbage taste |
| Relative density (air) | 2.14 |
2.3 gas discharging standards
1, " emission standard for odor pollutants " (GB14554-93 Zhong Chang circle (buffer zone edge) toxic emission secondary standard is met.
Discharge index (factory's circle secondary) after Odor control
2, process is rear without sense organ stink.
Specifically, as illustrated in fig. 1 and 2, a kind of biological filter deodorizing device, comprise: the air inlet be connected with exhaust gas source, and air inlet is connected to blower fan 6, blower and pipeline is connected to prewashing spray column, and this prewashing spray column comprises: the first water tank 201, and the first water tank connects water circulating pump 101, water circulating pump is connected to the first shower, and the first shower arranges multiple first spray nozzle above prewashing spray column, described exhaust gas source is by after the first prewashing spray column, enter into again a biofilter spray column, this biofilter spray column comprises: the second water tank 202, second water tank is connected to humidification pump 102, and humidification pump is connected to the second shower, and the second shower arranges multiple second spray nozzle above the spray column of described biofilter, described biofilter spray column connects again a chimney 5, waste gas after the spray column process of biofilter, discharge from described chimney.
Wherein, biofiltration technique have employed the compound action of liquid absorption and biological treatment.First foul smell is absorbed selectively by liquid (absorbent) and forms combined sewage, then by the effect of microorganism by contaminant degradation wherein.
Detailed process is: be first fixed on filler by the extraordinary microorganism species of artificial screening, when dusty gas is through the filling surface initial stage, those microorganism species of nutrient source can be obtained from dusty gas, under the suitable condition such as temperature, humidity, pH value, will be grown fast, be bred, and be formed biomembrane at filling surface, when foul smell is by therebetween, by microorganism adsorption and degraded after organic matter is absorbed by the water layer of biofilm surface, the water being purified regeneration is reused.
The essence of pollutant removal is by antimicrobial absorbent, metabolism and utilization using foul smell as nutriment.This process is the process of the mutual coordination of microorganism, and more complicated, it is made up of physics, chemistry, physical chemistry and biochemical reaction.
Biological deodorizing can be expressed as: pollutant+O
2→ cell metabolite+CO
2+ H
2o
Microbial deodorant process is divided into three steps:
(1) foul smell contacts with water and is dissolved in water;
(2) odor pollutant in the aqueous solution is by microorganism adsorption, absorption, and odor pollutant is transferred in microbial body from water;
(3) odor pollutant entering microbial cell is that Institute of Micro-biology decomposes, utilizes as nutriment, thus pollutant is removed.
Microbial deodorant utilizes microbial cell to the absorption of odorant, absorption and degradation function, to a kind of technique that foul smell processes.Main process is as follows: by collection conduit, and foul smell is collected deodorization device of biological filter by air exhauster, and foul smell carries out after humidification through humidifier, enters pond, biofilter body, after through the absorption of packing microbial, absorption and degraded, foul smell composition is removed.
Wherein, biofiltration technological process
Whole biological filter deodorizing system is primarily of pipe-line transportation system, biofilter, exhaust system and the control system composition of assisting whole deodoration system, and flow process is as follows:
Pipe-line system prewashing system biological filter tank exhaust system
Wherein, the humidification circulatory system (pre-wash pool)
Pre-wash pool is made up of parts such as air inlet distributor chamber, kitchen sink body, spray system, circulating water pool, exhaust collection room, water circulating pumps.Aspirate the foul smell of coming and be introduced into distributor chamber, after distribution, enter kitchen sink body, foul smell is sent at the bottom of pond, after gas distributor distribution, carries out mass transfer with under continuous in adverse current, the abundant contact conditions of spray liquid.Foul smell first carries out water washing spray pouring, removes dust, NH in foul smell
3and a small amount of H
2s, CH
3the gases such as SH, the water-soluble formation alkaline solution of ammonia, circulated sprinkling can remove the H in foul smell
2s, a small amount of organic odor pollution thing of simultaneously stability.Spray washing pond is provided with besel and inspection manhole so that personnel carry out monitoring that whether the working condition of scrubbing tower is normal.In pond, spray liquid recycles, and in use has partial loss and consumption, needs to regularly replace spray liquid.Spray pond also can add flexibly according to actual condition or change chemical absorbent, but must notice that chemical wastewater brings secondary pollution.
Wherein, biological deodorizing device main body:
Biological deodorizing device master is the biofilter of closed, takes point source form of export, and pond body material is fiberglass.The filtrate supporting layer of device interior adopts the glass fiber reinforced grid-like panel that size is suitable, and body top, pond is provided with access hole 500mm × 500mm, exhaust outlet, and side is provided with observation panel, air inlet etc.
