CN203736987U - Flexible fiber spinning line demister - Google Patents
Flexible fiber spinning line demister Download PDFInfo
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- CN203736987U CN203736987U CN201320783148.8U CN201320783148U CN203736987U CN 203736987 U CN203736987 U CN 203736987U CN 201320783148 U CN201320783148 U CN 201320783148U CN 203736987 U CN203736987 U CN 203736987U
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- flexible fiber
- demister
- spin line
- fiber spin
- warp
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Abstract
The utility model relates to a flexible fiber spinning line demister, which is used for solving the problems that the demisting efficiency of an existing demister is low, a filtering type demister is easy to block, and an electrostatic demister is high in cost and large in occupation area and has corrosion and scale formation problems. According to the technical scheme, the flexible fiber spinning line demister comprises an exhaust funnel provided with an air inlet, an air outlet and a liquid discharge pipe, wherein a motor is arranged on the vertical center line of the upper segment of the exhaust funnel, a rotating shaft of the motor is sleeved with a shaft sleeve, at least one layer of disks is arranged along the axial line direction of the shaft sleeve, a flexible fiber spinning line is arranged on each disk, the flexible fiber spinning line comprises a plurality of longitude lines, one ends of the plurality of longitude lines are uniformly connected to the disks, and the other ends of the plurality of longitude lines are free ends. The flexible fiber spinning line demister provided by the utility model is low in resistance, high in efficiency, free of occupation area, free of corrosion, free of scale formation and blockage, high in flue gas treatment capacity, simple in structure, light in weight, low in energy consumption and low in cost.
Description
Technical field
The utility model relates to a kind of for the demister containing fog stream, a kind of flexible fiber spin line demister specifically.
Background technology
Demister is the key equipment in wet dedusting, flue gas desulfurization and denitrification system.Common demister has inertia demister, centrifugal type demister, filtering type demister, electrostatic precipitator.
Deflection plate demister is typical inertia-type demister (Dong Yiren, Sun Fengzhen. tower demist technology. Chemical Manufacture and technology .2000,7 (2): 6-11), flow containing fog that bending between deflection plate is mobile makes droplet and deflection plate bump and be captured.The resistance of deflection plate demister is low, but demist efficiency is very low, is conventionally no more than 60%.
Centrifugal type demister mainly contains rotational flow plate defroster, cyclone demister, rotation demister.
Rotational flow plate defroster is made up of several blades that tilt by certain angle of a circle, in the time that passing impeller clearance, band liquid air-flow can produce swirling eddy, the drop of carrying secretly in air-flow is thrown toward outside under the effect of centrifugal force, thereby collide and be attached on wall, finally because self gravitation is flowed to (Yao Kai, Li Liang, Hou Zhongming in collecting tank, Wang Youjun. the conventional demist state of the art and development trend. developing electro-mechanic product and innovation .2008,21 (3): 34-38.).Rotational flow plate defroster is higher than the demist efficiency of deflection plate demister, but because spiral board is static, resistance is higher, increases with exhaust gas volumn, and blade radius increases, and efficiency declines rapidly, substantially superseded at present.
Cyclone demister is that air-flow tangentially enters cylindrical shell, forms swirling eddy, makes droplet centrifugation be deposited to barrel and traps water smoke.Its demist efficiency is higher, but resistance is larger, conventionally exceedes 1000Pa.And be not suitable for processing large exhaust gas volumn.
For improving the efficiency of centrifugal demister, Yin little Lin proposes a kind of rotation demister (can synchronous flue gas desulfurization rotary dust separation defroster, ZL200820053167.3).Method is that demist dish is installed in air duct, and demist dish is made up of metal thread bar, drives demist dish to rotate by motor, and centrifugal force gets rid of the droplet that is attached on silk rod surface to air duct limit wall.This demister can improve demist efficiency, but in the time of demist dish High Rotation Speed, the droplet that is attached to silk rod surface easily comes off, and drop can be smashed simultaneously, forms thinner droplet, has limited the further raising except fog effect.In addition, in the time processing large exhaust gas volumn, demist dish size is large, and weight increases, and not only energy consumption increases, and the reliability of demister reduces.
Subsequently, east, He Mingli propose " a kind of Self-spinning type impeller defogger (ZL200920087980.8) " towards dawn.Rotary blade is directly installed in pipeline, not demand motive motor.Rotating freely containing the lower blade that blows of fog stream, resistance significantly declines, and demist efficiency is higher than rotational flow plate defroster.If multiple impeller demisters in parallel, can process large exhaust gas volumn in pipeline.The advantage of this demister is energy-conservation, but impeller is passive rotation, and demist efficiency is limited.
Filtering type demister comprises mesh mist eliminator and fiber mist eliminator (Hang Desen, Zhang Chengkun. the exploitation of new type of fibre mist eliminator and application. sulfuric acid industry .2007 (2): 37-40) demist efficiency higher, but in the time processing containing fog dust gas, easily stop up, be only suitable for the not aerosol containing particle and separate.
Electrostatic precipitator is a kind of demister that current demist is most effective, resistance is less, flue gas treating capacity is large.Its cost is high, floor space is large.Up to the present, still do not obtain fine solution about the corrosion and scaling problem of electrostatic precipitator.
In sum, the subject matter that existing demist technology exists is: the demist efficiency of inertia demister and centrifugal demister is low, and filtering type demister easily stops up, and electrostatic precipitator cost is high, floor space large, have corrosion and scaling problem.
Summary of the invention
The purpose of this utility model is in order to solve the problems of the technologies described above, provide that a kind of resistance is low, efficiency is high, without floor space, corrosion-free, without fouling obstruction, flue gas treating capacity is large, simple in structure, lightweight, energy consumption is little, cost is low flexible fiber spin line demister.
Technical scheme comprises motor and rotating shaft thereof, in the rotating shaft of described motor, cover has axle sleeve, axis direction along axle sleeve is at least provided with one deck disk, described disk is provided with flexible fiber spin line, described flexible fiber spin line includes many warps, one end of described many warps is evenly connected on disk, and the other end is free end.
Described warp length be that described free end can contact with the tube wall of pipeline in the time of High Rotation Speed.
Described flexible fiber spin line also comprises many parallels that are positioned on described warp.
Described outmost turns parallel is 100～500mm from the free end of described warp, and the spacing of adjacent two parallels is 500～1000mm.
On described every one deck disk, be furnished with the warp of 30-300 root fibrous material.
In the time that described pipe diameter is 500～1000mm, the warp on every layer of disk is 30～60; In the time that the diameter of described pipeline is greater than 1000mm, the warp on every layer of disk is 60～300.
The material of described flexible fiber spin line is corrosion-resistant synthetic fibers.
The diameter of described warp and parallel is 2～20mm.
Described motor is positioned at closed chamber and is fixed on brace summer, and the rotating shaft of described motor is set with axle sleeve through after brace summer, and described closed chamber is in communication with the outside through conduit.
The bearing block of described rotating shaft is fixed on brace summer, and is sealed by the end cover being connected with brace summer.
Installation of the present utility model is the same with existing demister, is arranged in the pipeline that need to carry out demist operation carrying out gas-liquid separation containing fog stream, and described pipeline is the pipeline that passes into containing fog stream, and as aiutage etc., described pipeline can be straight tube or reducer pipe etc.When installation, the utility model device is vertically mounted on the position of center line of described pipeline.
In the utility model, when motor does not start, disk is static, the flexible fiber spin line that is fixed on disk under Gravitative Loads in naturally drooping state.After electric motor starting, the rotating shaft of motor is rotated, warp beam sleeve drives disk High Rotation Speed together, the flexible fiber spin line that the rotation of disk makes originally to naturally droop is also umbrella and opens in High Rotation Speed under centrifugal action, when enter in pipeline containing fog stream during by " the flexible fiber spin line of High Rotation Speed " (abbreviation spin line), again along tangent line upwards, the speed of related movement of droplet and spin line is up to the even hundreds of rice of tens of rice, and its strong inertial collision effect makes droplet very easily strike in spin line and be captured.Meanwhile, near the fog that contains spin line also can make flows High Rotation Speed, and the centrifugal force that the utility model demister swirling eddy produces is than common centrifugal type demister more than high hundred times, and centrifugal demist effect is remarkable.Spin line also can produce strong turbulent diffusion effect, makes very thin droplet be attached to spin line surface and is captured.And because flexible fiber spin line is the good water absorption of single material, its capillarity makes the drop that is attached to spin line surface can infiltrate spin line inside, the problem of having avoided drop to come off from spin line surface second.Finally, under centrifugal action, the droplet being captured finally gets rid of to dirty along wall after tube wall through the free end of warp along spin line, has realized containing the high efficient gas and liquid of fog stream and having separated.
The described object that parallel is set is for the warp being fixed on disk is coupled together by many parallel parallels, prevents that warp is mutually wound around in the time of High Rotation Speed, and impact is except fog effect.Outmost turns parallel is from warp end 100～500mm, and to ensure the stretching degree of High Rotation Speed of warp, the spacing between adjacent two parallels is 500～1000mm, resistance, the weight reduction passed through to reduce air-flow.If aiutage diameter is less than 1000mm, the possibility being mutually wound around between warp is little, can cancel as required the setting of parallel.The Gating Area shared due to every layer of flexible fiber spin line is very little, and the long-pending ratio of the spin line projected area of opening and conduit section is very little, Gating Area be no more than conduit section long-pending 2%, the pressure loss that therefore flexible fiber spin line causes is very low.
Further, demist efficiency is relevant with the quantity of warp, and in the situation that motor speed is certain, warp is thinner, layout is closeer, and demist efficiency is higher, but warp is arranged get Tai Mi, and resistance can improve.In order to take into account efficiency and resistance, in the time that pipe diameter is less than 500～1000mm, 30～60 of warps are preferably set on same disk.In the time that pipe diameter is greater than 1000mm, it is 60～300 that warp is preferably set on same disk.
The design of the length of described warp can contact with the wall of pipeline when the High Rotation Speed with the free end of warp as well.Because warp is flexible composite fibre materials, can not cause wearing and tearing to tube wall, so, the installation accuracy of the flexible fiber spin line on disk is not had to excessive demand.The benefit that the end (free end) of warp contacts with tube wall is: the one, can realize all standing of spin line to pipeline flow section, and avoid water smoke to escape near tube wall; The 2nd, the water droplet that is thrown to tube wall can become current immediately free-ended the stroking under sweeping of warp, flows down along tube wall.
For improving demist efficiency, flexible fiber spin line can be designed to multilayer (to there being multi-layer discs), if but the number of plies is too much, and the pressure loss increases.In addition, although flexible fiber spin line is very light, if the number of plies is too much, and be moist single, weight can significantly increase.So the number of plies of flexible fiber spin line should not exceed 5 layers.Preferably 50～500mm of the diameter of described disk.
Owing to adopting motor to drive, another effective ways that therefore improve demist efficiency are to improve motor speed, can adopt variable-frequency motor to adjust easily according to actual needs rotating speed, realize the efficient trapping to droplet.
For the etching problem that reply exists containing fog dust gas, except motor adopts the form and flue gas isolation of sealing, all parts have also all been considered anticorrosive property.Can use existing various synthetic fibers as the material of flexible fiber spin line, particularly there are the synthetic fibers (as polytetrafluoroethylene fibre) of corrosion-resistant effect, thread synthetic fibers are knitted or woven into corresponding wire, and the diameter of its warp and parallel is preferably 2～10mm.Disk, motor shaft sleeve, end cover are stainless steel, and the closed chamber of motor, conduit are polytetrafluoroethylene (PTFE), and aiutage inwall can anticorrosion with painting coating, or be anti-corrosion material liner.Brace summer is stainless steel.
When installation, conduit, for closed chamber is connected with extraneous, makes the current supply line admittance pipe of motor pass tube wall.The effect of described conduit reaches the protection to current supply line on the one hand, and on the other hand, because conduit is in communication with the outside, the heat bulk storage that therefore motor rotation can be produced, in atmosphere, reaches the object of heat radiation.
In sum, the utility model has the advantage of:
1, the utility model adopts the flexible fiber spin line demist of High Rotation Speed, takes full advantage of the complex effect of inertial collision, centrifugation, turbulent diffusion, four kinds of dominant mechanisms of fiber capillarity, and demist efficiency is high.
2, main choked flow member of the present utility model is flexible fiber spin line, motor and rotating shaft, and Gating Area is no more than 2% of the pipeline gross area, so simple in structure, lightweight, cost is low, resistance is little, power consumption is few.
3, the distance between centers of tracks of flexible fiber spin line is large, and in addition under airflow function, spin line produces vibration and plastic deformation, thereby has avoided the fouling clogging causing when having particle in fog dust gas.
4, the utility model device can be arranged in the pipeline of straight tube or reducer pipe structure, flexible for installation, without floor space.By changing quantity, the number of plies and the rotation speed of fan of flexible fiber spin line, can effectively improve demist efficiency.Therefore have that fitting operation is easy, fog removal performance good, anticorrosion, practical feature, be applicable to, to all kinds of gas-liquid separations containing fog stream, can efficiently trap fine water-spray and grit, be widely used in the fields such as demist, clarifying smoke, desulphurization denitration.
Brief description of the drawings
Fig. 1 is the mounting structure schematic diagram of the utility model embodiment 1.
Fig. 2 is the structural representation of the utility model embodiment 2.
Wherein, 1-warp, 2-disk, 3-axle sleeve, 4-motor, 5-closed chamber, 6-aiutage, 6.1-gas outlet, 6.2-air inlet, 6.3-discharging tube, 7-conduit, 8-brace summer, 9-bearing, 10-end cover, 11-rotating shaft, 12-parallel, 13-water tank.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further explained to explanation:
In embodiment 1, the flexible fiber spin line being arranged in the flexible fiber spin line demister on aiutage 6 vertical center lines is individual layer, its structure as shown in Figure 1: comprise warp 1, disk 2, motor shaft sleeve 3, motor 4, closed chamber 5, plastic catheter 7, brace summer 8, bearing 9, end cover 10, motor shaft 11 and parallel 12.
Wherein, aiutage 6 tops are provided with gas outlet 6.1; hypomere is provided with air inlet 6.2, bottom is provided with water tank 13; described water tank 13 is communicated with discharging tube 6.3; the vertical center line of described aiutage 6 epimeres is provided with the motor 4 that is positioned at closed chamber 5; closed chamber 5 is in communication with the outside through the barrel of aiutage 6 through conduit 7; the current supply line of motor 4 can be passed outside expelling tube 6 in conduit 7; arranging of conduit 7 reaches the protection to current supply line on the one hand; on the other hand; also motor 4 can be turned round produce heat bulk storage in atmosphere, reach the object of heat radiation.Described motor 4 is fixed on through brace summer 8 on the inwall of aiutage 6, and through brace summer 8 vertically downward, its bearing 9 also can seal by the end cover 10 being fixed on brace summer 8 in the rotating shaft 11 of motor 4, makes bearing 9 also with containing fog stream isolate to reduce corrosion.In described rotating shaft 11, cover has axle sleeve 3, it is 50～500mm disk 2 that described axle sleeve 3 is provided with diameter, disk 2 is provided with flexible fiber spin line, described flexible fiber spin line comprises many warps 1 and the Duo Gen parallel 12 of intersection, described warp 1 one end is connected with disk 2, the other end is free end, described parallel 11 laterally connects many warps 1, and parallel 12 Main Functions are to prevent that warp 1 is wound around mutually when rotated.Outmost turns parallel 12 from warp 1 place by holding 100～500mm, the spacing 500～1000mm between adjacent two parallels 12.If aiutage 6 diameters are less than 1000mm, the possibility being mutually wound around between warp 1 is very little, can consider to cancel parallel.The length control of described warp 1 is: in the time of warp 1 High Rotation Speed, its free end can contact with the barrel of aiutage 6 or be slightly long for well, because fiber spin line is flexible, can not cause wearing and tearing to barrel.And the benefit that the free end of warp 1 is contacted with tube wall is: the one, can realize all standing of spin line (the flexible fiber spin line of High Rotation Speed) to aiutage flow section, avoid water smoke to escape near barrel; The 2nd, the water droplet that is thrown to barrel can become current immediately free-ended the stroking under sweeping of warp 1, flows down along tube wall; The 3rd, can under centrifugal action, get rid of to the water droplet of wall and play guide effect part, while avoiding water droplet to pound wall at a high speed, drop is the broken less droplet of formation that spills again.
The thickness of described warp 1 and parallel 12 does not have particular/special requirement, preferably diameter is at 2～20mm, its material is corrosion-resistant synthetic fibers, in the present embodiment, adopt polytetrafluoroethylene fibre, because synthetic fibers are originally as thread, can work out as required or be woven into needs the line of diameter to form warp or parallel, and for easy to process, the diameter of warp 1 and parallel 12 can be identical.
Demist efficiency is relevant with the radical of warp 1.At motor 4 rotating speeds certain in the situation that, warp 1 diameter is thinner, it is closeer to arrange, demist efficiency is higher, warp 1 is arranged too close, and resistance can improve, in order to take into account efficiency and resistance, in the time that aiutage 6 diameters are less than 500～1000mm, preferably 30～60 of the warps 1 on same disk 2.In the time that aiutage 6 diameters are greater than 1000mm, same disk 2 warps 1 are preferably 60～300.
For preventing containing the corrosion of fog dust gas to flexible fiber spin line demister, except motor 4, all parts have all been considered anticorrosive property, disk 2, motor shaft sleeve 3, end cover 10 and brace summer 8 are stainless steel, motor seal chamber 5, conduit 7 are polytetrafluoroethylmaterial material, aiutage 6 inner-wall spraying anticorrosive paints or covering anti-corrosion material liner.
Operation principle:
When motor 4 does not start, motor shaft sleeve 3 and disk 2 are static, be fixed on flexible fiber spin line on disk 2 under Gravitative Loads in naturally drooping state.After motor 4 starts, the rotating shaft 11 of motor is rotated, drive motor axle sleeve 3 rotates together with disk 2, and the flexible fiber spin line that the rotation of disk 2 makes originally to naturally droop is umbrella under centrifugal action opens, and the free end of warp 1 can contact with the Inner wall of aiutage 6.Enter the interior rear rising of aiutage 6 containing fog stream by air inlet 6.2, while passing through the flexible fiber spin line (hereinafter to be referred as spin line) of High Rotation Speed when rising containing fog stream, in tangential direction, the speed of related movement of droplet and spin line is up to tens of rice to hundreds of rice, and its inertial collision effect is higher tens times than common inertia demister.So the droplet in air-flow more easily strikes in spin line and is captured, consequently inertia demist efficiency significantly promotes.Simultaneously, near the fog dust gas that the contains single of High Rotation Speed makes has also produced rotatablely moving at a high speed, flow rotation speed approaches spin line speed, square being directly proportional of centrifugal force and the rotary speed producing due to swirling eddy, so the centrifugal force that the utility model produces is than the high hundreds of times of common centrifugal type demister.Certainly, the high velocity impact of spin line and drop, likely smashes drop and form thinner water smoke, but fibrage line has water sorption (capillarity), bump against the drop energy infiltrated fiber line inside on fibrage line surface, avoided drop to come off from the single surface second of High Rotation Speed.In addition, the turbulence diffusion that spin line produces is huge, and this turbulent diffusion effect is very beneficial for very thin mist vapour and is attached to spin line surface and is captured.Liquid in spin line gets rid of to the internal face of aiutage 6 under centrifugal action after spin line flows to the free end of warp 2, then slide and flow in the water tank 13 of bottom along barrel, discharged by discharging tube 6.3, finally realized the gas-liquid separation containing fog stream, demist air-flow continues to rise through spin line and is discharged by the gas outlet 6.1 at top.
Embodiment 2
The number of plies of flexible fiber spin line can be designed to multilayer, and while exceeding 5 layers, the pressure loss increases obviously, although and flexible fiber spin line very light, if but the number of plies is too much, and be moist single, weight is increase significantly.Therefore flexible fiber spin line is preferably 1-5 layer, the corresponding one deck flexible fiber spin line of installing of one deck disk 2.
In addition, in the time that aiutage 6 is straight tube, the warp in layer flexible fiber spin line is can length identical, in the time that aiutage 6 is reducer pipe, the warp in the flexible fiber spin line of correspondence position can or dwindle and corresponding growth or shortening with the increase of barrel dliameter, the control of its length is still with " when warp 1 High Rotation Speed, its free end can contact with the barrel of aiutage 6 or be slightly long for well "
In the present embodiment, as shown in Figure 2, described aiutage 6 is reducer pipe, and flexible fiber spin line is two-layer, and all the other are with embodiment 1.
Except fog effect experiment
The flexible fiber spin line demister of being made up of such scheme, is 2.06m/s at wind speed, when rotary speed is 1500rpm, and pressure loss 150Pa, drop meso-position radius is under the experiment condition of 30 μ m, and the average efficiency of three demist experiment measurings is 96.95%.
Claims (10)
1. a flexible fiber spin line demister, comprise motor and rotating shaft thereof, it is characterized in that, in the rotating shaft of described motor, cover has axle sleeve, axis direction along axle sleeve is at least provided with one deck disk, and described disk is provided with flexible fiber spin line, and described flexible fiber spin line includes many warps, one end of described many warps is evenly connected on disk, and the other end is free end.
2. flexible fiber spin line demister as claimed in claim 1, is characterized in that, described warp length be that described free end can contact with the tube wall of pipeline in the time of High Rotation Speed.
3. flexible fiber spin line demister as claimed in claim 1, is characterized in that, described flexible fiber spin line also comprises many parallels that are positioned on described warp.
4. flexible fiber spin line demister as claimed in claim 3, is characterized in that, parallel is 100～500mm from the free end of described warp described in outmost turns, and the spacing of adjacent two parallels is 500～1000mm.
5. flexible fiber spin line demister as claimed in claim 1, is characterized in that, is furnished with the warp of 30-300 root fibrous material on described every one deck disk.
6. flexible fiber spin line demister as claimed in claim 5, is characterized in that, in the time that pipe diameter is 500～1000mm, the warp on every layer of disk is 30～60; In the time that the diameter of pipeline is greater than 1000mm, the warp on every layer of disk is 60～300.
7. flexible fiber spin line demister as claimed in claim 1, is characterized in that, the material of described flexible fiber spin line is corrosion-resistant synthetic fibers.
8. flexible fiber spin line demister as claimed in claim 3, is characterized in that, the diameter of described warp and parallel is 2～20mm.
9. flexible fiber spin line demister as described in claim 1-8 any one, is characterized in that, described motor is positioned at closed chamber and is fixed on brace summer, and the rotating shaft of described motor is set with axle sleeve through after brace summer, and described closed chamber is in communication with the outside through conduit.
10. flexible fiber spin line demister as claimed in claim 9, is characterized in that, the bearing block of described rotating shaft is fixed on brace summer, and is sealed by the end cover being connected with brace summer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320783148.8U CN203736987U (en) | 2013-12-02 | 2013-12-02 | Flexible fiber spinning line demister |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320783148.8U CN203736987U (en) | 2013-12-02 | 2013-12-02 | Flexible fiber spinning line demister |
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| Publication Number | Publication Date |
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| CN203736987U true CN203736987U (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320783148.8U Withdrawn - After Issue CN203736987U (en) | 2013-12-02 | 2013-12-02 | Flexible fiber spinning line demister |
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| CN (1) | CN203736987U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103657266A (en) * | 2013-12-02 | 2014-03-26 | 江汉大学 | Flexible fiber spiral line demisting device |
-
2013
- 2013-12-02 CN CN201320783148.8U patent/CN203736987U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103657266A (en) * | 2013-12-02 | 2014-03-26 | 江汉大学 | Flexible fiber spiral line demisting device |
| CN103657266B (en) * | 2013-12-02 | 2015-12-02 | 江汉大学 | Flexible fiber spin line demister |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140730 Effective date of abandoning: 20151202 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |