CN202303408U - Environment-friendly high-efficiency torch gas combustion device - Google Patents
Environment-friendly high-efficiency torch gas combustion device Download PDFInfo
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- CN202303408U CN202303408U CN2011203991455U CN201120399145U CN202303408U CN 202303408 U CN202303408 U CN 202303408U CN 2011203991455 U CN2011203991455 U CN 2011203991455U CN 201120399145 U CN201120399145 U CN 201120399145U CN 202303408 U CN202303408 U CN 202303408U
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Abstract
The utility model relates to a torch gas combustion device. According to the device, a heat isolation layer and a fire resistance layer are sequentially arranged at the circumference of the inner side of a furnace case of a combustion furnace body, a hearth of the combustion furnace body is divided into a first combustion chamber and a second combustion chamber through a pattern wall, a primary torch gas distribution annular pipe is arranged inside a primary burner casing, a plurality of secondary combustion-supporting air distribution annular pipes are arranged along the circumference in a position with a certain distance from the primary burner casing, a plurality of secondary torch gas distribution annular pipes are arranged along the circumference in positions with a certain distance from the secondary combustion-supporting air distribution annular pipes, a fire passage is arranged at the end part of the first combustion chamber, and the first combustion chamber is provided with the primary burner casing, a primary combustion-supporting air inlet, an auxiliary fuel burner, a flame stabilizer and the like. The torch gas combustion device has the advantages that the combustion efficiency is ensured, the light pollution of a high-altitude torch is also effectively avoided, the maintenance is convenient, and the torch gas combustion device can be widely applied to tail gas exhaust treatment of production devices in industries of petrochemical industries, natural gas and the like.
Description
Technical field
The utility model belongs to the not recyclable combustible gas processing technology field of factory, is specifically related to a kind of novel environment friendly high-efficiency torch gas incinerator.
Background technology
Petroleum chemical industry in process of production or under accident condition such as have a power failure, cut off the water or under the shutting down state generation can't reclaim in a large number and the fuel gas that must discharge, have that gas component complicacy, tolerance excursion are big, calorific value is than characteristics such as height.And the direct emptying in existing high-altitude, torch processing mode all can not reach gratifying effect in the engineering actual moving process: the direct emptying in high-altitude directly enters atmosphere to flammable tail gas; The contaminate ambient atmosphere quality; Have potential safety hazard simultaneously: torch is handled then for through the flare tip burner that is installed in the chimney top flammable tail gas is carried out burn processing; This mode alleviates atmosphere pollution with respect to the former to some extent; But still have incomplete combustion, caloradiance is big, noise is big, fire pollutes and igniting such as is difficult at shortcoming, maintenance difficulty.To above-mentioned two kinds of many shortcomings that discharging vent gas treatment mode is existed; Chinese patent ZL02265117.9 proposes a kind of environment-friendly type exhaust emissions ground incinerator; This device is through several ground combustion gas burning and exhausting tail gas; Air mixes through discharging gas self pressure with discharging gas realizes the direct emptying of the high-temperature flue gas after the burning.This device is when handling a large amount of discharging gas, and the air capacity injection volume is not enough, and discharging gas imperfect combustion produces a large amount of carbon blacks, needs to consume a large amount of steam hydrolysis and eliminates.Device need to increase extra radiation proof noise barrier, and floor space is big, and it is big that high-temperature flue gas directly discharges caloradiance, causes secondary pollution, and the thermal efficiency is low.
Summary of the invention
Have many potential safety hazards in the prior art in order to overcome, heat utilization efficiency is low and still have secondary pollution problems, the utility model provides a kind of high-efficiency environment friendly, low heat radiation, safety, novel torch gas incinerator that the thermal efficiency is high.
