CN102032571A - Oxygen-enriched and combustion-supporting device suitable for low calorific value fuel gas - Google Patents
Oxygen-enriched and combustion-supporting device suitable for low calorific value fuel gas Download PDFInfo
- Publication number
- CN102032571A CN102032571A CN2011100098114A CN201110009811A CN102032571A CN 102032571 A CN102032571 A CN 102032571A CN 2011100098114 A CN2011100098114 A CN 2011100098114A CN 201110009811 A CN201110009811 A CN 201110009811A CN 102032571 A CN102032571 A CN 102032571A
- Authority
- CN
- China
- Prior art keywords
- combustion
- gas
- pipeline
- oxygen
- supporting
- 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.)
- Pending
Links
Images
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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The invention relates to an oxygen-enriched and combustion-supporting device suitable for low calorific value fuel gas, which mainly comprises a combustion-supporting gas pipeline, a fuel gas pipeline, a burner nozzle and a combustion passage, wherein a baffle plate is fixed inside the combustion-supporting gas pipeline, the combustion-supporting gas pipeline is divided into a straight flow pipeline and a rotational flow pipeline, and a combustion-supporting swirler is arranged in the rotational flow pipeline; and the straight flow pipeline, the rotational flow pipeline and the fuel gas pipeline are respectively communicated with the combustion passage through the burner nozzle. The oxygen-enriched and combustion-supporting device suitable for the low calorific value fuel gas can be suitable for the oxygen-enriched combustion of low calorific value coal gas, can satisfy the use requirements on various working conditions without exchanging the burner nozzle under conditions that the fuel gas calorific value and the oxygen-enriched concentration of combustion-supporting air fluctuate singly or doubly in a larger range, realizes the complete combustion of low air-fuel ratio, finally achieves the purpose of saving energy and reducing emission and overcomes the defect of the traditional combustion device.
Description
Technical field
The present invention relates to a kind of industrial furnace auxiliary combustion equipment, particularly relate to a kind of oxygen-enriched combustion-supporting device of suitable fuel gas with low heat value.
Background technology
It is international universally recognized, effective energy-saving and emission-reduction measure that industrial furnace adopts oxygen-enriched combusting.But China's overwhelming majority industrial furnace all is to adopt air-breathing at present, and its shortcoming is to fuel gases calorific value requirement height, needs to consume the high coke-stove gas of a large amount of values.This be because: if fuel gases calorific value is low, then the combustion gas theoretical temperature combustion is lower, can't guarantee the production demand.Therefore, in order to improve the air-breathing theoretical temperature combustion, must adopt the technology of air, coal gas or sky, gas double pre-heating, fuel gases calorific value also must guarantee at 7500-9200KJ/NM
3Between, thereby require in air mixture, to contain 30%～40% high heating value coke-stove gas.
Increasingly mature along with low-cost oxygen enrichment preparation technique, the pressure of national energy-saving and emission-reduction constantly increases, and the cry that coke-stove gas is used for hydrogen metallurgy is more and more higher, and it is extremely urgent with the demand of directly utilizing low combustion value furnace gas to carry out oxygen-enriched combusting by industrial furnace.
Adopt air-breathing industrial furnace, if after implementing oxygen enrichment technology, the parameters such as flow of fuel gases calorific value, air-fuel ratio, combustion gas and combustion air incite somebody to action all that great changes will take place.Especially the mixed gas that in smelter, generally uses, its calorific value can fluctuate along with the variation of blast furnace gas and coke-stove gas mixed proportion and calorific value, increase the adjusting factor of oxygen-rich concentration again, originally employed air-breathing burner can't satisfy instructions for use at all.
