CN209362171U - A kind of waste gas purification wash mill of environmental protection - Google Patents
A kind of waste gas purification wash mill of environmental protection Download PDFInfo
- Publication number
- CN209362171U CN209362171U CN201822225633.9U CN201822225633U CN209362171U CN 209362171 U CN209362171 U CN 209362171U CN 201822225633 U CN201822225633 U CN 201822225633U CN 209362171 U CN209362171 U CN 209362171U
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- CN
- China
- Prior art keywords
- tower body
- fixedly installed
- collector box
- waste gas
- gas purification
- 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
- 238000000746 purification Methods 0.000 title claims abstract description 27
- 239000002912 waste gas Substances 0.000 title claims abstract description 21
- 230000007613 environmental effect Effects 0.000 title claims abstract description 19
- 239000007789 gas Substances 0.000 claims abstract description 36
- 239000003463 adsorbent Substances 0.000 claims abstract description 11
- 238000001179 sorption measurement Methods 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 17
- 241000883990 Flabellum Species 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 abstract description 9
- 239000000243 solution Substances 0.000 description 13
- 230000002000 scavenging effect Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- 238000000889 atomisation Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000011897 real-time detection Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 206010013911 Dysgeusia Diseases 0.000 description 1
- 206010019233 Headaches Diseases 0.000 description 1
- 206010047700 Vomiting Diseases 0.000 description 1
- 230000004596 appetite loss Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 210000002249 digestive system Anatomy 0.000 description 1
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 208000019017 loss of appetite Diseases 0.000 description 1
- 235000021266 loss of appetite Nutrition 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 210000004994 reproductive system Anatomy 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a kind of waste gas purification wash mills of environmental protection, are related to waste gas purification technical field.The waste gas purification wash mill of the environmental protection, including rotating adsorbent equipment, extractor fan and tower body, the tower body side, which is fixed by the bracket, is equipped with collector box, collector box offers air inlet far from the side of tower body, extractor fan is provided in collector box, one end of air inlet pipe is fixedly installed at the top of collector box, exhaustion plate is fixedly installed with inside tower body, cavity is begun with inside exhaustion plate, exhaustion plate bottom offers several ventholes, the cross-sectional area of exhaustion plate is less than the cross-sectional area of tower body, the other end of air inlet pipe is through to inside tower body and connect with exhaustion plate, rotation adsorbent equipment is provided on tower body, the utility model structure is simple, it is easy to operate, multiple washing, purifying can be carried out to exhaust gas, effectively improve purification efficiency, to efficiently reduce the influence to environment.
Description
Technical field
The utility model relates to waste gas purification technical field, specially a kind of waste gas purification wash mill of environmental protection.
Background technique
With the development of modernization industry, to social creativity great riches, while the ecological balance is also destroyed.Environment
Crisis is more and more heavier, hinders social civilization development process.Therefore protection environment, the Environment control task of top priority, is from country
It is all played an active part in wherein to enterprise to individual, starts whole society's environmental protection upsurge, bring huge pressure and the sense of duty to enterprise,
In actual life, there are many substance of exhaust gas source stench, and source is also wide, mainly by the heating of organic matter or burning to human health
It causes to seriously endanger with ecological environment, less serious case makes one not feeling good, and headache, giddy, Nausea and vomiting, loss of appetite and essence occurs
Mind does not collect medium symptom, and the heavy then respiratory system to people, the circulatory system, digestive system and reproductive system cause different degrees of poison
Evil.
General waste gas purification wash mill, purifies exhaust gas only with the mode of cleaning solution and exhaust gas contact,
Clean-up effect is to be improved, and the air after leading to discharge does not simultaneously meet purification requirement, very big influence is caused to environment, simultaneously
Exhaust gas needs to be pumped into using exhaust fan to purification device, and exhaust gas causes certain corrosion to the motor of exhaust fan, thus shadow
Ring the service life of suction fan motor.
Utility model content
The purpose of this utility model is to provide a kind of waste gas purification wash mills of environmental protection, to solve above-mentioned background technique
The problem of middle proposition.
To achieve the above object, the utility model provides the following technical solutions: a kind of waste gas purification wash mill of environmental protection,
Including rotation adsorbent equipment, extractor fan and tower body, the tower body side, which is fixed by the bracket, is equipped with collector box, and collector box is remote
Side from tower body offers air inlet, and extractor fan is provided in collector box, is fixedly installed with air inlet pipe at the top of collector box
One end is fixedly installed with exhaustion plate inside tower body, cavity is begun with inside exhaustion plate, exhaustion plate bottom offers several outlets
Hole, the cross-sectional area of exhaustion plate are less than the cross-sectional area of tower body, and the other end of air inlet pipe is through to inside tower body and exhaust
Plate connects, and is provided with rotation adsorbent equipment on tower body, is fixedly installed with installing pipe in tower body inner wall, if installation bottom of the tube offers
Water hole is done, installation bottom of the tube is fixedly installed with atomizer, and tower body is equipped with water circulating pump, recirculated water far from the side of collector box
By being connected to inside pipeline and tower body, water circulating pump water outlet is through in tower body by pipeline to be connected the water inlet end of pump with installing pipe
It is logical, it is fixedly installed with drainpipe on the outer wall of tower body side, is connected to inside drainpipe and tower body, valve is fixedly installed on drainpipe
, it is fixedly installed with water injection pipe on the outer wall of the tower body other side, is connected to inside water injection pipe and tower body, is fixedly installed with out at the top of tower body
Air hose is fixedly installed with the second one-way gas flow valve on discharge pipe, and discharge pipe side is fixedly installed with one end of muffler, muffler
The other end and the top of air inlet pipe connect, discharge pipe is connected to by muffler with air inlet pipe, and the is fixedly installed on muffler
One one-way gas flow valve.
Preferably, the extractor fan includes the second motor, connecting shaft and turbine flabellum, and connecting shaft is rotatablely installed in gas collection
For box on the side inner wall of tower body, connecting shaft is fixedly installed with turbine flabellum, the fixed peace of the second motor far from one end of tower body
Loaded on collector box on a side external surface of tower body, the output shaft of the second motor by shaft coupling be through to inside collector box with
One end of connecting shaft connects.
Preferably, the model M2QA80M4A of second motor.
Preferably, the rotation adsorbent equipment includes adsorption plate, rotating bar and first motor, and rotating bar is rotatablely installed in tower
On the side inner wall of body, be fixedly installed with adsorption plate in rotating bar, first motor be fixedly mounted and tower body far from collector box one
On side external surface, the output shaft of first motor is through to inside tower body by shaft coupling to be connect with one end of rotating bar.
Preferably, the model Y2-1 of the first motor.
Preferably, activated carbon adsorption plate is fixedly installed in the tower body inner wall, activated carbon adsorption plate is located at installing pipe
Surface.
Preferably, PH detector is fixedly installed on the discharge pipe.
Compared with prior art, the utility model has the beneficial effects that
(1), the waste gas purification wash mill of the environmental protection passes through the second motor, connecting shaft, turbine flabellum, collector box, air inlet
Mouth is used cooperatively with air draft plate, and exhaust gas can not only be pumped into tower body, so that exhaust gas is contacted with scavenging solution, to useless
Harmful substance in gas carries out washing, purifying, reduces the nuisance in exhaust gas, while exhaust gas can also be avoided to the second blower
It causes to corrode, is conducive to extend the service life of the second blower.
(2), the waste gas purification wash mill of the environmental protection is used cooperatively, energy by first motor, rotating bar, adsorption plate
The nuisance in exhaust gas is enough further reduced, it, can be to absorption by scavenging solution when adsorption plate turns to below rotating bar
Plate is cleaned, to be conducive to be promoted the service life and adsorption effect of adsorption plate, is conducive to improve clean-up effect, active carbon
Adsorption plate carries out taste removal to the rear air repeatedly purified.
(3), the pH value of air is discharged by PH detector real-time detection, works as row for the waste gas purification wash mill of the environmental protection
When air is unsatisfactory for emission request out, by being used cooperatively for the first one-way gas flow valve, air is back to air inlet pipe by muffler,
It is again introduced into tower body and carries out washing, purifying, multiple washing, purifying is carried out to air, so that clean-up effect is further increased,
To reduce the influence to environment.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the front view of the utility model.
Fig. 3 is the side view of adsorption plate in the utility model.
Fig. 4 is the structural schematic diagram of air draft plate in the utility model.
In figure: 1 rotation adsorbent equipment, 101 adsorption plates, 102 rotating bars, 103 first motors, 2 extractor fans, 201 second
Motor, 202 connecting shafts, 203 turbine flabellums, 3 discharge pipes, 4 first one-way gas flow valves, 5 mufflers, 6 tower bodies, 7 atomizers, 8
Air inlet pipe, 9 collector boxs, 10 drainpipes, 11 water circulating pumps, 12 water injection pipes, 13 installing pipes, 14 activated carbon adsorption plates, 15 PH detection
Device, 16 air inlets, 17 second one-way gas flow valves, 18 exhaustion plates.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-4 is please referred to, the utility model provides a kind of technical solution: a kind of waste gas purification wash mill of environmental protection, packet
Rotation adsorbent equipment 1, extractor fan 2 and tower body 6 are included, 6 side of tower body, which is fixed by the bracket, is equipped with collector box 9, and collector box 9 is remote
Side from tower body 6 offers air inlet 16, and extractor fan 2 is provided in collector box 9, and extractor fan 2 includes the second motor
201, connecting shaft 202 and turbine flabellum 203, the rotational installation of connecting shaft 202 on the side inner wall of tower body 6, connect in collector box 9
Spindle 202 is fixedly installed with turbine flabellum 203 far from one end of tower body 6, and it is close that the second motor 201 is fixedly installed in collector box 9
On one side external surface of tower body 6, the model M2QA80M4A of the second motor 201, the output shaft of the second motor 201 passes through shaft coupling
Device is through to 9 inside of collector box and connect with one end of connecting shaft 202, and one end of air inlet pipe 8 is fixedly installed at the top of collector box 9,
It is fixedly installed with exhaustion plate 18 inside tower body 6, cavity is begun with inside exhaustion plate 18,18 bottom of exhaustion plate offers several outlets
Hole, the cross-sectional area of exhaustion plate 18 are less than the cross-sectional area of tower body 6, the other end of air inlet pipe 8 be through to 6 inside of tower body with
Exhaustion plate 18 connects, and rotation adsorbent equipment 1 is provided on tower body 6, and rotation adsorbent equipment 1 includes adsorption plate 101, rotating bar 102
With first motor 103, rotating bar 102 is rotatablely installed on the side inner wall of tower body 6, and absorption is fixedly installed in rotating bar 102
Plate 101, first motor 103 are fixedly mounted with tower body 6 far from a side external surface of collector box 9, the model of first motor 103
Y2-1, the output shaft of first motor 103 are through to 6 inside of tower body by shaft coupling and connect with one end of rotating bar 102, tower body 6
Installing pipe 13 is fixedly installed on inner wall, 13 bottom of installing pipe offers several apopores, and 13 bottom of installing pipe is fixedly installed with
Atomizer 7, tower body 6 are equipped with water circulating pump 11 far from the side of collector box 9, and the water inlet end of water circulating pump 11 passes through pipeline and tower
It is connected to inside body 6,11 water outlet of water circulating pump is through in tower body 6 by pipeline and is connected to installing pipe 13,6 side outer wall of tower body
On be fixedly installed with drainpipe 10, be connected to inside drainpipe 10 and tower body 6, be fixedly installed with valve on drainpipe 10, tower body 6 is another
It is fixedly installed with water injection pipe 12 on the outer wall of side, is connected to inside water injection pipe 12 and tower body 6, is fixedly installed with work on 6 inner wall of tower body
Property charcoal adsorption plate 14, activated carbon adsorption plate 14 is located at the surface of installing pipe 13, discharge pipe 3 is fixedly installed at the top of tower body 6, out
It is fixedly installed with PH detector 15 on air hose 3, the second one-way gas flow valve 17 is fixedly installed on discharge pipe 3,3 side of discharge pipe is solid
Dingan County is equipped with one end of muffler 5, and the other end of muffler 5 connect with the top of air inlet pipe 8, discharge pipe 3 pass through muffler 5 and
Air inlet pipe 8 is connected to, and is fixedly installed with the first one-way gas flow valve 4 on muffler 5, in use, by water injection pipe 12 toward tower
Scavenging solution is injected in body 6, the second motor 201 drives turbine flabellum 203 to rotate by connecting shaft 202, so that 9 inside shape of collector box
At positive pressure, exhaust gas enters to collector box 9 by air inlet 16 and is discharged by air inlet pipe 8 by exhaustion plate 18, can effectively keep away
Exempt from corrosion of second motor 201 by exhaust gas, to be conducive to extend the service life of the second motor 201, exhaust gas and scavenging solution
It is contacted, to carry out washing, purifying to the harmful substance in exhaust gas, reduces the nuisance in exhaust gas, at the same time, the
One motor 103 drives adsorption plate 101 to rotate by rotating bar 102, and adsorption plate 101 can capture the harmful substance in air, thus
The nuisance in exhaust gas is further reduced, it, can be right by scavenging solution when adsorption plate 101 turns to 102 lower section of rotating bar
Adsorption plate 101 is cleaned, to be conducive to be promoted the service life and adsorption effect of adsorption plate 101, is conducive to improve purification
Effect, circulating pump 11 sprays the scavenging solution in tower body 6 by the atomization of atomizer 7, to carry out mist to the air in tower body 6
Change absorption, so that carrying out second adsorption to exhaust gas can be further to the harmful substance in exhaust gas by the way of repeatedly adsorbing
Washing, purifying is carried out, to improve clean-up effect, activated carbon adsorption plate 14 carries out taste removal, taste removal to the rear air repeatedly purified
Air afterwards is discharged by discharge pipe 3, and the pH value of air is discharged in 15 real-time detection of PH detector, when PH detector 15 detects discharge
Air is unsatisfactory for purification when requiring, and opens the first one-way gas flow valve 4, and the air of escape pipe 3 is back to air inlet pipe 8 by muffler 5,
It is again introduced into tower body 6 and carries out washing, purifying, so that clean-up effect is further increased, to reduce the shadow to environment
It rings.
Working principle: scavenging solution is injected in tower body 6 by water injection pipe 12, the second motor 201 is driven by connecting shaft 202
Turbine flabellum 203 rotates so that form positive pressure inside collector box 9, exhaust gas by air inlet 16 enter to collector box 9 and by into
Tracheae 8 is discharged by exhaustion plate 18, and exhaust gas is contacted with scavenging solution, so that washing, purifying is carried out to the harmful substance in exhaust gas,
At the same time, first motor 103 drives adsorption plate 101 to rotate by rotating bar 102, and adsorption plate 101 can capture having in air
Evil substance can clean adsorption plate 101 by scavenging solution when adsorption plate 101 turns to 102 lower section of rotating bar, recycle
Pump 11 sprays the scavenging solution in tower body 6 by the atomization of atomizer 7, so that atomization absorption is carried out to the air in tower body 6, from
And second adsorption is carried out to exhaust gas, activated carbon adsorption plate 14 carries out taste removal to the rear air that repeatedly purifies, the air after taste removal by
Discharge pipe 3 is discharged, and the pH value of air is discharged in 15 real-time detection of PH detector, when PH detector 15 detects that discharge air is unsatisfactory for
When purification requires, the first one-way gas flow valve 4 is opened, the air of escape pipe 3 is back to air inlet pipe 8 by muffler 5, is again introduced into tower
Washing, purifying is carried out in body 6.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (7)
1. a kind of waste gas purification wash mill of environmental protection, including rotation adsorbent equipment (1), extractor fan (2) and tower body (6),
Be characterized in that: tower body (6) side, which is fixed by the bracket, to be equipped with collector box (9), and the one of collector box (9) separate tower body (6)
Side offers air inlet (16), is provided with extractor fan (2) in collector box (9), is fixedly installed with air inlet pipe at the top of collector box (9)
(8) one end, tower body (6) is internal to be fixedly installed with exhaustion plate (18), begins with cavity, exhaustion plate (18) inside exhaustion plate (18)
Bottom offers several ventholes, and the cross-sectional area of exhaustion plate (18) is less than the cross-sectional area of tower body (6), air inlet pipe (8)
The other end be through to inside tower body (6) and connect with exhaustion plate (18), be provided on tower body (6) and rotate adsorbent equipment (1), tower body
(6) it is fixedly installed on inner wall installing pipe (13), installing pipe (13) bottom offers several apopores, and installing pipe (13) bottom is solid
Dingan County is equipped with atomizer (7), and tower body (6) is equipped with water circulating pump (11) far from the side of collector box (9), water circulating pump (11)
By being connected to inside pipeline and tower body (6), water circulating pump (11) water outlet is through in tower body (6) and peace water inlet end by pipeline
Tubulature (13) is connected to, and is fixedly installed with drainpipe (10) on the outer wall of tower body (6) side, is connected inside drainpipe (10) and tower body (6)
It is logical, it is fixedly installed with valve on drainpipe (10), is fixedly installed with water injection pipe (12), water injection pipe on the outer wall of tower body (6) other side
(12) be connected to inside tower body (6), tower body (6) top is fixedly installed with discharge pipe (3), and the is fixedly installed on discharge pipe (3)
Two one-way gas flow valves (17), discharge pipe (3) side are fixedly installed with one end of muffler (5), the other end of muffler (5) with into
The top of tracheae (8) connects, and discharge pipe (3) is connected to by muffler (5) with air inlet pipe (8), and muffler is fixedly installed on (5)
First one-way gas flow valve (4).
2. a kind of waste gas purification wash mill of environmental protection according to claim 1, it is characterised in that: the extractor fan
It (2) include the second motor (201), connecting shaft (202) and turbine flabellum (203), connecting shaft (202) is rotatablely installed in collector box
(9) on the side inner wall of tower body (6), connecting shaft (202) is fixedly installed with turbine flabellum far from the one end of tower body (6)
(203), the second motor (201) is fixedly installed in collector box (9) on a side external surface of tower body (6), the second motor (201)
Output shaft be through to that collector box (9) is internal to be connect with one end of connecting shaft (202) by shaft coupling.
3. a kind of waste gas purification wash mill of environmental protection according to claim 2, it is characterised in that: second motor
(201) model M2QA80M4A.
4. a kind of waste gas purification wash mill of environmental protection according to claim 1, it is characterised in that: the rotation absorption dress
Setting (1) includes adsorption plate (101), rotating bar (102) and first motor (103), and rotating bar (102) is rotatablely installed in tower body (6)
Side inner wall on, be fixedly installed in rotating bar (102) adsorption plate (101), first motor (103) be fixedly mounted and tower body
(6) on the side external surface far from collector box (9), the output shaft of first motor (103) is through in tower body (6) by shaft coupling
Portion is connect with the one end of rotating bar (102).
5. a kind of waste gas purification wash mill of environmental protection according to claim 4, it is characterised in that: the first motor
(103) model Y2-1.
6. a kind of waste gas purification wash mill of environmental protection according to claim 1, it is characterised in that: in the tower body (6)
It is fixedly installed on wall activated carbon adsorption plate (14), activated carbon adsorption plate (14) is located at the surface of installing pipe (13).
7. a kind of waste gas purification wash mill of environmental protection according to claim 1, it is characterised in that: the discharge pipe (3)
On be fixedly installed with PH detector (15).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201822225633.9U CN209362171U (en) | 2018-12-27 | 2018-12-27 | A kind of waste gas purification wash mill of environmental protection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201822225633.9U CN209362171U (en) | 2018-12-27 | 2018-12-27 | A kind of waste gas purification wash mill of environmental protection |
Publications (1)
Publication Number | Publication Date |
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CN209362171U true CN209362171U (en) | 2019-09-10 |
Family
ID=67827947
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Application Number | Title | Priority Date | Filing Date |
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CN201822225633.9U Expired - Fee Related CN209362171U (en) | 2018-12-27 | 2018-12-27 | A kind of waste gas purification wash mill of environmental protection |
Country Status (1)
Country | Link |
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CN (1) | CN209362171U (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110665357A (en) * | 2019-09-30 | 2020-01-10 | 何爱龙 | Efficient dust removal and desulfurization device and working method thereof |
CN112076617A (en) * | 2020-09-10 | 2020-12-15 | 奚欢 | Energy-saving recovery processing device for nitrogen oxides in industrial production waste gas |
CN114345073A (en) * | 2021-12-14 | 2022-04-15 | 中创科技孵化器泰州有限公司 | Environment-friendly waste gas purification and washing method |
-
2018
- 2018-12-27 CN CN201822225633.9U patent/CN209362171U/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110665357A (en) * | 2019-09-30 | 2020-01-10 | 何爱龙 | Efficient dust removal and desulfurization device and working method thereof |
CN112076617A (en) * | 2020-09-10 | 2020-12-15 | 奚欢 | Energy-saving recovery processing device for nitrogen oxides in industrial production waste gas |
CN114345073A (en) * | 2021-12-14 | 2022-04-15 | 中创科技孵化器泰州有限公司 | Environment-friendly waste gas purification and washing method |
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GR01 | Patent grant | ||
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190910 |