CN101650031A - Start-up compound burner for water-coal-slurry or coal dust gasification furnace - Google Patents
Start-up compound burner for water-coal-slurry or coal dust gasification furnace Download PDFInfo
- Publication number
- CN101650031A CN101650031A CN 200910092771 CN200910092771A CN101650031A CN 101650031 A CN101650031 A CN 101650031A CN 200910092771 CN200910092771 CN 200910092771 CN 200910092771 A CN200910092771 A CN 200910092771A CN 101650031 A CN101650031 A CN 101650031A
- Authority
- CN
- China
- Prior art keywords
- combustion
- tube channel
- gas tube
- fuel gas
- gas passage
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
Abstract
The invention provides a start-up compound burner for a water-coal-slurry or coal dust pressure gasification furnace. The start-up compound burner comprises a fuel gas passage pipe and a combustion-supporting gas passage pipe which are coaxially sheathed with each other and respectively arranged inside and outside, and ignition electrodes, wherein the fuel gas passage pipe is connected with the combustion-supporting gas passage pipe through two flanges, the two flanges are sealed by a gasket, the size of an annular space between a flow passage at the front end of the combustion-supporting gaspassage pipe and the fuel gas passage pipe is adjusted by the thickness of the gasket, and the ignition electrodes are arranged outside the combustion-supporting gas passage pipe and extended to the front ends of the fuel gas passage pipe and the combustion-supporting gas passage pipe. The start-up compound burner has the advantages of compact structure and space saving. The burning of various fuel gases can be realized by adjusting the fuel gas passage. During the actual operation, the burner can automatically ignite and keep temperature rise stable. Besides, the invention can also lower thework intensity of on-site personnel, and can perform continuous operations of baker and chemical industrial feeding without being dismantled after the installation in cold conditions.
Description
Technical field
The present invention relates to a kind of water-coal-slurry or coal dust pressurizing gasifying apparatus, specifically, relate to the start-up compound burner of a kind of water-coal-slurry or coal dust pressurized-gasification furnace.
Background technology
The gasification technology of coal be a kind of can be with the technology of coal high-efficiency clean utilization, the current countries in the world that become solve one of problem of environmental pollution dominant technology, also are key areas of international competition.In the industrialized coal pressurized-gasification furnace in our times various countries, the dissimilar start-up compound burners that use when going into operation respectively have pluses and minuses.
The key equipment of water-coal-slurry or coal dust pressurized gasification technology is a gasification furnace, and gasification furnace all will use startup burner when going into operation.With the novel water-coal-slurry gasification furnace is example, and it at first wants baker when going into operation, and uses startup burner that furnace temperature is dried by the fire to 1200 ℃, and constant temperature about 10 hours is pulled down startup burner, and refractory brick and startup burner blind flange are installed then, the gasification furnace driving that just can feed intake.
This kind startup burner is when baker, need the manual firing, complex operation, often because of multiple reasons such as negative pressure in the stove and shock chamber's level fluctuation cause stopping working, and flame-out back is difficult in time finding that operating personnel are only when finding that furnace temperature descends, could judge whether startup burner is flame-out, this situation causes fuel gas to enter in a large number in the stove, can cause the combustible gas in the gasification furnace to explode the safety that jeopardizes gasification furnace refractory brick and site operation personnel as putting burner immediately.As avoiding this type of accident to take place, will stop fuel gas, startup burner is pulled down, and the fuel gas in the stove is replaced, the baker of lighting a fire once more.This is a kind of method of operating that is adopted on the present industrialized unit, and the shortcoming of this method is that the flame-out time of casualty of processing is long, and labour intensity is big.Under original baker condition, this service life that can not can reduce refractory brick according to the temperature that heating curve changes.
The water-cooling wall pulverized coal gasification furnace is when going into operation, using startup burner that gasifier temperature is raised to uniform temperature carries out coal dust and feeds intake, the startup burner of this moment can not be pulled down because of temperature, pressure are arranged in the stove, therefore, startup burner, burning torch, the fire monitor equipment of a lot of water-cooling wall gasifying furnace devices all are independent settings, not only cause the utilization rate of some units low, also increased the expense expenditure.
Summary of the invention
The start-up compound burner that the purpose of this invention is to provide a kind of water-coal-slurry or coal dust pressurized-gasification furnace, its compact conformation need not dismounting, and can guarantee that baker, chemical industry feed intake carries out continuously.
In order to realize the object of the invention, the start-up compound burner of a kind of water-coal-slurry of the present invention or coal dust pressurized-gasification furnace, it comprises coaxial from inside to outside fuel gas tube channel that is nested with and combustion-supporting gas tube channel, and ignitor, connect by two flanges between described fuel gas tube channel and the combustion-supporting gas tube channel, and pass through gasket seal between two flanges, described combustion-supporting gas tube channel and described fuel gas tube channel front end runner annular space size are by the spacer thickness adjustment, described ignitor is located at outside the described combustion-supporting gas tube channel, and extends the front end of described fuel gas tube channel and combustion-supporting gas tube channel.
Wherein, described combustion-supporting gas passage inner coaxial tube is provided with the fire inspection tube channel that is used to install flame detector.
Be provided with visual eyepiece and the flame detector that is used to observe flame in the described fire inspection tube channel.
The front end of described fuel gas tube channel and combustion-supporting gas tube channel is the closing in shape.
Described fuel gas tube channel front end is provided with cooling jacket.
Described ignitor is sheathed in the described protective casing, and described protective casing is fixed in outside the described combustion-supporting gas tube channel.
Described protective casing one end passes the oblique endoporus of offering on the described flange.
Described pad is anistree pad.
Can fix by this areas such as flange parts commonly used between each parts of the present invention.
The present invention can change combustion-supporting gas tube channel and fuel gas tube channel front end relative distance by regulating the thickness of octangonal ring, can realize adjusting fuel gas runner annular space size, the different fuel thereby the realization burner can burn.
Different fuel gas is because the calorific value difference, the temperature that wants to reach identical will realize with different flows, every kind of fuel gas is different with the proportioning of combustion-supporting gas, therefore combustion-supporting gas needs flow also different, burner requires the medium velocity of ejection will be higher than the burning velocity of medium, just needs the adjusting play so changed medium.
The present invention adopt with fire examine tube channel, ignitor is concentrated and is placed in startup burner inside, can save the space on the top of gasification furnace like this, reduces the unnecessary perforate of gasification furnace furnace roof.
Shortcomings such as the present invention overcomes existing (hot wall stove), and the startup burner lighting up procedure is loaded down with trivial details, danger coefficient big, easily stop working, the flame monitoring means of utilizing in fire inspection tube channel and the fiery detecting/monitoring device raising stove are installed, situation in the stove can be accomplished to monitor in real time, long-range processing rapidly in time can be realized.Reduce site operation personnel's labour intensity and security risk coefficient.Instrument control valve is installed on fuel that links to each other with the present invention and combustion-supporting gas passage, and the action of this instrument control valve is controlled by emergency stopping system, and after fiery detecting/monitoring device monitoring was less than flame, emergency stopping system triggered the valve closing of fuel and combustion-supporting medium.
The shortcoming that the present invention overcomes existing (hot wall stove) startup burner must be removed in the stove when chemical industry feeds intake, the situation of water-cooled fireplace startup burner protection difficulty.The present invention just can remove once installation, can carry out the continued operation that feeds intake of baker, chemical industry, reduces Field Force's labour intensity.
The present invention can use as torch kept burning day and night according to the operating mode needs after water-coal-slurry or coal dust pressurized-gasification furnace (hot wall stove, cold hearth) chemical industry feed intake.If do not enable torch kept burning day and night, can be used for protecting this device and improve effective pneumatolytic branch by this invention an amount of nitrogen of filling or steam in stove.
Start-up compound burner compact conformation of the present invention, conserve space.Can adjust fuel gas passage annular space, thereby realize to burn various fuel gas.During actual motion, can light a fire and keep temperature rise stable automatically.
Description of drawings
Fig. 1 is the structural representation of the start-up compound burner of water-coal-slurry of the present invention or pulverized coal gasification furnace.
Among the figure:
1 mounting flange, 2 fuel gas tube channel
3 combustion-supporting gas tube channel, 4 fire inspection tube channel
5 pads, 6 visual eyepieces
7 ignitors, 8 octangonal rings
9 water-cooled coil pipes, 10 fire inspection installing ports
Enter the mouth 12 fuel gas inlet of 11 combustion-supporting gases
13,13 ' flange, 14 oblique endoporus
15 protective casings
The specific embodiment
Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.
As shown in Figure 1, gasifier to start working compound burner of the present invention is connected with gasification furnace by mounting flange 1.Center drilling welding fuel gas tube channel 2 at mounting flange 1, the fuel gas tube channel is by the external fuel gas inlet 12 of flange, combustion-supporting gas tube channel 3 is installed in fuel gas tube channel 2, mounting means is to connect by two flanges 13,13 ', combustion-supporting gas tube channel 3 must keep axialities with fuel gas tube channel 2 when welding, installation, combustion-supporting gas tube channel 3 is circumscribed with combustion-supporting gas inlet 11 by flange, introduces combustion-supporting gas.The front end of fuel gas tube channel 2 and combustion-supporting gas tube channel 3 is the closing in shape.
