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US 4,356,975 AGranted
Nozzle tip for pulverized coal burner
AssigneeCombustion Engineering, Inc.
InventorRoman Chadshay
Life of this patent
Estimating the term…
Abstract
An improved nozzle tip (10) for a pulverized coal-fired burner having one or more splitter plates (20) disposed therein. Each splitter plate (20) is formed of a first portion (22) of highly abrasion resistant material disposed at the inlet end of the nozzle tip (10) and a second portion (24) of highly heat resistant material disposed at the outlet end of the nozzle tip (10).
Claims8
A nozzle tip for a burner on a pulverized coal-fired furnace, said nozzle tip of the type having:
- an open-ended outer shell spaced from and surrounding said inner shell, so as to define an annualar flow passageway therebetween through which additional air is directed into the furnace;
- and a splitter plate positioned within said inner shell along a line parallel to the longitudinal axis thereof so as to divide the inner shell into a plurality of flow passages, wherein said splitter plate comprises a first portion of abrasion resistant material disposed within said inner shell with its leading edge at the inlet end of the nozzle tip and extending a substantial distance into said inner shell along a line parallel to the longitudinal axis thereof;
- and a second portion of heat resistant material disposed within said inner shell so as to abut the trailing edge of said abrasion resistant plate and extend therefrom toward the discharge end of said nozzle tip along a line parallel to the longitudinal axis of said inner shell.
Dependencies are inferred from the claim text.