CN102574131B - Electrostatic filter - Google Patents
Electrostatic filter Download PDFInfo
- Publication number
- CN102574131B CN102574131B CN201080032160.4A CN201080032160A CN102574131B CN 102574131 B CN102574131 B CN 102574131B CN 201080032160 A CN201080032160 A CN 201080032160A CN 102574131 B CN102574131 B CN 102574131B
- Authority
- CN
- China
- Prior art keywords
- plate
- electrofilter
- minute
- reinforcing ring
- deposition
- 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.)
- Expired - Fee Related
Links
- 230000008021 deposition Effects 0.000 claims description 28
- 230000003014 reinforcing effect Effects 0.000 claims description 21
- 230000008093 supporting effect Effects 0.000 claims description 15
- 238000005192 partition Methods 0.000 claims description 8
- 239000000725 suspension Substances 0.000 claims description 5
- 239000000428 dust Substances 0.000 abstract description 11
- 238000001556 precipitation Methods 0.000 abstract 3
- 238000000151 deposition Methods 0.000 description 22
- 239000007789 gas Substances 0.000 description 13
- 238000012423 maintenance Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000005474 detonation Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 241001288229 Banchus Species 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/04—Plant or installations having external electricity supply dry type
- B03C3/08—Plant or installations having external electricity supply dry type characterised by presence of stationary flat electrodes arranged with their flat surfaces parallel to the gas stream
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/45—Collecting-electrodes
- B03C3/49—Collecting-electrodes tubular
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/86—Electrode-carrying means
Landscapes
- Electrostatic Separation (AREA)
Abstract
The invention relates to an electrostatic filter, comprising a housing having a portion that has an at least approximately circular cross-section for conducting through a particle-carrying gas flow in a longitudinal direction L perpendicular to the cross-section. In the housing, a plurality of precipitation plates (3) are disposed, which are oriented in parallel to one another forming channels extending in the longitudinal direction L, wherein the precipitation plates (3) can be struck by at least one rapping bar (8) for the purpose of dust removal. At least some of the precipitation plates (3) are designed as pairs of plates, each pair comprising an upper, suspended sub-plate (3a) and a lower, vertically mounted sub-plate (3b).
Description
Technical field
The present invention relates to a kind of according to the electrofilter of the preamble of claim 1 (Elektrofilter).
Background technology
EP 0 252 371 A1 have described a kind of electrofilter of the form with electrostatic precipitator, and the air-flow that is loaded with therein particulate or dust is directed between parallel deposition plate (Niederschlagsplatte) in the housing intercept of cylindricality roughly.Between the deposition plate being orientated abreast, there is the passage extending in the vertical, be furnished with therein the jetelectrode (Spruehelektrode) being stretched in framework.
File DE 29 22 224 A1 have described a kind of for gas purification being included in to the drum-type electro filter of suspended particulate wherein.At this, the arranged in form with Archimedian screw in housing has deposition-belt electrode and injection-belt electrode, and it is correspondingly reeled around base (Fassung).At this, the base of corresponding electrode rotates 180 ° mutually.Two electrodes have common coiling center.
File FR 2 363 373 A1 have described a kind of horizontally disposed filter plant, are configured for the electric filter of Purge gas, and gas to be clean is guided through via it container that is furnished with at intervals therein electrode.Electrode system consists of the framework on top and the framework of bottom, and it is connected to each other by means of carrying bolt (Stehbolzen).In order to obtain the constant spacing between adjacent electrode, the end of electrode is directed in comb shape portion.For dedusting, electrode utilizes suitable shaking device to move, and wherein, dust departs from from the surface of electrode.
File DE 29 49 722 A1 have described a kind of jetelectrode region, it is for the HTHP electrofilter with at cross section being circular housing, and it upwards settles and be provided with at least one region depositing electrode tabular, that arrange vertically and that roughly extend at whole gas flow cross section with respect to horizontal line with the angle of 50 to 70 °.
Summary of the invention
The object of the invention is to illustrate a kind of electrofilter, it has higher operational reliability and efficiency under simple manufacturability.
For previous mentioned electrofilter, this object utilizes the feature of the characteristic of claim 1 to realize according to the present invention.By deposition plate being divided into minute plate top, supporting in suspension and minute plate bottom, that be erected to supporting, obtain the possibility of the supporting flexibly of ejecting plate and the improvement of dedusting.
With detailed form of implementation, be associated with therewith different advantages as requested.Avoided on the one hand destroy (Ausschlagen) of plate supporting, as it is for example from occurring owing to knocking for the plate of tightening regularly prior art.In addition, avoided the problem of the mechanical tension of plate that tighten regularly or continuous, as it is due to thermal expansion occurs.This cause service life of improving and for example with the more constant spacing that guides the electrode of voltage.
In addition the present invention allows to ratio as designed more simply the mechanical device knocking in the situation of the plate tightening regularly.Especially it can be enough in an only end in plate region, being provided with an only axle (Klopfwelle) that knocks with hammer.
According to the dedusting of the preferred main application fields converter gas (Konvertergas) of electrofilter of the present invention.Due to the mode of operation of the interruption of converter, the surrounding air that is loaded with converter gas dust, flammable and only slightly contains dust alternately flows through gas purifying equipment.During the blowing stage of converter, the flammable converter gas of generation is collected in gas tank after dust separation.Being arranged on filter commutation station (Umschaltstation) afterwards can redirect in atmosphere via chimney non-flammable waste gas.If converter gas mixes with the oxygen containing waste gas that blowing stops, can produce detonable admixture of gas, it can catch fire and cause detonation in electrofilter.Such detonation can cause dust to impact (Staubstoss), the separating power of its infringement electrofilter.In addition, it disturbs the operation of converter, because it can cause the interruption of converting process.Therefore, electrofilter according to the present invention is particularly suitable for this application with the summation of its feature, adds round hull shape and makes particularly advantageous flowing through become possibility with the good mechanical strength of whole electrofilter of while.
In a particularly preferred form of implementation of the present invention, each in the right minute plate of plate self neatly, especially can arrange quiveringly.Can realize thus especially effectively the knocking of Fen Banchu, wherein, especially realize beaing that corresponding end regions freely (upper end of the lower end of minute plate hanging and minute plate of setting) at minute plate locates.
In order to construct in a preferred manner and to beat all as far as possible deposition plates by means of simple design, the boundary in preferred detailed design scheme of the present invention between minute plate corresponding top and bottom is roughly extended on half height at housing.Conventionally preferably, be also included in thus transversely at the plate of edge side, its housing cross section due to circle is the shortest plate.
In a suitable form of implementation, by the deposition plate forming with minute plate bottom top, be always configured to wooden partition, its bar that knocks by means of only one-sided driving beats.Can cancel thus the expensive mechanical device beaing for both sides, as it is for example from known for enough effectively knocking prior art undivided and deposition plate that tighten regularly.
Conventionally advantageously, by the deposition plate forming with minute plate bottom top, be guided through and knock bar, make to knock bar and not only cause reliable orientation or the maintenance of beaing but also causing at least in part plate.
Conventionally advantageously, in housing, be one after the other furnished with in the vertical reinforcing ring, wherein, between two reinforcing rings, be furnished with the region of deposition plate.Such region for example can consist of a plurality of wooden partitions parallel to each other, and wooden partition is correspondingly parallel to the short transverse of housing and machine-direction oriented and correspondingly consist of the deposition plate of a plurality of arranged in succession in the vertical or a paired minute plate.By such reinforcing ring, housing significantly more resistance to compression ground and static state is more stably constructed, and wherein, for the element of the carrying of deposition plate and/or electrode frame, can be contained in reinforcing ring place.
At this, at least one the non-rotating structure symmetrically in a preferred improvement project in reinforcing ring.Especially can be regarded as in this respect, reinforcing ring has the intercept of the obvious length of at least two remarkable different shape of cross sections on its circumference.
Particularly preferably, at this, in the intercept of the bottom of reinforcing ring, accommodate for holding the bracing frame of minute plate bottom, that be erected to supporting.
In addition preferably, the intercept of the bottom of reinforcing ring has the cross-sectional profiles (Querschnittsprofil) with respect to the intercept weakening on top.For example can provide enough spaces thus, to will be bearing in the intercept place of bottom for being erected to the bracing frame of minute plate of supporting, and significantly do not reduce housing pass through freely cross section.
In another preferred form of implementation, reinforcing ring has tie-rod (Zuganker), and wherein, tie-rod is arranged in the region of diameter of level in preferred detailed design scheme.Particularly preferably, tie-rod is configured to lattice frame (Gitterrahmen) for lighter version.Tie-rod advantageously can be configured to transitable (begehbar) aisle (Laufsteg) conventionally, and it makes the easy maintenance of deposition plate approach and become possibility.
Additional advantage of the present invention and feature are from described embodiment next and draw from dependent claims.
Accompanying drawing explanation
Next preferred embodiment of the present invention is described and is described further with reference to the accompanying drawings.
Fig. 1 shown according to the three-dimensional view in the region of the deposition plate of electrofilter of the present invention,
Fig. 2 has shown the three-dimensional view of four reinforcing rings of electrofilter.
concrete form of implementation
Electrofilter according to the present invention comprises housing (not shown); it has cross section constant and circular in the intercept of cylindricality; wherein; longitudinal L of electrofilter extends upward in the side of column axis, also realizes electrofilter and makes progress to the party to be loaded with the gas flow warp of particulate or dust.
In the housing intercept of cylindricality, be provided with the reinforcing ring 1 of four each intervals on longitudinal L, its support housing and on the other hand fixing for the region 2 of deposition plate 3 on the one hand.
Such region 2 is shown in Figure 1.It comprises a plurality of wooden partitions 4 parallel to each other, that correspondingly extend on longitudinal L and short transverse H, and wooden partition 4 correspondingly consists of a plurality of deposition plates 3 of arranging successively on longitudinal L.Between wooden partition 4, be extended with the passage for gas guiding, be furnished with therein (unshowned) electrode frame.
Deposition plate 3 correspondingly comprises minute plate 3a on top and minute plate 3b of bottom.Minute plate 3a on top is supporting in suspension correspondingly, that is to say support bar 5 places on the top of corresponding wooden partition 4.Support bar 5 slightly protrudes from region 2 and is bearing in corresponding accommodation section 6 at the intercept 1a place on the top of support ring 1 distolateral.
A minute plate 3b for bottom is received or is erected to be bearing in the bracing frame 7 of bottom.The bracing frame 7 of bottom comprises distolateral, crooked segmental arc 7a and between it and rib joint (Rippenglied) 7b that L extends along the longitudinal, holds minute plate 3b of bottom at Qi Chu.
The deposition plate 3 separating in the middle of can being understood to generally with minute plate 3a, 3b top bottom, wherein, two minute plate corresponding vibration ground and supporting neatly.Segmentation plane is extended greatly on half height of deposition plate or electrofilter.By structure type, determine ground, minute plate 3a, the 3b in edge side on width B or deposition plate 3 are constructed shortlyer than what extend in maximum internal height freely in the middle of being arranged on width, at electrofilter.
In the region of middle segmentation plane, be provided with by a plurality of and knock the assembly that bar 8 forms, its each region 2 is longitudinally being beaten on L by an independent mechanical device (not shown) that beats only.At this, the bar 8 that knocks in region 2 interconnects by cross bar 9.Each independent minute plate 3a, 3b correspondingly beat between piece 8a in knocking two of bar 8, make minute plate that supports movably after beaing by first at direction upper deflecting and then beat to second.Obtain thus collected dust from the effective abate of deposition plate.Meanwhile, knock the guide part that bar 8 is minute plate 3a, 3b for supporting movably.
Knocking the fixing of bar realizes as requested like this:
A) correspondingly by the bolt (not shown) of the lower end that divides plate two supportings in suspension, or
B) correspondingly by the swinging joint (not shown) with the supporting construction in each end.
Two kinds to hang types known by the electrofilter of rectangular configuration in a similar fashion, wherein, do not exist herein deposition plate cut apart and continuous, only the plate of supporting is beaten at its lower end in suspension.
The segmental arc 7a of the bracing frame 7 of bottom is contained in the intercept 1b place of the bottom of reinforcing ring 1, and the intercept of this bottom is had to the cross-sectional profiles with respect to the intercept 1a weakening on top.In concrete example, the intercept 1a on top has the profile cross section of rectangle and the intercept 1b of bottom has the cross section of T shape.
Due to the different cross-sectional profiles of intercept 1a, the 1b of support ring 1, its non-rotating structure symmetrically.The intercept of bottom extends being slightly less than in half of circumference of support ring.In addition, side direction, vertical pillar 1c from the intercept 1a on top tangent continue, by means of it, can realize the additional support of whole electrofilter.
On half height of reinforcing ring 1, be correspondingly provided with tie-rod 10 greatly, its diameter along the level of reinforcing ring 1 extends.Tie-rod is configured as lattice frame and is configured to aisle, and electrofilter can approach via this tie-rod better for maintenance purpose.
Obviously, have the electrode frame (not shown) of guiding voltage between deposition plate constructed according to the invention, it is constructed in known manner.
Under region, have removing device (not shown), it is constructed equally in known manner, referring to the Fig. 2 in EP 0 253 371 for example.This device can be under bracing frame 7 reciprocally swinging.It should be noted that by design according to the present invention, making to cover larger face by removing device becomes possibility.This allows to the dust emissions of improving, and reduces thus the dangerous of dust impact and improves generally separating power.
Claims (14)
1. an electrofilter, it comprises
Housing, it carries the air-flow of particulate with the intercept of the cross section of sub-circular at least for longitudinal (L) perpendicular to described cross section upper guiding,
Wherein, be furnished with a plurality of deposition plates (3) in described housing, it is in the situation that be formed on described longitudinally (L) upper passage extending and be orientated in parallel with each other, and between described deposition plate, is furnished with the electrode frame that guides voltage,
Wherein, described deposition plate (3) can knock bar (8) by means of at least one for dedusting and beat,
It is characterized in that,
At least some in described deposition plate (3) are configured to the plate pair consisting of minute plate (3a) top, supporting in suspension and minute plate (3b) bottom, that be erected to supporting correspondingly split typely.
2. electrofilter according to claim 1, is characterized in that, each in right described minute of plate plate (3a, 3b) self arranged neatly.
3. according to the electrofilter described in any one in aforementioned claim 1 to 2, it is characterized in that, the boundary between minute plate (3a, 3b) of corresponding upper and lower is roughly extended on half height at described housing.
4. according to the electrofilter described in any one in aforementioned claim 1 to 2, it is characterized in that, by the described deposition plate (3) forming with minute plate (3a, 3b) bottom top, be always configured to wooden partition (4), its bar (8) that knocks by means of only one-sided driving beats.
5. according to the electrofilter described in any one in aforementioned claim 1 to 2, it is characterized in that, by the described deposition plate (3) forming with minute plate (3a, 3b) bottom top, be guided through and knock bar (8).
6. according to the electrofilter described in any one in aforementioned claim 1 to 2, it is characterized in that, in described housing described longitudinally on arranged in succession have reinforcing ring (1), wherein, between two reinforcing rings, be furnished with the region (2) of deposition plate.
7. electrofilter according to claim 6, is characterized in that, at least one the non-rotating structure symmetrically in described reinforcing ring (1).
8. electrofilter according to claim 6, is characterized in that, accommodates for holding the bracing frame (7) of minute plate (3b) described bottom, that be erected to supporting in the intercept of the bottom of described reinforcing ring (1).
9. electrofilter according to claim 6, is characterized in that, the intercept of the bottom of described reinforcing ring (1b) has the cross-sectional profiles that the intercept (1a) with respect to top weakens.
10. electrofilter according to claim 6, is characterized in that, described reinforcing ring (1) has tie-rod (10).
11. electrofilters according to claim 10, is characterized in that, described tie-rod (10) is configured to lattice frame.
12. electrofilters according to claim 10, is characterized in that, described tie-rod (10) is configured to transitable aisle.
13. electrofilters according to claim 1, is characterized in that, each in right described minute of plate plate (3a, 3b) self can be arranged neatly quiveringly.
