Pulverized solid fuel burner and method of firing pulverized fue

Details Pulverized solid fuel burner and method of firing pulverized fue Pulverized solid fuel burner and method of firing pulverized fue

1985-03-08

1986-12-23

Yuen, Henry C.

Furnaces

Utilizing powdered fuel

Having rotary flow means

110261, 110265, 110104B, F23D 102

Patent

active

046305548

ABSTRACT:
A solid fuel burner especially useful in a system for pulverizing and burning solid fuel, such as coal or other fossil fuel, that is characterized by a possible turndown ratio of up to at least fifteen to one. The burner includes a valved firing nozzle having a firing conduit with firing orifice and internal turbulating means for a mixture of primary air and pulverized solid fuel, and a controlled secondary air supply. A movable valve element, preferably in the form of a double-taper-ended diffuser positioned downstream from the firing orifice, controls the outflow of a turbulent stream of the mxied primary air and fuel from the firing orifice into an ignition chamber and controls flame shape.

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