Apparatus and method for delivery of combustion air in multiple

Details Apparatus and method for delivery of combustion air in multiple Apparatus and method for delivery of combustion air in multiple

1987-03-19

1989-01-31

Dority, Jr., Carroll B.

Combustion

Process of combustion or burner operation

Flame shaping, or distributing components in combustion zone

431 10, 431182, 431183, 239404, 239406, F23M 300

Patent

active

048012610

ABSTRACT:
An air register apparatus, method, and arrangement is disclosed in which each air register includes two portions, one of which feeds combustion air to an inner, ignition zone where fuel is first ignited, the other of which feeds combustion air to an outer, supplemental zone where the main combustion takes place. These two register portions provide separate and discrete air streams having measurable characteristics which accurately reflect the characteristics of the overall flow through each register portion and which characteristics govern combustion characteristics in the associated zone. Each air stream passes through an inwardly spiralling scroll passageway having a simple upstream air valve at the entrance to the passageway for controlling the flow of air through the passageway. This upstream air valve is remote from the hostile environment of the furnace or other combustion device.

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Campobenedetto et al, "Development of a Low-NO.sub.x Pulverized -Coal Firing System", Jun. 9-12, 1981, technical paper by the Babcock & Wilcox Co., 9 pages.

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