Abstract:
A method of firing a biofuel is provided. The method includes: introducing the biofuel into a combustion chamber having a first stage and a second stage; combusting the biofuel in a suspended state while flowing from the first stage to the second stage; and introducing a first air stream and a second air stream into the combustion chamber at the first stage and at the second stage, respectively, to facilitate combustion of the biofuel.
Abstract:
Die Erfindung betrifft einen feststoffgefeuerten Brenner (10) mit einer Brennstoffzuführung (12), einer Brennermuffel sowie mindestens einer Verbrennungsluftzuführung (30). Es ist vorgesehen, dass die Brennermuffel (20) in eine Hauptlastmuffel (22) und eine Teillastmuffel (21) unterteilt ist, wobei die Hauptlastmuffel und die Teillastmuffel eine rotationssymmetrische Grundform aufweisen und die Rotationsachsen (25) zusammenfallen. Die Hauptlastmuffel schließt sich unmittelbar an die Teillastmuffel an. Ferner betrifft die Erfindung ein Verfahren zum Betrieb eines feststoffgefeuerten Brenners (10), bei dem die Verbrennungsluftzuführung (30) derart geregelt ist, dass die Flamme bis ca. 30% der Maximalleistung des feststoffgefeuerten Brenners (10) sich im Wesentlichen in der Teillastmuffel befindet.
Abstract:
Method of combusting a fuel with an oxidizer and corresponding burner assembly, whereby a jet of fuel (210) and a jet of primary oxidizer (241) are injected into a combustion zone (21) in contact with one another so as to generate a primary fuel-rich flame (200), a swirling first peripheral gas jet is injected through a first passage (120) around the fuel jet and primary oxidizer jets and a swirling second peripheral gas jet is injected through a second passage (130) around the first peripheral gas jet and whereby a jet of secondary oxidizer is injected through a passage (150) into the combustion zone between the first and second peripheral gas jets.
Abstract:
Die Erfindung betrifft ein Verfahren zur Regelung eines Verbrennungsprozesses, insbesondere in einem Feuerraum eines fossilbefeuerten Dampferzeugers, bei dem räumlich aufgelöste Messwerte in dem Feuerraum ermittelt werden. Räumlich aufgelöste Messwerte werden in regelungstechnisch verwertbare Zustandsgrößen transformiert und anschließend als Istwerte Regelkreisen zugeführt. Die in den Regelkreisen ermittelten Stellgrößenänderungen werden in einer Rücktransformation unter Berücksichtigung eines Optimierungsziels auf eine Vielzahl von Stellgliedern verteilt. Die Erfindung betrifft ferner ein entsprechendes Verbrennungssystem.
Abstract:
A fuel injector (10) for use in a furnace is provided. The fuel injector (10) is used to deliver pulverized fuel to a combustion chamber of a furnace. The structure of the fuel injector (10) facilitates efficient combustion while stabilizing the combustion flame. As a result, a minimal amount of NO X and other undesirable byproducts are released into the atmosphere.
Abstract translation:提供一种用于炉中的燃料喷射器(10)。 燃料喷射器(10)用于将粉碎的燃料输送到炉的燃烧室。 燃料喷射器(10)的结构有助于在稳定燃烧火焰的同时有效地燃烧。 结果,最少量的NO x X和其它不希望的副产物被释放到大气中。
Abstract:
In the field of flow distributors there is a need for a flow distributor which produces a uniform distribution of particulate material within a carrier fluid without causing a substantial pressure drop in the carrier fluid. A flow distributor (10) , for insertion in a pipeline conveying a particulate material carried by a carrier fluid, comprises a pipe (12) including at least one deflector section (14) which has an inlet end (16) and an outlet end (18) . The deflector section (14) is shaped so as to define a first continuous hollow conduit (24) which has a substantially constant cross-sectional area along the length thereof . The first hollow conduit (24) has an active inner surface (20) angled relative to the pipeline so as to urge particles of the particulate material towards a central region of the flow distributor (10) . The active inner surface (20) has a constant gradient in a longitudinal direction of the flow distributor (10) .
Abstract:
An inclined hearth combustor which generally includes a primary combustion chamber having a plurality of stepped hearths, a secondary combustion chamber in communication with the primary combustion chamber and a boiler having an inlet in communication with the secondary combustion chamber. The secondary combustion chamber includes a refractory-lined cyclone separator for removing fly ash from combustion gases exiting the primary combustion chamber and the boiler inlet is surrounded by the cyclone separator. The primary combustion chamber may further include an ash transfer ram movably disposed between two stepped hearths, wherein the ash transfer ram includes a top layer of refractory material extending rearwardly from a leading edge thereof. The ash transfer ram may further include a plurality of V-shaped wheels attached to a bottom surface thereof, a replaceable wear plate disposed on a side surface thereof and/or a wiper blade fixed on a forward face thereof. At least one hearth may include two spaced rows of air feed-tubes longitudinally embedded therein for delivering a combustion gas into the combustion chamber. The air-feed tubes may intersect with an air distribution plenum for simultaneously delivering the combustion gas to the air feed-tubes. The primary combustion chamber may further include a reciprocating loader ram movably disposed on the top surface of the top-most hearth for pushing combustible material on the top-most hearth, wherein the loader ram has a bottom surface and at least one longitudinally extending replaceable wear strip disposed thereon.