CN108310971A - A kind of flue-gas purification equipment of more cartridge combinations - Google Patents
A kind of flue-gas purification equipment of more cartridge combinations Download PDFInfo
- Publication number
- CN108310971A CN108310971A CN201810208127.0A CN201810208127A CN108310971A CN 108310971 A CN108310971 A CN 108310971A CN 201810208127 A CN201810208127 A CN 201810208127A CN 108310971 A CN108310971 A CN 108310971A
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- Prior art keywords
- gas
- flue
- shell
- filter
- purification
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Classifications
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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
- B01D53/864—Removing carbon monoxide or hydrocarbons
-
- 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
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
-
- 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8631—Processes characterised by a specific device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/206—Organic halogen compounds
- B01D2257/2064—Chlorine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/502—Carbon monoxide
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention discloses a kind of flue-gas purification equipments of more cartridge combinations, including air inlet pipe, clarifier box, exhaust pipe and purifying filter element, purification assembly one and purification assembly two are installed inside clarifier box, purification assembly one and purification assembly two are made of several purifying filter elements arranged successively, the purifying filter element is made of filter element shell, support element, exhaust passage, filter pulp layer, effusion slot, adsorption stuffing, outlet nozzle, gas-guide tube, end seal head, gas collection shell, air filtration layer and delivery line, and filter element shell one end is connected with gas collection shell；Convenient for being filtered processing to flue gas, increase the efficiency of purified treatment, can effectively adsorb the harmful substances such as sulfur dioxide in air, dioxin, convenient for in flue gas carbon monoxide and nitric oxide carry out being catalyzed into carbon dioxide and nitrogen dioxide absorption, purified treatment；Flue gas is discharged after being handled successively from adsorption stuffing, filter pulp layer and air filtration layer, improves quality and the safety of flue gas emission, avoids polluting the environment.
Description
Technical field
The present invention relates to dust treatment apparatus field, the flue-gas purification equipment of specifically a kind of more cartridge combinations.
Background technology
With the fast development of China's economy, energy-output ratio increasingly increases, while air quality is also worsening.It is saving
Today that energy emission reduction environmental requirement is constantly promoted, natural gas disappear as cleaning and the higher energy of calorific value in China urban energy
Take constant in structure to rise.Currently, China large- and-medium size cities major part coal-burning boiler has been changed to gas fired-boiler.For majority
Gas fired-boiler, exhaust gas temperature is still at 150 DEG C or more, even as high as 250 DEG C.Containing water vapor about 18% in gas fired-boiler flue gas（Body
Product percentage）, there are a large amount of obvious heat of smoke and vapor latent heat, flue gas brings a large amount of heat into ambient air, not only unrestrained
Take mass energy, boiler thermal efficiency is made to reduce, and polluted environment.Dividing wall type waste heat usually is installed in boiler tail at present
Recycle heat exchanger（Such as fin tube type energy-saving appliance）, part sensible heat that can only be in recovered flue gas, and waste heat recovery is less efficient, and cigarette
The flow resistance of gas is larger, and greater back-pressure is caused to boiler.
Gas cleaning pond is used in the prior art, is sponged the cigarette ash in flue gas by the water in clarifier-tank, in flue gas
Heat recycled by pipeline, the residence time is short in water for flue gas, and the bubble that flue gas is formed in water is larger so that flue gas is net
Change effect is poor, and the cigarette ash left after being filtered in gas cleaning pond also causes the water in gas cleaning pond muddy, to also affect
The separating effect of hot gas and cigarette ash, and work long hours in gas cleaning pond and will produce a large amount of cigarette ashes and need to clear up, and it is different
The soot amount that generates of fuel it is different, can not be upper from the time to determine whether need to clear up, need shutdown inspection, very not side
Just.
Invention content
The purpose of the present invention is to provide a kind of flue-gas purification equipments of more cartridge combinations, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the present invention provides the following technical solutions：
A kind of flue-gas purification equipment of more cartridge combinations, including air inlet pipe, clarifier box, exhaust pipe and purifying filter element, only
Change box house and purification assembly one and purification assembly two are installed, purification assembly one and purification assembly two are arranged successively by several
Purifying filter element composition, the purifying filter element by filter element shell, support element, exhaust passage, filter pulp layer, effusion slot, adsorption stuffing,
Outlet nozzle, gas-guide tube, end seal head, gas collection shell, air filtration layer and delivery line composition, filter element shell one end is connected with gas collection shell；
Support element is connected on the filter element shell inner wall, offsets with filter pulp layer on the inside of support element, gas-guide tube, air guide are installed in filter pulp layer
Adsorption stuffing is filled in cavity between pipe and filter pulp layer；The delivery line of purification assembly one is connected to gas collecting tube one, gas collecting tube
One is connected to exhaust pipe, and gas collecting tube two is connected on exhaust pipe, and gas collecting tube two is connected to the delivery line of purification assembly two；It is described net
The gas-guide tube for changing component one is connected to gas distribution pipe one, and the gas-guide tube of purification assembly two is connected to gas distribution pipe two, the gas distribution pipe
One and gas distribution pipe two be connected to air inlet pipe.
As a further solution of the present invention：It is screw thread mouth connection and junction between the filter element shell and gas collection shell
Equipped with sealing ring.
As a further solution of the present invention：The support element is by wire bending in the tubular that longitudinal section is " W " type, filter
Cotton layer is tubular structure, and several effusion slots are offered on filter pulp layer inner wall.
As a further solution of the present invention：The gas-guide tube is arranged along the axis of filter pulp layer, is installed on gas-guide tube side wall
There are several outlet nozzles, one end of gas-guide tube to be welded with end seal head.
As a further solution of the present invention：The adsorption stuffing is activated carbon.
As a further solution of the present invention：The gas collection enclosure interior is equipped with air filtration layer, and air filtration layer is by wire netting
Loaded nanometer palladium catalyst forms, and delivery line is equipped in the middle part of the air filtration layer, several ventholes are offered on the tube wall of delivery line.
As a further solution of the present invention：Air bleeding valve one, two outlet side one of gas collecting tube are installed on the gas collecting tube one
The exhaust pipe of side is equipped with air bleeding valve two.
Compared with prior art, the beneficial effects of the invention are as follows：
One, the flue-gas purification equipment of a kind of more cartridge combinations, it is easy to operate, convenient for being filtered place to flue gas
Reason, increase the efficiency of purified treatment, can effectively adsorb the absorption of the harmful substances such as sulfur dioxide in air, dioxin, facilitate by
The harmful substances from flue gases absorption that outlet nozzle sprays；Convenient for in flue gas carbon monoxide and nitric oxide carry out being catalyzed into dioxy
Change carbon and nitrogen dioxide absorption, purified treatment.
Two, choose whether at the same time the purified treatment participated in flue gas using purification assembly one is led to according to purification demand
The keying for overregulating air bleeding valve two is opened, and the flow velocity of flue gas is controlled, to adjust the purification effect of purification assembly one, purification assembly two
Rate.
Three, air inlet pipe is input to flue gas and is flowed into gas distribution pipe one and gas distribution pipe two, subsequently into several purifying filter elements
Filtering and purified treatment, the setting of several purifying filter elements improve the effect of fume treatment, even if wherein a certain purifying filter element goes out
When existing failure, being normally carried out for fume treatment is not influenced, flue gas handles heel row successively from adsorption stuffing, filter pulp layer and air filtration layer
Go out, improves quality and the safety of flue gas emission, avoid polluting the environment.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structural schematic diagram of purifying filter element in the present invention.
Fig. 3 is the schematic cross-section of purifying filter element in the present invention.
In figure：1- air inlet pipe, 2- gas distribution pipes one, 3- gas distribution pipes two, 4- clarifier box, 5- gas collecting tubes one, 6- air bleeding valves one,
7- exhaust pipes, 8- gas collecting tubes two, 9- air bleeding valves two, 10- purification assemblies one, 11- purification assemblies two, 12- purifying filter elements, 13- filters
Core shell body, 14- support elements, 15- exhaust passages, 16- filter pulps layer, 17- effusions slot, 18- adsorption stuffings, 19- outlet nozzles, 20- are led
Tracheae, 21- end seals head, 22- gas collections shell, 23- air filtrations layer, 24- delivery lines, 25- ventholes.
Specific implementation mode
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 describes, 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.
Please refer to Fig.1~3, in the embodiment of the present invention, a kind of flue-gas purification equipment of more cartridge combinations, including air inlet
Pipe 1, clarifier box 4, exhaust pipe 7 and purifying filter element 12 are equipped with purification assembly 1 and purification group inside the clarifier box 4
Part 2 11, purification assembly 1 and purification assembly 2 11 are made of several purifying filter elements 12 arranged successively, the purification filter
Core 12 by filter element shell 13, support element 14, exhaust passage 15, filter pulp layer 16, effusion slot 17, adsorption stuffing 18, outlet nozzle 19, lead
Tracheae 20, end seal head 21, gas collection shell 22, air filtration layer 23 and delivery line 24 form, 13 one end of the filter element shell and gas collection shell
Body 22 is connected, it is preferred that is connected for screw thread mouth between filter element shell 13 and gas collection shell 22 and junction increases equipped with sealing ring
Leakproofness between the two, avoids flue gas from escaping；Support element 14 is connected on 13 inner wall of the filter element shell, support element 14 is by metal
Silk bending offsets in the tubular that longitudinal section is " W " type, 14 inside of support element with filter pulp layer 16, and filter pulp layer 16 is tubular structure, filter
Offer several effusion slots 17 on cotton 16 inner wall of layer, increase the area of 16 inner wall and smoke contacts of filter pulp layer, be convenient for flue gas into
Row filtration treatment increases the efficiency of purified treatment；Gas-guide tube 20 is installed, gas-guide tube 20 is along filter pulp layer 16 in the filter pulp layer 16
Axis arrangement, several outlet nozzles 19 are installed on 20 side wall of gas-guide tube, outlet nozzle 19 facilitates, and flue gas in gas-guide tube 20 is discharged,
Adsorption stuffing 18,18 preferred activated carbon of adsorption stuffing are filled in cavity between gas-guide tube 20 and filter pulp layer 16, activated carbon is
One kind containing a large amount of micropores, has huge specific surface area, can effectively adsorb the harmful substances such as sulfur dioxide in air, dioxin
Adsorbent facilitates the harmful substances from flue gases absorption for spraying outlet nozzle 19；One end of gas-guide tube 20 is welded with end seal head 21.
The gas collection shell 22 is internally provided with air filtration layer 23, and air filtration layer 23 is preferably urged by loading Technique of Nano Pd on wire netting
Agent forms, convenient for in flue gas carbon monoxide and nitric oxide be catalyzed into carbon dioxide and nitrogen dioxide absorption, net
Change is handled；The middle part of the air filtration layer 23 is equipped with delivery line 24, and several ventholes 25 are offered on the tube wall of delivery line 24, facilitate by
Flue gas in gas collection shell 22 after filtration, purification is discharged to by venthole 25 in delivery line 24.
The delivery line 24 of the purification assembly 1 is connected to gas collecting tube 1, and air bleeding valve 1 is equipped on gas collecting tube 1,
Gas collecting tube 1 is connected to exhaust pipe 7, and gas collecting tube 28, the exhaust pipe 7 of 28 outlet side side of gas collecting tube are connected on exhaust pipe 7
Air bleeding valve 29 is installed, gas collecting tube 28 is connected to the delivery line 24 of purification assembly 2 11；The air guide of the purification assembly 1
Pipe 20 is connected to gas distribution pipe 1, and the gas-guide tube 20 of purification assembly 2 11 is connected to gas distribution pipe 23, the gas distribution pipe 1 and cloth
Tracheae 23 is connected to air inlet pipe 1.
