Combustion – Separately supplied or controlled – physically related flame... – Having common flame chamber or shield means
Patent
1995-03-31
1996-12-17
Dority, Carroll B.
Combustion
Separately supplied or controlled, physically related flame...
Having common flame chamber or shield means
431 8, 431 9, 431353, 60746, 60747, 60733, F23Q 900
Patent
active
055846840
ABSTRACT:
In the case of a heat generator which essentially consists of a premix burner (100) and a flame tube (1), the hot gases (10) from the combustion in the premix burner (100) are fed into the flame tube (1), and there undergo staged post-combustion. This post-combustion takes place by means of a first post-combustion stage (11) and a second post-combustion stage (12). The air/fuel mixture (11a, 12a) is provided for each post-combustion stage (11, 12) in individual mixers (200, 300). These mixers are arranged axially with respect to the flame tube (1) and work in such a way that injection of the corresponding mixture (11a, 12a) makes it possible to obtain different combustion zones which extend in a staged sequence over the flame tube (1). By virtue of this staged post-combustion mode NO.sub.x emissions can be reduced by a factor of 5 compared to conventional techniques.
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Dobbeling Klaus
Knopfel Hans P.
Sattelmayer Thomas
ABB Management AG
Dority Carroll B.
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