Realize the technical scheme of the utility model purpose: a kind of torch gas incinerator; It comprises the incinerator body that is fixed on several saddles; The stove outer covering inside circumference of incinerator body has set gradually thermal insulation layer and flame retardant coating, is divided into first combustion chamber and second combustion chamber through tracery wall in the burner hearth of incinerator body; Quirk is offered in end in first combustion chamber;
Fixing one-level burner shell on incinerator body leading section has one-level combustion air inlet on the one-level burner shell; Auxiliary fuel burners is passed the quirk place that one-level burner shell, its end place first combustion chamber, also is provided with flame holder in the end of auxiliary fuel burners; At least one altar lamp start-up burner passes the quirk place that one-level burner shell, its end place first combustion chamber; Several one-level torch gas distribute endless tube to be arranged in one-level burner shell inside; One-level torch gas distributes endless tube (9) air inlet to stretch out the quirk place that the one-level burner casing is external, its end places first combustion chamber, distributes the end of endless tube also to be provided with one-level torch air burner at each one-level torch gas;
On the incinerator body, position, first combustion chamber; Along circumference several secondary combustion airs are set apart from one-level burner shell a distance and distribute endless tube, each secondary combustion air distributes in the endless tube, on the incinerator body, offers plurality of rows, is equally distributed a plurality of secondary combustion air spouts how much; On the incinerator body, position, first combustion chamber; Distribute endless tube a distance along circumference several secondary torch gas to be set apart from the secondary combustion air and distribute endless tube, each secondary torch gas distributes in endless tube, offer the single equally distributed a plurality of secondary torch gas blowout mouths that are how much on the incinerator body;
On the incinerator body, position, second combustion chamber, apart from tracery wall a distance explosion proof door is set; On the incinerator body, position, second combustion chamber, apart from explosion proof door a distance high-temperature flue gas outlet is set.
Aforesaid a kind of torch gas incinerator, its described incinerator body is vertical or horizontal, is shaped as toroidal or square shape.
Aforesaid a kind of torch gas incinerator, its described flame retardant coating are that the corundum brick of 250～350mm is built by laying bricks or stones by thickness, and refractoriness is greater than 1790 ℃, and sustainable use is in 1200 ℃ environment; Described thermal insulation layer is that clay or the high alumina matter insulating fire brick of 114～250mm built by laying bricks or stones by thickness; Described tracery wall is built by laying bricks or stones for square refractory brick or circular refractory brick is built by laying bricks or stones, and thickness is 250～350mm.
Aforesaid a kind of torch gas incinerator, its described altar lamp start-up burner quantity is at 1～4; Described one-level torch gas distributes endless tube and one-level torch air burner quantity at 4～16.
Aforesaid a kind of torch gas incinerator; Its described secondary combustion air distributes endless tube quantity at 1～3, and each secondary combustion air distributes in the endless tube, on the incinerator body, offers plurality of rows, is 8～20 the secondary combustion air spouts that evenly distribute how much; It is different that each arranges secondary combustion air spout oral pore footpath, identical with row's secondary combustion air spout aperture.
Aforesaid a kind of torch gas incinerator, its described secondary torch gas distribute endless tube quantity at 1～3, and each secondary torch gas distributes in endless tube, offer single 8～24 the secondary torch gas blowout mouths that evenly distribute that are how much on the incinerator body.
Aforesaid a kind of torch gas incinerator, its on the incinerator body, position, first combustion chamber, also have manhole.
The effect of the utility model is: the utility model adopts technique scheme, through auxiliary burner device is risen to uniform temperature earlier, drops into torch gas again and participates in burning.This device can satisfy torch gas disposal tolerance through the one-level torch air burner that is provided with in the one-level burner and several secondary torch gas blowout mouths that ring is located at the incinerator body, the component wide fluctuations influences the thermal shock of flame-proof thermal insulation material in the stove; And to above-mentioned two-stage torch air burner difference air distribution; Rationalization's burning; Make torch gas pyrolytic, oxidation in the combustion chamber, the fume emission after the processing is up to state standards.High-temperature flue gas after the burning is delivered to the waste heat boiler recover through the high-temperature flue gas outlet, improves the thermal efficiency.
The utility model device has following characteristics: (1) torch gas had both guaranteed efficiency of combustion in closed chamber's internal combustion, had effectively avoided high-altitude the light of a torch to pollute again; (2) the crust of the device temperature is low, and heat radiation is low; (3) low noise; (4) floor space is little; (5) easy to maintenance.The utility model can be widely used in industry production device exhaust emission treatment such as petrochemical industry, natural gas.
