CN113952804A - Oil-gas treatment device and method for smoke exhaust fan of main oil tank of steam turbine oil - Google Patents
Oil-gas treatment device and method for smoke exhaust fan of main oil tank of steam turbine oil Download PDFInfo
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- CN113952804A CN113952804A CN202111400370.0A CN202111400370A CN113952804A CN 113952804 A CN113952804 A CN 113952804A CN 202111400370 A CN202111400370 A CN 202111400370A CN 113952804 A CN113952804 A CN 113952804A
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- 239000000779 smoke Substances 0.000 title claims abstract description 85
- 239000003921 oil Substances 0.000 title claims abstract description 84
- 239000010736 steam turbine oil Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000002808 molecular sieve Substances 0.000 claims abstract description 25
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 7
- 231100000719 pollutant Toxicity 0.000 claims abstract description 7
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 18
- 238000004458 analytical method Methods 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 24
- 239000000126 substance Substances 0.000 abstract description 5
- 231100000331 toxic Toxicity 0.000 abstract description 4
- 230000002588 toxic effect Effects 0.000 abstract description 4
- 239000002912 waste gas Substances 0.000 abstract description 4
- 238000001179 sorption measurement Methods 0.000 description 8
- 239000012298 atmosphere Substances 0.000 description 6
- 239000010802 sludge Substances 0.000 description 3
- HGINCPLSRVDWNT-UHFFFAOYSA-N Acrolein Chemical compound C=CC=O HGINCPLSRVDWNT-UHFFFAOYSA-N 0.000 description 2
- FMMWHPNWAFZXNH-UHFFFAOYSA-N Benz[a]pyrene Chemical compound C1=C2C3=CC=CC=C3C=C(C=C3)C2=C2C3=CC=CC2=C1 FMMWHPNWAFZXNH-UHFFFAOYSA-N 0.000 description 2
- 150000001299 aldehydes Chemical class 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 208000019693 Lung disease Diseases 0.000 description 1
- 206010044302 Tracheitis Diseases 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 208000026106 cerebrovascular disease Diseases 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000002526 effect on cardiovascular system Effects 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Chemical group CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 206010023332 keratitis Diseases 0.000 description 1
- 150000002596 lactones Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 206010039083 rhinitis Diseases 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 239000010723 turbine oil Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0036—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Combustion & Propulsion (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses an oil-gas treatment device and a method for a smoke exhaust fan of a main oil tank of steam turbine oil.A smoke exhaust fan sucks oil smoke exhausted from the main oil tank, the oil smoke is firstly absorbed by a molecular sieve filter layer and then absorbed by a broad leaf mud filter layer, the molecular sieve filter layer absorbs and the broad leaf mud filter layer decomposes the absorbed tail gas, the tail gas is detected by an oil-smoke detector, an upper limit a is set for the oil-smoke detector according to emission standards, and if the effective hour emission average value of pollutants in the tail gas is smaller than the upper limit of the oil-smoke detector, the oil-smoke detector cannot give an alarm and can normally exhaust the pollutants; if the upper limit of the oil smoke detector is larger than the upper limit of the oil smoke detector, the oil smoke detector can automatically alarm, and the molecular sieve filter layer and the broad leaf mud filter layer need to be replaced at the moment. The invention can effectively adsorb and decompose toxic and harmful substances in the waste gas of the steam turbine oil, and reduce the harm of the direct emission of the waste gas to the environment and human body.
Description
Technical Field
The invention belongs to the technical field of a smoke exhaust fan system of a main oil tank of steam turbine oil in a power plant, and particularly relates to an oil-gas treatment device and method for the smoke exhaust fan system of the main oil tank of the steam turbine oil.
Background
In the operation process of a generating enterprise unit, turbine oil is used as a lubricating and hydraulic medium in equipment and mainly plays roles in lubricating, sealing, radiating, transmitting power and the like. During the long-term operation of the equipment, under the action of various factors, the steam turbine oil inevitably generates oil smoke, and a large amount of ester groups, carbonyl groups and ether bonds exist in oil smoke components. The substances are directly sucked out by the smoke exhaust fan and then discharged into the atmosphere, which can cause harm to the environment, especially surface water, soil, atmosphere, drinking water and the like.
