CN206414968U - A kind of multistage filtering tower and its desulfation dust-extraction device - Google Patents
A kind of multistage filtering tower and its desulfation dust-extraction device Download PDFInfo
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- CN206414968U CN206414968U CN201621331077.8U CN201621331077U CN206414968U CN 206414968 U CN206414968 U CN 206414968U CN 201621331077 U CN201621331077 U CN 201621331077U CN 206414968 U CN206414968 U CN 206414968U
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Abstract
The utility model is related to environmental protection equipment, is a kind of desulfation dust-extraction device, specially a kind of multistage filtering tower and its desulfation dust-extraction device.A kind of multistage filtering tower, including clear water segregation section, spray section and the slurries segregation section being sequentially connected in the first direction.Spray section is provided with the air inlet for injecting flue gas to be filtered, and spray section one end is provided with the second smoke tube for also wearing and being connected by two ends respectively at clear water segregation section and slurries segregation section in the shower for spraying flue gas, spray section.A kind of desulfation dust-extraction device, including demister and Multistage filtering device.And demister is connected with Multistage filtering device.The utility model finally realizes the technique effect of high-efficiency desulfurization and deep desulfuration.
Description
Technical field
The utility model is related to environmental protection equipment, is a kind of desulfation dust-extraction device, specially a kind of multistage filtering tower and its de-
Sulphur dust arrester.
Background technology
The desulfation dust-extraction device for being used to reduce the content of sulfur dioxide containing sulfur dioxide gas in the prior art is generally spray
Drench eddy flow bubbling desulfurization and dedusting technology.The technical scheme of this technology be generally flue gas is humidified, SO2 classification absorbs, oxidation, in
A single gas-liquid is merged into, crystallization and the technical process such as dedusting demisting --- in solid phase reactor, so that complete
Into whole desulfurization and dedusting deep purifying process.
Utility model content
The purpose of this utility model is offer multistage filtering tower, can be by being provided with Multistage filtering device by flue gas
Sulfur dioxide gas carries out classification absorption.Realize the technique effect of high-efficiency desulfurization and deep desulfuration.
What the utility model was realized in：
A kind of multistage filtering tower, including clear water segregation section, spray section and the slurries segregation section being sequentially connected.Spray section is set
There is the air inlet for injecting flue gas to be filtered.Spray section one end is provided with the shower for spraying flue gas, spray section also
It is equipped with two ends and is located at multiple first smoke tubes that clear water segregation section and slurries segregation section are connected respectively.
Further, it is provided with slurry pool in slurries segregation section.The first smoke tube in slurries segregation section is stretched into
Slurry pool.
Further, multiple second smoke tubes are provided between spray section and the slurry pool.Multiple second flue gases are led
Pipe is staggered with multiple first smoke tubes.
Further, one end that the second smoke tube is contacted with slurry pool is provided with bubbling head.Bubbling head stretches to slurries
In pond.
Further, bubbling head extends to away from described second smoke tube one end, and formation is opened with the second smoke tube
The bubbling face of mouth end connection.Bubbling face is provided with bubbling gate hole.Extend bubbling post along the direction away from spray section in bubbling face.
Further, the one end of clear water segregation section away from the first smoke tube is provided with bubbling bubble-cap.
Further, the liquid level of slurry that slurry pool is connected with for adjusting the slurry level being stored in slurry pool adjusts dress
Put.Liquid level of slurry adjusting means includes level display device and the conduit stretched in slurry pool, and conduit is also associated with water pump.
Further, the clear water liquid level that clear water segregation section is connected with for adjusting clear water water level in clear water segregation section adjusts dress
Put.Clear water liquid level regulation device includes the U-tube being connected with clear water segregation section, and the water pump being connected with U-tube.
The utility model additionally provides the desulfation dust-extraction device based on above-mentioned multistage filtering tower, realizes the multistage mistake of reduction
After filter tower filtering in clean gas water content effect.
What the utility model was realized in：
A kind of desulfation dust-extraction device, including demister and above-mentioned Multistage filtering device.And demister and multistage mistake
Filter device connection.
Further, demister includes the 3rd flue and demister.The two ends of 3rd flue respectively also with
Clear water segregation section, demister connection.The volume of 3rd flue gradually increases along clear water segregation section to the direction of slurries segregation section
Plus.
The beneficial effect of such scheme：
The utility model is by being provided with spray section, clear water segregation section and connecting clear water segregation section with slurries segregation section
First smoke tube, realizes and is combined together spray, three kinds of desulfurization technologies of eddy flow and bubbling.Multistage filtering is realized, is increased
The strong intensity and the effect of dedusting of desulfurization.
The utility model also by being provided with the 3rd flue that volume changes, will contain water using venturi principle
Clean gas is quickly fed through demister, adds the flowing velocity of gas, realizes the technique effect of high-efficiency desulfurization.Demisting
Device is absorbed the moisture in pure air, has reached the technique effect of dry gas.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the utility model embodiment, it will use below required in embodiment
Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by
Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also
To obtain other related accompanying drawings according to these accompanying drawings.
A kind of desulfation dust-extraction device structural representation that Fig. 1 provides for the utility model；
The structural representation of demisting plate in the demister that Fig. 2 provides for the utility model；
A kind of multistage filtering tower structure schematic diagram that Fig. 3 provides for the utility model；
Fig. 4 is the first smoke tube and the second smoke tube position relationship schematic diagram in the utility model multistage filtering tower；
Fig. 5 is the structural representation of the utility model bubbling head.
Icon：100- desulfation dust-extraction devices；200- multistage filtering towers；110- demisters；120- neat stress is exported；111-
Demister；The flues of 112- the 3rd；113- demisting plates；114- demister skeletons；115- deflection plates；210- slurries segregation sections；
220- spray sections；230- clear water segregation sections；240- first directions；The smoke tubes of 250- first；The smoke tubes of 260- second；270-
Bubbling bubble-cap；280- bubbling heads；290- gas approach；211- slurry pools；212- liquid level of slurry adjusting meanss；221- sprays chamber；
222- showers；223- spray headers；231- clear water disengagement chambers；232- clear water liquid level regulation devices；233-U type pipes；234- water
Pump；281- bubblings face；282- bubbling gate hole；283- bubbling posts.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched
The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Generally here described in accompanying drawing and
The component of the utility model embodiment shown can be arranged and designed with a variety of configurations.Therefore, below to attached
The detailed description of the embodiment of the present utility model provided in figure is not intended to limit claimed scope of the present utility model,
But it is merely representative of selected embodiment of the present utility model.Based on the embodiment in the utility model, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, belongs to the model of the utility model protection
Enclose.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it further need not be defined and explained in subsequent accompanying drawing.
, it is necessary to explanation, the orientation of the instruction such as term " on ", " under ", " interior ", " outer " in description of the present utility model
Or position relationship is that, based on orientation shown in the drawings or position relationship, or the utility model product is usually put when using
Orientation or position relationship, are for only for ease of description the utility model and simplify description, rather than indicate or imply signified dress
Put or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the utility model
Limitation.
In description of the present utility model, in addition it is also necessary to which explanation, unless otherwise clearly defined and limited, term " are set
Put ", " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected,
Or be integrally connected；Can be mechanical connection or electrical connection；Can be joined directly together, intermediary can also be passed through
It is indirectly connected to, can is the connection of two element internals.For the ordinary skill in the art, it can be managed with concrete condition
Solve concrete meaning of the above-mentioned term in the utility model.
According to Fig. 1, a kind of desulfation dust-extraction device 100 is connected with demister 110 and multistage filtering tower 200 in turn.Desulfurization
Dust arrester 100 can be complete housing, and different functional sections are divided into by different structures.Or, can also be by only
The vertical functional section with different disposal ability is formed by connecting by modes such as welding, rivetings.
Demister 110 can be used to remove the moisture in flue gas, and it is dry gas to make the purifying smoke given off.Refer to
In Fig. 1, the present embodiment, demister 110 is that inside is empty cavity body structure, and 240 is disposed with demisting in the first direction
The flue 112 of device 111 and the 3rd.Demister 111 is connected by the 3rd flue 112 with spray section 220.In the present embodiment
In, the 3rd flue 112 is the Venturi tube that 240 volumes gradually increase along a first direction.First party in the present embodiment
It is exactly the direction by A to B as described in Figure 1 to 240.
