F - Mech Eng,Light,Heat,Weapons – 23 – K
Patent
F - Mech Eng,Light,Heat,Weapons
23
K
F23K 3/02 (2006.01) F23D 1/00 (2006.01)
Patent
CA 2632412
With a burner, especially pulverized coal burner (1), with a fuel conveying tube (7) and a primary air tube (9) which is concentrically arranged within it, wherein the primary air tube (9) on the mouth discharge side terminates at a distance to the mouth opening of the fuel conveying tube (7), and the burner (1) is connected, or can be connected, to a feed line which conveys pulverous fuel in dense phase, a solution is to be created which enables a low- NO x burner, which is suitable for firing the furnace of a steam generator, to be equipped with a dense phase conveyance of the fuel, without the low-NO x combustion characteristic being disadvantageously affected. This is achieved by the inside space of the primary air tube (9) being able to be connected, or being connected, to a primary air feed line, and by the fuel conveying space (13), which is formed between the primary air tube (9) and the fuel conveying tube (7), being able to be connected, or being connected, to the feed line which feeds pulverous fuel to the burner (1) in dense phase.
Blake Cassels & Graydon Llp
Hitachi Power Europe Gmbh
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