EP0690263B1 - Verfahren zum Betrieb einer Feuerungsanlage - Google Patents
Verfahren zum Betrieb einer Feuerungsanlage Download PDFInfo
- Publication number
- EP0690263B1 EP0690263B1 EP95810376A EP95810376A EP0690263B1 EP 0690263 B1 EP0690263 B1 EP 0690263B1 EP 95810376 A EP95810376 A EP 95810376A EP 95810376 A EP95810376 A EP 95810376A EP 0690263 B1 EP0690263 B1 EP 0690263B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- combustion
- combustion stage
- stage
- fuel
- air
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C6/00—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
- F23C6/04—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
- F23D17/002—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel gaseous or liquid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2201/00—Staged combustion
- F23C2201/10—Furnace staging
- F23C2201/102—Furnace staging in horizontal direction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2201/00—Staged combustion
- F23C2201/30—Staged fuel supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
- F23C2900/06041—Staged supply of oxidant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
- F23C2900/07002—Premix burners with air inlet slots obtained between offset curved wall surfaces, e.g. double cone burners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
- F23C2900/09002—Specific devices inducing or forcing flue gas recirculation
Definitions
- the present invention relates to a method according to the preamble of claim 1. It also concerns a furnace to carry out the procedure.
- the fuel is used in conventional combustion plants injected into a combustion chamber via a nozzle and under there Supply of combustion air burned. Basically is the operation of such combustion plants with a gaseous one and / or liquid fuel possible.
- UHC unsaturated coal-water substances
- the invention seeks to remedy this.
- the invention how it is characterized in the claims, the task lies on the basis of a process and a firing system of type mentioned the pollutant emissions, in particular to minimize this as far as NOx emissions are concerned both when using a liquid fuel, a gaseous Fuel, as well as with a mixed operation named fuels.
- the underlying idea of the invention differs from the classic principles in that the grading is exclusive in the excess air area by adding twice the fuel and is carried out with recirculated flue gas.
- the first stage is the combustion air via a heat exchanger an aerodynamically stabilized premix burner fed.
- the combustion air can be preheated to approx. 400 ° C, which at the combustion of oil to a very good pre-evaporation leads.
- the combustion air ratio in this so-called Lean level is about 2.1, corresponding to about 11% residual oxygen, whereby at flame temperatures of approx. 1300 ° C the NOx emissions, in the atmospheric case, are below 1 vppm.
- the main advantage of the invention is that that the arrangement of the injection openings of the fuel / flue gas mixture a timing offset of the ignition control in the combustion chamber and thus the oxygen content influence during the burnout, in such a way that with optimal Trim the system the expected NOx emissions, with complete burnout, lie between 5-8 vppm. To Today's knowledge marks this value theoretically lower limit for near stoichiometric combustion fossil fuels.
- Another advantage of the invention is that the combustion air of the first stage calorically conditioned Flue gas can be supplied to the preheating temperature to influence and on the other hand the residual oxygen content If necessary, continue to lower after the second stage to be able to.
- Fig. 1 shows a boiler system, which in a lean stage 1 and a near-stoichiometric level 2 is divided.
- the lean stage 1 essentially consists of a premix burner 100 with a downstream combustion chamber 122, in which one Flame temperature of approx. 1300 ° C prevails.
- the premix burner 100 comes with a liquid 112 and / or gaseous Fuel 113 operated.
- the combustion air 115 for the Premix burner 100 is a mixture 6 that consists of Fresh air 3 and from recirculated, calorically conditioned Flue gas 4 is composed.
- the degree of mixing is on the air side maintained by a controllable throttle valve 7, this air 3 unconditioned, that is at ambient temperature arises.
- the flue gas 4 comes from a flue gas distributor 8, of the flue gases 9 from the near stoichiometric Level 2 comes. These smoke gases 9 fall with one Temperature of about 300 ° C and they are mentioned in the Flue gas distributor 8 through a heat exchange system 10 to approx. Cooled down to 260 ° C. This cooled smoke 4 and the Fresh air 3 is mixed upstream of the premix burner 100 and compressed in a compressor 11 acting there, the temperature of this compressed air / flue gas mixture is approx. 260 ° C. This mixture is then 6 by another induced by the wall of the combustion chamber 122 Heat exchange symbolized by arrow 16 is further processed, calorically, in such a way that the combustion air 115 for the premix burner 100 at approx.
- annular chamber 12 Located on the outflow side of the combustion chamber 122 there is an annular chamber 12, which is already close to stoichiometric Level 2 is heard. In this annular chamber 12 flow slightly cooled hot gases from lean stage 1, which with Combustion air 115 is operated at approximately 11% 02, whereby NOx emissions at a flame temperature of approx. 1300 ° C in the atmospheric case are below 1 vppm. Furthermore is this annular chamber 12 with a number of injection holes 13 perforated through which a fuel / flue gas mixture 14 flows in. This mixture 14 consists of a portion Flue gas 4 from the flue gas distributor 8 and from another Share of fuel 15, which is preferably a gaseous fuel is.
- the flue gases 9 After leaving of the boiler furnace 17, the flue gases 9 still have one Temperature of about 300 ° C, part of which, as already explained above, introduced into the flue gas distributor 8 become.
- the non-branched flue gases 18 are via a Blow off chimney 19 at the lowest temperature.
- the expected NOx emissions are between 5-8 vppm, which according to the current state of knowledge is a lower one Limit for near-stoichiometric combustion of fossil fuels Represents fuels.
- FIG. 2 The following is the description of FIG. 2 as needed referred to the remaining figures 3-5.
- the premix burner 100 consists of two hollow ones conical partial bodies 101, 102 which are offset from one another are nested.
- the transfer of the respective Center axis or longitudinal axis of symmetry 201b, 202b of the conical Partial body 101, 102 creates each other on both sides, in mirror image arrangement, each with a tangential air inlet slot 119, 120 free (Fig. 3-5), through which the Combustion air 115 in the interior of the premix burner 100, i.e. flows into the cone cavity 114.
- the cone shape of the one shown Partial body 101, 102 has a flow direction certain fixed angle.
- the partial body 101, 102 in the direction of flow have an increasing or decreasing taper similar to a trumpet or Tulip.
- the latter two Shapes are not included in the drawing as they are for the expert can be easily understood.
- the two tapered partial bodies 101, 102 each have a cylindrical Initial part 101a, 102a, which also, analogous to the tapered Partial bodies 101, 102, offset from one another, so that the tangential air inlet slots 119, 120 via the entire length of the premix burner 100 are present.
- a nozzle 103 is accommodated in the cylindrical starting part, the injection 104 of approximately the narrowest cross section that formed by the tapered body 101, 102 Cone cavity 114 coincides.
- this nozzle 103 depends on the given Parameters of the respective premix burner 100.
- the premix burner can be purely conical, i.e. without cylindrical starting parts 101a, 102a.
- the conical partial bodies 101, 102 each have one Fuel line 108, 109 on which along the tangential Entry slots 119, 120 arranged and with injection openings 117 are provided, by which preferably a gaseous fuel 113 into the one flowing through there Combustion air 115 is injected, as shown by arrows 116 want to symbolize.
- These fuel lines 108, 109 are preferably at the latest at the end of the tangential inflow, before entering the cone cavity 114, placed, this to get an optimal air / fuel mixture.
- the outlet opening of the premix burner is on the combustion chamber side 122 100 into a front wall 110, in which a number Bores 110a are present.
- the latter occur in function when needed, and ensure that dilution air or cooling air 110b the front part of the combustion chamber 122 is fed.
- this air supply ensures flame stabilization at the outlet of the premix burner 100. This flame stabilization becomes important when it is is about the compactness of the flame due to a radial To support flattening.
- Fuel is a liquid fuel 112, which is enriched at most with a recirculated exhaust gas can be. This fuel 112 is under one acute angle injected into the cone cavity 114.
