CN107511069A - A kind of efficient energy-saving emission-control equipment - Google Patents
A kind of efficient energy-saving emission-control equipment Download PDFInfo
- Publication number
- CN107511069A CN107511069A CN201710863546.3A CN201710863546A CN107511069A CN 107511069 A CN107511069 A CN 107511069A CN 201710863546 A CN201710863546 A CN 201710863546A CN 107511069 A CN107511069 A CN 107511069A
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- Prior art keywords
- scrubbing tower
- vertical tube
- direct
- downside
- fired heater
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- 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
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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
- B01D53/02—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/90—Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/91—Bacteria; Microorganisms
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention discloses a kind of efficient energy-saving emission-control equipment, including direct-fired heater and scrubbing tower, air inlet pipe is connected with the left of the direct-fired heater, the right side of direct-fired heater is provided with apparatus of oxygen supply, dust absorbing device is respectively equipped with the appendix of direct-fired heater, heat exchanger and the first air exhauster, the inside of scrubbing tower is respectively equipped with the second filter layer from top to bottom, first filter layer, catalytic unit and shower, the downside of shower is in being provided with support in scrubbing tower, vertical tube is rotatablely equipped with the middle part of support, the lower end of vertical tube connects setting with appendix by swivel joint, it is additionally provided with the downside of support for driving the motor rotated to vertical tube, the upper side of vertical tube is circumferentially provided with more transverse tubes, multiple jet thrusts are installed on the downside of transverse tube.Waste gas purification of the present invention is thorough, and purification efficiency is high, reduces the pollution to environment to greatest extent, ensure that discharge waste gas meets the requirements, while heat resource is utilized effectively, energy-conserving and environment-protective, reduces the wasting of resources.
Description
Technical field
The present invention relates to environmental technology field, specifically a kind of efficient energy-saving emission-control equipment.
Background technology
In the fields such as steel industry, cement industry, smelting industry, thermal power industry, the gesture in process of manufacture
Substantial amounts of industrial waste gas must be produced, mostly containing bulky grain dust, fine particle impurity, toluene, first in these industrial waste gases
The harmful components such as aldehyde, sulfide, if be directly discharged in air, air certainly will be seriously polluted, hygienic conditions is influenceed, endangers people
Body health.Purification for waste gas often has different processing sides due to the difference of the factors such as exhaust gas constituents, environment and temperature
Method.And some waste gas can not reach regulation effect, it is necessary to the group for passing through two or more modes by single processing mode
Close to handle.But existing waste gas treatment equipment, using control inconvenience, exhaust purification efficiency is low, and purification is not thorough, does not reach
Emission request, easily environment is polluted, and the heat resource in waste gas cannot recycle, inadequate energy-conserving and environment-protective.
The content of the invention
It is an object of the invention to provide a kind of efficient energy-saving emission-control equipment, to solve to propose in above-mentioned background technology
The problem of.
To achieve the above object, the present invention provides following technical scheme：
A kind of efficient energy-saving emission-control equipment, including direct-fired heater and scrubbing tower, air inlet pipe is connected with the left of the direct-fired heater,
The right side of direct-fired heater is provided with apparatus of oxygen supply, and the direct-fired heater also connects the left lower air inlet of scrubbing tower by appendix, defeated
Dust absorbing device, heat exchanger and the first air exhauster are respectively equipped with tracheae, the inside of the scrubbing tower is distinguished from top to bottom
Provided with the second filter layer, the first filter layer, catalytic unit and shower, the downside of the shower is provided with multiple fountain heads, institute
The right side for stating scrubbing tower is connected with circulating water pipe in the right-hand member of shower, and the other end of circulating water pipe is connected to the right side of scrubbing tower
Bottom, and circulating water pipe is provided with circulating pump, the downside of the shower turn in being provided with support, the middle part of support in scrubbing tower
Dynamic to be provided with vertical tube, the upper end of vertical tube seals, and the lower end of vertical tube connects setting with appendix by swivel joint, the support
Downside is additionally provided with for driving the motor rotated to vertical tube, and the upper side of the vertical tube is circumferentially provided with more transverse tubes, transverse tube
Downside multiple jet thrusts are installed, escape pipe is connected with the top of the scrubbing tower, escape pipe is provided with the second air exhauster, gone out
The end of tracheae is provided with hood, and the bottom of the scrubbing tower is connected with sewage pipe, and sewage pipe is provided with blowoff valve.
As the further scheme of the present invention：It is pyramidal structure at the top and bottom of the scrubbing tower.
As the further scheme of the present invention：First filter layer and the second filter layer are activated carbon/photocatalyst mistake
Filter screen, activated carbon/photo-catalytic filtering screen are combined into by activated charcoal strainer, high efficiency filter paper, photo-catalytic filtering screen.
As the further scheme of the present invention：The transverse tube is circumferentially uniformly provided with three.
As the further scheme of the present invention：The motor is variable-frequency motor.
Compared with prior art, the beneficial effects of the invention are as follows：The efficient energy-saving emission-control equipment, structure design are closed
Reason, use is easy to control, and waste gas purification is thorough, and purification efficiency is high, reduces the pollution to environment to greatest extent, ensure that discharge
Waste gas meets the requirements, while heat resource is utilized effectively, energy-conserving and environment-protective, reduces the wasting of resources.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Referring to Fig. 1, in the embodiment of the present invention, a kind of efficient energy-saving emission-control equipment, including direct-fired heater 2 and scrubbing tower
8, the left side of the direct-fired heater 2 is connected with air inlet pipe 1, and the right side of direct-fired heater 2 is provided with apparatus of oxygen supply 3, and the direct-fired heater 2 also passes through
Appendix 4 connects the left lower air inlet of scrubbing tower 8, and dust absorbing device 5, the and of heat exchanger 6 are respectively equipped with appendix 4
First air exhauster 7, waste gas is inputted into direct-fired heater 2 by air inlet pipe 1, the carbon monoxide in waste gas, sulfur dioxide etc. is harmful
Gas burns, and facilitates follow-up washing, can ensure the oxygen concentration in direct-fired heater 2 by apparatus of oxygen supply 3, ensure the abundant of waste gas
Burning, the dust absorbing device 5 are used to carry out waste gas dust absorbing, and the heat exchanger 6 is used to carry out heat exchange, reduced
Heat resource is wasted, while waste gas is cooled, and first air exhauster 7 is used to waste gas being transported in scrubbing tower 8.
The top and bottom of the scrubbing tower 8 are pyramidal structure, and the inside of the scrubbing tower 8 is respectively equipped with from top to bottom
Second filter layer 19, the first filter layer 18, catalytic unit 17 and shower 16, the downside of the shower 16 are provided with multiple water sprays
First 15, the right side of the scrubbing tower 8 is connected with circulating water pipe 11, the other end connection of circulating water pipe 11 in the right-hand member of shower 16
In the bottom right side of scrubbing tower 8, and circulating water pipe 11 is provided with circulating pump 13, and control circulating pump 13 acts, and can pass through fountain head
15 spray water body, carry out washing, purifying to waste gas, the catalytic unit 17 can be removed to contained chemical substance in waste gas, most
Pollution of the reduction of limits to environment, the filter layer 19 of the first filter layer 18 and second is activated carbon/photocatalyst filter
Net, activated carbon/photo-catalytic filtering screen are combined into by activated charcoal strainer, high efficiency filter paper, photo-catalytic filtering screen, and triple effect closes
One, photocatalyst can degrade toxic and harmful gas in air, kill various bacteria, and the toxin that can discharge bacterium or fungi point
Solution and harmless treatment, high efficiency filter paper can effectively filter various dust particles, and activated charcoal strainer, which can be adsorbed effectively, various to be had
Malicious harmful substance and peculiar smell.
The downside of the shower 16 is rotatablely equipped with vertical tube in being provided with support 25, the middle part of support 25 in scrubbing tower 8
23, the upper end sealing of vertical tube 23, the lower end of vertical tube 23 connects setting with appendix 4 by swivel joint 12, the support 25
Downside is additionally provided with for driving the motor 26 rotated to vertical tube 23, and motor 26 is variable-frequency motor, the upper side of the vertical tube 23
More transverse tubes 14 are circumferentially installed, the transverse tube 14 is circumferential to be uniformly provided with three, and the downside of transverse tube 14 is provided with multiple jets
First 24, drive vertical tube 23 to rotate by motor 26, lifting transverse tube 14 downside jet thrust 24 blows out distribution of the waste gas in scrubbing tower 8
Uniformity, lift treatment effect.
The top of the scrubbing tower 8 is connected with escape pipe 20, and escape pipe 20 is provided with the second air exhauster 22, escape pipe 20
End is provided with hood 23, and the second air exhauster 22 is used for extracting waste gas out and being discharged from hood 23, the bottom of the scrubbing tower 8
Sewage pipe 9 is connected with, sewage pipe 9 is provided with blowoff valve 10, and sewage discharge can be carried out by sewage pipe 9, and to washings more
Change.
The efficient energy-saving emission-control equipment, waste gas are input in direct-fired heater 2 by air inlet pipe 1, first by waste gas
The pernicious gases such as carbon monoxide, sulfur dioxide are burnt, and facilitate follow-up washing, and powder is carried out to waste gas by dust absorbing device 5
Dirt is absorbed, and heat exchanger 6 is used to carry out heat exchange, reduces heat resource and wastes, while waste gas is cooled, and passes through motor 26
Vertical tube 23 is driven to rotate, lifting transverse tube 14 downside jet thrust 24 blows out distributing homogeneity of the waste gas in scrubbing tower 8, lifting water spray
The effect of first 15 spray, can be removed, to greatest extent reduction pair by catalytic unit 17 to contained chemical substance in waste gas
The pollution of environment, waste gas can sufficiently be filtered by the first filter layer 18 and the second filter layer 19, prevent solid particle
Not filtered and cause to filter halfway situation, the waste gas after processing is conveyed by escape pipe 20, and is discharged from hood 23,
Waste gas can be transported to by the first air exhauster 7 and the second air exhauster 22 in scrubbing tower 8 and extract waste gas out from scrubbing tower 8 respectively,
The treatment effeciency of waste gas is controlled.
The above is only the preferred embodiment of the present invention, it is noted that for those skilled in the art, not
On the premise of departing from present inventive concept, several modifications and improvements can also be made, these should also be considered as the protection model of the present invention
Enclose, these effects and practical applicability for implementing all without the influence present invention.
Claims (5)
1. a kind of efficient energy-saving emission-control equipment, including direct-fired heater（2）And scrubbing tower（8）, it is characterised in that the direct-fired heater
（2）Left side be connected with air inlet pipe（1）, direct-fired heater（2）Right side be provided with apparatus of oxygen supply（3）, the direct-fired heater（2）Also by defeated
Tracheae（4）Connect scrubbing tower（8）Left lower air inlet, appendix（4）On be respectively equipped with dust absorbing device（5）, heat hand over
Parallel operation（6）With the first air exhauster（7）, the scrubbing tower（8）Inside be respectively equipped with the second filter layer from top to bottom（19）, first
Filter layer（18）, catalytic unit（17）And shower（16）, the shower（16）Downside be provided with multiple fountain heads（15）, institute
State scrubbing tower（8）Right side in shower（16）Right-hand member be connected with circulating water pipe（11）, circulating water pipe（11）The other end connect
It is connected to scrubbing tower（8）Bottom right side, and circulating water pipe（11）It is provided with circulating pump（13）, the shower（16）Downside in
Scrubbing tower（8）Support is inside installed（25）, support（25）Middle part be rotatablely equipped with vertical tube（23）, vertical tube（23）Upper end it is close
Envelope, vertical tube（23）Lower end pass through swivel joint（12）With appendix（4）Connection is set, the support（25）Downside be additionally provided with
For to vertical tube（23）Drive the motor rotated（26）, the vertical tube（23）Upper side more transverse tubes are circumferentially installed
（14）, transverse tube（14）Downside multiple jet thrusts are installed（24）, the scrubbing tower（8）Top be connected with escape pipe（20）,
Escape pipe（20）It is provided with the second air exhauster（22）, escape pipe（20）End be provided with hood（23）, the scrubbing tower（8）'s
Bottom is connected with sewage pipe（9）, sewage pipe（9）It is provided with blowoff valve（10）.
2. efficient energy-saving emission-control equipment according to claim 1, it is characterised in that the scrubbing tower（8）Top
It is pyramidal structure with bottom.
3. efficient energy-saving emission-control equipment according to claim 1, it is characterised in that first filter layer（18）With
Second filter layer（19）To be by activated charcoal strainer, height for activated carbon/photo-catalytic filtering screen, activated carbon/photo-catalytic filtering screen
Effect filter paper, photo-catalytic filtering screen are combined into.
4. efficient energy-saving emission-control equipment according to claim 1, it is characterised in that the transverse tube（14）It is circumferential uniform
It is provided with three.
5. efficient energy-saving emission-control equipment according to claim 1, it is characterised in that the motor（26）For variable-frequency electric
Machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710863546.3A CN107511069A (en) | 2017-09-22 | 2017-09-22 | A kind of efficient energy-saving emission-control equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710863546.3A CN107511069A (en) | 2017-09-22 | 2017-09-22 | A kind of efficient energy-saving emission-control equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107511069A true CN107511069A (en) | 2017-12-26 |
Family
ID=60726527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710863546.3A Pending CN107511069A (en) | 2017-09-22 | 2017-09-22 | A kind of efficient energy-saving emission-control equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107511069A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413426A (en) * | 2018-03-14 | 2018-08-17 | 佛山市千注利科技有限公司 | A kind of refuse disposal installation with environment-friendly function |
| CN108579283A (en) * | 2018-01-16 | 2018-09-28 | 天津科创复兴科技咨询有限公司 | A kind of horizontal type desulfurization and dedusting spray column |
| CN109099443A (en) * | 2018-07-25 | 2018-12-28 | 安徽电信工程有限责任公司 | A kind of disposable purifying processing device of industrial waste gas |
| CN109126450A (en) * | 2018-10-30 | 2019-01-04 | 晋江知保企业管理咨询有限公司 | Industrial carbon monoxide emission-control equipment |
| CN110559781A (en) * | 2019-09-12 | 2019-12-13 | 顺景园精密铸造(深圳)有限公司 | Multifunctional wet dust collector |
| CN110683772A (en) * | 2019-11-15 | 2020-01-14 | 湖南绿生科技发展有限公司 | Energy-saving environment-friendly lime kiln |
| CN112263907A (en) * | 2020-09-28 | 2021-01-26 | 张红社 | Energy-concerving and environment-protective type chemical waste gas sprays equipment |
| CN114768454A (en) * | 2022-04-29 | 2022-07-22 | 无锡普力斯特实验室设备科技有限公司 | Multi-stage concentration treatment device and method for pharmaceutical waste gas in laboratory |
| CN114788980A (en) * | 2022-05-18 | 2022-07-26 | 四川铸创安全科技有限公司 | Waste gas treatment equipment that chemical industry safety ring protects usefulness |
| CN115463535A (en) * | 2022-10-17 | 2022-12-13 | 湖北慧科环境工程有限公司 | Environmental protection atmosphere pollution administers and uses clarification plant |
| CN116272308A (en) * | 2023-01-09 | 2023-06-23 | 南通星球石墨股份有限公司 | Acid organic waste gas treatment tower |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108579283A (en) * | 2018-01-16 | 2018-09-28 | 天津科创复兴科技咨询有限公司 | A kind of horizontal type desulfurization and dedusting spray column |
| CN108413426A (en) * | 2018-03-14 | 2018-08-17 | 佛山市千注利科技有限公司 | A kind of refuse disposal installation with environment-friendly function |
| CN109099443A (en) * | 2018-07-25 | 2018-12-28 | 安徽电信工程有限责任公司 | A kind of disposable purifying processing device of industrial waste gas |
| CN109126450B (en) * | 2018-10-30 | 2020-10-30 | 晋江知保企业管理咨询有限公司 | Industrial carbon monoxide waste gas treatment device |
| CN109126450A (en) * | 2018-10-30 | 2019-01-04 | 晋江知保企业管理咨询有限公司 | Industrial carbon monoxide emission-control equipment |
| CN110559781B (en) * | 2019-09-12 | 2021-08-06 | 顺景园精密铸造(深圳)有限公司 | Multifunctional wet dust collector |
| CN110559781A (en) * | 2019-09-12 | 2019-12-13 | 顺景园精密铸造(深圳)有限公司 | Multifunctional wet dust collector |
| CN110683772A (en) * | 2019-11-15 | 2020-01-14 | 湖南绿生科技发展有限公司 | Energy-saving environment-friendly lime kiln |
| CN110683772B (en) * | 2019-11-15 | 2022-09-30 | 湖南绿生科技发展有限公司 | Energy-saving environment-friendly lime kiln |
| CN112263907B (en) * | 2020-09-28 | 2022-07-29 | 山东派尼新材料股份有限公司 | Energy-concerving and environment-protective type chemical waste gas sprays equipment |
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| CN114768454A (en) * | 2022-04-29 | 2022-07-22 | 无锡普力斯特实验室设备科技有限公司 | Multi-stage concentration treatment device and method for pharmaceutical waste gas in laboratory |
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| CN114788980B (en) * | 2022-05-18 | 2023-11-21 | 四川铸创安全科技有限公司 | Waste gas treatment equipment for chemical industry safety environmental protection |
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Application publication date: 20171226 |