Frederick David Calfo

US Patent:

44258542, Jan 17, 1984

Filed:

Jun 30, 1982

Appl. No.:

6/393588

Inventors:

Frederick D. Calfo - Elyria OH
Michael W. Lupton - Strongsville OH

Assignee:

The United States of America as represented by the Administrator of the
National Aeronautics and Space Administration - Washington DC

International Classification:

F23C 110
F23C 112

US Classification:

110262

Abstract:

It is an object of the invention to provide for a coal in oil mixture a combustor or burner system in which the ash resulting from burning the mixture is of submicron particle size. The burner system comprises, as shown in FIGS. 1 and 2, a burner section (11), a flame exit nozzle (12), a fuel nozzle section (13) and an air tube (14) by which preheated air is directed into burner section (11). Regulated air pressure is delivered to a fuel nozzle (34) in nozzle section (13) through a line (9). Means (8),(16), and (17),(29),(6),(30) and (31) are provided for directing a mixture of coal particles and oil from a drum (15) to a nozzle (34) of FIG. 2 at a desired rate and pressure while a means (19) returns excess fuel to the fuel drum (15). Means (25) is provided for keeping the coal particles uniformly distributed in the coal in oil mixture in fuel drum (15). Means (29), (30), and (31) provide for stable fuel pressure supply from fuel pump (8) to fuel nozzle (34).