It, can be according to purification demand selection row when flue gas is input to by air inlet pipe 1 in gas distribution pipe 1 and gas distribution pipe 23
The keying of air valve 1, to choose whether at the same time to pass through to the purified treatment of flue gas using the participation of purification assembly 1
Adjust air bleeding valve 29 keying open, control the flow velocity of flue gas, to adjust purification assembly 1, purification assembly 2 11 it is net
Change efficiency；When carrying out purified treatment using 2 11 pairs of flue gases of purification assembly 1 and purification assembly, air inlet pipe 1 is input to flue gas
It is flowed into gas distribution pipe 1 and gas distribution pipe 23, subsequently into filtering and purified treatment in several purifying filter elements 12, if clean
The setting of filter core 12 improves the effect of fume treatment, even if wherein a certain purifying filter element 12 breaks down, does not influence flue gas
Processing is normally carried out, and flue gas is discharged after being handled successively from adsorption stuffing 18, filter pulp layer 16 and air filtration layer 23, improves flue gas emission
Quality and safety, avoid polluting the environment.
The invention is not limited in above-described embodiments, on the basis of technical solution disclosed by the invention, the skill of this field
For art personnel according to disclosed technology contents, one can be made to some of which technical characteristic by not needing performing creative labour
A little simple modification, equivalent change and modifications, belong in the range of technical solution of the present invention.
In the description of this specification, it should be noted that unless otherwise clearly defined and limited, term " setting ",
" connected " and " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be directly connected, can also can be indirectly connected through an intermediary the connection inside two elements.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Claims (7)
1. a kind of flue-gas purification equipment of more cartridge combinations, including air inlet pipe (1), clarifier box (4), exhaust pipe (7) and
Purifying filter element (12), which is characterized in that purification assembly one (10) and purification assembly two (11) are installed inside clarifier box (4),
Purification assembly one (10) and purification assembly two (11) are made of several purifying filter elements (12) arranged successively, the purifying filter element
(12) by filter element shell (13), support element (14), exhaust passage (15), filter pulp layer (16), effusion slot (17), adsorption stuffing
(18), outlet nozzle (19), gas-guide tube (20), end seal head (21), gas collection shell (22), air filtration layer (23) and delivery line (24) group
At filter element shell (13) one end is connected with gas collection shell (22)；Support element (14), branch are connected on filter element shell (13) inner wall
It offsets with filter pulp layer (16) on the inside of support member (14), gas-guide tube (20), gas-guide tube (20) and filter pulp layer is installed in filter pulp layer (16)
(16) adsorption stuffing (18) is filled in the cavity between；The delivery line (24) of purification assembly one (10) connects with gas collecting tube one (5)
Logical, gas collecting tube one (5) is connected to exhaust pipe (7), and gas collecting tube two (8), gas collecting tube two (8) and purification are connected on exhaust pipe (7)
The delivery line (24) of component two (11) is connected to；The gas-guide tube (20) of the purification assembly one (10) is connected to gas distribution pipe one (2), only
The gas-guide tube (20) for changing component two (11) is connected to gas distribution pipe two (3), the gas distribution pipe one (2) and gas distribution pipe two (3) with
Air inlet pipe (1) is connected to.
2. a kind of flue-gas purification equipment of more cartridge combinations according to claim 1, which is characterized in that the filter core
It is connected for screw thread mouth between shell (13) and gas collection shell (22) and junction is equipped with sealing ring.
3. a kind of flue-gas purification equipment of more cartridge combinations according to claim 1, which is characterized in that the support
Part (14) is by wire bending in the tubular that longitudinal section is " W " type, and filter pulp layer (16) is tubular structure, on filter pulp layer (16) inner wall
Offer several effusion slots (17).
4. a kind of flue-gas purification equipment of more cartridge combinations according to claim 1, which is characterized in that the air guide
The axis that (20) are managed along filter pulp layer (16) is arranged, several outlet nozzles (19), gas-guide tube (20) are equipped on gas-guide tube (20) side wall
One end be welded with end seal head (21).
