CN201135846Y - Organic waste gas cleaning and recovering device - Google Patents
Organic waste gas cleaning and recovering device Download PDFInfo
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- CN201135846Y CN201135846Y CNU2007201874037U CN200720187403U CN201135846Y CN 201135846 Y CN201135846 Y CN 201135846Y CN U2007201874037 U CNU2007201874037 U CN U2007201874037U CN 200720187403 U CN200720187403 U CN 200720187403U CN 201135846 Y CN201135846 Y CN 201135846Y
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Abstract
The utility model relates to an organic waste gas purification and recovery device, which comprises more than two adsorbers. The adsorbers are connected with a valve and an output pipeline for the waste gas to be treated, and the outlet openings of the adsorbers are connected with a blower fan (3); a condensate pipeline at the bottom of the adsorbers is connected with an inlet opening of a cooler (5), an outlet opening of the cooler is connected with a U-shaped liquid seal pipeline, the outlet opening of the U-shaped liquid seal pipeline is connected with a layered groove (6), the outlet opening of the solvent pipeline of the layered groove is connected with a storage tank (7); the vapor phase material pipeline desorbed at the lower part of the adsorbers is connected with a condenser (4), and the condensing mixed liquor pipeline is connected with the cooler (5); gas pipelines at the upper part of the condenser, the layered groove, and the storage tank are connected to a vacuum pump return circuit in parallel, an outlet opening of a vacuum pump is connected with a main pipeline through which the waste gas flows into the adsorbers; the upper part of the adsorbers is connected with a vapor pipeline; and the device is provided with a pneumatic control system. The organic waste gas purification and recovery device has the advantages that the high concentration organic waste gas can be avoided from passing through the blower fan; and the contamination caused by the system leakage can be avoided. The treatment rate of the device and the quality of the recovery solvent can be enhanced, and the service life of the activated carbon fiber can be prolonged, the use quantity of the water vapor can be saved, the operating cost is reduced, and the pressure of the follow-up water treatment is relieved.
Description
Technical field
The utility model relates to a kind of gas and separates and the purification techniques field, particularly relates to a kind of absorption of exhaust gas active-carbon fiber, retracting device that is used for the environmental protection industry (epi) air contaminant treatment.
Background technology
Along with the extensive use of organic chemical industry's product in industry, the organic pollution that enters in the atmosphere is more and more, mainly is low boiling, volatile organic matter.They are mainly derived from oil industry institute exhaust gas discharged; The organic solvent that all conglomeraties such as printing, pharmacy, automobile, electronics, machinery, shoemaking, leather, synthetic fibers, plastics, papermaking, paint, coating, mining and weaving are discharged, this not only causes the pollution of atmospheric environment, and causes the loss and the waste of resource.
Absorbing process can be divided into by the duty of adsorbent at absorber: fixed bed; Thermopnore; Boiling (fluidisation) bed.Whether can be divided into intermittently adsorption process and continuous adsorption process continuously by operating process.Generally speaking, adopt the suction type of fixed bed more.NACF high-efficiency activated sorbing material of the third generation and environment-friendly engineering material that to be the sixties in 20th century grow up after Powdered, granular active carbon, the former incomparable excellence absorption such as it has that adsorption rate is fast, adsorption capacity is big, regeneration is easy, desorption performance make NACF (ACF) play a part substitute particles and Powdered Activated Carbon in organic exhaust gas is handled.Because the design and the practice of NACF fixed bed, be scarcely out of swaddling-clothes with regard to China, so theoretical parameter lacks, a lot of theoretical parameters and practical operation are all calculated according to the method for charcoal particle fixed bed or by the laboratory data of ACF, so some discrepancy unavoidably.In addition, also have some technological difficulties and certain defective: for example: bed resistance is big, and disposal ability is lower relatively, needs to use high pressure positive blower, the running energy consumption is big, the equipment fluctuation of service, the waste gas purification rate is low, and steam consumption quantity is big, the NACF deterioration is fast, solvent recovering rate is low, reclaims solvent instability, of poor quality, and device security (catching fire) hidden danger is high.
At present, the equipment that activated carbon fiber organic waste gas disclosed both at home and abroad, open and that adopt purified, reclaimed organic solvent substantially all adopts the malleation absorption method, has adopted the water vapour desorption simultaneously.Like this, close when carrying out desorption at gas inlet and outlet, be in slight positive pressure state in the absorber often, water vapour often is difficult to reach the low temperature level below 100 ℃ like this, but generally being in 100～120 ℃, a series of shortcomings also just become the present technological difficulties of this processing method.
Summary of the invention
The purpose of this utility model provides a kind of organic waste-gas purification retracting device, this device can be avoided the leakage because of system, cause organic exhaust gas to purifying the pollution in place, improve the handling rate of device, can also improve the quality that reclaims solvent, improve the security of NACF layer, prolong the service life of NACF layer, simultaneously also save the water vapour consumption, both reduced operating cost, also alleviated the pressure of follow-up water treatment.
To achieve the above object of the invention, the utility model is by the following technical solutions: this organic exhaust gas absorbing recovery device, it comprises: two above NACF fixed-bed adsorbers, absorber connect valve and pending exhaust output tube road, the outlet of the absorber machine of giving a dinner for a visitor from afar; The condensate liquid pipeline of absorber bottom connects cooler inlet, and cooler outlet connects U-shaped fluid-tight pipeline, and U-shaped liquid sealing pipe way outlet connects the layering groove, and the outlet of layering groove solvent pipe connects storage tank; The vapour phase property management road of absorber bottom desorption connects condenser, and condensation mixed liquor pipeline connects cooler; Gas piping on condenser, layering groove, storage tank top is connected in parallel to the vavuum pump loop, and this vacuum pump outlet is connected to the pipeline that waste gas enters absorber; The top of absorber connects a vapor line; This device is provided with atmospheric control.
This apparatus features is:
Can be used for negative-pressure adsorption, that is to say, blower fan is positioned at the back of absorber outlet on stream, like this, not only can avoid the organic exhaust gas of high concentration to pass through blower fan, but also can avoid leakage because of system, and cause organic exhaust gas to purifying the pollution in place, also can improve the handling rate of device simultaneously.Blower fan distribution transforming simultaneously is system frequently, and it is more flexible that whole device was handled, and avoids energy waste, but also assurance device necessary processing amount simultaneously makes system pass through the frequency converter frequency conversion and moves more stable.In addition, adopt the negative-pressure adsorption method, also help the carrying out of low temperature desorption method, avoid malleation absorption method formed pressure-fired in absorber.
Adopt the low temperature desorption method, that is to say, under the absorber internal pressure is reduced pressure, (below 100 ℃, be preferably in 80 ℃) at low temperatures and carry out desorption with water vapour.This desorption mode can improve the quality that reclaims solvent, improves the security of NACF layer, prolongs the service life of NACF layer, has also saved the water vapour consumption simultaneously, has both reduced operating cost, has also alleviated the pressure of follow-up water treatment.Adopt this kind method especially the organic exhaust gas that contains ketone, ester class and high boiling solvent to be handled, its effect is remarkable.The oxidation of the ketones solvent that the low temperature desorption takes place in the time of can suppressing desorption, decomposition, polymerisation, perhaps hydrolysis of esters solvent etc. is to the reaction of the big solvent of dependence on temperature, thereby avoided producing as materials such as alcohols are sneaked into situation in the recovery solvent because of reaction, also avoid the generation of high boiling substance, thereby the water vapour consumption of having avoided high boiling substance to bring is big, it is painted, smelly to reclaim solvent, the adsorbent deterioration, the absorbent core temperature rises, and causes to promote the form that reaction is carried out that further the accident that adsorbent catches fire takes place.
This apparatus features also is: it is different from the negative-pressure adsorption of present employing, and existing negative-pressure adsorption still is difficult to make absorber to form higher vacuum carrying out the desorption stage, makes water vapour reach low temperature level.When adopting the low temperature desorption, water vapour will reach below 100 ℃ and (be preferably in 80～85 ℃), just must reach pact-37.2kPa (87.5 ℃) in the absorber, even low slightly.Except that adopting low pressure absorption, also need to realize this moment by other measure.The utility model has adopted vavuum pump and some instrument, valve and control element to realize in addition.Adopt vavuum pump that absorber is bled, motor-driven valve and pressure transmitter are equipped with in the vacuum pump inlet place, and the work of vavuum pump is controlled with the measured data of Pressure gauge of adsorbing on the core body according to being arranged on the absorber by motor-driven valve.
Owing to form certain vacuum in the absorber, and the intrasystem solvent recovery of whole cleaning and recovering process such as condenser that are connected with absorber--the water-oil separating part can be sneaked into some incondensable gases, must cause stripping vapor can't enter condenser or recovery solvent refluxing phenomenon like this.So adopting necessary anti-backflow measure also is the key of implementing decompression water at low temperature steam desorption.Adopting simple fluid-tight, is to be difficult to realize blocking backflow under so big vacuum, so must install electrically operated valve additional on the leakage fluid-tight pipeline under absorber; Installing fluid-tight pipe fitting between spiral sheet condenser and oil water separator; In the installing fluid-tight of drain place, oil water separator bottom; On condenser and oil-water separation tank, install the incondensable gas discharge tube additional, incondensable gas is inserted vacuum pump inlet, send into system front end by vavuum pump, carry out adsorption treatment once more with the gas of in absorber, being taken out.Incondensable gas conveyance conduit and stripping vapor enter on the pipeline of condenser all setting pressure tables, the foundation that the data that record are carried out as electrically operated valve before the vavuum pump too.Setting by many places fluid-tight in the system, the backflow phenomenon of having avoided decompression to bring, also solved simultaneously the influence of incondensable gas to oil-water separation system, make that the quality that reclaims solvent is also further improved in separation process, separating effect is more remarkable.
The utility model has the advantages that: not only can avoid the organic exhaust gas of high concentration to pass through blower fan, but also can avoid leakage, cause organic exhaust gas, also can improve the handling rate of device simultaneously purifying the pollution in place because of system.Can also improve the quality that reclaims solvent, improve the security of NACF layer, prolong the service life of NACF layer, also save the water vapour consumption simultaneously, both reduce operating cost, also alleviate the pressure of follow-up water treatment.
Description of drawings
Fig. 1: the apparatus structure schematic diagram that provides for the utility model.
Fig. 2: be absorbent core body structure schematic diagram among Fig. 1
The specific embodiment
Among Fig. 1,1,2 is absorber, and absorber is at least two, and two absorbers form the circulatory system.Absorber also can be 3,4,5 .... etc., use with parallel way.Can a plurality of series connection as one group.Like this, the scope of application that the utility model device is handled is wider, more flexible.Whole technical process can automatically switch the operation of the absorption that hockets, desorption (desorb) technical process by the PLC programme-control.Adsorption process:
Organic exhaust gas is come by the workshop gas gathering system; (gas of system handles is organic exhaust gas through fire-retardant filter 11 (F1); this equipment is more guaranteed to security of system; to remove impurities in waste gas simultaneously, play protection ACF, prolong the ACF life-span; guarantee that ACF keeps the effect than high adsorption rate); then through subcooler 12 (W1) (exhaust inlet temperatures of equipment should be lower than 40 ℃, as is higher than 40 ℃ waste gas and need increases air-cooling apparatus, and the rule of absorption is that the low more adsorption rate of temperature is high more).
Through after the preliminary treatment, organic exhaust gas enters the cavity of resorption of absorber 1, absorber 2 respectively through Pneumatic three-way flapper valve V1a, V1b, and in cavity of resorption, the gas ecto-entad passes the absorbent core of hollow, passes through the epicoele of absorber then, and clean gas is through blower fan 3 emptyings.In adsorption process, the organic matter in the waste gas is adsorbed in the NACF.
Desorption (desorb) process:
After adsorbing the absorption that reaches capacity, absorber needs to carry out desorption when (claiming desorb again), need the last valve plate cylinder 1-1 of the absorber of desorption to depress, cover absorbent core, steam valve is opened, steam purges ACF from inside to outside from absorbent core, the mixed vapour that purges out forms two parts, and a part becomes condensate liquid and flows away from the funnel of absorber bottom and directly enter cooler 5 (W3); Another part vapour phase then arrives condenser 4 (W2) through triple valve V1a, V1b, becomes to enter cooler W3 once more after the condensation mixed liquor and carry out time condensation, flows into layering groove 6 (B2) afterwards again and carries out gravitational separation.The organic solvent that floats over the top overflows to storage tank 7 (B3), and with the liquid level of floating ball lever meter detection storage tank, this signal controlling positive displacement pump 8 (P3) reclaims the organic solvent discharger in order to using again; In the condenser W2 shell side and a small amount of fixed gas in the layering groove, storage tank through motor-driven valve V5, pressure transmitter V6, send the absorber inlet to carry out second adsorption once more by vavuum pump 9 (P2).Condensed water in the layering groove is by going out device from pressure, and condensation-water drain connects a U-shaped liquid sealing pipe.
Water at low temperature steam desorption: under reduced pressure (below 100 ℃, be preferably in 80～85 ℃) at low temperatures and carry out desorption with water vapour.Utilize vavuum pump 9 (P2) that absorber is bled, make to reach big vacuum in the absorber, so that saturated vapor reduces by temperature under the decompression in the absorber.Vavuum pump is controlled according to pressure measured in the absorber by motor-driven valve V5 and pressure transmitter V6.
Among Fig. 1, V3a, V3b, V4a, V4b are valve, PI is a Pressure gauge, T
EBe thermometer, Pw is a fresh water (FW), and Cw is a cooling water.Among the figure, 1-1 represents cylinder, and by atmospheric control control, the last valve plate 1-2 that is connected with piston in the cylinder can upper and lowerly move, and presses down during desorb.
Among Fig. 2, absorber is by absorption core body 13, bearing plate, cramp bar, discharge chamber, inlet chamber, exhaust outlet, gas-distribution pipe, manhole, liquid seal device, leakage fluid dram, exhaust outlet, temperature element, load cell (sequence number of above-mentioned parts is omitted).An interface is offered in the lower floor side of absorber, connect a threeway pneumatic operated valve, realize the turnover wait to adsorb waste gas and emersion object by the threeway operated pneumatic valve, the upper sides of absorber is offered two interfaces, one of them interface connects an electronic steam ball valve, the turnover of electrical ball valve control stripping steam.
Fixed bed in the utility model absorber is formed to the absorption core body of dozens of annulus or flat ring cylinder formula (annulus is thin or thick, cylinder or length or weak point), cage shape felt body by one, is a kind of fixed bed of modular structure.
Among Fig. 2,13-11 is a hanger, and 13-12 is a vapor interface, and 13-10 is a loam cake, and 13-1 is the chassis, and 13-7 is the charcoal fiber, and 13-3 is a steel pipe, and 13-4 is a steel wire, and 13-5 filler ring, 13-6 are the cage bar, and 13-8 is the cage hoop, and 13-9 is a tuck.
On the absorption bearing plate of core body vertical lifting in absorber, the driving fit level of being assemblied in be assemblied on the absorber top ports, have on the bearing plate with absorbent core number, big or small corresponding perforate.(it is extremely convenient to make loading and unloading change adsorbent, and can not produce secondary pollution or be detrimental to health as changeing particle charcoal bed).Adsorption layer annulus thickness is 20cm, also can adsorption layer be transferred according to exhausted air quantity, concentration situation thickly to be as thin as 5cm to 40cm or accent.Absorbent core is designed to one section of 1150mm, can form an absorbent core with two sections according to exhausted air quantity and concentration situation, forms the long column body, also can independent one section one-tenth core.After waste gas enters absorber by the threeway Pneumatic baffle valve, waste gas arrives open circle in the core body by absorbent core circle ring column periphery by adsorbent, by the gas vent in the upper cover plate of absorption core body (the cover plate action is realized by pneumatic system control), through the blower fan emptying.
The arrangement mode of absorption core body generally becomes number row shape to make absorber squarely casing shape as far as possible.Can be arranged to cylindricly individually, as contain the absorber of 3 absorbent core.Because of what adopt is the steam desorption, has certain pressure, so square absorber sheathing material adopts the corrugated steel that is pressed with certain angle to make, with security of operation and the flexible ability of pressure-bearing that guarantees equipment.
Claims (5)
1, a kind of organic waste-gas purification retracting device, it is characterized in that: it comprises: two above NACF fixed-bed adsorbers, absorber connect valve and pending exhaust output tube road, the outlet of the absorber machine (3) of giving a dinner for a visitor from afar; Absorber bottom condensate liquid pipeline connects cooler (5) import, and cooler outlet connects U-shaped fluid-tight pipeline, and U-shaped liquid sealing pipe way outlet connects layering groove (6), and the outlet of layering groove solvent pipe connects storage tank (7); The vapour phase property management road of absorber bottom desorption connects condenser (4), and condensation mixed liquor pipeline connects cooler (5); Gas piping on condenser, layering groove, storage tank top is connected in parallel to the vavuum pump loop, and this vacuum pump outlet is connected to the main pipe rail that waste gas enters absorber; The top of absorber connects a vapor line; This device is provided with atmospheric control.
2, a kind of organic waste-gas purification retracting device according to claim 1 is characterized in that: be connected with pressure transmitter and electrically operated valve in the vavuum pump loop.
3, a kind of organic waste-gas purification retracting device according to claim 1 and 2, it is characterized in that: the condensation-water drain of layering groove (6) connects a U-shaped liquid sealing pipe.
4, a kind of organic waste-gas purification retracting device according to claim 1 and 2 is characterized in that: on the leakage fluid-tight pipeline under absorber electrically operated valve is housed.
5, a kind of organic waste-gas purification retracting device according to claim 1 and 2 is characterized in that: pending exhaust output tube road is to being provided with filter (11) and cooler (12) between the absorber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201874037U CN201135846Y (en) | 2007-12-24 | 2007-12-24 | Organic waste gas cleaning and recovering device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201874037U CN201135846Y (en) | 2007-12-24 | 2007-12-24 | Organic waste gas cleaning and recovering device |
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| CN201135846Y true CN201135846Y (en) | 2008-10-22 |
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| CNU2007201874037U Expired - Fee Related CN201135846Y (en) | 2007-12-24 | 2007-12-24 | Organic waste gas cleaning and recovering device |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519773B (en) * | 2009-04-20 | 2011-01-12 | 南京大学 | U-shaped pipe connecting method for gas path of CVD material growing device |
| CN103521030A (en) * | 2013-09-29 | 2014-01-22 | 江苏中远环保科技有限公司 | Novel process and device for treating organic waste gas through adsorption method |
| CN103537167A (en) * | 2012-07-09 | 2014-01-29 | 北京奥依特科技有限责任公司 | Harmful gas vacuum adsorber |
| CN103657133A (en) * | 2013-12-06 | 2014-03-26 | 福建恒嘉环保设备有限公司 | Efficient energy-saving condensing apparatus |
| CN103977670A (en) * | 2014-05-31 | 2014-08-13 | 李玉彪 | Device for recycling waste gas containing volatile organic compounds |
| CN104536364A (en) * | 2014-12-03 | 2015-04-22 | 武汉旭日华科技发展有限公司 | Organic solvent recovery device with air inlet control and control method thereof |
| CN105107336A (en) * | 2015-07-29 | 2015-12-02 | 杭州奥通环保科技有限公司 | Carbon disulfide exhaust gas desorption treatment device and method |
| CN105582781A (en) * | 2015-12-28 | 2016-05-18 | 武汉旭日华科技发展有限公司 | Mobile wet desorption device and organic solvent recovering method thereof |
| CN105854478A (en) * | 2016-04-01 | 2016-08-17 | 武汉旭日华科技发展有限公司 | Apparatus and method for treating exhaust gas in the production of PVC gloves |
| CN105903311A (en) * | 2016-06-07 | 2016-08-31 | 黎城蓝天燃气开发有限公司 | Gas adsorber and system and method for recycling low-boiling-point organic matter |
| CN107042050A (en) * | 2017-01-10 | 2017-08-15 | 江苏净领环保科技有限公司 | One kind automatically controls emission-control equipment |
| CN107376454A (en) * | 2017-08-30 | 2017-11-24 | 安徽中鼎橡塑制品有限公司 | A kind of double barrels type vacuum equipment |
| CN110548361A (en) * | 2018-05-31 | 2019-12-10 | 中国船舶重工集团公司第七一一研究所 | Recovery system and recovery method of organic waste gas |
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2007
- 2007-12-24 CN CNU2007201874037U patent/CN201135846Y/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519773B (en) * | 2009-04-20 | 2011-01-12 | 南京大学 | U-shaped pipe connecting method for gas path of CVD material growing device |
| CN103537167A (en) * | 2012-07-09 | 2014-01-29 | 北京奥依特科技有限责任公司 | Harmful gas vacuum adsorber |
| CN103521030A (en) * | 2013-09-29 | 2014-01-22 | 江苏中远环保科技有限公司 | Novel process and device for treating organic waste gas through adsorption method |
| CN103521030B (en) * | 2013-09-29 | 2015-07-15 | 江苏中远环保科技有限公司 | Novel process and device for treating organic waste gas through adsorption method |
| CN103657133B (en) * | 2013-12-06 | 2015-07-22 | 福建恒嘉环保设备有限公司 | Efficient energy-saving condensing apparatus |
| CN103657133A (en) * | 2013-12-06 | 2014-03-26 | 福建恒嘉环保设备有限公司 | Efficient energy-saving condensing apparatus |
| CN103977670A (en) * | 2014-05-31 | 2014-08-13 | 李玉彪 | Device for recycling waste gas containing volatile organic compounds |
| CN104536364B (en) * | 2014-12-03 | 2017-05-10 | 武汉旭日华科技发展有限公司 | Organic solvent recovery system with air inlet control and control method thereof |
| CN104536364A (en) * | 2014-12-03 | 2015-04-22 | 武汉旭日华科技发展有限公司 | Organic solvent recovery device with air inlet control and control method thereof |
| CN105107336A (en) * | 2015-07-29 | 2015-12-02 | 杭州奥通环保科技有限公司 | Carbon disulfide exhaust gas desorption treatment device and method |
| CN105582781A (en) * | 2015-12-28 | 2016-05-18 | 武汉旭日华科技发展有限公司 | Mobile wet desorption device and organic solvent recovering method thereof |
| CN105854478A (en) * | 2016-04-01 | 2016-08-17 | 武汉旭日华科技发展有限公司 | Apparatus and method for treating exhaust gas in the production of PVC gloves |
| CN105903311A (en) * | 2016-06-07 | 2016-08-31 | 黎城蓝天燃气开发有限公司 | Gas adsorber and system and method for recycling low-boiling-point organic matter |
| CN105903311B (en) * | 2016-06-07 | 2019-07-12 | 黎城蓝天燃气开发有限公司 | Gas absorber and the system and method for recycling low-boiling-point organic compound |
| CN107042050A (en) * | 2017-01-10 | 2017-08-15 | 江苏净领环保科技有限公司 | One kind automatically controls emission-control equipment |
| CN107376454A (en) * | 2017-08-30 | 2017-11-24 | 安徽中鼎橡塑制品有限公司 | A kind of double barrels type vacuum equipment |
| CN110548361A (en) * | 2018-05-31 | 2019-12-10 | 中国船舶重工集团公司第七一一研究所 | Recovery system and recovery method of organic waste gas |
| CN110548361B (en) * | 2018-05-31 | 2022-06-07 | 中国船舶重工集团公司第七一一研究所 | Recovery system and recovery method of organic waste gas |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU K-LEAD ENVIRONMENTAL PROTECTION TECHNOLOGY Free format text: FORMER OWNER: YAN NAIFENG Effective date: 20091211 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091211 Address after: No. 58 Jiang Yue Road, Jiangsu City, Nantong Province, China: 226005 Patentee after: Jiangsu Kelite Environmental Protection Technology Co., Ltd. Address before: Floor 2, building 35, No. 215, Qinghua East Road, Beijing, Haidian District, 100083 Patentee before: Yan Naifeng |
|
| DD01 | Delivery of document by public notice |
Addressee: Chen Zhimin Document name: Notification to Pay the Fees |
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| DD01 | Delivery of document by public notice |
Addressee: Chen Zhimin Document name: Notification of Termination of Patent Right |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081022 Termination date: 20111224 |