CN107321094A - A kind of small-sized scattered coal burning boiler coal smoke cleaning system - Google Patents
A kind of small-sized scattered coal burning boiler coal smoke cleaning system Download PDFInfo
- Publication number
- CN107321094A CN107321094A CN201710767218.3A CN201710767218A CN107321094A CN 107321094 A CN107321094 A CN 107321094A CN 201710767218 A CN201710767218 A CN 201710767218A CN 107321094 A CN107321094 A CN 107321094A
- Authority
- CN
- China
- Prior art keywords
- case
- filter residue
- swash plate
- dusting case
- pipe
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
- B01D47/027—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath by directing the gas to be cleaned essentially tangential to the liquid surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- 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
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
-
- 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
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2247/00—Details relating to the separation of dispersed particles from gases, air or vapours by liquid as separating agent
- B01D2247/04—Regenerating the washing fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
Abstract
The invention discloses the small-sized scattered coal burning boiler coal smoke cleaning system of one kind, including rough dusting case, the rough dusting case left upper end is provided with air inlet pipe, rough dusting case inner top is provided with shower tray, shower tray lower surface is evenly distributed with spray apertures, gas outlet connecting secondary dust cleaning case on the right side of rough dusting case, final dusting case inner top is provided with the air guide swash plate of several spaced sets, air guide swash plate lower end is not contacted with the liquid level in final dusting case, the inlet end of final dusting case connects conveying pump by No. two flow pipes, final dusting chamber interior wall is provided with liquid level valve, liquid level valve is electrically connected with the control unit on conveying pump, final dusting case upper right side is provided with blast pipe, the conveying pump is fixed on storage tank upper end, the present invention is simple in construction, rationally, realize the purification to flue gas, help to realize the recycling of water resource, play a part of water saving, it is practical.
Description
Technical field
It is specifically a kind of small-sized scattered coal burning boiler coal smoke cleaning system the present invention relates to a kind of cleaning system.
Background technology
Haze is the general designation of mist and haze, is a kind of weather phenomenon, also referred to as gray haze (mist and clouds in the twilight), refer to dust in air, sulfuric acid,
A large amount of imperceptible dry grit such as nitric acid, organic hydrocarbon compounds uniformly swim in the air, make air muddy, the visual field is obscured
And cause visibility deterioration, if horizontal visibility is less than ten thousand metres, the aerosol systems of this non-aqueous thing composition are made
Into obstruction to vision be referred to as haze (Haze) or gray haze (Dust-haze).
The coal smoke that currently known medium small boiler is produced is mostly all in line into air, and the dust of coal smoke can be caused seriously
Environmental pollution, and produce a large amount of hazes, influence people are healthy.In order to solve the problem, people are removed using clarifier
Dirt.But existing various purification utensil effects are poor, and efficiency of dust collection is relatively low, it is difficult to meet actual demand.
The content of the invention
It is an object of the invention to provide the small-sized scattered coal burning boiler coal smoke cleaning system of one kind, to solve in above-mentioned background technology
The problem of proposition.
To achieve the above object, the present invention provides following technical scheme：
A kind of small-sized scattered coal burning boiler coal smoke cleaning system, including rough dusting case, the rough dusting case left upper end are provided with
Air inlet pipe, rough dusting case inner top is provided with shower tray, and shower tray lower surface is evenly distributed with the right side of spray apertures, rough dusting case
Gas outlet connecting secondary dust cleaning case, final dusting case inner top is provided with the air guide swash plate of several spaced sets, and air guide is oblique
Plate lower end is not contacted with the liquid level in final dusting case, and the inlet end of final dusting case connects conveying pump by No. two flow pipes,
Final dusting chamber interior wall is provided with liquid level valve, and liquid level valve is electrically connected with the control unit on conveying pump, final dusting case upper right side
Provided with blast pipe, the conveying pump is fixed on storage tank upper end, and the water inlet end of conveying pump is stretched into inside storage tank, and conveying pump is another
Individual water side connects shower tray by a flow pipe, and rough dusting case and final dusting the case lower end is designed with downcomer,
Downcomer lower end connects collector pipe, and the water inlet that there is upper end collector pipe lower end with filter residue case is connected, was provided with the filter residue case
Swash plate is filtered, filtering swash plate surface is evenly distributed with filter bores, and filtering swash plate right-hand member is higher than left end, the filter where filtering swash plate left end
Slag case, which is provided with, removes cinder notch, except removal of impurities door is provided with cinder notch, and sealing gasket, filtering swash plate lower section are provided between removal of impurities door and filter residue case
Filter residue case in be provided with even gas disk, even gas face left end air inlet be provided with steel pipe, steel pipe pass through filter residue case, and with ozone occur
The output end connection of device, the filter residue case left upper end is provided with escape pipe, and escape pipe upper end connection muffler, muffler right-hand member is stretched into
In rough dusting case, the muffler lower surface in rough dusting case is evenly distributed with fumarole, the filter residue case lower right side
Discharge gate be provided with acid-base neutralization case by connecting storage tank, communicating pipe between storage tank and filter residue case communicating pipe.
It is used as further scheme of the invention：The angle of the air guide swash plate and horizontal plane is acute angle.
It is used as further scheme of the invention：Mouth is added provided with alkali lye in the acid-base neutralization case upper end.
It is used as further scheme of the invention：The removal of impurities door is connected by bolt with filter residue case.
It is used as further scheme of the invention：The steel pipe is provided with check valve.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention is simple and reasonable for structure, passes through rough dusting case
Washing, purifying is carried out to flue gas with final dusting case, the sewage after washing enters in slag removal tank, filtering swash plate right-hand member is higher than left end,
Filter residue case where filtering swash plate left end, which is provided with, removes cinder notch, except removal of impurities door is provided with cinder notch, is set between removal of impurities door and filter residue case
There is sealing gasket, removal of impurities door is connected by bolt with filter residue case, and this filtering swash plate being obliquely installed is convenient by contaminant filter,
And case removal of impurities door is guided, so as to facilitate the cleaning in later stage, then produce ozone using ozone generator purifies to sewage
Processing, recycles the sour gas in acid-base neutralization case and in flue gas, and then the acid ion in sewage is neutralized, and contributes to reality
The recycling of existing water resource, plays a part of water saving, practical.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Wherein：Rough dusting case 1, final dusting case 2, filter residue case 3, storage tank 4, air inlet pipe 5, muffler 6, escape pipe 7,
Fumarole 8, filtering swash plate 9, removal of impurities door 10, except cinder notch 11, even gas disk 12, communicating pipe 13, ozone generator 14, collector pipe 15,
Downcomer 16, flow pipe 17, conveying pump 18, No. two flow pipes 19, blast pipe 20, flow guiding inclined plate 21, liquid level valve 22, a sprays
Disk 24, acid-base neutralization case 25.
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 is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Referring to Fig. 1, in the embodiment of the present invention, a kind of small-sized scattered coal burning boiler coal smoke cleaning system, including rough dusting case
1, the left upper end of rough dusting case 1 is provided with air inlet pipe 5, and the inner top of rough dusting case 1 is provided with shower tray 24, the lower end of shower tray 24
Face is evenly distributed with spray apertures, and then is cleaned to entering the flue gas in rough dusting case 1, going out on the right side of rough dusting case 1
Gas port connecting secondary dust cleaning case 2, the inner top of final dusting case 2 is provided with the air guide swash plate 21 of several spaced sets, and air guide is oblique
The angle of plate 21 and horizontal plane is acute angle, and the lower end of air guide swash plate 21 is not contacted with the liquid level in final dusting case 2, final dusting case
2 inlet end connects conveying pump 18 by No. two flow pipes 9, and the inwall of final dusting case 2 is provided with liquid level valve 22, the electricity of liquid level valve 22
Property connection conveying pump 18 on control unit, and then the convenient liquid level for keeping final dusting case 2, the upper right of final dusting case 2
Side is provided with blast pipe 20, and the flue gas after being cleaned enters after final dusting case 2, and in the presence of flow guiding inclined plate 21, flue gas can be pasted
Dampening surface current is moved, so as to further be washed to flue gas, is then discharged again from blast pipe 20, the conveying pump 18 is fixed on
The upper end of storage tank 4, the water inlet end of conveying pump 18 is stretched into inside storage tank 4, and water is sent in another water side of conveying pump 18 by No. one
Pipe 17 connects shower tray 24, and rough dusting case 1 and final dusting case 2 lower end is designed with downcomer 16, the lower end of downcomer 16
Collector pipe 15 is connected, the water inlet that there is upper end the lower end of collector pipe 15 with filter residue case 3 is connected, it is oblique provided with filtering in the filter residue case 3
Plate 9, filtering swash plate 9 surface is evenly distributed with filter bores, and filtering swash plate 9 right-hand member is higher than left end, the filter where the filtering left end of swash plate 9
Slag case 3, which is provided with, removes cinder notch 11, except removal of impurities door 10 is provided with cinder notch 11, is provided with sealing gasket between removal of impurities door 10 and filter residue case 3, removes
Miscellaneous door 10 is connected by bolt with filter residue case 3, and this filtering swash plate 9 being obliquely installed is convenient by contaminant filter, and guides
Case removal of impurities door 10, so as to facilitate the cleaning in later stage, even gas disk 12, even gas disk 12 are provided with the filter residue case 3 of the lower section of filtering swash plate 9
The air inlet of left end is provided with steel pipe, and steel pipe passes through filter residue case 3, and is connected with the output end of ozone generator 14, on steel pipe 12
Provided with check valve, it is that ozone generator 14 produces ozone in device work, is then uniformly sprayed by even gas disk 12, so it is right
Sewage is purified, on the one hand for disinfection processing, on the other hand by reproducibility ionic oxide formation in sewage, the filter residue case
3 left upper ends are provided with escape pipe 7, and the upper end of escape pipe 7 connects muffler 6, and the right-hand member of muffler 6 is stretched into rough dusting case 1, positioned at first
The lower surface of muffler 6 in step dust cleaning case 1 is evenly distributed with fumarole 8, thus can be using ozone to entering rough dusting case 1
Interior flue gas is pre-processed, and further increases the clean-up effect of device, and the discharge gate of the lower right side of filter residue case 3 passes through even
Siphunculus 13 connects storage tank 4, and the communicating pipe 13 between storage tank 4 and filter residue case 3 is provided with acid-base neutralization case 25, acid-base neutralization case
Mouth is added in 25 upper ends provided with alkali lye, and then the acid ion in sewage is neutralized, and helps to realize the recycling of water resource, rises
It is practical to the effect of water saving.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the claim involved by limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (5)
1. a kind of small-sized scattered coal burning boiler coal smoke cleaning system, including rough dusting case (1), it is characterised in that the rough dusting
Case (1) left upper end is provided with air inlet pipe (5), and rough dusting case (1) inner top is provided with shower tray (24), and shower tray (24) lower surface is equal
The even gas outlet connecting secondary dust cleaning case (2) being distributed with the right side of spray apertures, rough dusting case (1), final dusting case (2) inner top
Liquid level in air guide swash plate (21) provided with several spaced sets, air guide swash plate (21) lower end and final dusting case (2) is not
Contact, the inlet end of final dusting case (2) is connected on conveying pump (18), final dusting case (2) inwall by No. two flow pipes (9)
Provided with liquid level valve (22), liquid level valve (22) is electrically connected with the control unit on conveying pump (18), and final dusting case (2) upper right side is set
There is blast pipe (20), the conveying pump (18) is fixed on storage tank (4) upper end, and the water inlet end of conveying pump (18) stretches into storage tank
(4) internal, conveying pump (18) another water side connects shower tray (24), the rough dusting case by a flow pipe (17)
And final dusting case (2) lower end is designed with downcomer (16), downcomer (16) lower end connection collector pipe (15), collector pipe (1)
(15) lower end is connected with the water inlet that filter residue case (3) has upper end, provided with filtering swash plate (9) in the filter residue case (3), filters swash plate
(9) surface is evenly distributed with filter bores, and filtering swash plate (9) right-hand member is higher than left end, the filter residue case where filtering swash plate (9) left end
(3) it is provided with and removes cinder notch (11), except cinder notch (11) place is provided with removal of impurities door (10), is provided between removal of impurities door (10) and filter residue case (3)
Even gas disk (12) is provided with filter residue case (3) below sealing gasket, filtering swash plate (9), the air inlet of even gas disk (12) left end is provided with
Steel pipe, steel pipe passes through filter residue case (3), and is connected with the output end of ozone generator (14), and filter residue case (3) left upper end is set
There is escape pipe (7), escape pipe (7) upper end connection muffler (6), muffler (6) right-hand member is stretched into rough dusting case (1), is located at
Muffler (6) lower surface in rough dusting case (1) is evenly distributed with fumarole (8), the discharge of filter residue case (3) lower right side
Mouth connects storage tank (4) by communicating pipe (13), and the communicating pipe (13) between storage tank (4) and filter residue case (3) is provided with soda acid
Neutralize case (25).
2. the small-sized scattered coal burning boiler coal smoke cleaning system of one kind according to claim 1, it is characterised in that the air guide swash plate
(21) angle with horizontal plane is acute angle.
3. the small-sized scattered coal burning boiler coal smoke cleaning system of one kind according to claim 1, it is characterised in that the acid-base neutralization
Mouth is added provided with alkali lye in case (25) upper end.
4. the small-sized scattered coal burning boiler coal smoke cleaning system of one kind according to claim 1, it is characterised in that the removal of impurities door
(10) it is connected by bolt with filter residue case (3).
5. the small-sized scattered coal burning boiler coal smoke cleaning system of one kind according to claim 1, it is characterised in that the steel pipe (12)
It is provided with check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710767218.3A CN107321094A (en) | 2017-08-31 | 2017-08-31 | A kind of small-sized scattered coal burning boiler coal smoke cleaning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710767218.3A CN107321094A (en) | 2017-08-31 | 2017-08-31 | A kind of small-sized scattered coal burning boiler coal smoke cleaning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107321094A true CN107321094A (en) | 2017-11-07 |
Family
ID=60204719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710767218.3A Pending CN107321094A (en) | 2017-08-31 | 2017-08-31 | A kind of small-sized scattered coal burning boiler coal smoke cleaning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107321094A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086095A (en) * | 2017-12-22 | 2018-05-29 | 湖南望隆企业管理咨询有限公司 | A kind of road construction pitch with smoke filtration is pulled a cart |
| CN110777627A (en) * | 2019-11-14 | 2020-02-11 | 张景生 | Road maintenance is with milling machinery with dust fall function |
| CN111991955A (en) * | 2020-08-20 | 2020-11-27 | 胡淑美 | Multistage circulating filter device for underground dust fall |
| CN113091193A (en) * | 2021-02-24 | 2021-07-09 | 中国人民解放军军事科学院国防工程研究院 | Efficient filtering type integrated air purification and disinfection equipment |
| CN114452800A (en) * | 2022-02-10 | 2022-05-10 | 杭州依诚医疗器械有限公司 | Center suction exhaust emission heat-free disinfection and sterilization system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2246525A (en) * | 1990-07-30 | 1992-02-05 | Chen Chi Shiang | Gas-cleaning apparatus |
| JPH08323255A (en) * | 1995-05-31 | 1996-12-10 | Otsuka Hake Seizo Kk | Apparatus for purifying coating booth |
| CN203458937U (en) * | 2013-08-30 | 2014-03-05 | 武汉和尔环保科技有限公司 | Waste gas treatment device |
| CN105169901A (en) * | 2015-07-16 | 2015-12-23 | 上海应用技术学院 | Air purifier |
| CN205145861U (en) * | 2015-11-09 | 2016-04-13 | 北京源深节能技术有限责任公司 | Flue gas treatment equipment |
| CN205216493U (en) * | 2015-12-24 | 2016-05-11 | 吴振明 | Waste water waste gas integrated processing system |
| CN106422601A (en) * | 2016-11-24 | 2017-02-22 | 杨朴 | Boiling furnace dust removal and desulfurization tower |
| CN106669324A (en) * | 2017-03-03 | 2017-05-17 | 南京嘉源润新环保科技有限公司 | Flue gas emission reduction processing system |
| CN206273327U (en) * | 2016-11-01 | 2017-06-23 | 浙江省环境工程有限公司 | A kind of aluminum dust wet type processing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2246525A (en) * | 1990-07-30 | 1992-02-05 | Chen Chi Shiang | Gas-cleaning apparatus |
| JPH08323255A (en) * | 1995-05-31 | 1996-12-10 | Otsuka Hake Seizo Kk | Apparatus for purifying coating booth |
| CN203458937U (en) * | 2013-08-30 | 2014-03-05 | 武汉和尔环保科技有限公司 | Waste gas treatment device |
| CN105169901A (en) * | 2015-07-16 | 2015-12-23 | 上海应用技术学院 | Air purifier |
| CN205145861U (en) * | 2015-11-09 | 2016-04-13 | 北京源深节能技术有限责任公司 | Flue gas treatment equipment |
| CN205216493U (en) * | 2015-12-24 | 2016-05-11 | 吴振明 | Waste water waste gas integrated processing system |
| CN206273327U (en) * | 2016-11-01 | 2017-06-23 | 浙江省环境工程有限公司 | A kind of aluminum dust wet type processing device |
| CN106422601A (en) * | 2016-11-24 | 2017-02-22 | 杨朴 | Boiling furnace dust removal and desulfurization tower |
| CN106669324A (en) * | 2017-03-03 | 2017-05-17 | 南京嘉源润新环保科技有限公司 | Flue gas emission reduction processing system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086095A (en) * | 2017-12-22 | 2018-05-29 | 湖南望隆企业管理咨询有限公司 | A kind of road construction pitch with smoke filtration is pulled a cart |
| CN110777627A (en) * | 2019-11-14 | 2020-02-11 | 张景生 | Road maintenance is with milling machinery with dust fall function |
| CN111991955A (en) * | 2020-08-20 | 2020-11-27 | 胡淑美 | Multistage circulating filter device for underground dust fall |
| CN113091193A (en) * | 2021-02-24 | 2021-07-09 | 中国人民解放军军事科学院国防工程研究院 | Efficient filtering type integrated air purification and disinfection equipment |
| CN114452800A (en) * | 2022-02-10 | 2022-05-10 | 杭州依诚医疗器械有限公司 | Center suction exhaust emission heat-free disinfection and sterilization system |
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Application publication date: 20171107 |