Wherein, biofilter material
The main part of biological deodorizing is filtrate, and a kind of good carrier material must meet: the abundant species of allowing the microorganism of growth; Growth fraction surface area is perched for microorganism provides larger; Nutritional labeling rationally (N, P, K and trace element); The water imbibition had, self free from extraneous odour; Excellent adsorption, even structure, voidage is large; Material is easy to get and low price; Ageing-resistant, run, maintenance is simple.
This project biofilter material adopts efficient volcanic rock, and the advantage of this biologic packing material comprises:
1) anti acid alkali performance is strong;
2) particle diameter of filter medium 15 ~ 50mm, optional;
3) surface area of filtrate is large, and biomembrane attachment, close to 1mm, is convenient in aperture;
4) voidage is high, can reduce air loss;
5) mechanical strength is high, and water resistant power shear ability is strong;
6), after this filler is that acidity causes the contact of smelly compound, can not occur rotten or peel off, the life-span is lasting.
Following function can be realized:
1) as the carrier of organic microbial;
2) for microorganism provides moist ecological environment;
3) for foul smell polymer provides suction-operated surface;
4) volcanic filling material has measure and the ability of adjust ph, without the need to adding acid & alkali liquid during operation.
5) for biological inoculum provides nutrition.
This biologic packing material can ensure the service life of more than 10 years, not easily hardens, and along with the change contraction or expansion of water content, can not can not reduce service life or lose using function because of the implantation again of bacterial classification.
Wherein, filtrate support system
Adopt the anticorrosion filter plate of glass steel material to support the weight of filtrate in pond body inside, filter plate leave must gap to ensure that foul smell evenly passes through bacteria filter system.And anticorrosion filter screen is set on anticorrosion filter plate, to ensure that filtrate falls in gas booking groove.
After the utility model takes such scheme, filtration deodorization is carried out based on biomaterial, there is extraordinary technique effect, this equipment will change two sections in two sections, left and right in the past, guarantee to increase pre-wash section disposal ability when not increasing the area of plane, strengthen pre-wash section shower nozzle quantity and filler quantity.In the past equipment because of pre-wash section too little, process Wind Volume waste odour-gas time because of gas residence time section wind speed soon also untreated arrive second segment biology section.
Last it is noted that the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although be described in detail the utility model with reference to previous embodiment, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (1)
1. a biological filter deodorizing device, it is characterized in that, comprise: the air inlet be connected with exhaust gas source, and air inlet is connected to blower fan (6), blower and pipeline is connected to prewashing spray column, and this prewashing spray column comprises: the first water tank (201), and the first water tank connects water circulating pump (101), water circulating pump is connected to the first shower, and the first shower arranges multiple first spray nozzle above prewashing spray column, described exhaust gas source is by after the first prewashing spray column, enter into again a biofilter spray column, this biofilter spray column comprises: the second water tank (202), second water tank is connected to humidification pump (102), and humidification pump is connected to the second shower, and the second shower arranges multiple second spray nozzle above the spray column of described biofilter, described biofilter spray column connects again a chimney (5), waste gas after the spray column process of biofilter, discharge from described chimney.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520117121.4U CN204502792U (en) | 2015-02-27 | 2015-02-27 | A kind of biological filter deodorizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520117121.4U CN204502792U (en) | 2015-02-27 | 2015-02-27 | A kind of biological filter deodorizing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204502792U true CN204502792U (en) | 2015-07-29 |
Family
ID=53700796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520117121.4U Expired - Fee Related CN204502792U (en) | 2015-02-27 | 2015-02-27 | A kind of biological filter deodorizing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204502792U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106731780A (en) * | 2017-03-21 | 2017-05-31 | 上海兰宝环保科技有限公司 | Bacteria bed waste gas purification apparatus |
| CN107308796A (en) * | 2017-08-08 | 2017-11-03 | 苏州耐德新明和工程技术有限公司 | A kind of composite exhaust gas processor |
-
2015
- 2015-02-27 CN CN201520117121.4U patent/CN204502792U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106731780A (en) * | 2017-03-21 | 2017-05-31 | 上海兰宝环保科技有限公司 | Bacteria bed waste gas purification apparatus |
| CN107308796A (en) * | 2017-08-08 | 2017-11-03 | 苏州耐德新明和工程技术有限公司 | A kind of composite exhaust gas processor |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 |
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| CF01 | Termination of patent right due to non-payment of annual fee |