The general fuel gas of gasification furnace adopts coal gas, synthesis gas or oil liquefied gas more; Combustion-supporting gas adopts air or oxygen.
On combustion-supporting gas tube channel 3 and flange 13 that fuel gas tube channel 2 is connected; have an oblique endoporus 14, ignitor 7 is installed in the endoporus tapping by being threaded; ignitor 7 is located in the protective casing 15, and protective casing 15 1 ends pass the oblique endoporus of offering on the flange 13 14.The protective casing 15 of ignitor 7 fixes with the outer wall of combustion-supporting gas tube channel 3, is to fix by two to three gussets that are welded on combustion-supporting gas tube channel 3 outer walls.Two flanges 13 are RJ face flanges, two flanges are to seal by octangonal ring 8, adjust the runner annular space size of burner head fuel gas passage by the thickness H value of octangonal ring 8 in the present invention, when octangonal ring 8 thickness increase, the relative distance of fuel gas passage and combustion-supporting gas channel front end is just big, fuel gas runner gap is just big, and the thickness of octangonal ring 8 is when reducing, the relative distance of combustion-supporting gas channel and fuel gas passage front end is just little, fuel gas runner gap is just little, realizes the different gas that burns afterwards thereby reach change runner gap.
Fire inspection tube channel 4 is installed in combustion-supporting gas tube channel 3, it is connected by flange with combustion-supporting gas tube channel 3, and keep axialities with combustion-supporting gas tube channel 3, a pair of flange is welded in the top of fire inspection tube channel 4, visual eyepiece 6 is installed in the middle of the flange and is passed through pad 5 sealings, a source nipple is welded in this top to flange, i.e. fire inspection installing port 10 is so that install flame monitor (not marking among the figure).At fuel gas passage front end of the present invention water-cooled coil pipe 9 is housed, start-up compound burner front end of the present invention is carried out water circulation cooling, play the effect of cooling protection start-up compound burner front end (head).
The course of work of start-up compound burner of the present invention: start-up compound burner is installed under the gasification furnace cold conditions, determines fuel gas runner annular space according to working medium and process conditions before installation, and 8 thickness H adjust with octangonal ring, and this annular space size is met the requirements.Whether test firing electrode under the cold conditions, fiery detecting/monitoring device be working properly, and debug fiery inspection and fuel gas and combustion-supporting gas instrument control valve interlock system.The lighting up procedure that goes into operation after everything is ready, starting ignition button electrode, ignitor 7 began to discharge 10～30 seconds, fed fuel gas in ignitor 7 discharges after 3 seconds, and delaying time fed combustion-supporting gas in 2～5 seconds again, and fuel gas is lighted.Fiery detecting/monitoring device then is considered as loss of ignition as detecting less than flare up fire after ignitor finishes to discharge 4～10 seconds, and the security logic system closes fuel gas and combustion-supporting gas instrument control valve automatically.
In the process of the successful baker of igniting, because of stopping working that various operating modes cause, fiery detecting/monitoring device can effectively be avoided because of can not in time finding flame-out equipment, the personal safety accident that causes like this monitoring and the automatic stopping processing in the very first time.The present invention can use as torch kept burning day and night according to the operating mode needs after water-coal-slurry or coal dust pressurized-gasification furnace (hot wall stove, cold hearth) chemical industry feed intake.If do not enable torch kept burning day and night, can be used for protecting this burner and improve effective pneumatolytic branch by this invention an amount of nitrogen of filling or steam in gasification furnace.
Though above the present invention is described in detail with a general description of the specific embodiments, on basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.Therefore, these modifications or improvements all belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.
Claims (8)
1. the start-up compound burner of water-coal-slurry or coal dust pressurized-gasification furnace, it is characterized in that, it comprises coaxial from inside to outside fuel gas tube channel (2) that is nested with and combustion-supporting gas tube channel (3), and ignitor (7), pass through two flanges (13 between described fuel gas tube channel (2) and the combustion-supporting gas tube channel (3), 13 ') connect, and two flanges (13,13 ') seal by pad (8) between, described combustion-supporting gas tube channel (2) is passed through pad (8) thickness adjustment with described fuel gas tube channel (3) front end runner annular space size, described ignitor (7) is located at outside the described combustion-supporting gas tube channel (3), and extends the front end of described fuel gas tube channel (2) and combustion-supporting gas tube channel (3).
2. start-up compound burner according to claim 1 is characterized in that, the coaxial fire inspection tube channel (4) that is used to install flame detector that is provided with in the described combustion-supporting gas tube channel (3).
3. start-up compound burner according to claim 2 is characterized in that, is provided with visual eyepiece (6) and flame detector in the described fire inspection tube channel.
4. start-up compound burner according to claim 1 is characterized in that, the front end of described fuel gas tube channel (2) and combustion-supporting gas tube channel (3) is the closing in shape.
5. according to any described start-up compound burner of claim 1-4, it is characterized in that described fuel gas tube channel (2) front end is provided with cooling jacket (9).
6. according to any described start-up compound burner of claim 1-5, it is characterized in that described ignitor (7) is sheathed in the described protective casing (15), described protective casing (15) is fixed in outside the described combustion-supporting gas tube channel (3).
7. start-up compound burner according to claim 6 is characterized in that, described protective casing (15) one ends pass the oblique endoporus of offering on the described flange (13) (14).
8. according to any described start-up compound burner of claim 1-7, it is characterized in that described pad (8) is an octangonal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910092771 CN101650031B (en) | 2009-09-18 | 2009-09-18 | Start-up compound burner for water-coal-slurry or coal dust gasification furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910092771 CN101650031B (en) | 2009-09-18 | 2009-09-18 | Start-up compound burner for water-coal-slurry or coal dust gasification furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101650031A true CN101650031A (en) | 2010-02-17 |
| CN101650031B CN101650031B (en) | 2011-04-13 |
Family
ID=41672324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910092771 Expired - Fee Related CN101650031B (en) | 2009-09-18 | 2009-09-18 | Start-up compound burner for water-coal-slurry or coal dust gasification furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101650031B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102746899A (en) * | 2012-04-25 | 2012-10-24 | 神华集团有限责任公司 | Coal water slurry/coal fine gasification furnace and feeding method thereof |
| CN103173249A (en) * | 2011-12-20 | 2013-06-26 | 西安航天远征流体控制股份有限公司 | Monitoring device for plug type gasifying furnace |
| CN103173250A (en) * | 2011-12-20 | 2013-06-26 | 西安航天远征流体控制股份有限公司 | Integrated ignition starting system |
| CN104560212A (en) * | 2015-01-23 | 2015-04-29 | 水煤浆气化及煤化工国家工程研究中心 | Multi-section water-cooling wall high-efficiency chilling gasification device |
| CN105950220A (en) * | 2016-06-28 | 2016-09-21 | 上海齐耀热能工程有限公司 | Adjustable integrated gasification startup burner |
| CN103173250B (en) * | 2011-12-20 | 2016-12-14 | 西安航天远征流体控制股份有限公司 | Integration ignition starting system |
| CN107033972A (en) * | 2017-05-09 | 2017-08-11 | 哈尔滨工业大学 | A kind of dry coal powder airflow bed gasification furnace burner with purging gas shielded |
| CN107940455A (en) * | 2017-12-21 | 2018-04-20 | 廊坊奥必燊热能科技有限公司 | Asphalt concrete mixer burner multi fuel burning torch |
| CN108458336A (en) * | 2017-02-22 | 2018-08-28 | 清华大学山西清洁能源研究院 | Gasification furnace |
| CN109181774A (en) * | 2018-08-22 | 2019-01-11 | 清华大学山西清洁能源研究院 | The coal-water slurry gasification burner of integrated ignition function |
| CN112963836A (en) * | 2021-04-06 | 2021-06-15 | 陕西延长石油（集团）有限责任公司 | High-heat-load diesel starting furnace heating device with pilot burner |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4443228A (en) * | 1982-06-29 | 1984-04-17 | Texaco Inc. | Partial oxidation burner |
| DD285523A7 (en) * | 1988-10-12 | 1990-12-19 | �����@������������������k�� | BURNER WITH ELECTRIC TORQUE DEVICE FOR GASOUS FUELS AND OXYGEN |
| US5261602A (en) * | 1991-12-23 | 1993-11-16 | Texaco Inc. | Partial oxidation process and burner with porous tip |
| CN2306406Y (en) * | 1997-09-08 | 1999-02-03 | 华东理工大学 | Five-way load controllable water-coal fluid gasifying jet nozzle |
| CN1189385C (en) * | 2002-12-06 | 2005-02-16 | 华东理工大学 | Burning nozzle with inner distributor and three jets for oxidizing natural gas partially to produce synthetic gas |
| CN1318800C (en) * | 2004-01-21 | 2007-05-30 | 中国石化集团兰州设计院<Del/> | Gas-liquid mixing phase gasifying nozzle and using method |
| CN1323261C (en) * | 2005-06-24 | 2007-06-27 | 北京航天动力研究所 | Powder-combustible vortex burner |
| CN201272783Y (en) * | 2008-09-04 | 2009-07-15 | 中国船舶重工集团公司第七一一研究所 | Combined startup burner for powder coal gasification furnace |
-
2009
- 2009-09-18 CN CN 200910092771 patent/CN101650031B/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103173249A (en) * | 2011-12-20 | 2013-06-26 | 西安航天远征流体控制股份有限公司 | Monitoring device for plug type gasifying furnace |
| CN103173250A (en) * | 2011-12-20 | 2013-06-26 | 西安航天远征流体控制股份有限公司 | Integrated ignition starting system |
| CN103173250B (en) * | 2011-12-20 | 2016-12-14 | 西安航天远征流体控制股份有限公司 | Integration ignition starting system |
| CN103173249B (en) * | 2011-12-20 | 2016-12-14 | 西安航天远征流体控制股份有限公司 | Plug-in gasification furnace supervising device |
| CN102746899A (en) * | 2012-04-25 | 2012-10-24 | 神华集团有限责任公司 | Coal water slurry/coal fine gasification furnace and feeding method thereof |
| CN104560212A (en) * | 2015-01-23 | 2015-04-29 | 水煤浆气化及煤化工国家工程研究中心 | Multi-section water-cooling wall high-efficiency chilling gasification device |
| CN105950220A (en) * | 2016-06-28 | 2016-09-21 | 上海齐耀热能工程有限公司 | Adjustable integrated gasification startup burner |
| CN108458336A (en) * | 2017-02-22 | 2018-08-28 | 清华大学山西清洁能源研究院 | Gasification furnace |
| CN107033972A (en) * | 2017-05-09 | 2017-08-11 | 哈尔滨工业大学 | A kind of dry coal powder airflow bed gasification furnace burner with purging gas shielded |
| CN107940455A (en) * | 2017-12-21 | 2018-04-20 | 廊坊奥必燊热能科技有限公司 | Asphalt concrete mixer burner multi fuel burning torch |
| CN109181774A (en) * | 2018-08-22 | 2019-01-11 | 清华大学山西清洁能源研究院 | The coal-water slurry gasification burner of integrated ignition function |
| CN112963836A (en) * | 2021-04-06 | 2021-06-15 | 陕西延长石油（集团）有限责任公司 | High-heat-load diesel starting furnace heating device with pilot burner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101650031B (en) | 2011-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101650031B (en) | Start-up compound burner for water-coal-slurry or coal dust gasification furnace | |
| CN102261664B (en) | Novel blast furnace gas diffusion and automatic ignition system | |
| CN101575525B (en) | Device and method for controlling diffusion of gas collecting pipe | |
| CN202131322U (en) | Novel diffusing and automatic ignition system for blast furnace gas | |
| CN103822208A (en) | Burner of gasification furnace | |
| JP5487918B2 (en) | Multi-fuel burner device | |
| JP5487917B2 (en) | Multi-fuel burner device | |
| US20120282555A1 (en) | Hot surface ignition assembly for use in pilots for flaring, incineration, and process burners | |
| CN103175217B (en) | Gasifier monitoring device | |
| CN201126265Y (en) | Automatic control system of heating stove | |
| CN106091004A (en) | A kind of gas combusting limestone kiln ignition process and special purpose device | |
| CN206692606U (en) | A kind of Multichannel combination burner for coal slurry gasifier | |
| JP5458834B2 (en) | Multi-fuel burner device | |
| CN102041104A (en) | Flame detection probe protector | |
| CN209399577U (en) | Oil field is with without electric automatic control heating furnace | |
| RU151129U1 (en) | FUEL AND FUEL BURNER | |
| CN101576256A (en) | Tube furnace burner | |
| CN112239679A (en) | Combined gasifier burner | |
| JP5471370B2 (en) | Combustion air conditioner | |
| CN109237473A (en) | A kind of industrial burner system | |
| CN103322556A (en) | Pulverized coal burner | |
| CN201209856Y (en) | Combustor of tube furnace | |
| KR100526121B1 (en) | Device for ignition radiation burner | |
| CN214193146U (en) | Combined gasifier burner | |
| JP5458839B2 (en) | Oil burner in multi-fuel burner equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |
Granted publication date: 20110413 Termination date: 20140918 |
|
| EXPY | Termination of patent right or utility model |