This shows that above-mentioned existing burner obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.How to found a kind of oxygen-enriched combusting applicable to low-heat value gas, to the oxygen-rich concentration of fuel gases calorific value and combustion air in a big way separately under the condition of fluctuation even double oscillation, do not need to change burner, can reach the various working instructions for use, realize the completing combustion of low air-fuel ratio, the final oxygen-enriched combustion-supporting device of realizing the new suitable fuel gas with low heat value of energy-saving and emission-reduction purpose, real one of the current important research and development problem that belongs to.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of oxygen-enriched combustion-supporting device of suitable fuel gas with low heat value, make its oxygen-enriched combusting applicable to low-heat value gas, to the oxygen-rich concentration of fuel gases calorific value and combustion air in a big way separately under the condition of fluctuation even double oscillation, do not need to change burner, can satisfy the various working instructions for use, realize the completing combustion of low air-fuel ratio, finally realize the energy-saving and emission-reduction purpose, overcome the deficiency of existing burner.
For solving the problems of the technologies described above, the oxygen-enriched combustion-supporting device of a kind of suitable fuel gas with low heat value of the present invention, mainly form by combustion-supporting gas pipeline, gas pipeline, burner and burning gallery, wherein: the combustion-supporting gas pipe interior is fixed with dividing plate, the combustion-supporting gas pipeline is divided into direct current pipeline and eddy flow pipeline, and combustion-supporting cyclone is set in the eddy flow pipeline; Direct current pipeline, eddy flow pipeline and gas pipeline are communicated with burning gallery by burner respectively.
As a kind of improvement of the present invention, the spout connection of described eddy flow passage and blast tube and burner, the direct current pipeline passes the burner straight wall and connects in the burning gallery.
Described combustion-supporting gas pipeline is provided with the distributing valve of regulating direct current pipeline and eddy flow pipeline gas flow ratio.
The nozzle diameter of described burner is 50～300mm.
The nozzle diameter of described burner is 50～100mm.
Described burning gallery side also is provided with an above smoke backflow passage.
The sidewall of described burner is provided with to be observed or fire hole.
Be provided with the combustion gas cyclone in the described gas pipeline.
Described combustion gas cyclone is fixed on gas pipeline inside by connecting rod, end plate with dismountable connected mode.
After adopting such design, the present invention has following advantage at least:
1, the present invention has combustion gas and the design of combustion air bispin stream, adopt oxygenized air combustion supporting, also can oxygen-enriched air be divided into direct current, eddy flow two parts by rational proportion, variation to fuel gases calorific value and oxygen-rich concentration has very strong adjusting adaptive capacity, it is combustion-supporting to strengthen combustion gas, guarantee that fuel gas with low heat value still can realize completing combustion under low air coefficient of excess, the present invention can improve the thermal efficiency, fuel savings, minimizing discharge amount of exhaust gas and air pollution, and energy-saving effect is remarkable;
2, energy-conserving and environment-protective of the present invention, low nitrogen low-carbon (LC) effect are obvious, and facts have proved: the every raising 0.1% of the oxygen-rich concentration of combustion-supporting gas, theoretical temperature combustion improves 30 ℃, when oxygen-rich concentration reaches 28%, can save energy 30%, reduces by nearly 30% CO
2Discharging and nearly 80% NO
XDischarging;
3, economic benefit is obvious, utilize this device, the theoretical temperature combustion of low-heat value gas such as burning blast furnace gas can reach 1320 ℃, satisfy the heating furnace production requirement fully, not only saved the coke-stove gas of high price, and displaced the coke-stove gas of high heating value, for exploitation coke-stove gas chemical products or realize that hydrogen metallurgy created prerequisite;
4, can be under the condition that the calorific value operating mode changes, reach the effect of stablizing the heating furnace working condition by regulating this device, and embody the quantification effect of implementing oxygen-enriched combusting easily, the confidence and the power that help the firm enforcement oxygen-enriched combusting of enterprise, help the promotion and application of national " Energy Management Contract " pattern of vigorously advocating, help the realization of national energy-saving and emission-reduction strategic objective.
