Abstract:
Das Verfahren und die Anlage zum Vermindern der Schadstoffemissionen in Rauchgasen von Feuerungsanlagen (1,6) weist eine erste, mit einem Luftüberschuß von z.B. 15% betriebene Feuerungsanlage (1) und eine zweite Feuerungsanlage (6), in der eine Nachverbrennung im stöchiometrischen Bereich mit Verbrauch des Restsauerstoffs durchgeführt wird auf. Die aus der zweiten Feuerungsanlage (6) austretenden Rauchgase enthalten keinen freien Sauerstoff mehr. jedoch die Schadstoffe: unverbrannter Kohlenwasserstoffe, Kohlenmonoxyd, Stickoxyde, Schwefeldioxyd und Schwefeltrioxyd. Die erstgenannten Schadstoffe - unverbrannte Kohlenwasserstoffe, Kohlenmonoxyd und Stickoxyde - werden in einem multifunktionellen Katalysator zu Kohlendioxyd, Wasserdampf und Stickstoff umgesetzt. Der Schwefel des Rauchgases wird mit Hilfe eines Oxydationskatalysators (12) zu Schwefeltrioxyd oxydiert, das sich mit dem im Rauchgas enthaltenen Wasserdampf zu Schwefelsäure umsetzt.
Abstract:
There are primary fuel nozzle (11) for jetting the first coal in the fine powder form with an air ratio up to 1, and the secondary fuel nozzle (13) for jetting the second coal in the fine powder form with an air ratio at least 1 from the outer circumferential portion of the primary fuel nozzle. Swirl means (15) are located at the top of the secondary fuel nozzle (13) for swirling the second coal.
Abstract:
The invention relates to a burner, particularly Low-NOx-burner, for generating a flame by combustion of a fuel, comprising: a tile (15, 15a, 15b) surrounding an opening (2, 2a, 2b) of the tile (15, 15a, 15b) extending along a burner axis (12), the tile (15, 15a, 15b) further comprising a front side (20) and a rear side (21) facing away from the front side (20), wherein the rear side (21) comprises an air inlet (10, 10a, 10b) connected to said opening for feeding air (A, A', A") into said opening (2, 2a, 2b), and wherein said front side (20) comprises a discharge outlet (9, 9a, 9b) connected to said opening (2, 2a, 2b) for discharging a flame (30) generated by the burner (1) into a surrounding area (S), and wherein the tile (15, 15a, 15b) further comprises an inside (22) facing said opening (2, 2a, 2b) as well as an outside (23) facing away from said opening (2, 2a, 2b). According to the invention the burner (1) further comprises at least one oxygen lance (5) extending along the burner axis (12) in a first recess (17) of said tile (15, 15a, 15b), the at least one oxygen lance (5) having an ejection nozzle (6) at an end region of the at least one oxygen lance (5) for ejecting oxygen (O), particularly such that the oxygen (0) is at first ejected into a colder flue gas region (31) surrounding the relatively hotter flame (30) generated by the burner (1). Further, the invention relates to a method for generating a flame (30).
Abstract:
A burner operating with flameless combustion, comprising a system for sucking the recycling flue gases directly from the combustion chamber by means of an ejector (1) fed with the comburent, a heat exchange system positioned between the recycling flue gases and the comburent, a system for injecting the fuel directly into the recycling flue gases, the latter comprising or not comprising the comburent with formation of a mixture of fuel-recycling flue gases-comburent in the zone around the outlet of the comburent ejector and following introduction of the mixture into the combustion chamber.
Abstract:
A high efficiency low NO x emission thermal oxidizer burner apparatus. The apparatus includes a plenum chamber having an inlet for introduction of combustion air and includes a combustion chamber in fluid communication with the plenum chamber. A primary waste gas pipe terminates in a lobed tip nozzle through the plenum chamber for introduction of waste gas into the combustion chamber. A primary fuel gas line is in communication with the plenum chamber for introduction of primary fuel gas.
Abstract:
A method for combusting in a combustion space, in which a furnace has been created, a second solid fuel in combination with a first solid fuel for recovering energy from those fuels. The method provides for: supply of the first solid fuel in particulate form, supply of the second solid fuel in particulate form, feed of the first solid fuel particles to the combustion space with a first primary, oxygen containing, combustion air and feed of the second solid fuel particles to the combustion space with a second primary, oxygen containing, combustion air. The first fuel particles are fed into a first burner layer of the combustion space and the second fuel particles into a second burner layer of the combustion space. The second burner layer, in relation to the furnace, is' located downstream of the first burner layer.
Abstract:
A power generating combustion system (10) and method are provided with a first stage combustion system (12) that may include a wet oxidation reactor or a direct contact boiler and a second stage combustor (28) including a stoichiometric burner to produce the substantially complete combustion of a wide range of fuels and mixtures of fuels to produce combustion products usable in generating power. The system design pressures allow the substantially complete combustion of garbage, municipal and industrial waste and low quality fuels to generate power.