- the Nozzle 103 From the Nozzle 103 thus forms a conical fuel profile 105, the rotating combustion air flowing in tangentially 115 is enclosed. In the axial direction the concentration of fuel 112 continuously through the incoming combustion air 115 for optimal mixing reduced. If the premix burner 100 has a gaseous one Operated fuel 113, this is preferably done via opening nozzles 117, the formation of this Fuel / air mixture directly at the end of the air inlet slots 119, 120 comes about. When injecting the Fuel 112 through the nozzle 103 is in the area of the vortex burst, thus in the area of the backflow zone 106 at the end of the premix burner 100, the optimal, homogeneous fuel concentration reached across the cross section. The ignition takes place at the top of the backflow zone 106.
- the tapered Partial body 101, 102 with respect to the cone angle and width of the Tangential air inlet slots 119, 120 are narrow limits to adhere to the desired flow field of the combustion air 115 with the flow zone 106 at the exit of the Premix burner 100 can adjust.
- a reduction in the cross-section of the tangential Air inlet slots 119, 120 continue the backflow zone 106 upstream, which then causes the mixture comes to ignition earlier.
- the backflow zone 106 once fixed is positionally stable is because the swirl number increases in the direction of flow in the area the conical shape of the premix burner 100.
- the axial speed can pass through within the premix burner 100 a corresponding supply, not shown, of an axial Change the combustion air flow.
- the construction of the premix burner 100 is also an excellent choice Size of the tangential air inlet slots 119, 120 to change, without changing the length of the premix burner 100 recorded a relatively large operational range can be.
- the Baffles 121a, 121b have a flow initiation function these, according to their length, the respective End of the tapered partial body 101, 102 in the direction of flow extend towards the combustion air 115.
- the Channeling the combustion air 115 into the cone cavity 114 can by opening or closing the guide plates 121a, 121b by one in the area of the entry of this channel into the Cone cavity 114 placed pivot point 123 can be optimized, this is particularly necessary if the original gap size the tangential air inlet slots 119, 120 changed becomes.
- these can be dynamic arrangements can also be provided statically, as required Baffles are an integral part with the tapered partial bodies 101, 102 form.
- the premix burner can also be used 100 can also be operated without baffles, or others can Aids for this are provided.
Description
- Fig. 1
- eine Kesselanlage für eine gestufte Verbrennung,
- Fig. 2
- einen Vormischbrenner in der Ausführung als "Doppelkegelbrenner" in perspektivischer Darstellung, entsprechend aufgeschnitten und
- Fig. 3-5
- entsprechende Schnitte durch verschiedene Ebenen des Vormischbrenners gemäss Fig. 2.
- 1
- Erste Verbrennungsstufe, Magerstufe
- 2
- Zweite Verbrennnungsstufe, nahstöchiometrische Stufe
- 3
- Luft
- 4
- Rauchgas konditioniert
- 6
- Luft/Rauchgas-Gemisch
- 7
- Drosselklappe
- 8
- Rauchgasverteiler
- 9
- Rauchgase aus Stufe 2
- 10
- Wärmetauscher
- 11
- Verdichter
- 12
- Ringkammer
- 13
- Eindüsungslöcher
- 14
- Brennstoff/Rauchgas-Gemisch
- 15
- Brennstoff
- 16
- Wärmetauscher
- 17
- Kesselfeuerraum
- 18
- Rauchgase Kamin
- 19
- Kamin
- 100
- Brenner
- 101, 102
- Teilkörper
- 101a, 102a
- Zylindrische Angangsteile
- 101b, 102b
- Längssymmetrieachsen
- 103
- Brennstoffdüse
- 104
- Brennstoffeindüsung
- 105
- Brennstoffeindüsungsprofil
- 106
- Rückströmzone (Vortex Breakdown)
- 107