Description of drawings
Above-mentioned only is the general introduction of technical solution of the present invention, and for can clearer understanding technological means of the present invention, the present invention is described in further detail below in conjunction with accompanying drawing and the specific embodiment.
Fig. 1 is the structural representation of the oxygen-enriched combustion-supporting device of a kind of suitable fuel gas with low heat value of the present invention.
Fig. 2 is the structural representation of inferior high combustion rate burner spout of the oxygen-enriched combustion-supporting device of a kind of suitable fuel gas with low heat value of the present invention.
The specific embodiment
See also shown in Figure 1ly, the present invention is suitable for the oxygen-enriched combustion-supporting device of fuel gas with low heat value, mainly is made up of combustion-supporting gas pipeline 1, gas pipeline 2, burner 3 and burning gallery 4.
Wherein, the inlet end of combustion-supporting gas pipeline 1 is communicated with atmosphere, oxygen enrichment generating means or other combustion-supporting gas conveying device, internal fixation has direct current/eddy flow dividing plate 11, the combustion-supporting gas pipeline is divided into direct current pipeline 12 and eddy flow pipeline 13, and direct current/rotational flow air pro rate valve 14 of regulating direct current pipeline 12 and eddy flow pipeline 13 gas flow ratios is set on combustion-supporting gas pipeline 1, combustion-supporting cyclone 15 is set in eddy flow pipeline 13.
The inlet end 21 of gas pipeline 2 is communicated with the combustion gas conveying device, and inside is provided with combustion gas cyclone 22, and combustion gas cyclone 22 can be changed end plate 24 dismountable inside that are fixed on gas pipeline 2 by combustion gas cyclone connecting rod 23, combustion gas cyclone.Combustion gas cyclone 22 of the present invention can be designed to the cyclone of different cross section diameter, different blade shape and length range, the user can select corresponding specification as required for use, and can be by the design that removably connects of connecting rod 23 and end plate 24, make the dismounting and change and the installation and maintenance of combustion gas cyclone 22 convenient, to adapt in the production process different requirements to gas flow rate.
The spout connection of the outlet side of eddy flow passage 13 and blast tube 2 and burner 3, the outlet side of direct current pipeline 12 pass the straight wall of burner 3 and connect in the burning gallery 4.
Please cooperate and consult shown in Figure 2ly, the spout of burner 3 can be designed to common specification or inferior high speed specification.The diameter range of the spout 31 of common specification is 100～300mm, and the diameter range of inferior high speed spout 32 is 50～100mm.Wherein, because inferior high speed spout 32 has dwindled bore with respect to common spout 31, improved the flow velocity of combustion gas accordingly.In addition, also can on the sidewall of burner 3, be provided with and observe or fire hole 33, be convenient to burner igniting or artificial dynamically judgement fired state.
The side of burning gallery 4 can be provided with an above smoke backflow passage 41, the low pressure backflow effect that utilizes burning gases when spraying, to produce, and the suction flue gas reduces burning fire combustion localized hyperthermia district, reduces under the oxygen enrichment situation producing NO
XPossibility.
During work, enter the combustion-supporting gas of combustion-supporting gas pipeline 1, be divided into two parts through distributing valve 14 and dividing plate 11, allocation proportion can rationally regulate and preestablish as required, and dividing plate 11 guarantees that two parts gas no longer mixes before participating in burning; The direct current combustion air partly directly enters burning gallery 4 through direct current pipeline 12; Eddy flow combustion air part under combustion-supporting cyclone 15 effects, becomes the eddy flow combustion air, enters in the spout of burner 3; Combustion gas enters gas pipeline 2, becomes the eddy flow combustion gas under the effect of combustion gas cyclone 22, and is transported in the spout of burner 3.Utilize apparatus of the present invention, realized one eddy flow combustion gas, one eddy flow combustion-supporting gas and the mixed combustion in burning gallery of another strand direct current combustion-supporting gas.
Utilize oxygen rich gas combustion-supporting, can make fuel gas with low heat value meet the requirements of ignition temperature.But in the application in practice of oxygen-enriched combusting, cause flow velocity slower, therefore under low air-fuel ratio condition, be difficult to reach completing combustion because oxygen-enriched combustion-supporting gas flow demand reduces.The present invention is by regulating eddy flow combustion-supporting gas ratio, selecting the cyclone of corresponding specification and the diameter that changes the burner spout for use, greatly scope ground, change gas flow rate accurately, make the variation of burner adaptation fuel gases calorific value and oxygen-rich concentration.After utilizing the present invention to improve the spouting velocity and disturbance ability of flue gas, under the state of low air-fuel ratio, can realize completing combustion equally.
The above; it only is preferred embodiment of the present invention; be not that the present invention is done any pro forma restriction, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drop in protection scope of the present invention.
Claims (9)
1. the oxygen-enriched combustion-supporting device of a suitable fuel gas with low heat value is characterized in that mainly being made up of combustion-supporting gas pipeline, gas pipeline, burner and burning gallery, wherein:
The combustion-supporting gas pipe interior is fixed with dividing plate, and the combustion-supporting gas pipeline is divided into direct current pipeline and eddy flow pipeline, and combustion-supporting cyclone is set in the eddy flow pipeline;
Direct current pipeline, eddy flow pipeline and gas pipeline are communicated with burning gallery by burner respectively.
2. the oxygen-enriched combustion-supporting device of a kind of suitable fuel gas with low heat value according to claim 1 is characterized in that the spout connection of described eddy flow passage and blast tube and burner, and the direct current pipeline passes the burner straight wall and connects in the burning gallery.
3. the oxygen-enriched combustion-supporting device of a kind of suitable fuel gas with low heat value according to claim 1 is characterized in that described combustion-supporting gas pipeline is provided with the distributing valve of regulating direct current pipeline and eddy flow pipeline gas flow ratio.
4. the oxygen-enriched combustion-supporting device of a kind of suitable fuel gas with low heat value according to claim 1, the nozzle diameter that it is characterized in that described burner is 50～300mm.
5. the oxygen-enriched combustion-supporting device of a kind of suitable fuel gas with low heat value according to claim 1, the nozzle diameter that it is characterized in that described burner is 50～100mm.
6. the oxygen-enriched combustion-supporting device of a kind of suitable fuel gas with low heat value according to claim 1 is characterized in that described burning gallery side also is provided with an above smoke backflow passage.
7. the oxygen-enriched combustion-supporting device of a kind of suitable fuel gas with low heat value according to claim 1 is characterized in that the sidewall of described burner is provided with observation or fire hole.
8. according to the oxygen-enriched combustion-supporting device of each described a kind of suitable fuel gas with low heat value among the claim 1-7, it is characterized in that being provided with in the described gas pipeline combustion gas cyclone.
9. the oxygen-enriched combustion-supporting device of a kind of suitable fuel gas with low heat value according to claim 8 is characterized in that described combustion gas cyclone is fixed on gas pipeline inside by connecting rod, end plate with dismountable connected mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100098114A CN102032571A (en) | 2011-01-18 | 2011-01-18 | Oxygen-enriched and combustion-supporting device suitable for low calorific value fuel gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100098114A CN102032571A (en) | 2011-01-18 | 2011-01-18 | Oxygen-enriched and combustion-supporting device suitable for low calorific value fuel gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102032571A true CN102032571A (en) | 2011-04-27 |
Family
ID=43885816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100098114A Pending CN102032571A (en) | 2011-01-18 | 2011-01-18 | Oxygen-enriched and combustion-supporting device suitable for low calorific value fuel gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102032571A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398376A (en) * | 2013-07-10 | 2013-11-20 | 中国科学技术大学 | Oxygen enriching combustor |
| CN103398379A (en) * | 2013-07-24 | 2013-11-20 | 中冶华天工程技术有限公司 | Oxygen-enriched burner |
| CN104266188A (en) * | 2014-10-16 | 2015-01-07 | 陈维汉 | Gas oxygen-enriched supporting premixed swirl-flow combustion device |
| CN105465786A (en) * | 2015-12-08 | 2016-04-06 | 上海华之邦科技股份有限公司 | Low-NOx combustor suitable for various low-heat-value/low-pressure fuel gases |
| CN106482091A (en) * | 2016-12-20 | 2017-03-08 | 许明华 | Chimney-free combustion furnace |
| CN108006640A (en) * | 2017-12-21 | 2018-05-08 | 靖江博鑫柯曼燃烧器制造有限公司 | One kind uses oxygen-enriched burner |
| CN108180477A (en) * | 2018-02-24 | 2018-06-19 | 陈绪忠 | Bispin multistage purification step-less adjustment burner and heating furnace |
| CN112594679A (en) * | 2020-12-17 | 2021-04-02 | 安徽香杨新能源科技发展股份有限公司 | Combustion system for biomass gas production |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88203589U (en) * | 1988-02-22 | 1988-09-21 | 哈尔滨市锅炉燃烧设备厂 | Multifunctional adjustable shunting oil (gas) burner |
| JPH02126012A (en) * | 1988-11-05 | 1990-05-15 | Osaka Gas Co Ltd | Gas burner with variable nozzle area |
| US5433600A (en) * | 1994-04-13 | 1995-07-18 | Industrial Technology Research Institute | Burner for the combustion of coke oven gas |
| CN2242393Y (en) * | 1995-09-11 | 1996-12-11 | 鞍山钢铁公司 | Adjustable self-stalibity flame type double rotary flow flat flame burner |
| CN2384113Y (en) * | 1999-08-13 | 2000-06-21 | 大庆石油管理局天然气公司 | Low NOx gas burner |
| CN2415265Y (en) * | 1999-11-11 | 2001-01-17 | 韩大华 | Long Flame oil and gas burner |
| CN201448842U (en) * | 2009-07-02 | 2010-05-05 | 王志强 | Self-preheating premixing combustor |
| CN201944842U (en) * | 2011-01-18 | 2011-08-24 | 鞍山普贝达科技有限公司 | Oxygen-enriched combustion-supporting device applied to fuel gas with low heating value |
-
2011
- 2011-01-18 CN CN2011100098114A patent/CN102032571A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88203589U (en) * | 1988-02-22 | 1988-09-21 | 哈尔滨市锅炉燃烧设备厂 | Multifunctional adjustable shunting oil (gas) burner |
| JPH02126012A (en) * | 1988-11-05 | 1990-05-15 | Osaka Gas Co Ltd | Gas burner with variable nozzle area |
| US5433600A (en) * | 1994-04-13 | 1995-07-18 | Industrial Technology Research Institute | Burner for the combustion of coke oven gas |
| CN2242393Y (en) * | 1995-09-11 | 1996-12-11 | 鞍山钢铁公司 | Adjustable self-stalibity flame type double rotary flow flat flame burner |
| CN2384113Y (en) * | 1999-08-13 | 2000-06-21 | 大庆石油管理局天然气公司 | Low NOx gas burner |
| CN2415265Y (en) * | 1999-11-11 | 2001-01-17 | 韩大华 | Long Flame oil and gas burner |
| CN201448842U (en) * | 2009-07-02 | 2010-05-05 | 王志强 | Self-preheating premixing combustor |
| CN201944842U (en) * | 2011-01-18 | 2011-08-24 | 鞍山普贝达科技有限公司 | Oxygen-enriched combustion-supporting device applied to fuel gas with low heating value |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398376A (en) * | 2013-07-10 | 2013-11-20 | 中国科学技术大学 | Oxygen enriching combustor |
| CN103398376B (en) * | 2013-07-10 | 2015-07-22 | 中国科学技术大学 | Oxygen enriching combustor |
| CN103398379A (en) * | 2013-07-24 | 2013-11-20 | 中冶华天工程技术有限公司 | Oxygen-enriched burner |
| CN104266188A (en) * | 2014-10-16 | 2015-01-07 | 陈维汉 | Gas oxygen-enriched supporting premixed swirl-flow combustion device |
| CN104266188B (en) * | 2014-10-16 | 2016-07-06 | 陈维汉 | Gas oxygen-enriched combustion-supporting premixed swirl combustion device |
| CN105465786A (en) * | 2015-12-08 | 2016-04-06 | 上海华之邦科技股份有限公司 | Low-NOx combustor suitable for various low-heat-value/low-pressure fuel gases |
| CN106482091A (en) * | 2016-12-20 | 2017-03-08 | 许明华 | Chimney-free combustion furnace |
| CN108006640A (en) * | 2017-12-21 | 2018-05-08 | 靖江博鑫柯曼燃烧器制造有限公司 | One kind uses oxygen-enriched burner |
| CN108006640B (en) * | 2017-12-21 | 2024-02-13 | 靖江博鑫柯曼燃烧器制造有限公司 | Multipurpose oxygen-enriched burner |
| CN108180477A (en) * | 2018-02-24 | 2018-06-19 | 陈绪忠 | Bispin multistage purification step-less adjustment burner and heating furnace |
| CN112594679A (en) * | 2020-12-17 | 2021-04-02 | 安徽香杨新能源科技发展股份有限公司 | Combustion system for biomass gas production |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102032571A (en) | Oxygen-enriched and combustion-supporting device suitable for low calorific value fuel gas | |
| CN102287819B (en) | Porous medium combustor for low-caloric-value gas fuel | |
| EP2019263A1 (en) | A pulverized coal burner with a baffle | |
| CN202066336U (en) | Oxygen-enriched combustion-supporting burner for rotary kiln | |
| CN201944851U (en) | Double-cyclone oxygen-enriched flat-flame burner | |
| CN201944842U (en) | Oxygen-enriched combustion-supporting device applied to fuel gas with low heating value | |
| CN101907295A (en) | Low-NOx combustor for combusting coal water slurry and combustion method | |
| CN201344532Y (en) | Burning torch pipe fitting for complete mixing swirl burner | |
| CN102818270B (en) | Mixed combustion gun and mixed combustion method | |
| CN103727527A (en) | High-power practical gas catalytic combustion kiln | |
| CN201288124Y (en) | Access pure oxygen combustor of glass kiln | |
| CN102261836A (en) | Oxygen-enriched combustion-supporting burner used for rotary kiln and use method thereof | |
| CN202188505U (en) | Regenerative blast-furnace gas diffuse combustor | |
| CN101428958A (en) | Glass fibre tank furnace channel oxygen combustion method | |
| CN202166054U (en) | Oxygen-rich combustor | |
| CN101381196B (en) | Fuel step adding apparatus of glass melter total oxygen combustion | |
| CN201875703U (en) | Pulverized coal burner and pulverized coal boiler | |
| CN202203980U (en) | Energy-saving combustion device adopting combustion method of water electrolysis oxyhydrogen and fuel blending | |
| CN201779650U (en) | CWS (coal water slurry) fired low nitrogen oxide combustor | |
| CN203385195U (en) | Porous medium flue gas hot blast stove capable of mixing cold air | |
| CN207555603U (en) | For the bleeding and energy saving spray gun of Industrial Stoves | |
| CN207350333U (en) | A kind of gas heat-accumulated type updraft burner | |
| CN201672511U (en) | Pulverized coal burner | |
| CN206831509U (en) | The shower nozzle of rotary kiln coal gas composite burning burner | |
| CN201212682Y (en) | Low nitrogen oxide burner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110427 |