Ignition and combustion supporting burner for pulverized solid fossil fuel and combustion chamber comprising same
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United States of America Patent
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-
Sep 1, 1987
Grant Date -
N/A
app pub date -
Aug 4, 1986
filing date -
Aug 16, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ignition and combustion supporting burner for pulverized solid fossil fuel comprises an axial conduit for feeding the pulverized fuel in a primary combustion supporting gas. The shape of a refractory tap-hole enables the initial part of the flame to be confined. A conduit for feeding tertiary combustion supporting gas is concentric with the tap-hole and partially or totally surrounds it. The burner also incorporates a flame detector device and an igniter in the refractory tap-hole or in the axial conduit. The axial conduit is provided with translation means providing for adjustment of the length of a chamber for preliminary mixing of the fuel and part of the combustion supporting gas comprised between the end of this conduit and the inlet of the tap-hole.
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