5. a kind of flue-gas purification equipment of more cartridge combinations according to claim 1, which is characterized in that the absorption
Filler (18) is activated carbon.
6. a kind of flue-gas purification equipment of more cartridge combinations according to claim 1, which is characterized in that the gas collection
Shell (22) is internally provided with air filtration layer (23), and air filtration layer (23) is to be made of loaded nanometer palladium catalyst on wire netting, the filter
It is equipped with delivery line (24) in the middle part of gas-bearing formation (23), several ventholes (25) are offered on the tube wall of delivery line (24).
7. a kind of flue-gas purification equipment of more cartridge combinations according to claim 1, which is characterized in that the gas collection
Air bleeding valve one (6) is installed, the exhaust pipe (7) of gas collecting tube two (8) outlet side side is equipped with air bleeding valve two (9) on pipe one (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810208127.0A CN108310971A (en) | 2018-03-14 | 2018-03-14 | A kind of flue-gas purification equipment of more cartridge combinations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810208127.0A CN108310971A (en) | 2018-03-14 | 2018-03-14 | A kind of flue-gas purification equipment of more cartridge combinations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108310971A true CN108310971A (en) | 2018-07-24 |
Family
ID=62901597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810208127.0A Pending CN108310971A (en) | 2018-03-14 | 2018-03-14 | A kind of flue-gas purification equipment of more cartridge combinations |
Country Status (1)
| Country | Link |
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| CN (1) | CN108310971A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114367178A (en) * | 2020-12-18 | 2022-04-19 | 南京诺令生物科技有限公司 | Realization of NO2Converted filter element material, preparation method thereof and filter element device comprising same |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2373573Y (en) * | 1999-06-28 | 2000-04-12 | 叶贤忠 | Filter for vehicle waste gas |
| CN205216477U (en) * | 2016-03-01 | 2016-05-11 | 申继文 | Novel exhaust purification of mill device |
| CN205307553U (en) * | 2015-12-31 | 2016-06-15 | 刘敬波 | Gas device was strained in oxygen uptake during internal medicine was clinical |
| CN205435370U (en) * | 2015-12-18 | 2016-08-10 | 南昌航空大学 | Stratiform vehicle air conditioner treater that admits air |
| CN105944500A (en) * | 2016-06-24 | 2016-09-21 | 浙江恒荣环保科技有限公司 | Fixed bed type honeycomb VOCs adsorption and desorption device and method |
| CN208145769U (en) * | 2018-03-14 | 2018-11-27 | 张荷友 | A kind of flue-gas purification equipment of more cartridge combinations |
-
2018
- 2018-03-14 CN CN201810208127.0A patent/CN108310971A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2373573Y (en) * | 1999-06-28 | 2000-04-12 | 叶贤忠 | Filter for vehicle waste gas |
| CN205435370U (en) * | 2015-12-18 | 2016-08-10 | 南昌航空大学 | Stratiform vehicle air conditioner treater that admits air |
| CN205307553U (en) * | 2015-12-31 | 2016-06-15 | 刘敬波 | Gas device was strained in oxygen uptake during internal medicine was clinical |
| CN205216477U (en) * | 2016-03-01 | 2016-05-11 | 申继文 | Novel exhaust purification of mill device |
| CN105944500A (en) * | 2016-06-24 | 2016-09-21 | 浙江恒荣环保科技有限公司 | Fixed bed type honeycomb VOCs adsorption and desorption device and method |
| CN208145769U (en) * | 2018-03-14 | 2018-11-27 | 张荷友 | A kind of flue-gas purification equipment of more cartridge combinations |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114367178A (en) * | 2020-12-18 | 2022-04-19 | 南京诺令生物科技有限公司 | Realization of NO2Converted filter element material, preparation method thereof and filter element device comprising same |
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Application publication date: 20180724 |
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