CN109224739A - A kind of environment-friendly type equipment for treating industrial waste gas - Google Patents
A kind of environment-friendly type equipment for treating industrial waste gas Download PDFInfo
- Publication number
- CN109224739A CN109224739A CN201811171529.4A CN201811171529A CN109224739A CN 109224739 A CN109224739 A CN 109224739A CN 201811171529 A CN201811171529 A CN 201811171529A CN 109224739 A CN109224739 A CN 109224739A
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- waste gas
- exhaust gas
- gas treating
- deduster
- environment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
-
- 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of environment-friendly type equipment for treating industrial waste gas, including deduster, exhaust gas treating tower, filter device, disinfect box and plasma waste gas treating device, deduster, exhaust gas treating tower, filter device, disinfect box passes sequentially through appendix with plasma waste gas treating device and connects, deduster side is equipped with air inlet pipe and other side appendix is connect by the first asepwirator pump with exhaust gas treating tower, exhaust gas treating tower side is equipped with return pipe, return pipe bottom end is provided with water circulating pump, exhaust gas treating tower other side appendix is connect by the second asepwirator pump with filter device, pallet is equipped in disinfect box, pallet is mounted on disinfection chamber interior wall surrounding, ultraviolet lamp group is mounted on pallet, photocatalysis room is equipped in plasma waste gas treating device, photocatalysis indoor location has sterilamp, the plasma waste gas treating device other side offers exhaust pipe, The present invention can effectively remove the pernicious gases such as the dust in exhaust gas, and treatment effeciency is high.
Description
Technical field
The present invention relates to technical field of waste gas treatment, specially a kind of environment-friendly type equipment for treating industrial waste gas.
Background technique
Currently, the exhaust gas that industrial activity generates is one of the source for polluting environment, paint work post work progress oil paint
Volatilize the VOCs treatments such as the VOC (triphen) generated, it is common to use " combustion method " and " active carbon adsorption ", the former is because of cost
Excessive without generally using, the latter is one of common method, but often only rests on projects and start acceptance phase, very
Sticky particle is carried secretly in the exhaust gas such as the benzene,toluene,xylene that paint volatilization generates when constructing when the greatest difficulty just used,
Existing technology cannot go the bacterium in removing exhaust gas, and automatization level is low, and processing exhaust gas effect is poor, carry sticky particle in exhaust gas secretly
It is difficult to handle, be easy to cause the secondary pollution of environment, in consideration of it, it is proposed that a kind of waste gas treatment equipment.
Summary of the invention
The purpose of the present invention is to provide a kind of environment-friendly type equipment for treating industrial waste gas, to solve to mention in above-mentioned background technique
Out the problem of.
To achieve the above object, the invention provides the following technical scheme: a kind of environment-friendly type equipment for treating industrial waste gas, including
Deduster, exhaust gas treating tower, filter device, disinfect box and plasma waste gas treating device are included, at the deduster, the exhaust gas
Reason tower, the filter device, the disinfect box pass sequentially through appendix with the plasma waste gas treating device and connect, described to remove
Dirt device side is equipped with appendix described in air inlet pipe and the other side and is connect by the first asepwirator pump with the exhaust gas treating tower, described useless
Gas disposal tower side is equipped with return pipe, and the return pipe bottom end is provided with water circulating pump, described in the exhaust gas treating tower other side
Appendix is connect by the second asepwirator pump with the filter device, and pallet is equipped in the disinfect box, and the pallet is mounted on institute
Disinfection chamber interior wall surrounding is stated, ultraviolet lamp group is mounted on the pallet, is urged in the plasma waste gas treating device equipped with light
Change room, the photocatalysis indoor location has sterilamp, and the plasma waste gas treating device other side offers exhaust pipe.
Preferably, the deduster is equipped with pedestal and support leg, and ash bucket is equipped between the pedestal, and the ash bucket is equipped with ash
Bucket cover is equipped with the first strainer inside the deduster.
Preferably, the exhaust-gas treatment tower bottom is provided with circulating water pool, and the circulating water pool connects the water circulating pump,
The exhaust gas treating tower is equipped with sparge pipe, and the sparge pipe is equipped with several spray heads and the sparge pipe and the return pipe connect
It connects, the second strainer is equipped with above the sparge pipe, is equipped with steam-water separator above second strainer.
Preferably, the spray head includes upper cover and bottom cover, and the mating surface of the upper cover and bottom cover offsets, the axis of the bottom cover
To first outlet is equipped with, it is equipped with second outlet in the side of the first outlet, the bottom cover is radially provided with third outlet,
And the second outlet and third outlet communicate, the upper lid is equipped with hole, is equipped with needle point in the hole.