Description of drawings
Fig. 1 is the described a kind of torch gas incinerator sketch map of the utility model;
Among the figure: 1. the one-level combustion air enters the mouth; 2. quirk; 3. one-level burner shell; 4. altar lamp start-up burner; 5. auxiliary fuel burners; 6. peephole; 7. flame holder; 8. one-level torch air burner; 9. one-level torch gas distributes endless tube; 10. stove outer covering; 11. thermal insulation layer; 12. flame retardant coating; 13. secondary combustion air spout; 14. the secondary combustion air distributes endless tube; 15. secondary torch gas distributes endless tube; 16. secondary torch gas blowout mouth; 17. explosion proof door; 18. high-temperature flue gas outlet; 19. tracery wall; 20. manhole; 21. saddle.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the described a kind of torch gas incinerator of the utility model is further described.
Shown in 1 figure, the described a kind of torch gas incinerator of the utility model mainly comprises incinerator body, one-level burner, several altar lamp start-up burners 4, several place the one-level torch air burner 8 in the one-level burner shell 3, the secondary combustion air that ring is located at the incinerator body to distribute endless tube 14 and secondary torch gas to distribute endless tube 15, tracery wall 19, explosion proof door 17.
Wherein, the incinerator body can be vertical or horizontal, is shaped as toroidal commonly used or square shape (also can be other shapes).Stove outer covering 10 inside circumference of incinerator body have set gradually thermal insulation layer 11 and flame retardant coating 12.The incinerator body-fixed is on several passive saddles 21, and saddle 21 is processed by carbon steel.Stove outer covering 10 thickness pressing force container designing and calculating, design pressure is 0.3-0.6Mpa (g).Flame retardant coating 12 is that the corundum brick of 250～350mm is built (for example thickness is 250mm, 300mm or 350mm) by laying bricks or stones by thickness, and refractoriness is greater than 1790 ℃, sustainable use in 1200 ℃ environment, Heat stability is good.Thermal insulation layer 11 is that clay or the high alumina matter insulating fire brick of 114～250mm built (for example thickness is 114mm, 200mm or 250mm) by laying bricks or stones by thickness.Through tracery wall 19 burner hearth is divided into two combustion chambers (first combustion chamber and second combustion chamber) in the burner hearth of incinerator body, quirk 2 is offered in the end of first combustion chamber.Tracery wall 19 can be square refractory brick and builds by laying bricks or stones, also can be circular refractory brick and builds by laying bricks or stones, and thickness is 250～350mm (for example thickness is 250mm, 300mm or 350mm).The setting of tracery wall 19 makes the further rectification of high temperature gas flow, and each strand air-flow is further mixed, and realizes completing combustion.
The one-level burner is installed in the leading section of incinerator body.The one-level burner comprises the one-level burner shell 3 that is fixed on the incinerator body leading section, on one-level burner shell 3, has one-level combustion air inlet 1, on one-level burner shell 3, also has peephole 6.Auxiliary fuel burners 5 is passed quirk 2 places that one-level burner shell 3, its end place first combustion chamber, also is provided with flame holder 7 in the end of auxiliary fuel burners 5.1～4 altar lamp start-up burner 4 (for example 1,2 or 4) passes quirk 2 places that one-level burner shell 3, its end place first combustion chamber.4～16 one-level torch gas distribution endless tubes 9 (for example 4,10 or 16) are how much and are distributed on one-level burner shell 3 circumference; Each one-level torch gas distributes endless tube 9 to pass quirk 2 places that one-level burner shell 3, its end place first combustion chamber, distributes the end of endless tube 9 also to be provided with one-level torch air burner 8 at each one-level torch gas.
On the incinerator body, position, first combustion chamber; Along circumference 1～3 secondary combustion air is set apart from one-level burner a distance and distributes endless tube 14 (for example 1,2 or 3), each secondary combustion air distributes in the endless tube 14, on the incinerator body, offers plurality of rows, is 8～20 the secondary combustion air spouts 13 (for example 8,15 or 20) that evenly distribute how much.It is different that each arranges secondary combustion air spout 13 oral pores footpath, and identical with row's secondary combustion air spout 13 apertures, secondary combustion air spout 13 shapes can be toroidal commonly used or square shape, also can be other shapes.
On the incinerator body, position, first combustion chamber; Distribute endless tube 14 a distance along circumference 1～3 secondary torch gas to be set apart from the secondary combustion air and distribute endless tube 15 (for example 1,2 or 3), each secondary torch gas distributes in endless tube 15, offer single 8～24 the secondary torch gas blowout mouths 16 (for example 8,15 or 24) that evenly distribute that are how much on the incinerator body.
On the incinerator body, position, first combustion chamber, also have manhole 20.On the incinerator body, position, second combustion chamber, apart from a distance behind the tracery wall explosion proof door 17 is set.On the incinerator body, position, second combustion chamber, apart from explosion proof door 17 certain distances high-temperature flue gas outlet 18 is set.
The described a kind of torch gas incinerator course of work of the utility model is following:
1. one-level torch air burner 8 adopts multiply diffusion type gas gun; The part flare discharge gas that the incinerator battery limit (BL) is next is divided into some shallow bids and is injected in the one-level combustion-supporting air flow, is beneficial to air and mixes, and increases and the air contact area; Realize completing combustion; Ignition temperature is 1100 ℃, and under this temperature, the organic component in the flare discharge gas and other combustible components are decomposed into H fully
2O and CO
2Gas fume after burning stopped in stove 1.0 seconds.Air is accomplished with mainly relying on the pressure of discharging gas self and the burner of particular design mixing of discharging gas.Low in order to prevent torch gas to press, mix flare burner extinguishes operating mode, and this device is provided with at least one altar lamp start-up burner 4.
2. in the middle part of the high-temperature flue gas entering burner hearth that burning produces, mix with the secondary combustion air of secondary combustion air spout 13.The secondary combustion air makes the organic component secondary high-temperature oxydation in the high-temperature flue gas decompose on the one hand; The secondary torch gas firing required air of one side generator secondary torch gas blowout mouth 16; This position ignition temperature is 1000 ℃; Gas fume after burning stopped in stove 1.0 seconds, had avoided the generation of NOx.The secondary combustion air spout 13 and the secondary torch gas blowout mouth 16 of design make high-temperature flue gas evenly mix with secondary combustion air, secondary torch gas, guarantee that burning fully.
The utility model adopts the response of two-stage accident emergency; When detonation takes place greatly because of fluctuations such as organic component, pressure in torch gas in the burner hearth; Pressure in the burner hearth fluctuates thereupon; The high pressure flue gas is pressure release from explosion proof door 17 at first, thereby stablizes air-flow in the burner hearth, reduces the impact of gas stream in the stove to device flame retardant coating 12; If pressure in the burner hearth changes when huge; Security for assurance equipment periphery personnel, equipment; Anti-locking apparatus is because of serious accidents such as pressure fluctuation is revealed greatly, blasts, and crust of the device 10 pressing force container designing and calculating, design pressure are 0.3-0.6Mpa (g).
The utility model device can press big young pathbreaker's torch gas to send into two combustion chambers of incinerator respectively according to torch gas; Infeed the required combustion-supporting air quantity of torch gas firing respectively, rationalization's burning guarantees combustion efficiency; Make the torch gas firing more stable, the device security of operation; The utility model heat utilization efficiency is high, energy-conserving and environment-protective, and operating cost is low, and operation is simple and feasible, realized smokeless, the end noise and the low heat radiation of torch gas discharging burn processing, the pollution of no high-altitude the light of a torch, floor space is little, and is easy to maintenance.This device is provided with multistage low pressure, reconciles than burner greatly, satisfies load operate as normal in 10%～140% scope, guarantees that torch gas firing efficient is more than 99.99%.
Claims (7)
1. torch gas incinerator; It is characterized in that: this device comprises the incinerator body that is fixed on several saddles (21); The stove outer covering of incinerator body (10) inside circumference has set gradually thermal insulation layer (11) and flame retardant coating (12), is divided into first combustion chamber and second combustion chamber through tracery wall (19) in the burner hearth of incinerator body; Offer quirk (2) in the end of first combustion chamber;
Fixing one-level burner shell (3) on incinerator body leading section has one-level combustion air inlet (1) on the one-level burner shell (3); Auxiliary fuel burners (5) is passed one-level burner shell (3), its end places the quirk (2) of first combustion chamber to locate, and also is provided with flame holder (7) in the end of auxiliary fuel burners (5); At least one altar lamp start-up burner (4) passes one-level burner shell (3), its end places the quirk (2) of first combustion chamber to locate; Several one-level torch gas distribute endless tube (9) to be arranged in one-level burner shell (3) inside; One-level torch gas distribution endless tube (9) air inlet stretches out outside the one-level burner shell (3), its end places the quirk (2) of first combustion chamber to locate, and distributes the end of endless tube (9) also to be provided with one-level torch air burner (8) at each one-level torch gas;
On the incinerator body, position, first combustion chamber; Along circumference several secondary combustion airs are set apart from one-level burner shell (3) a distance and distribute endless tube (14), each secondary combustion air distributes in the endless tube (14), on the incinerator body, offers plurality of rows, is equally distributed a plurality of secondary combustion air spouts (13) how much; On the incinerator body, position, first combustion chamber; Distribute endless tube (14) a distance along circumference several secondary torch gas to be set apart from the secondary combustion air and distribute endless tube (15), each secondary torch gas distributes in endless tube (15), offer the single equally distributed a plurality of secondary torch gas blowout mouths (16) that are how much on the incinerator body;
On the incinerator body, position, second combustion chamber, apart from tracery wall (19) a distance explosion proof door (17) is set; On the incinerator body, position, second combustion chamber, apart from explosion proof door (17) a distance high-temperature flue gas outlet (18) is set.
2. a kind of torch gas incinerator according to claim 1, it is characterized in that: described incinerator body is vertical or horizontal, is shaped as toroidal or square shape.
3. a kind of torch gas incinerator according to claim 1 is characterized in that: described flame retardant coating (12) is that the corundum brick of 250～350mm is built by laying bricks or stones by thickness; Described thermal insulation layer (11) is that clay or the high alumina matter insulating fire brick of 114～250mm built by laying bricks or stones by thickness; Described tracery wall (19) is built by laying bricks or stones for square refractory brick or circular refractory brick is built by laying bricks or stones, and thickness is 250～350mm.
4. a kind of torch gas incinerator according to claim 1 is characterized in that: described altar lamp start-up burner (4) quantity is at 1～4; Described one-level torch gas distributes endless tube (9) and one-level torch air burner (8) quantity at 4～16.
5. a kind of torch gas incinerator according to claim 1; It is characterized in that: described secondary combustion air distributes endless tube (14) quantity at 1～3, and each secondary combustion air distributes in the endless tube (14), on the incinerator body, offers plurality of rows, is 8～20 the secondary combustion air spouts (13) that evenly distribute how much; It is different that each arranges secondary combustion air spout (13) oral pore footpath, identical with row's secondary combustion air spout (13) aperture.
6. a kind of torch gas incinerator according to claim 1; It is characterized in that: described secondary torch gas distributes endless tube (15) quantity at 1～3, and each secondary torch gas distributes in endless tube (15), offer single 8～24 the secondary torch gas blowout mouths (16) that evenly distribute that are how much on the incinerator body.
7. a kind of torch gas incinerator according to claim 1 is characterized in that: on the incinerator body, position, first combustion chamber, also have manhole (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203991455U CN202303408U (en) | 2011-10-19 | 2011-10-19 | Environment-friendly high-efficiency torch gas combustion device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203991455U CN202303408U (en) | 2011-10-19 | 2011-10-19 | Environment-friendly high-efficiency torch gas combustion device |
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| CN202303408U true CN202303408U (en) | 2012-07-04 |
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| CN2011203991455U Expired - Lifetime CN202303408U (en) | 2011-10-19 | 2011-10-19 | Environment-friendly high-efficiency torch gas combustion device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798129A (en) * | 2012-09-05 | 2012-11-28 | 洛阳瑞昌石油化工设备有限公司 | Efficient thermal oxidation furnace for low afterburning-amount smoke constant-speed grading reaction |
| CN103196125A (en) * | 2013-04-16 | 2013-07-10 | 四川川润动力设备有限公司 | Waste heat boiler utilizing tail gas of nickel smelting system |
| CN103471108A (en) * | 2013-07-22 | 2013-12-25 | 北京航天动力研究所 | Nitrous oxide (N2O) burner |
| CN103528077A (en) * | 2013-10-30 | 2014-01-22 | 天津市化工设计院 | Tail gas combustion furnace capable of manufacturing sixty thousand tons of carbon black annually |
| CN104006394A (en) * | 2014-06-06 | 2014-08-27 | 南通海鹰机电集团有限公司 | Blast furnace gas burning assisting device |
| CN105953241A (en) * | 2016-05-30 | 2016-09-21 | 江苏沃尔特环保有限公司 | Efficient combusting inner combustion type methane incineration torch |
| CN105953242A (en) * | 2016-05-30 | 2016-09-21 | 江苏沃尔特环保有限公司 | Inner combustion type methane incineration torch |
| CN107270310A (en) * | 2017-07-27 | 2017-10-20 | 常州综研加热炉有限公司 | Burn heating furnace in Verticle gas organic heat carrier bottom |
| CN109140467A (en) * | 2018-09-05 | 2019-01-04 | 武汉凯比思电力设备有限公司 | A kind of foul smell burning torch |
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2011
- 2011-10-19 CN CN2011203991455U patent/CN202303408U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798129B (en) * | 2012-09-05 | 2014-12-24 | 洛阳瑞昌石油化工设备有限公司 | Efficient thermal oxidation furnace for low afterburning-amount smoke constant-speed grading reaction |
| CN102798129A (en) * | 2012-09-05 | 2012-11-28 | 洛阳瑞昌石油化工设备有限公司 | Efficient thermal oxidation furnace for low afterburning-amount smoke constant-speed grading reaction |
| CN103196125A (en) * | 2013-04-16 | 2013-07-10 | 四川川润动力设备有限公司 | Waste heat boiler utilizing tail gas of nickel smelting system |
| CN103471108A (en) * | 2013-07-22 | 2013-12-25 | 北京航天动力研究所 | Nitrous oxide (N2O) burner |
| CN103471108B (en) * | 2013-07-22 | 2016-08-31 | 北京航天动力研究所 | Laughing gas burner |
| CN103528077B (en) * | 2013-10-30 | 2016-06-29 | 天津市化工设计院 | Produce 60000 tons of production of carbon black tail-gas combustion stoves per year |
| CN103528077A (en) * | 2013-10-30 | 2014-01-22 | 天津市化工设计院 | Tail gas combustion furnace capable of manufacturing sixty thousand tons of carbon black annually |
| CN104006394B (en) * | 2014-06-06 | 2016-05-25 | 南通海鹰机电集团有限公司 | A kind of blast furnace gas companion burns device |
| CN104006394A (en) * | 2014-06-06 | 2014-08-27 | 南通海鹰机电集团有限公司 | Blast furnace gas burning assisting device |
| CN105953241A (en) * | 2016-05-30 | 2016-09-21 | 江苏沃尔特环保有限公司 | Efficient combusting inner combustion type methane incineration torch |
| CN105953242A (en) * | 2016-05-30 | 2016-09-21 | 江苏沃尔特环保有限公司 | Inner combustion type methane incineration torch |
| CN107270310A (en) * | 2017-07-27 | 2017-10-20 | 常州综研加热炉有限公司 | Burn heating furnace in Verticle gas organic heat carrier bottom |
| CN109140467A (en) * | 2018-09-05 | 2019-01-04 | 武汉凯比思电力设备有限公司 | A kind of foul smell burning torch |
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Effective date of registration: 20170119 Address after: 100076 Beijing, Fengtai District, South Road, No. 1, Patentee after: Beijing Aerospace Petrochemical Technology and Equipment Engineering Corporation Address before: 100076 Beijing, Fengtai District, South Road, No. 1, Patentee before: Beijing Aerospace Propulsion Institute |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170321 Address after: 100076 Beijing, Fengtai District, South Road, No. 1, Patentee after: Beijing wing wing Technology Co., Ltd. Address before: 100076 Beijing, Fengtai District, South Road, No. 1, Patentee before: Beijing Aerospace Petrochemical Technology and Equipment Engineering Corporation |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100076 Beijing, Fengtai District, South Road, No. 1, Patentee after: Beijing aviate energy saving and Environmental Protection Technology Co., Ltd. Address before: 100076 Beijing, Fengtai District, South Road, No. 1, Patentee before: Beijing wing wing Technology Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |