CN101896771A - Stoker-fired boiler, a method of modernization of stoker-fired boilers and a method of elimination of uncontrolled leakages of air not taking part in the combustion process in a stoker-fired boiler - Google Patents
Stoker-fired boiler, a method of modernization of stoker-fired boilers and a method of elimination of uncontrolled leakages of air not taking part in the combustion process in a stoker-fired boiler Download PDFInfo
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- CN101896771A CN101896771A CN2008801187198A CN200880118719A CN101896771A CN 101896771 A CN101896771 A CN 101896771A CN 2008801187198 A CN2008801187198 A CN 2008801187198A CN 200880118719 A CN200880118719 A CN 200880118719A CN 101896771 A CN101896771 A CN 101896771A
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- air
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- boiler
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23H—GRATES; CLEANING OR RAKING GRATES
- F23H11/00—Travelling-grates
- F23H11/10—Travelling-grates with special provision for supply of air from below and for controlling air supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B1/00—Combustion apparatus using only lump fuel
- F23B1/16—Combustion apparatus using only lump fuel the combustion apparatus being modified according to the form of grate or other fuel support
- F23B1/22—Combustion apparatus using only lump fuel the combustion apparatus being modified according to the form of grate or other fuel support using travelling grate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B30/00—Combustion apparatus with driven means for agitating the burning fuel; Combustion apparatus with driven means for advancing the burning fuel through the combustion chamber
- F23B30/02—Combustion apparatus with driven means for agitating the burning fuel; Combustion apparatus with driven means for advancing the burning fuel through the combustion chamber with movable, e.g. vibratable, fuel-supporting surfaces; with fuel-supporting surfaces that have movable parts
- F23B30/06—Combustion apparatus with driven means for agitating the burning fuel; Combustion apparatus with driven means for advancing the burning fuel through the combustion chamber with movable, e.g. vibratable, fuel-supporting surfaces; with fuel-supporting surfaces that have movable parts with fuel supporting surfaces that are specially adapted for advancing fuel through the combustion zone
- F23B30/08—Combustion apparatus with driven means for agitating the burning fuel; Combustion apparatus with driven means for advancing the burning fuel through the combustion chamber with movable, e.g. vibratable, fuel-supporting surfaces; with fuel-supporting surfaces that have movable parts with fuel supporting surfaces that are specially adapted for advancing fuel through the combustion zone with fuel-supporting surfaces that move through the combustion zone, e.g. with chain grates
Abstract
A boiler according to the invention contains an additional air channel (9) with an inbuilt fan (10) with adjustable output. The first end (91) of the additional air channel (9) is connected with the under-stoker space (11) located outside of the wind boxes (5) of the under-stoker wind boxes system (4). The other end (9') of the additional air channel (9) is connected with either the space of the channel (6) supplying outside air to the wind boxes (5) or with the atmosphere or with the secondary air channel of the combustion chamber (2). Modernization of the existing boilers consists in installation in the described above method of an additional air channel (9) with an inbuilt fan (10). The method of elimination of uncontrolled leakages in a stoker-fired boiler consist in leading out and air, getting through air gaps, from the under-stoker space of the boiler located outside of the wind boxes (5) to the described above additional air channel (6), wherein current output of the fan (10) built into this channel is proportional to the current difference between temperature of air supplied to the wind boxes (5) and temperature of air in the additional air channel (6).
Description
Technical field
Main body of the present invention is the boiler that utilizes the firing machine coal that comprises bellows system under removable firing machine and the firing machine in the combustion zone, the method for this boiler of modernization repacking, and the method for eliminating the uncontrolled leakage of the air that has neither part nor lot in the combustion process in the boiler.
Background technology
In commercial electric power industry and heat supply industry, the general boiler that utilizes the firing machine coal that is used to produce heat, wherein solid fuel particularly burning of coal occur on the mobile mechanical stoker.Combustion chamber with secondary air passageways is arranged above this firing machine, and space under the firing machine that comprises bellows system under the firing machine with bellows is arranged below firing machine, and air is provided to the passage of bellows inside from atmosphere, it is essential on firing machine combustion process taking place.Between the operating period, in the bellows space, air pressure reaches usually near 200-500Pa at boiler.Under firing machine in the remainder in space, pressure is near the pressure in the combustion chamber, reaches usually about-30 to-50Pa.Cause the uncontrolled leakage of air-flow at the pressure gap that reveals between space and the atmosphere under bellows space, the firing machine, it is flowed through and is present in gap between these spaces, however the detecting manufacturing and can not guarantee that it seals fully of boiler.The above-mentioned space of sealing in the boiler that utilizes the firing machine coal, intention is eliminated the uncontrolled leakage that has neither part nor lot in the air in the solid fuel ignition process, is the theme of many solutions and trial.From the description of Poland Patent 183654, can know the boiler that utilizes the firing machine coal that has sealed by means of the metal membranous wall.The migration of the air-flow in the boiler that utilizes the firing machine coal also can suitably be shaped by the bellows to bellows system under the firing machine and be controlled.In the Poland Patent of application number P-355555, the example of the scheme of the structure of bellows system under the firing machine is disclosed, it reduces the ratio of unnecessary gas.
Summary of the invention
Flow in the uncontrolled of air-flow that the objective of the invention is to reduce in the boiler that utilizes the firing machine coal, this mobile meeting influences the performance of boiler negatively.
Boiler according to the present invention comprises combustion chamber with secondary air passageways, mechanical stoker movably, comprises space under the firing machine of bellows system under the firing machine with bellows, and the passage that supplies air to bellows inside.Key of the present invention is that this boiler comprises extra air duct, and it has built-in and exports adjustable fan.One end of the air duct that this is extra be positioned at firing machine under under the firing machine of bellows outsides of bellows system the space be connected.
In other embodiment according to boiler of the present invention, the other end of this additional air passage is connected with the space that extraneous air is offered the passage of the bellows of bellows system under the firing machine, perhaps is connected with atmosphere, perhaps is connected with the secondary air passageways of combustion chamber.
In another embodiment, the space of the passage that air is provided to bellows inside from atmosphere, and in the space of described additional air passage, at least one air temperature sensor is set according to boiler of the present invention.These sensors can be connected on the controller of fan of additional air passage.
Method according to a kind of modernization repacking of the present invention, be space under the described firing machine of above-mentioned boiler, it is positioned at the outside of the bellows of bellows system under the firing machine, is connected with first end of the additional air passage with built-in adjustable fan of output.
In other embodiment of this modernization method of modifying, the other end of described additional air passage is connected with the space that air is provided to the passage of the bellows of bellows system under the firing machine, perhaps is connected with atmosphere, perhaps is connected with the secondary air passageways of combustion chamber.
In another embodiment of this modernization method of modifying, the space of the passage that air is provided to bellows inside from atmosphere, and in the space of described additional air passage, at least one air temperature sensor is set.These sensors can be connected to the controller of the fan of this additional air passage.
The method that the uncontrolled air of elimination according to the present invention leaks is, air space under the firing machine of the boiler of the bellows outside that is positioned at bellows system under the firing machine is drawn, and guides to the additional air passage with the built-in fans that can change output.The current output of this fan and be fed to the temperature of air of bellows and the temperature of the air in described additional air passage between current difference proportional.
In other embodiment of the method that the uncontrolled air of described elimination leaks, be drawn out to the air of additional air passage or be supplied to the bellows of bellows system under the firing machine, perhaps further be drawn out in the atmosphere, or be supplied to the secondary air passageways of the combustion chamber of boiler.
The present invention has reduced by the gap to come in and the amount of the air that combines with combustion product gases, thereby the result who obtains is that the ratio of the unnecessary air in flue gas reduces.This makes the physical damage in flue gas reduce, and it also means the lifting of boiler performance, and is normally about 2% to 5%, the quality that technical conditions, the change of load, the burning of specifically depending on it adorned, and correct maintenance and operation.Use the nearly 10-20% of consumption of the electric power of the parts that the present invention also reduced boiler.Because the generally minimizing of the flue gas quantity of discharging from boiler, the load of air exhauster is littler, and the energy that fan consumed of described additional air passage is offset by the limited energy consumption of bellows draft fan.A useful feature of the present invention is, it is also shorter to reequip the needed time for the modernization of boiler, and the expense of this modernization repacking is lower, be equivalent to replace bellows system under the firing machine expense 10%.
Unanticipated arrives, and basic advantage of the present invention is the remarkable minimizing (20-70%) of dust emission, and its possibility that satisfies the requirement of following discharge standard to not setting up expensive electrostatic precipitator (taking off the dirt device) is wished.Same unanticipated arrives, and is using the in service of boiler of the present invention, and the discharging of carbon monoxide (CO) has reduced 40-80%.This makes can equip secondary fan to boiler, has reduced the consumption to electric power.
Description of drawings
The present invention shown in the drawings, what present is the diagrammatic vertical cross section that utilizes the boiler of firing machine coal, wherein Fig. 1 illustrates the boiler of first modification with additional air passage, and Fig. 2 illustrates the boiler of second modification with this passage, and Fig. 3 illustrates the boiler of the 3rd modification with this passage.
The specific embodiment
Typically utilize the boiler of firing machine coal to have the flue gas district that has flue gas air exhauster 1, and burner region.In burner region, combuster 2, movably mechanical stoker 3, have bellows system 4 under the firing machine of bellows 5, and the passage 6 that air is fed to bellows 5 inside from atmosphere by means of bellows draft fan 7.Combustion chamber 2 has the secondary air passageways that has fan 8 that power is provided.Boiler according to the present invention has additional air passage 9, and it has the adjustable built-in fan 10 of output.One end 9 ' of additional air passage 9 be positioned at described firing machine under under the firing machine of bellows 5 outsides of bellows system 4 space be connected, the other end 9 of additional air passage 9 " can be connected with the space of the passage 6 of the bellows 5 that extraneous air are fed to bellows system 4 under the firing machine; perhaps be connected with atmosphere, perhaps the secondary air passageways with combustion chamber 2 is connected.By the output of control fan 10, removed from firing machine lower area 11 from the right quantity of the air of uncontrolled leakage, and be directed to selected position by additional air passage 9.Can manually control the output of fan 10, but it is useful using relevant knowledge for this purpose, and described relevant knowledge refers to air themperature and the air themperature in the space of additional air passage 9 the space of the passage 6 that air is provided to bellows 5 from atmosphere.In order so to do, place an air temperature sensor (not shown in figures) at least in these places.Show then that for typically utilizing firing machine to provide the boiler of power, the difference between the temperature of the bellows air-flow in passage 6 and the temperature of the air-flow in additional air passage 9 to be no more than 5 degree what flow by passage 9 only is the air that leaks into space under the firing machine from uncontrolled.Difference on temperature reaches 5 to 10 information that provide of degree, also has the air from uncontrolled leakage in described additional air passage 9, and this leakage occurs on the degree limited portion that combustion process or combustion process no longer take place of firing machine 3.In this case, uncontrolled leakage is looked into the base section of thinking combustion chamber 2 and is taken place, and their reception has positive effect to the physical damage of flue gas.The information that provides above 10 differences of spending in temperature is to have flowed into some flue gases from combustion chamber 2 in addition in passage 9, and do not cause physical damage in flue gas.These dependences allow to realize the automation that the output of fan 10 is regulated by connecting described temperature sensor to fan governor, and are employed as controlling parameter by means of the difference between the measured temperature of these sensors.Unanticipated arrives, and when boiler has little load, when for example reaching the 10-20% of nominal load, the quantity of the air that comes from the gap is enough to carry out combustion process.In this case, when can not be with passage 6 when isolated from atmosphere is opened, bellows draft fan 7 stops only to begin to stop air to outflow from boiler for combustion process provides air.In most of the cases, elimination causes following situation by the gap from the air that flue gas stream comes: the traction naturally of chimney is enough to guarantee that suitable negative pressure is arranged combustion chamber 2, make the operation of flue gas air exhauster 1 not have purpose.Yet according to mandatory provision, the boiler operatiopn that does not have air exhauster 1 is unallowed.Solution to this problem can be (for example to arrive-80Pa) operation down, and the output that limits air exhauster 1 for-50 in combustion chamber 2 in the lower pressure value.For correct use boiler, it is highly important that, the tie point in the space of the space of passage 6 of air and additional air passage 9 is provided to bellows.If the situation of bellows 5 before certain point connects the most of air arrival that cause occurring being supplied by fan 10, then not disadvantageous to the operation of boiler, especially when said temperature difference surpasses 10 ℃, because this means the lower air-flow of oxygen content that provides other.Equally when temperature contrast surpasses 10 ℃, 5 parameters that pro influence boiler operatiopn of the bellows of the same directed last operation of air-flow.This low-intensity with combustion process in this share of firing machine is relevant, and low-intensity means in the identical time littler to the needs of oxygen.Unanticipated arrives, and by additional air passage 9 space under the firing machine 11 is connected the operation (manual or automatic) that does not need the boiler in range of application with atmosphere and changes.Space 11 is connected with the secondary air passageways of passage 6 or combustion chamber 2 under firing machine, and the interaction of air-flow especially when temperature contrast surpasses 5 ℃, changes the existing scope process of combustion process, causes needs to measure air-flow and change boiler control algolithm.Yet, by low power consumption more, to from the heat of the air-flow in space use produced economically with ecology on benefit, proved that the extra expenditure of appearance in this scheme of realization (but not to space under the firing machine 11 simpler control that is connected with atmosphere) is suitable.Same unanticipated to be to use and the invention provides other operational benefit.To be connected with space under the firing machine from first bellows that the bellows air-flow separates and allow boiler operator to control following distance: the coal ignition point is from the distance of the previous section of sliding door and firing machine structure on firing machine.Similarly, after separating with the bellows air-flow before, last inoperative bellows are connected with space under the firing machine have reduced uncontrolled leakage from the bellows space to the combustion chamber.
According to the present invention, can construct new boiler, and apace, cheaply and effectively existing boiler be carried out the modernization repacking.For example, the WE-10 type boiler that generally uses is carried out the modernization repacking needs to install additional air passage 9, and this passage has centrifugal type fan WWOax-50 (being made by Owent Olkusz), and it is equipped with the 5.5kW motor, and its rotating speed relies on Frequency Converter Control.By this fan of manual control, obtained to be fed to the average 6000m of the air-flow of boiler
3The decline of/h, wherein boiler is sent out at 30-80%.In modernization repacking, use two WWOax-50 type fans in identical fan control mode to the two firing machine boilers of WR-25 type, obtain following situation: in the loading range of 40-80%, the unnecessary gas factor in flue gas drops to about 1.4-1.7 from the 2.0-2.5 level.The temperature of the combustion product gases after boiler has descended 15 to 20 ℃, the 20-70% that descended of the dust content in these flue gases stream, and the content of carbon monoxide (CO) 40-80% that descended.
Claims (according to the modification of the 19th of treaty)
1. an elimination has neither part nor lot in the method for uncontrolled leakage of the air of the combustion process in the boiler that utilizes the firing machine coal, described boiler comprises combustion chamber (2), mechanical stoker (3) movably, with space under the firing machine (11), the passage (6) that the space comprises bellows system under the firing machine that has bellows (5) (4) and air is fed to the inside of described bellows (5) from atmosphere under the described firing machine, it is characterized in that
Air is drawn out to the additional air passage (9) with adjustable built-in fans of output (10) by space (11) under the described firing machine of described bellows (5) outside that is positioned at bellows system under the described firing machine (4), wherein the current output of this fan (10) and be fed to the temperature of air of bellows (5) and the temperature of the air in described additional air passage (9) between current difference proportional.
2. the method for the uncontrolled leakage of elimination according to claim 1 is characterized in that, the described air that is drawn out to described additional air passage (9) is supplied to the described bellows (5) of bellows system under the described firing machine (4).
3. the method for the uncontrolled leakage of elimination according to claim 1 is characterized in that, the described air that is drawn out to described additional air passage (9) further is drawn out to atmosphere.
4. the method for the uncontrolled leakage of elimination according to claim 1 is characterized in that, the described air that is drawn out to described additional air passage (9) is supplied to the described secondary air passageways of described combustion chamber (2)
5. boiler that utilizes the firing machine coal, it has the combustion chamber (2) that has secondary air passageways, mechanical stoker (3) movably, with space under the firing machine (11), the space comprises bellows system under the firing machine that has bellows (5) (4) under the described firing machine, air is fed to from atmosphere described bellows (5) inside primary air passage (6) and have output adjustable built-in fans (10) additional air passage (9), first end (9 ') of wherein said additional air passage (9) be positioned at described firing machine under under the described firing machine of described bellows (5) outsides of bellows system (4) space (11) be connected, it is characterized in that:
Second end of described additional air passage (9) (9 ") be connected with atmosphere.
6. boiler according to claim 1 is characterized in that, comprises temperature sensor, and described temperature sensor is arranged on the space of primary air passage (6) and is connected in the space of described additional air passage (9) of controller of described built-in fans (10).
7. a modernization repacking utilizes the method for the boiler of firing machine coal, described boiler comprises the combustion chamber (2) with secondary air passageways, mechanical stoker (3) movably, with space under the firing machine (11), the primary air passage (6) that the space holds bellows system under the firing machine that has bellows (5) (4) and air is fed to the inside of described bellows (5) from atmosphere under the described firing machine, be positioned at wherein that space (11) is connected with first end (9 ') with additional air passage (9) of exporting adjustable built-in fans (10) under the described firing machine of described bellows (5) outsides of bellows system under the described firing machine (4), it is characterized in that
Second end of described additional air passage (9) (9 ") be connected with atmosphere.
8. the method for modernization repacking boiler according to claim 7, it is characterized in that, in the space of the space of described primary air passage (6) and described additional air passage (9), be provided with the temperature sensor of the controller that is connected to described built-in fans (10).
Claims (16)
1. boiler that utilizes the firing machine coal, it has the combustion chamber (2) that has secondary air passageways, space (11) under mechanical stoker (3) and the firing machine movably, the space comprises bellows system under the firing machine that has bellows (5) (4) and air is fed to the passage (6) of the inside of described bellows (5) from atmosphere under the described firing machine, it is characterized in that:
Described boiler comprises the additional air passage (9) with adjustable built-in fans of output (10), first end (9 ') of wherein said additional air passage (9) be positioned at described firing machine under under the described firing machine outside the described bellows (5) of bellows system (4) space (11) be connected.
2. boiler according to claim 1 is characterized in that, the other end of described additional air passage (9) (9 ") is connected with the space of the described passage (6) of the described bellows (5) that extraneous air are fed to bellows system under the described firing machine (4).
3. boiler according to claim 1 is characterized in that, and the other end of described additional air passage (9) (9 ") be connected with atmosphere.
4. boiler according to claim 1 is characterized in that, and the other end of described additional air passage (9) (9 ") be connected with the described secondary air passageways of described combustion chamber (2).
5. according to arbitrary described boiler in the claim 1 to 4, it is characterized in that, the space that air is fed to the inner described passage (6) of described bellows (5) from atmosphere, and in the space of described additional air passage (9), be provided with at least one air temperature sensor.
6. boiler according to claim 5 is characterized in that, described air temperature sensor is connected to the controller of the described fan (10) of described additional air passage (9).
7. a modernization repacking utilizes the method for the boiler of firing machine coal, described boiler comprises combustion chamber (2) with secondary air passageways, space (11) under mechanical stoker (3) and the firing machine movably, the passage (6) that the space comprises bellows system under the firing machine that has bellows (5) (4) and air is fed to the inside of described bellows (5) from atmosphere under the described firing machine, it is characterized in that
Make that space (11) is connected with first end (9 ') with additional air passage (9) of exporting adjustable built-in fans (10) under the described firing machine of described bellows (5) outside that is positioned at bellows system under the described firing machine (4).
8. the method for modernization repacking boiler according to claim 7, it is characterized in that the other end of described additional air passage (9) (9 ") is connected with the space of the described passage (6) of the described bellows (5) that extraneous air are fed to bellows system under the described firing machine (4).
9. the method for modernization repacking boiler according to claim 7 is characterized in that, the other end (9 ") of described additional air passage (9) is connected with atmosphere.
10. the method for modernization repacking boiler according to claim 7 is characterized in that, the other end (9 ") of described additional air passage (9) is connected with the described secondary air passageways of described combustion chamber (2).
11. method according to arbitrary described modernization repacking boiler in the claim 7 to 10, it is characterized in that, the space that air is fed to the inner described passage (6) of described bellows (5) from atmosphere, and in the space of described additional air passage (9), at least one air temperature sensor is set.
12. the method for modernization repacking boiler according to claim 11 is characterized in that, described air temperature sensor is connected to the controller of the described fan (10) of described additional air passage (9).
13. an elimination has neither part nor lot in the method for uncontrolled leakage of the air of the combustion process in the boiler that utilizes the firing machine coal, described boiler comprises combustion chamber (2), space (11) under mechanical stoker (3) and the firing machine movably, the passage (6) that the space comprises bellows system under the firing machine that has bellows (5) (4) and air is fed to the inside of described bellows (5) from atmosphere under the described firing machine, it is characterized in that
Air space (11) under the firing machine of described bellows (5) outside that is positioned at bellows system under the described firing machine (4) is drawn out to the additional air passage (9) with adjustable built-in fans of output (10), wherein the current output of this fan (10) and be fed to the temperature of air of bellows (5) and the temperature of the air in described additional air passage (9) between current difference proportional.
14. the method for the uncontrolled leakage of elimination according to claim 13 is characterized in that, the described air that is drawn out to described additional air passage (9) is fed to the described bellows (5) of bellows system under the described firing machine (4).
15. the method for the uncontrolled leakage of elimination according to claim 13 is characterized in that, the described air that is drawn out to described additional air passage (9) further is drawn out to atmosphere.
16. the method for the uncontrolled leakage of elimination according to claim 13 is characterized in that, the described air that is drawn out to described additional air passage (9) is fed to the described secondary air passageways of described combustion chamber (2).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PLP383941 | 2007-12-03 | ||
| PL383941A PL383941A1 (en) | 2007-12-03 | 2007-12-03 | Stoker-fired boiler, the manner of modernization of a stoker-fired boiler and liquidation of harmful blow of air, which does not participate in combustion process in a stoker-fired boiler |
| PCT/PL2008/000092 WO2009072909A2 (en) | 2007-12-03 | 2008-12-01 | Stoker-fired boiler, a method of modernization of stoker-fired boilers and a method of elimination of uncontrolled leakages of air not taking part in the combustion process in a stoker-fired boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101896771A true CN101896771A (en) | 2010-11-24 |
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ID=40718395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008801187198A Pending CN101896771A (en) | 2007-12-03 | 2008-12-01 | Stoker-fired boiler, a method of modernization of stoker-fired boilers and a method of elimination of uncontrolled leakages of air not taking part in the combustion process in a stoker-fired boiler |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US20100307393A1 (en) |
| EP (2) | EP2461098A3 (en) |
| CN (1) | CN101896771A (en) |
| AT (1) | ATE552463T1 (en) |
| AU (1) | AU2008332014A1 (en) |
| CA (1) | CA2705730A1 (en) |
| PL (2) | PL383941A1 (en) |
| RU (1) | RU2447371C2 (en) |
| UA (1) | UA94868C2 (en) |
| WO (1) | WO2009072909A2 (en) |
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| CN107448970A (en) * | 2017-08-14 | 2017-12-08 | 山东天力节能环保工程有限公司 | Boiler room |
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| DE102010052404A1 (en) * | 2010-11-24 | 2012-05-24 | Clyde Bergemann Drycon Gmbh | Method and device for controlling combustion in a combustion boiler |
| CN104930697A (en) * | 2014-03-18 | 2015-09-23 | 凤城市百利锅炉制造有限公司 | Horizontal boiler |
| CN113803738A (en) * | 2021-09-30 | 2021-12-17 | 鄂尔多斯市昊华国泰化工有限公司 | Low-nitrogen combustion boiler with built-in tuyere circulation structure and method |
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-
2007
- 2007-12-03 PL PL383941A patent/PL383941A1/en not_active IP Right Cessation
-
2008
- 2008-12-01 US US12/734,889 patent/US20100307393A1/en not_active Abandoned
- 2008-12-01 AT AT08858195T patent/ATE552463T1/en active
- 2008-12-01 AU AU2008332014A patent/AU2008332014A1/en not_active Abandoned
- 2008-12-01 EP EP12157001.4A patent/EP2461098A3/en not_active Withdrawn
- 2008-12-01 WO PCT/PL2008/000092 patent/WO2009072909A2/en active Application Filing
- 2008-12-01 RU RU2010126547/06A patent/RU2447371C2/en not_active IP Right Cessation
- 2008-12-01 UA UAA201008013A patent/UA94868C2/en unknown
- 2008-12-01 PL PL08858195T patent/PL2217858T3/en unknown
- 2008-12-01 CN CN2008801187198A patent/CN101896771A/en active Pending
- 2008-12-01 EP EP08858195A patent/EP2217858B1/en active Active
- 2008-12-01 CA CA2705730A patent/CA2705730A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448970A (en) * | 2017-08-14 | 2017-12-08 | 山东天力节能环保工程有限公司 | Boiler room |
Also Published As
| Publication number | Publication date |
|---|---|
| PL2217858T3 (en) | 2012-09-28 |
| EP2217858A2 (en) | 2010-08-18 |
| PL383941A1 (en) | 2009-06-08 |
| EP2217858B1 (en) | 2012-04-04 |
| ATE552463T1 (en) | 2012-04-15 |
| UA94868C2 (en) | 2011-06-10 |
| AU2008332014A1 (en) | 2009-06-11 |
| US20100307393A1 (en) | 2010-12-09 |
| WO2009072909A3 (en) | 2009-08-06 |
| RU2447371C2 (en) | 2012-04-10 |
| CA2705730A1 (en) | 2009-06-11 |
| EP2461098A3 (en) | 2014-08-27 |
| EP2461098A2 (en) | 2012-06-06 |
| RU2010126547A (en) | 2012-01-10 |
| WO2009072909A2 (en) | 2009-06-11 |
| WO2009072909A4 (en) | 2009-10-15 |
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Application publication date: 20101124 |