Preferably, the filter device both ends are equipped with connector and connect with the appendix, set between the connector
There is Rose Box, is equipped with active carbon filter screen in the Rose Box, and the Rose Box bottom is provided with dust and falls box, the dust
It falls box and connects a box cover.
Preferably, filter structure is equipped in the exhaust pipe, the filter structure includes down the third strainer of arcuate structure,
Collection table is provided on the downside of the third strainer.
Preferably, first asepwirator pump and second asepwirator pump are all made of centrifugal force type asepwirator pump, the active carbon
Strainer specifically uses diameter for 10 centimetres to 15 centimetres of strainer, and the photocatalysis room specifically uses the light of photocatalysis nickel screen composition
Catalyst chamber.
Compared with prior art, the beneficial effects of the present invention are:
(1) present invention is directly filtered down the larger particles in exhaust gas using deduster, and the particulate matter of filtering is made to fall to institute
The ash bucket for stating deduster bottom, after the completion of exhaust-gas treatment work, the particulate matter in it can be uniformly processed in operator, prevented
What only particulate matter was excessive is deposited in the deduster operation for influencing equipment.
(2) pass through the material mixings such as fine particle and the dust in water and exhaust gas in exhaust gas treating tower of the present invention, to make
The substances such as little particle and dust in exhaust gas are fallen down, and are prevented the water in exhaust gas to separating by steam-water separator
Exhaust gas enters next link with steam, impacts to metal equipment, improves service life of equipment.
(3) active carbon filter screen that the present invention is 10 centimetres to 15 centimetres by setting diameter, is conducive to filter exhaust gas
In dust, or the gas particles of viscous layer are lost by water mixing, avoid dust from entering in waste gas treatment equipment, equipment is caused
Damage.
(4) present invention is filtered processed exhaust gas again, is gone by the filter structure being arranged in exhaust pipe
Except efficiency is up to 90% or more.
(5) present invention is handled exhaust gas in the way of multistep treatment, and exhaust gas is made to be purified effect, is improved useless
The purification efficiency of gas.
(6) spray head used in the present invention can uniformly spray spray water, further improve exhaust treatment efficiency.
Detailed description of the invention
Fig. 1 is overall structure of the present invention；
Fig. 2 is filter device internal structure chart of the present invention；
Fig. 3 is exhaust pipe internal structure chart of the present invention；
Fig. 4 is nozzle structure schematic diagram of the present invention；
In figure: 1. dedusters, 2. exhaust gas treating towers, 3. filter devices, 4. disinfect boxes, 5. plasma waste gas treating devices, 6. defeated
It is tracheae, 7. air inlet pipe, 8. first asepwirator pumps, 9. return pipes, 10. water circulating pumps, 11. second asepwirator pumps, 12. pallets, 13. ultraviolet
Line lamp group, 14. photocatalysis rooms, 15. sterilamps, 16. exhaust pipes, 17. pedestals, 18. support legs, 19. ash buckets, 20. grey bucket covers,
21. the first strainer, 22. circulating water pools, 23. sparge pipes, 24. spray heads, 25. second strainers, 26. steam-water separators, 27. connections
Head, 28. Rose Boxes, 29. active carbon filter screens, 30. dust fall box, 31. box covers, 32. filter structures, 33. third strainers, 34.
Collection table, 35. upper covers, 36. bottom covers, 37. first outlets, 38. second outlets, the outlet of 39. thirds, 40. holes, 41. needle points.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment one:
Fig. 1-3 is please referred to, the present invention provides a kind of technical solution: a kind of environment-friendly type equipment for treating industrial waste gas, including deduster
1, exhaust gas treating tower 2, filter device 3, disinfect box 4 and plasma waste gas treating device 5, the deduster 1, the exhaust-gas treatment
Tower 2, the filter device 3, the disinfect box 4 and the plasma waste gas treating device 5 pass sequentially through the connection of appendix 6, institute
It states 1 side of deduster and is connected by the first asepwirator pump 8 with the exhaust gas treating tower 2 equipped with appendix 6 described in air inlet pipe 7 and the other side
It connects, 2 side of exhaust gas treating tower is equipped with return pipe 9, and 9 bottom end of return pipe is provided with water circulating pump 10, at the exhaust gas
Appendix 6 described in reason 2 other side of tower is connect by the second asepwirator pump 11 with the filter device 3, is equipped with support in the disinfect box 4
Disk 12, the pallet 12 are mounted on the 4 inner wall surrounding of disinfect box, and ultraviolet lamp group 13 is mounted on the pallet 12, described
It is equipped with photocatalysis room 14 in plasma waste gas treating device 5, sterilamp 15, the plasma are installed in the photocatalysis room 14
5 other side of emission-control equipment offers exhaust pipe 16.