14. electrofilters according to claim 6, is characterized in that, described reinforcing ring (1) has tie-rod (10), and wherein, described tie-rod (10) is arranged in the region of diameter of level.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009032911.0 | 2009-07-10 | ||
| DE102009032911 | 2009-07-10 | ||
| DE102010021233A DE102010021233A1 (en) | 2009-07-10 | 2010-05-21 | electrostatic precipitator |
| DE102010021233.4 | 2010-05-21 | ||
| PCT/EP2010/004175 WO2011003614A1 (en) | 2009-07-10 | 2010-07-08 | Electrostatic filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102574131A CN102574131A (en) | 2012-07-11 |
| CN102574131B true CN102574131B (en) | 2014-11-26 |
Family
ID=43307962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080032160.4A Expired - Fee Related CN102574131B (en) | 2009-07-10 | 2010-07-08 | Electrostatic filter |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP2451580B1 (en) |
| JP (1) | JP5553896B2 (en) |
| CN (1) | CN102574131B (en) |
| BR (1) | BR112012000611A2 (en) |
| DE (1) | DE102010021233A1 (en) |
| PL (1) | PL2451580T3 (en) |
| TW (1) | TW201102167A (en) |
| WO (1) | WO2011003614A1 (en) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE401327B (en) * | 1976-04-09 | 1978-05-02 | Elfi Elektrofilter Ab | ELECTRIC FILTER FOR AIR TRAINING |
| FR2363373A1 (en) * | 1976-09-07 | 1978-03-31 | Gorno Metall I | Horizontal electrostatic precipitator for sulphur gases - has housing with sets of earthed and negative potential electrodes with decreasing mutual distances |
| JPS55133249U (en) * | 1979-03-14 | 1980-09-20 | ||
| DE2922224A1 (en) * | 1979-05-31 | 1980-12-04 | Vni I Pi Otschistke T Gazov St | Roll type electrical precipitator - with pair of electrodes wound as spirals about common axis |
| DE2949722C2 (en) * | 1979-12-11 | 1984-09-20 | Metallgesellschaft Ag, 6000 Frankfurt | Spray electrode field |
| JPS62130748U (en) * | 1986-02-07 | 1987-08-18 | ||
| DE3622699A1 (en) * | 1986-07-05 | 1988-01-14 | Metallgesellschaft Ag | ELECTROSTATIC DUST SEPARATOR |
| JPS6358653U (en) * | 1986-10-02 | 1988-04-19 | ||
| JPH03115050U (en) * | 1990-03-06 | 1991-11-27 | ||
| DK172419B1 (en) * | 1992-08-28 | 1998-06-08 | Fls Miljoe As | Suspension device and banking mechanism for electrodes in an electro filter |
| US6576046B2 (en) * | 2000-10-19 | 2003-06-10 | Fedders Corporation | Modular electrostatic precipitator system |
-
2010
- 2010-05-21 DE DE102010021233A patent/DE102010021233A1/en not_active Withdrawn
- 2010-07-08 EP EP10741898.0A patent/EP2451580B1/en active Active
- 2010-07-08 PL PL10741898T patent/PL2451580T3/en unknown
- 2010-07-08 JP JP2012518828A patent/JP5553896B2/en not_active Expired - Fee Related
- 2010-07-08 BR BR112012000611-8A patent/BR112012000611A2/en not_active Application Discontinuation
- 2010-07-08 CN CN201080032160.4A patent/CN102574131B/en not_active Expired - Fee Related
- 2010-07-08 WO PCT/EP2010/004175 patent/WO2011003614A1/en active Application Filing
- 2010-07-09 TW TW099122622A patent/TW201102167A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE102010021233A1 (en) | 2011-01-13 |
| PL2451580T3 (en) | 2013-09-30 |
| TW201102167A (en) | 2011-01-16 |
| JP5553896B2 (en) | 2014-07-16 |
| EP2451580B1 (en) | 2013-04-24 |
| WO2011003614A1 (en) | 2011-01-13 |
| JP2012532018A (en) | 2012-12-13 |
| BR112012000611A2 (en) | 2020-11-10 |
| CN102574131A (en) | 2012-07-11 |
| EP2451580A1 (en) | 2012-05-16 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20200708 |