- Flammenfront
- 108, 109
- Brennstoffleitungen
- 110
- Frontwand
- 110a
- Luftbohrungen
- 110b
- Kühlluft
- 112
- Flüssiger Brennstoff
- 113
- Gasförmiger Brennstoff
- 114
- Kegelhohlraum
- 115
- Verbrennungsluft
- 116
- Brennstoff-Eindüsung
- 117
- Brennstoffdüsen
- 119, 120
- Tangentiale Lufteintrittsschlitze
- 121a, 121b
- Leitbleche
- 122
- Brennraum
- 123
- Drehpunkt der Leitbleche
Claims (9)
- Verfahren zum Betrieb einer Feuerungsanlage, welche im wesentlichen aus einer ersten mit einem Brenner betreibbaren Verbrennungsstufe und einer dieser nachgeschalteten zweiten Verbrennungsstufe besteht, wobei als Verbrennungsluft (115) für die erste Verbrennungsstufe (1) ein Gemisch (6) aus Luft (3) und rückgeführtem Rauchgas (4) in den Brenner (100) einströmt, dadurch gekennzeichnet, dass die Heissgase dieser ersten Verbrennungsstufe (1) vor Eintritt in die zweite Verbrennungsstufe (2) durch Wärmeaustausch abgekühlt werden, dass kopfseitig der zweiten Verbrennungsstufe (2) in die Heissgase ein Gemisch (14) aus Brennstoff (15) und rückgeführtem Rauchgas (4) eingegeben wird, und dass die Verbrennung in dieser zweiten Verbrennungsstufe (2) durch Selbstzündung ausgelöst wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die rückgeführten Rauchgase (4) für die erste und zweite Verbrennungsstufe (1, 2) vor deren Zumischung mit einem anderen Medium (3, 15) kalorisch moderiert werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die erste Verbrennungsstufe (1) als Magerstufe mit einem Sauerstoffgehalt von 9-13% betrieben wird, und dass die zweite Verbrennungsstufe (2) als nahstöchiometrische Stufe mit einem Sauerstoffgehalt von 2-4% betrieben wird.
- Feuerungsanlage zur Durchführung des Verfahrens nach Anspruch 1, wobei die Feuerungsanlage im wesentlichen aus einer ersten mit einem Brenner betreibbaren Verbrennungsstufe und einer nachgeschalteten zweiten Verbrennnungsstufe besteht und welche Feuerungsanlage mit Mitteln zur Rückführung einer Menge Rauchgas (9) aus der zweiten Verbrennungsstufe (2) in eine Verbrennungsluft (3) versehen ist, dadurch gekennzeichnet, dass eine Wand der ersten Verbrennungstufe als Wärmetauscher zwischen dem Heissgas der ersten Verbrennungsstufe und der Verbrennungsluft (6) ausgebildet ist, dass stromab der ersten Verbrennungsstufe (1) kopfseitig der zweiten Verbrennungsstufe (2) eine Ringkammer (12) angeordnet ist, dass die Wand der Ringkammer (12) Oeffnungen (13) für die Eindüsung eines Gemisches (14) aus rückgeführtem Rauchgas (4) und Brennstoff (15) aufweist, und dass der Brenner (100) mit einer verdichteten Verbrennungsluft (115) betrieben wird.
- Feuerungsanlage nach Anspruch 4, dadurch gekennzeichnet, dass der Brenner (100) aus mindestens zwei hohlen, kegelförmigen, in Strömungsrichtung ineinandergeschachtelten Teilkörpern (101, 102) besteht, deren jeweilige Längssymmetrieachsen (lOlb, 102b) gegeneinander versetzt verlaufen, dass die benachbarten Wandungen der Teilkörper (101, 102) in deren Längserstreckung tangentiale Kanäle (119, 120) für einen Verbrennungsluftstrom (115) bilden, dass im von den Teilkörpern (101, 102) gebildeten Kegelhohlraum (114) mindestens eine Brennstoffdüse (103) vorhanden ist.
- Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass im Bereich der tangentialen Kanäle (119, 120) in deren Längserstreckung weitere Brennstoffdüsen (117) angeordnet sind.
- Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass sich die Teilkörper (101, 102) in Strömungsrichtung unter einem festen Winkel kegelig erweitern.
- Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Teilkörper (101, 102) in Strömungsrichtung eine zunehmende Kegelneigung aufweisen.
- Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Teilkörper (101, 102) in Strömungsrichtung eine abnehmende Kegelneigung aufweisen.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4422535 | 1994-06-28 | ||
DE4422535A DE4422535A1 (de) | 1994-06-28 | 1994-06-28 | Verfahren zum Betrieb einer Feuerungsanlage |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0690263A2 EP0690263A2 (de) | 1996-01-03 |
EP0690263A3 EP0690263A3 (de) | 1996-07-17 |
EP0690263B1 true EP0690263B1 (de) | 2000-03-01 |
Family
ID=6521662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95810376A Expired - Lifetime EP0690263B1 (de) | 1994-06-28 | 1995-06-08 | Verfahren zum Betrieb einer Feuerungsanlage |
Country Status (4)
Country | Link |
---|---|
US (1) | US5545032A (de) |
EP (1) | EP0690263B1 (de) |
JP (1) | JPH08166108A (de) |
DE (2) | DE4422535A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109595548A (zh) * | 2018-12-04 | 2019-04-09 | 清华大学 | 浓淡返混式旋流煤粉燃烧器 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9425691D0 (en) * | 1994-12-20 | 1995-02-22 | Boc Group Plc | A combustion apparatus |
DE19542644B4 (de) * | 1995-11-17 | 2008-12-11 | Alstom | Vormischverbrennung |
ATE198788T1 (de) * | 1997-03-18 | 2001-02-15 | Alstom Power Schweiz Ag | Verfahren zum betrieb eines drallstabilisierten brenners sowie brenner zur durchführung des verfahrens |
EP1262714A1 (de) | 2001-06-01 | 2002-12-04 | ALSTOM (Switzerland) Ltd | Brenner mit Abgasrückführung |
US7074033B2 (en) * | 2003-03-22 | 2006-07-11 | David Lloyd Neary | Partially-open fired heater cycle providing high thermal efficiencies and ultra-low emissions |
DE102006000174B9 (de) * | 2006-04-13 | 2009-04-16 | Honeywell Technologies Sarl | Öl-Vormischbrenner und Betriebsverfahren dafür |
WO2015199690A1 (en) * | 2014-06-26 | 2015-12-30 | Siemens Energy, Inc. | Axial stage combustion system with exhaust gas recirculation |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4395223A (en) * | 1978-06-09 | 1983-07-26 | Hitachi Shipbuilding & Engineering Co., Ltd. | Multi-stage combustion method for inhibiting formation of nitrogen oxides |
GB2116308B (en) * | 1982-03-08 | 1985-11-13 | Westinghouse Electric Corp | Improved low-nox, rich-lean combustor |
DE3545524C2 (de) * | 1985-12-20 | 1996-02-29 | Siemens Ag | Mehrstufenbrennkammer für die Verbrennung von stickstoffhaltigem Gas mit verringerter NO¶x¶-Emission und Verfahren zu ihrem Betrieb |
DE3707773C2 (de) * | 1987-03-11 | 1996-09-05 | Bbc Brown Boveri & Cie | Einrichtung zur Prozesswärmeerzeugung |
AT391185B (de) * | 1988-02-08 | 1990-08-27 | Vaillant Gmbh | Einrichtung zur stufenweisen verbrennung eines brennstoff-luftgemisches |
CH678568A5 (de) * | 1989-03-15 | 1991-09-30 | Asea Brown Boveri | |
CH679692A5 (de) * | 1989-04-24 | 1992-03-31 | Asea Brown Boveri | |
CH680816A5 (de) * | 1989-04-27 | 1992-11-13 | Asea Brown Boveri | |
DE4034008A1 (de) * | 1989-11-07 | 1991-05-08 | Siemens Ag | Zwei- oder mehrstufige kesselfeuerung mit geringer, no(pfeil abwaerts)x(pfeil abwaerts)-emission und entsprechende verfahren |
US5201650A (en) * | 1992-04-09 | 1993-04-13 | Shell Oil Company | Premixed/high-velocity fuel jet low no burner |
DE4242003A1 (de) * | 1992-12-12 | 1994-06-16 | Abb Research Ltd | Prozesswärmeerzeuger |
DE4320212A1 (de) * | 1993-06-18 | 1994-12-22 | Abb Research Ltd | Feuerungsanlage |
-
1994
- 1994-06-28 DE DE4422535A patent/DE4422535A1/de not_active Withdrawn
-
1995
- 1995-05-11 US US08/439,241 patent/US5545032A/en not_active Expired - Fee Related
- 1995-06-08 DE DE59507869T patent/DE59507869D1/de not_active Expired - Fee Related
- 1995-06-08 EP EP95810376A patent/EP0690263B1/de not_active Expired - Lifetime
- 1995-06-27 JP JP7161251A patent/JPH08166108A/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109595548A (zh) * | 2018-12-04 | 2019-04-09 | 清华大学 | 浓淡返混式旋流煤粉燃烧器 |
Also Published As
Publication number | Publication date |
---|---|
JPH08166108A (ja) | 1996-06-25 |
DE59507869D1 (de) | 2000-04-06 |
EP0690263A3 (de) | 1996-07-17 |
US5545032A (en) | 1996-08-13 |
DE4422535A1 (de) | 1996-01-04 |
EP0690263A2 (de) | 1996-01-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69828916T2 (de) | Emissionsarmes Verbrennungssystem für Gasturbinentriebwerke | |
EP0571782B1 (de) | Verfahren zum Betrieb einer Brennkammer einer Gasturbine | |
EP0436113B1 (de) | Verfahren zum Betrieb einer Feuerungsanlage | |
EP0503319B1 (de) | Brenner für eine Vormischverbrennung eines flüssigen und/oder gasförmigen Brennstoffes | |
EP0694740A2 (de) | Brennkammer | |
EP0777081B1 (de) | Vormischbrenner | |
EP0718561B1 (de) | Brennkammer | |
DE3432971A1 (de) | Verfahren zum liefern von kraftstoff fuer einen gasturbinen-combustor | |
EP0392158B1 (de) | Verfahren zum Betrieb einer Feuerungsanlage mit fossilen Brennstoffen | |
EP0724114A2 (de) | Brenner | |
EP0394911B1 (de) | Feuerungsanlage | |
EP0690263B1 (de) | Verfahren zum Betrieb einer Feuerungsanlage | |
EP0394800A1 (de) | Vormischbrenner für die Heissgaserzeugung | |
EP1754937B1 (de) | Brennkopf und Verfahren zur Verbrennung von Brennstoff | |
EP0751351A1 (de) | Brennkammer | |
EP0602396B1 (de) | Verfahren zum Betrieb eines Wärmeerzeugers | |
EP0483554B1 (de) | Verfahren zur Minimierung der NOx-Emissionen aus einer Verbrennung | |
EP0694730B1 (de) | Brenner | |
EP0543155B1 (de) | Verfahren für eine schadstoffarme Verbrennung in einem Kraftwerkskessel | |
EP0545114B1 (de) | Einrichtung für eine Prozesswärmeerzeugung | |
EP0866269B1 (de) | Kesselanlage für eine Wärmeerzeugung | |
EP0683219B1 (de) | Verfahren zur lufgeblasenen Vergasung von kohlenstoffhaltigen Brennstoffen | |
EP0866267B1 (de) | Verfahren zum Betrieb einer Kesselanlage und die Kesselanlage | |
DE19505614A1 (de) | Verfahren zum Betrieb eines Vormischbrenners | |
EP0881432A2 (de) | Brenner zum Betrieb eines Aggregates zur Erzeugung eines Heissgases |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE FR GB NL |
|
K1C1 | Correction of patent application (title page) published |
Effective date: 19960103 |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE FR GB NL |
|
17P | Request for examination filed |
Effective date: 19961219 |
|
17Q | First examination report despatched |
Effective date: 19990128 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB NL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20000301 Ref country code: GB Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20000301 Ref country code: FR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20000301 |
|
REF | Corresponds to: |
Ref document number: 59507869 Country of ref document: DE Date of ref document: 20000406 |
|
RAP2 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: ABB ALSTOM POWER (SCHWEIZ) AG |
|
EN | Fr: translation not filed | ||
NLT2 | Nl: modifications (of names), taken from the european patent patent bulletin |
Owner name: ABB ALSTOM POWER (SCHWEIZ) AG |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 20000301 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010403 |