In the present embodiment, the deduster 1 is equipped with pedestal 17 and support leg 18, is equipped with ash bucket 19 between the pedestal 17,
The ash bucket 19 is equipped with grey bucket cover 20, is equipped with the first strainer 21 inside the deduster 1, and the larger particles in exhaust gas are direct
It filters down, the particulate matter of filtering is made to fall to the ash bucket 19 of 1 bottom of deduster, completed when exhaust-gas treatment works
Afterwards, the particulate matter in it can be uniformly processed in operator, prevent excessive being deposited in the deduster of particulate matter from influencing
The operation of equipment.
In the present embodiment, 2 bottom of exhaust gas treating tower is provided with circulating water pool 22, and the circulating water pool 22 connects described
Water circulating pump 10, the exhaust gas treating tower 2 are equipped with sparge pipe 23, and the sparge pipe 23 is equipped with several spray heads 24 and the water spray
Pipe 23 is connect with the return pipe 9, and the second strainer 25 is equipped with above the sparge pipe 23, is equipped with vapour above second strainer 25
Separator 26, by material mixings such as fine particle in water and exhaust gas and dusts, to make the little particle and ash in exhaust gas
The substances such as dirt are fallen down, and prevent exhaust gas with steam to separating in the water in exhaust gas by the steam-water separator 26
Into next link, metal equipment is impacted, improves service life of equipment.
In the present embodiment, 3 both ends of filter device are equipped with connector 27 and connect with the appendix 6, the connection
It is equipped with Rose Box 28 between first 27, is equipped with active carbon filter screen 29 in the Rose Box 28, and 28 bottom of the Rose Box is provided with
Dust falls box 30, and the dust falls box 30 and connects a box cover 31, is described in 10 centimetres to 15 centimetres by setting diameter
Active carbon filter screen 29 is conducive to filter the dust in exhaust gas, or the gas particles of viscous layer are lost by water mixing, avoids powder
Dirt enters in waste gas treatment equipment, damages to equipment.
In the present embodiment, filter structure 32 is equipped in the exhaust pipe 16, the filter structure 32 includes arcuate structure
Third strainer 33, be provided with collection table 34 on the downside of the third strainer 33, pass through the filtering that the exhaust pipe 16 is arranged
Structure 32 is filtered processed exhaust gas again, and removal efficiency is up to 90% or more.
In the present embodiment, first asepwirator pump and second asepwirator pump are all made of centrifugal force type asepwirator pump, the work
Property carbon filtration netting gear body use diameter for 10 centimetres to 15 centimetres of strainer, the photocatalysis room specifically uses photocatalysis nickel screen to constitute
Photocatalysis room.
Embodiment two:
It please refers to shown in Fig. 1-4, a kind of environment-friendly type equipment for treating industrial waste gas, including deduster 1, exhaust gas treating tower 2, filtering dress
Set 3, disinfect box 4 and plasma waste gas treating device 5, the deduster 1, the exhaust gas treating tower 2, the filter device 3, institute
It states disinfect box 4 and the plasma waste gas treating device 5 passes sequentially through the connection of appendix 6,1 side of deduster is equipped with air inlet
Appendix 6 described in pipe 7 and the other side is connect by the first asepwirator pump 8 with the exhaust gas treating tower 2, the exhaust gas treating tower 2 one
Side is equipped with return pipe 9, and 9 bottom end of return pipe is provided with water circulating pump 10, appendix described in 2 other side of exhaust gas treating tower
6 are connect by the second asepwirator pump 11 with the filter device 3, are equipped with pallet 12 in the disinfect box 4, the pallet 12 is mounted on
The 4 inner wall surrounding of disinfect box, ultraviolet lamp group 13 is mounted on the pallet 12, in the plasma waste gas treating device 5
Equipped with photocatalysis room 14, sterilamp 15 is installed in the photocatalysis room 14,5 other side of plasma waste gas treating device is opened
Equipped with exhaust pipe 16.
In the present embodiment, the deduster 1 is equipped with pedestal 17 and support leg 18, is equipped with ash bucket 19 between the pedestal 17,
The ash bucket 19 is equipped with grey bucket cover 20, is equipped with the first strainer 21 inside the deduster 1, and the larger particles in exhaust gas are direct
It filters down, the particulate matter of filtering is made to fall to the ash bucket 19 of 1 bottom of deduster, completed when exhaust-gas treatment works
Afterwards, the particulate matter in it can be uniformly processed in operator, prevent excessive being deposited in the deduster of particulate matter from influencing
The operation of equipment.
In the present embodiment, 2 bottom of exhaust gas treating tower is provided with circulating water pool 22, and the circulating water pool 22 connects the circulation
Water pump 10, the exhaust gas treating tower 2 are equipped with sparge pipe 23, and the sparge pipe 23 is equipped with several spray heads 24 and the sparge pipe 23
It is connect with the return pipe 9, the second strainer 25 is equipped with above the sparge pipe 23, is divided above second strainer 25 equipped with carbonated drink
From device 26, by material mixings such as fine particle in water and exhaust gas and dusts, to make little particle and the dust etc. in exhaust gas
Substance is fallen down, and prevents exhaust gas from entering with steam to separating in the water in exhaust gas by the steam-water separator 26
Next link, impacts metal equipment, improves service life of equipment.
In the present embodiment, spray head 24 includes upper cover 35 and bottom cover 36, and the mating surface of the upper cover 35 and bottom cover 36 offsets, institute
The axial direction for stating bottom cover 36 is equipped with first outlet 37, is equipped with second outlet 38, the bottom cover in the side of the first outlet 37
36 third that is radially provided with exports 39, and the second outlet 38 and third outlet 39 communicate, and the upper cover 35 is equipped with hole 40,
Needle point 41 is equipped in the hole 40.The spray head used in the present invention can uniformly spray spray water, further improve at exhaust gas
Manage efficiency.
Working principle: deduster, exhaust gas treating tower, filter device, disinfect box and plasma waste gas treating device of the present invention
Appendix connection is passed sequentially through, ash bucket is equipped between the deduster bottom end, the first strainer is installed inside the deduster, is adopted
The larger particles in exhaust gas are directly filtered down with the deduster, the particulate matter of filtering is made to fall to the deduster bottom
Ash bucket, when exhaust-gas treatment work after the completion of, the particulate matter in it can be uniformly processed in operator, prevent particulate matter excessive
Be deposited in the deduster operation for influencing equipment, the exhaust-gas treatment tower bottom is provided with circulating water pool, the exhaust gas
Treating column is equipped with sparge pipe, and the sparge pipe is equipped with several spray heads, is equipped with the second strainer above the sparge pipe, and described second
Steam-water separator is equipped with above strainer, the exhaust gas treating tower side is equipped with return pipe, and the return pipe bottom end is provided with circulation
Water pump, by material mixings such as fine particle in water and exhaust gas and dusts, to make the objects such as little particle and the dust in exhaust gas
Matter is fallen down, and by the steam-water separator by the water in exhaust gas to separating, prevents exhaust gas from entering with steam next
Link impacts metal equipment, improves service life of equipment, and the filter device includes that connector, Rose Box, dust fall
Box and box cover are fallen, is equipped with active carbon filter screen in the Rose Box, the activity for being 10 centimetres to 15 centimetres by setting diameter
Charcoal strainer is conducive to filter the dust in exhaust gas, is equipped with pallet in the disinfect box, the pallet is mounted on the disinfection
Chamber interior wall surrounding, ultraviolet lamp group are mounted on the pallet, and photocatalysis room, institute are equipped in the plasma waste gas treating device
Stating photocatalysis indoor location has sterilamp, and the plasma waste gas treating device other side offers exhaust pipe, the exhaust pipe
Interior to be equipped with filter structure, the filter structure includes down the third strainer of arcuate structure, is provided with receipts on the downside of the third strainer
Ji Tai is filtered processed exhaust gas, removal efficiency reaches again by the filter structure being arranged in the exhaust pipe
90% or more.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of environment-friendly type equipment for treating industrial waste gas, including deduster (1), exhaust gas treating tower (2), filter device (3), disinfection
Case (4) and plasma waste gas treating device (5), it is characterised in that: the deduster (1), the exhaust gas treating tower (2), described
Filter device (3), the disinfect box (4) and the plasma waste gas treating device (5) pass sequentially through appendix (6) connection, institute
It states deduster (1) side and passes through the first asepwirator pump (8) and the exhaust gas equipped with appendix (6) described in air inlet pipe (7) and the other side
Treating column (2) connection, exhaust gas treating tower (2) side are equipped with return pipe (9), and return pipe (9) bottom end is provided with circulation
Water pump (10), appendix (6) described in exhaust gas treating tower (2) other side pass through the second asepwirator pump (11) and the filter device
(3) it connecting, is equipped with pallet (12) in the disinfect box (4), the pallet (12) is mounted on the disinfect box (4) inner wall surrounding,
Ultraviolet lamp group (13) is mounted on the pallet (12), and photocatalysis room is equipped in the plasma waste gas treating device (5)
(14), it is equipped with sterilamp (15) in the photocatalysis room (14), plasma waste gas treating device (5) other side offers
Exhaust pipe (16).
2. a kind of environment-friendly type equipment for treating industrial waste gas according to claim 1, it is characterised in that: the deduster (1)
Equipped with pedestal (17) and support leg (18), ash bucket (19) are equipped between the pedestal (17), the ash bucket (19) is equipped with grey bucket cover
(20), the first strainer (21) are installed inside the deduster (1).
3. a kind of environment-friendly type equipment for treating industrial waste gas according to claim 1, it is characterised in that: the exhaust gas treating tower
(2) bottom is provided with circulating water pool (22), and the circulating water pool (22) connects the water circulating pump (10), the exhaust gas treating tower
(2) sparge pipe (23) are equipped with, the sparge pipe (23) is equipped with several spray heads (24) and the sparge pipe (23) and the reflux
(9) connection is managed, the second strainer (25) is equipped with above the sparge pipe (23), steam-water separation is equipped with above second strainer (25)
Device (26).
4. a kind of environment-friendly type equipment for treating industrial waste gas according to claim 3, it is characterised in that: spray head (24) packet
Include upper cover (35) and bottom cover (36), the mating surface of the upper cover (35) and bottom cover (36) offsets, and the axial direction of the bottom cover (36) is worn
Equipped with first outlet (37), second outlet (38) are equipped in the side of the first outlet (37), the radial direction of the bottom cover (36)
(39) are exported equipped with third, and the second outlet (38) and third outlet (39) communicate, the upper cover (35) is equipped with hole
(40), needle point (41) are equipped in the hole (40).
5. a kind of environment-friendly type equipment for treating industrial waste gas according to claim 1, it is characterised in that: the filter device
(3) both ends are equipped with connector (27) and connect with the appendix (6), are equipped with Rose Box (28) between the connector (27),
Active carbon filter screen (29) are equipped in the Rose Box (28), and the Rose Box (28) bottom is provided with dust and falls box (30),
The dust falls box (30) connection one box cover (31).
6. a kind of environment-friendly type equipment for treating industrial waste gas according to claim 1, it is characterised in that: the exhaust pipe (16)
Interior to be equipped with filter structure (32), the filter structure (32) includes down the third strainer (33) of arcuate structure, the third strainer
(33) downside is provided with collection table (34).
7. a kind of environment-friendly type equipment for treating industrial waste gas according to claim 1, it is characterised in that: first asepwirator pump
(8) be all made of centrifugal force type asepwirator pump with second air-breathing (11) pump, the active carbon filter screen (29) specifically use diameter for
10 centimetres to 15 centimetres of strainer, the photocatalysis room that the photocatalysis room (14) is specifically constituted using photocatalysis nickel screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811171529.4A CN109224739A (en) | 2018-10-09 | 2018-10-09 | A kind of environment-friendly type equipment for treating industrial waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811171529.4A CN109224739A (en) | 2018-10-09 | 2018-10-09 | A kind of environment-friendly type equipment for treating industrial waste gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109224739A true CN109224739A (en) | 2019-01-18 |
Family
ID=65055121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811171529.4A Withdrawn CN109224739A (en) | 2018-10-09 | 2018-10-09 | A kind of environment-friendly type equipment for treating industrial waste gas |
Country Status (1)
| Country | Link |
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| CN (1) | CN109224739A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110975498A (en) * | 2019-12-25 | 2020-04-10 | 陈俊兆 | Factory waste gas multi-stage treatment device |
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| CN107661679A (en) * | 2017-11-10 | 2018-02-06 | 张永植 | Emission-control equipment |
| CN206980374U (en) * | 2016-12-30 | 2018-02-09 | 天津雨昌环保工程有限公司 | A kind of equipment for treating industrial waste gas |
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| CN107930290A (en) * | 2017-12-22 | 2018-04-20 | 郑州龙威电子科技有限公司 | Waste gas treatment equipment |
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| CN102698895A (en) * | 2012-05-10 | 2012-10-03 | 太仓戴尔塔精密模具有限公司 | Spray head |
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| CN107661679A (en) * | 2017-11-10 | 2018-02-06 | 张永植 | Emission-control equipment |
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| CN110975498A (en) * | 2019-12-25 | 2020-04-10 | 陈俊兆 | Factory waste gas multi-stage treatment device |
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Application publication date: 20190118 |