Refering to Fig. 1, in the present embodiment, demister 111 is in the first direction 240 in hollow cavity, the cavity of demister 111
It is disposed with multiple demisting plates 113 as shown in Figure 2；Multiple Hes of demister skeleton 114 are provided with each demisting plate 113
The deflection plate 115 being equipped with demister skeleton 114.And each demister skeleton 114 is pitched with the cross of deflection plate 115 and arranged
Into latticed.
Multistage filtering tower 200 is provided with different functional sections, realizes the dedusting denitration operation of flue gas.Refering to Fig. 3, this reality
Apply in example, multistage filtering tower 200 240 is connected with clear water segregation section 230, spray section 220 and slurries separation in turn in the first direction
Section 210.
Clear water segregation section 230, spray section 220 and slurries segregation section 210 are all that inside is empty cavity body structure.And each section it
Between connection make the formation integral shape or split shape of desulfation dust-extraction device 100, it is in the present embodiment, slurries segregation section 210, clear
What water segregation section 230 and the combination of spray section 220 were formed is integral shape.Slurries segregation section 210, clear water segregation section 230 and spray
The shape of 220 each sections of section can be adjusted according to specific design requirement, and for example the profile of three is all identical in the present embodiment.And
Slurries segregation section 210, clear water segregation section 230 and spray section 220 can be a variety of stereochemical structures hollow cavity, i.e., positive tetrahedron,
Cylinder etc., in the present embodiment, the structure of slurries segregation section 210, clear water segregation section 230 and spray section 220 is all cylinder
Structure.
Further, it is also provided with connecting spray section 220 and slurries between spray section 220 and slurries segregation section 210
Second smoke tube 260 of segregation section 210, while the company of being also provided between slurries segregation section 210 and clear water segregation section 230
First smoke tube 250 of logical slurries segregation section 210 and clear water segregation section 230.
In the present embodiment, the second smoke tube 260 is multiple evenly distributed pipes, and the second adjacent two-by-two flue gas leads
Interval is provided between pipe 260, and interval is connected with spray section 220 with slurries segregation section 210.And in the present embodiment, the
Two smoke tubes 260 and the first smoke tube 250 are set on a different plane, i.e., the first smoke tube 250 is arranged on second
The top of smoke tube 260, but the two and be not attached to.And first smoke tube 250 and adjacent the second smoke tube 260 two-by-two
Interval be connected.
Referring to Fig. 3, slurries segregation section 210 includes the slurry pool 211 for being used to deposit slurries, in addition to and slurry pool
The liquid level of slurry adjusting means 212 of 211 connections.Slurry pool 211 is connected by the first smoke tube 250 with clear water segregation section 230,
It is connected by the second smoke tube 260 with spray section 220.
The shape of slurry pool 211 can be identical or different with the shape of slurries segregation section 210, in the present embodiment, slurries separation
The shape and structure of section 210 is column body, then the shape of slurry pool 211 can be alternatively other stereochemical structures for column body.In this reality
Apply in example, the shape of slurry pool 211 identical with slurries segregation section 210 is all vertical column structure.In other embodiments, if any slurry
When liquid pool 211 is other structures, it can be formed between the outer surface of slurry pool 211 and the inner surface of slurries segregation section 210 for obstructing
Slurry pool 211 and the wall-like solid construction of slurries segregation section 210.
Liquid level of slurry adjusting means 212 include outside level display device (not shown) and with leading that slurry pool 211 is connected
Pipe, in addition to the water pump (not shown) connected with conduit.Level display device can connect to be intuitively observable with slurry pool 211
Logical observation groove or the display centre by being provided with liquid level sensor in slurry pool 211 and being connected with liquid level sensor,
Can also be to be arranged on that the observation window outside slurries segregation section 210 etc. is any can be directly observed liquid level in slurry pool 211
Device.In the present embodiment, level display device be connected with slurry pool 211 be arranged on slurries segregation section 210 lateral wall
Observe groove.Observe the liquid level in groove and keep real-time synchronization with the liquid level in slurry pool 211.Adjusting means is to realize to slurry pool
The power source of injection slurries or extraction slurries, is in the present embodiment water pump 234 in 211.
Further, as shown in figure 3, being provided with bubbling at the openend that the second smoke tube 260 is contacted with slurry pool 211
First 280.
Refering to Fig. 3, bubbling first 280 is connected with the openend of the second smoke tube 260, and to outside the second smoke tube 260
Side extends the rounded face to be formed along the rotation extension of the outside of the second smoke tube 260.Refering to Fig. 5, on the surface of bubbling first 280
The bubbling face of the second smoke tube 260 of connection is provided with, and bubbling extends away from described second smoke tube one end.Bubbling
Face sets bubbling gate hole 282, and along extending longitudinally downward out bubbling post 283 at the circumferential edges of rounded face.
In the present embodiment, bubbling face 281 and bubbling post 283 are stretched in slurry pool 211, and be arranged on the liquid level of slurries with
Under.
Slurries in slurry pool 211 are can be with the mixed solution of sulfur dioxide absorption.In the present embodiment, mixed solution is
Limestone slurry solution, lime stone mixes through pulverizing and jevigating powdering and water and limestone slurry solution is made.
Referring to Fig. 3, clear water segregation section 230 include clear water disengagement chamber 231 and connected with clear water disengagement chamber 231 it is clear
Water liquid level regulation device 232, in addition to it is arranged on the bubbling bubble-cap 270 as shown in Figure 4 of the upper end of clear water segregation section 230.
The shape of clear water disengagement chamber 231 in the present embodiment can be identical or different with the shape of clear water disengagement chamber 231, this implementation
In example, the shape and structure of clear water segregation section 230 is column body, then the shape of clear water disengagement chamber 231 can be alternatively it for column body
His stereochemical structure.In the present embodiment, it is all vertical column structure that the shape of clear water disengagement chamber 231 is identical with clear water segregation section 230.
In other embodiments, during if any clear water disengagement chamber 231 for other structures, the outer surface of clear water disengagement chamber 231 is separated with clear water
It can be formed between 230 inner surfaces of section for obstructing slurry pool 211 and the wall-like solid construction of clear water segregation section 230.
Clear water liquid level regulation device 232 includes outside level display device and the conduit connected with clear water disengagement chamber 231, also
Including the adjusting means connected with conduit.
Level display device can be the observable observation groove connected with clear water disengagement chamber 231 directly perceived or by starching
Liquid level sensor and the display centre being connected with liquid level sensor are provided with liquid pool 211, can also be to be arranged on slurries separation
Observation window outside section 210 etc. is any can be directly observed the device of liquid level in slurry pool 211.In the present embodiment, liquid level
Display device is the U-tube 233 that is arranged on outside clear water segregation section 230 and with stretching in clear water disengagement chamber 231 and U-tube
The conduit of 233 connections, is attached between U-tube 233 and conduit by flexible link in the present embodiment.In the present embodiment,
Flexible link is flexiplast conduit, but in other embodiments, however not excluded that with being flexible coupling in addition.Clear water liquid in U-tube 233
Position keeps real-time synchronization with the liquid level in slurry pool 211.
Adjusting means for realize into slurry pool 211 inject slurries or extract out slurries power source, in the present embodiment for
Water pump 234.Water pump 234 can directly be connected by U-tube 233 with slurry pool 211, can also be provided with drainpipe with it is U-shaped
Pipe 233 is connected.In the present embodiment, water pump 234 is directly connected with U-tube 233.
Bubbling bubble-cap 270 is additionally provided with the upper end of clear water disengagement chamber 231.
Bubbling bubble-cap 270 is inverted T-type structure, including Connectivity Section (not shown) and opening (not shown), two ends at opening
Diameter is greater than the diameter of Connectivity Section.
Spray section 220 includes spray chamber 221 and is arranged on the shower 222 on spray chamber 221 top, in spray chamber 221
The gas approach 290 for realizing that flue gas to be filtered enters spray section 220 is offered on the wall of side.
The shape of spray chamber 221 in the present embodiment can be identical or different with the shape of spray section 220, in the present embodiment,
The shape and structure of spray section 220 is column body, then sprays the shape of chamber 221 and can be alternatively other stereochemical structures for column body.
In the present embodiment, the shape of spray chamber 221 identical with spray section 220 is all vertical column structure.
Shower 222 is connected with extraneous spray header 223, for providing the spray sprayed into shower 222
Liquid.Spray liquid can be used to reduce the content of the bulky grain pollutant in flue gas for clear water spray liquid, can also be relatively low for concentration
Lime stone solution, the content for reducing the sulfur dioxide in flue gas.In the present embodiment, spray liquid is the relatively low lime stone of concentration
Mixed solution, can play a part of being settled the large particulate matter in flue gas, moreover it is possible to which playing reduces certain titanium dioxide
The effect of sulfur content.The leakage fluid dram for discharging spray waste liquid in spray chamber 221 is additionally provided with the lower end of spray chamber 221.
The operation principle for the desulfation dust-extraction device 100 that the present embodiment is provided：
Flue gas containing higher content of sulfur dioxide enters to spray section with certain movement velocity from gas approach 290
In 220, the bulky grain flue dust in flue gas is settled and gone back by the low concentration lime stone mixed solution sprayed in shower 222
The content of sulfur dioxide is set to decrease.The flue gas for completing spray operation enters to slurry pool 211 by the second smoke tube 260
It is interior, carry out desulfurization process with slurry pool 211.Second smoke tube 260 is provided with bubbling head stretching to the one end of slurry pool 211
280, bubbling first 280 is arranged in slurries, and flue gas is entered to by bubbling first 280 and desulfurization process is carried out in slurries, slurries be compared with
Sulfur dioxide in flue gas is carried out desulfurization process by the lime stone mixed solution of high concentration.Flue gas after desulfurization passes through the first flue gas
Conduit 250 is injected into clear water disengagement chamber 231, and the internal memory of clear water disengagement chamber 231 contains industrial water, the desulfurization by clear water to injection
Flue gas afterwards is filtered again, and the flue dust of the also remaining in flue gas is filtered.Flue gas after clear water is filtered passes through
3rd flue 112 is delivered to demister 111, and the moisture remained in flue gas is diluted again by net cigarette by demister 111
Discharge gas outlet 120.
In the present embodiment, when carrying out dust-removal and desulfurizing to flue gas, liquid level of slurry adjusting means 212 and clear water can also be passed through
Liquid level regulation device 232 realizes the liquid level regulation of slurries and clear water.For example：Argon gas is carried out before dust-removal and desulfurizing, slurries are separated
Slurries and clear water are stored respectively in section 210, clear water segregation section 230, are adjusted by liquid level of slurry adjusting means 212 and clear water liquid level
The regulation of regulating device 232 so that increase therewith as the amount of the flue gas of entrance increases liquid level of slurry and clear water liquid level；When entrance
The amount of flue gas gradually lowers, and liquid level of slurry and clear water liquid level are also decreased.
In the present embodiment, when flue gas pollutant content, machine utilization, the quality of lime stone mixed solution and discharge refer to
Mark changes, and the liquid level of slurries and the liquid level of clear water are when reaching capacity.Can also be by adjusting inserting for the second smoke tube 260
Enter depth and improve the ph values of slurries to control the discharge index of sulfur dioxide.
The present embodiment realizes spray filtering by spray, and realizing slurries desulfurization by slurries filters, then passes through clear water
Realize and filter again.By the filtering of three-level, the technique effect of high-efficiency desulfurization and deep desulfuration is realized.Also, in slurries
Bubbling operation is realized by bubbling first 280 in sweetening process, contact of the flue gas with slurries is increased, improves the effect of desulfurization
And efficiency.The technology effect of flue gas cyclone desulfuration is realized by being provided with the second smoke tube 260 and the first smoke tube 250
Really.
The present embodiment, when the flue gas concentration of entrance is in 10000mg/Nm3When following, outlet SO can be realized2Concentration is less than
35mg/Nm3Minimum discharge requirement, save energy consumption 20-40% than spraying technique, energy consumption 10-20% saved than tray technology.It is real
Deep desulfuration is showed.
When absorption tower entrance dust concentration is in 150mg/Nm3When following, outlet dust concentration can reach 10-4mg/Nm3.Go
Except HCl and HF is more than 90%, mercury and cadmium are more than 50%.Realize depth dedusting.
Claims (10)
1. a kind of multistage filtering tower, it is characterised in that including the clear water segregation section being sequentially connected, spray section and slurries segregation section；
The spray section is provided with the air inlet for injecting flue gas to be filtered；Described spray section one end is provided with for spraying flue gas
Shower；Also be equipped with that two ends are located at that clear water segregation section and the slurries segregation section connects respectively in the spray section multiple the
One smoke tube.
2. multistage filtering tower according to claim 1, it is characterised in that be provided with slurry pool in the slurries segregation section；Position
The slurry pool is stretched into first smoke tube in the slurries segregation section.
3. multistage filtering tower according to claim 2, it is characterised in that set between the spray section and the slurry pool
There are multiple second smoke tubes；The multiple second smoke tube and the multiple first smoke tube are staggered.
4. multistage filtering tower according to claim 3, it is characterised in that second smoke tube connects with the slurry pool
Tactile one end is provided with bubbling head；The bubbling head is stretched in the slurry pool.
5. multistage filtering tower according to claim 4, it is characterised in that the bubbling head is led to away from second flue gas
Pipe one end extends, and forms the bubbling face being connected with the openend of second smoke tube；The bubbling face is provided with bubbling grid
Hole；Extend bubbling post along the direction away from the spray section in the bubbling face.
6. multistage filtering tower according to claim 1, it is characterised in that the clear water segregation section is away from first flue gas
One end of conduit is provided with bubbling bubble-cap.
7. multistage filtering tower according to claim 2, it is characterised in that the slurry pool is connected with to be stored in for regulation
The liquid level of slurry adjusting means of slurry level in slurry pool；The liquid level of slurry adjusting means includes level display device and stretched
Enter to the conduit in the slurry pool；The conduit is also associated with water pump.
8. multistage filtering tower according to claim 6, it is characterised in that the clear water segregation section is connected with described for adjusting
The clear water liquid level regulation device of clear water water level in clear water segregation section；The clear water liquid level regulation device includes separating with the clear water
The U-tube of section connection, and the water pump being connected with the U-tube.
9. a kind of desulfation dust-extraction device, it is characterised in that including demister and according to any one institute of claim 1~8
The multistage filtering tower stated, the demister is connected with described multistage filtering tower one end.
10. desulfation dust-extraction device according to claim 9, it is characterised in that the demister includes the 3rd fume pipe
Road and demister；The two ends of 3rd flue are also connected with the clear water segregation section, the demister respectively；Described
Direction of the volume of three flues along the clear water segregation section to the slurries segregation section gradually increases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621331077.8U CN206414968U (en) | 2016-12-06 | 2016-12-06 | A kind of multistage filtering tower and its desulfation dust-extraction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621331077.8U CN206414968U (en) | 2016-12-06 | 2016-12-06 | A kind of multistage filtering tower and its desulfation dust-extraction device |
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| Publication Number | Publication Date |
|---|---|
| CN206414968U true CN206414968U (en) | 2017-08-18 |
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ID=59576462
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| CN201621331077.8U Active CN206414968U (en) | 2016-12-06 | 2016-12-06 | A kind of multistage filtering tower and its desulfation dust-extraction device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020164413A1 (en) * | 2019-02-12 | 2020-08-20 | 源洁科技股份有限公司 | Fossil fuel pollutant prevention system |
-
2016
- 2016-12-06 CN CN201621331077.8U patent/CN206414968U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020164413A1 (en) * | 2019-02-12 | 2020-08-20 | 源洁科技股份有限公司 | Fossil fuel pollutant prevention system |
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