The main components of the oil fume of the steam turbine are aldehyde, ketone, hydrocarbon, fatty acid, alcohol, aromatic compounds, ketone, lactone, heterocyclic compounds and the like, acrolein in the oil fume is discharged into the atmosphere, and can generate strong stimulation to mucous membranes of eyes, nose and throat, and diseases such as chronic keratitis, rhinitis, pharyngolaryngitis, tracheitis and the like can be caused; toxic benzopyrene in the steam turbine oil smoke can cause human tissues to be diseased, and if the toxic benzopyrene is contacted for a long time, the incidence rate of lung diseases can be increased by 2-3 times; the fatty oxide in the oil smoke is easy to cause cardiovascular and cerebrovascular diseases of middle-aged and old people.
At present, the smoke exhaust fan of the main oil tank of the steam turbine oil directly exhausts the steam turbine oil smoke into the atmosphere without further treatment after the steam turbine oil smoke is exhausted, the steam turbine oil smoke is discharged for a long time, and the steam turbine oil smoke is not detected in any environment, cannot be judged whether to meet the emission standard, and can generate harm to the environment and human bodies.
Disclosure of Invention
In order to overcome the technical problems, the invention provides an oil-gas treatment device and method for a smoke exhaust fan of a main oil tank of steam turbine oil, on one hand, tail gas of the main oil tank of the steam turbine oil can be adsorbed and purified before being discharged; on the other hand, a detection device is arranged in the smoke exhaust fan system, so that the effective hour mean value of specific components in the hourly discharged substances can be detected in real time,
if the standard is met, the gas can be directly discharged into the atmosphere, and if the standard is not met, the gas enters a secondary adsorption chamber, and is discharged into the atmosphere after secondary adsorption.
In order to achieve the purpose, the invention adopts the technical scheme that:
a steam turbine oil main tank smoke exhaust fan oil gas processing device comprises a molecular sieve filter layer 3, a leaf mud filter layer 4 and an oil smoke detector 5 which are sequentially arranged on a smoke exhaust fan 2 on a main oil tank 1.
The molecular sieve filtering layer 3 is a ZSM-5 molecular sieve.
The wide leaf mud filter layer 4 has a spatial net-shaped three-dimensional structure.
The 5 models of the oil smoke detectors are MH3050 samplers.
A steam turbine oil main oil tank smoke exhaust fan oil gas processing method, after the oil smoke exhausted in the main oil tank 1 is sucked by the smoke exhaust fan 2, at first via the molecular sieve filter layer 3 to absorb, then via the broad leaf mud filter layer 4 to absorb, via the molecular sieve filter layer 3 and the broad leaf mud filter layer 4 to decompose the absorbed tail gas, and then via the oil smoke detector 5 to detect, according to the emission standard set up the upper limit a to the oil smoke detector 5, if the effective hour emission mean value of the pollutant in the tail gas is less than the upper limit of the oil smoke detector 5, the oil smoke detector 5 will not alarm, the normal emission can be enough; if the upper limit of the oil smoke detector 5 is larger than the upper limit of the oil smoke detector 5, the oil smoke detector 5 can automatically alarm, and the molecular sieve filter layer 3 and the broad leaf mud filter layer 4 need to be replaced at the moment.
The oil smoke detector 5 is an integrated structure and comprises a sampling structure, an analysis structure and a display structure; when needs detect tail gas, open the 5 switches of oil smoke detector, the operation of air sampling pump, the oil smoke is gathered to the sample structure beginning, and the oil smoke of gathering gets into analysis structure, carries out the testing and analysis to composition wherein, and the analysis result can show in the display screen that shows the structure in real time, among the analysis structure, can be according to accumulative total detection volume and accumulative total testing time, calculates effective hour and discharges the mean value, and accumulative total detection volume/accumulative total testing time are effective hour and discharge the mean value promptly.
The molecular sieve filtering layer 3 is a ZSM-5 molecular sieve, and has a good adsorption effect on polar compounds of oil smoke due to the large specific surface area and the high adsorption capacity.
The wide leaf mud filter layer 4 has a spatial net-shaped three-dimensional structure.
The broad leaf mud filter layer 4 is used for decomposing harmful gas molecules such as formaldehyde and the like in the material, and double helix nano factors decompose formaldehyde molecules locked inside.
The invention has the beneficial effects that:
the invention can effectively adsorb and decompose toxic and harmful substances in the waste gas of the steam turbine oil, and reduce the harm of the direct emission of the waste gas to the environment and human body.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic flow chart of the method of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The adsorption chamber comprises two layers of main adsorption materials, as shown in fig. 1, after the oil smoke exhausted from a main oil tank 1 is sucked by a smoke exhaust fan 2, the oil smoke is firstly adsorbed by a molecular sieve filter layer 3, preferably a ZSM-5 molecular sieve, and has a good adsorption effect on polar compounds of the oil smoke due to the large specific surface area and the high adsorption capacity; and then the sludge is absorbed by a broad leaf sludge filter layer 4, and the broad leaf sludge is a material which can absorb, lock and decompose harmful substances. The broad leaf mud has a spatial net-shaped three-dimensional structure, can decompose harmful gas molecules such as formaldehyde and the like in the material, and the double-helix nano-factors in the material can decompose the formaldehyde molecules locked in the material, so that the broad leaf mud has the function of locking and decomposing the formaldehyde, thereby achieving the purpose of decomposing aldehyde toxic substances in the tail gas of the steam turbine oil. The tail gas adsorbed by the molecular sieve filter layer 3 and decomposed and adsorbed by the broad leaf mud filter layer 4 is detected by an oil smoke detector, an upper limit a is set for the oil smoke detector according to emission standards, if the effective hour emission average value of pollutants in the tail gas is smaller than the upper limit of the detector, the detector does not give an alarm, and the pollutants are normally discharged; if the upper limit of the detector is larger than the upper limit of the detector, the detector can automatically alarm, and the filter layer 3 and the broad leaf mud filter layer 4 need to be replaced at the moment.
A steam turbine oil main oil tank smoke exhaust fan oil gas processing method, after the oil smoke exhausted in the main oil tank 1 is sucked by the smoke exhaust fan 2, at first via the molecular sieve filter layer 3 to absorb, then via the broad leaf mud filter layer 4 to absorb, via the molecular sieve filter layer 3 and the broad leaf mud filter layer 4 to decompose the absorbed tail gas, and then via the oil smoke detector 5 to detect, according to the emission standard set up the upper limit a to the oil smoke detector 5, if the effective hour emission mean value of the pollutant in the tail gas is less than the upper limit of the oil smoke detector 5, the oil smoke detector 5 will not alarm, the normal emission can be enough; if the upper limit of the oil smoke detector 5 is larger than the upper limit of the oil smoke detector 5, the oil smoke detector 5 can automatically alarm, and the molecular sieve filter layer 3 and the broad leaf mud filter layer 4 need to be replaced at the moment.
The oil smoke detector 5 is an integrated structure and comprises a sampling structure, an analysis structure and a display structure; when needs detect tail gas, open the 5 switches of oil smoke detector, the operation of air sampling pump, the oil smoke is gathered to the sample structure beginning, and the oil smoke of gathering gets into analysis structure, carries out the testing and analysis to composition wherein, and the analysis result can show in the display screen that shows the structure in real time, among the analysis structure, can be according to accumulative total detection volume and accumulative total testing time, calculates effective hour and discharges the mean value, and accumulative total detection volume/accumulative total testing time are effective hour and discharge the mean value promptly.
Claims (9)
1. The utility model provides a steam turbine oil main tank smoke exhaust fan oil gas processing apparatus which characterized in that sets gradually molecular sieve filter bed (3), broad leaf mud filter bed (4) and oil smoke detector (5) on smoke exhaust fan (2) on main tank (1).
2. The steam turbine oil main tank smoke exhaust fan oil and gas treatment device as claimed in claim 1, wherein the molecular sieve layer (3) is a ZSM-5 molecular sieve.
3. The steam turbine oil main tank smoke exhaust fan oil and gas treatment device as claimed in claim 1, wherein the wide leaf filter layer (4) has a spatial net-shaped three-dimensional structure.
4. The steam turbine oil main tank smoke exhaust fan oil and gas treatment device as claimed in claim 1, characterized in that the type of the oil and gas detector (5) is MH3050 type sampler.
5. The use method of the oil-gas treatment device of the exhaust fan of the main oil tank of the steam turbine oil according to any one of claims 1 to 4 is characterized in that after being sucked by the exhaust fan (2), oil smoke exhausted from the main oil tank (1) is firstly absorbed by the molecular sieve filter layer (3), then absorbed by the broad leaf mud filter layer (4), absorbed tail gas is absorbed by the molecular sieve filter layer (3) and decomposed by the broad leaf mud filter layer (4), and then detected by the oil-smoke detector (5), an upper limit a is set for the oil-smoke detector (5) according to emission standards, if the effective hourly emission mean value of pollutants in the tail gas is smaller than the upper limit of the oil-smoke detector (5), the oil-smoke detector (5) does not alarm and can normally exhaust the oil smoke; if the upper limit of the oil smoke detector (5) is larger than the upper limit of the oil smoke detector, the oil smoke detector (5) can automatically alarm, and the molecular sieve filter layer (3) and the broad leaf mud filter layer (4) need to be replaced at the moment.
6. The use method of the oil and gas treatment device of the exhaust fan of the main oil tank of the steam turbine oil as claimed in claim 5, characterized in that the oil and gas detector (5) is of an integrated structure comprising a sampling structure, an analysis structure and a display structure; when needs detect tail gas, open oil smoke detector (5) switch, the operation of air sampling pump, the oil smoke begins to gather by the sampling structure, the oil smoke that gathers gets into analysis structure, carry out the analysis that detects to composition wherein, the analysis result can show in the display screen that shows the structure in real time, among the analysis structure, can be according to accumulative detection volume and accumulative detection time, calculate effective hour and discharge the mean value, accumulative detection volume/accumulative detection time promptly are effective hour and discharge the mean value.
7. The use method of the steam turbine oil main tank smoke exhaust fan oil and gas treatment device is characterized in that the molecular sieve layer (3) is a ZSM-5 molecular sieve.
8. The use method of the oil and gas treatment device of the exhaust fan of the main oil tank of the steam turbine oil as claimed in claim 5, wherein the wide leaf filter layer (4) has a spatial net-shaped three-dimensional structure.
9. The use method of the oil and gas treatment device of the exhaust fan of the main oil tank of the steam turbine oil as claimed in claim 5, wherein the broad leaf mud filter layer (4) is used for decomposing harmful gas molecules such as formaldehyde in the material, and the double helix nano-factor decomposes the formaldehyde molecules locked in the material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111400370.0A CN113952804A (en) | 2021-11-19 | 2021-11-19 | Oil-gas treatment device and method for smoke exhaust fan of main oil tank of steam turbine oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111400370.0A CN113952804A (en) | 2021-11-19 | 2021-11-19 | Oil-gas treatment device and method for smoke exhaust fan of main oil tank of steam turbine oil |
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| Publication Number | Publication Date |
|---|---|
| CN113952804A true CN113952804A (en) | 2022-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111400370.0A Pending CN113952804A (en) | 2021-11-19 | 2021-11-19 | Oil-gas treatment device and method for smoke exhaust fan of main oil tank of steam turbine oil |
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| CN (1) | CN113952804A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102284223A (en) * | 2011-06-14 | 2011-12-21 | 钟志杰 | Multifunctional indoor air purifier |
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| CN210674645U (en) * | 2019-06-04 | 2020-06-05 | 杭州余杭特种风机有限公司 | Oil smoke separator system at outlet of smoke exhaust fan of main oil tank of steam turbine |
| CN213101533U (en) * | 2020-06-12 | 2021-05-04 | 浙江徐氏厨房设备有限公司 | Intelligent kitchen smoke exhaust purification system |
| CN113058383A (en) * | 2021-05-10 | 2021-07-02 | 中国科学院过程工程研究所 | Oil fume adsorption catalytic purification device and purification method |
| CN113198301A (en) * | 2021-06-01 | 2021-08-03 | 江苏省环境工程技术有限公司 | Deep purification method for VOCs and particulate matters in dry tail gas of artificial board industry |
| CN216170831U (en) * | 2021-11-19 | 2022-04-05 | 西安热工研究院有限公司 | Steam turbine oil main tank smoke exhaust fan oil gas processing apparatus |
-
2021
- 2021-11-19 CN CN202111400370.0A patent/CN113952804A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102284223A (en) * | 2011-06-14 | 2011-12-21 | 钟志杰 | Multifunctional indoor air purifier |
| CN203929752U (en) * | 2014-06-26 | 2014-11-05 | 东莞市网拓信息科技有限公司 | A kind of cooking fume equipment |
| CN104456758A (en) * | 2014-10-31 | 2015-03-25 | 苏州博菡环保科技有限公司 | Portable air purifier |
| CN205042339U (en) * | 2015-02-03 | 2016-02-24 | 合肥通甬环保设备有限公司 | Cooking fume waste gas purification online monitoring device |
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