Parallel flow burner

Combustion – Fuel disperser installed in furnace – Spaced fuel dispersing orifices within furnace

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Details

431183, 431284, F23C 508

Patent

active

043033865

ABSTRACT:
A burner which has a central liquid fuel atomizing nozzle is disclosed. An inner member defines a steam chamber and is surrounded by a shell that defines a liquid fuel compartment. A conduit extends from the steam chamber forming a steam core flow. A first passage feeds liquid fuel about the steam core flow to form an annular liquid fuel stream thereabout. A second passage forms an outer steam flow which envelops the annular liquid fuel flow. The burner further includes ducts to form a first combustion airflow co-axially about the nozzle, a second combustion airflow which surrounds the first flow, and a third combustion airflow which envelops the second flow and generally protects the furnace wall from coming into contact with the flame generated by the burner. Gas spuds are placed in the second combustion airflow and each spud includes a discharge plate which generally faces in the direction of combustion airflow and which has one or more gas discharge holes arranged to cause the gas streams to substantially cover the entire space occupied by the gas stream downstream of the nozzle and upstream of the combustion chamber of the furnace. The plates of the spuds are relatively thick and the gas is supplied to the spuds at a relatively low pressure.

REFERENCES:
patent: 2822864 (1958-02-01), Black
patent: 2851093 (1958-09-01), Zink et al.
patent: 2933259 (1960-04-01), Raskin
patent: 3074361 (1963-01-01), Hugh et al.
patent: 3244220 (1966-04-01), Kloecker
patent: 3284069 (1966-11-01), Levaux
patent: 3476321 (1969-11-01), Levaux
patent: 4141505 (1979-02-01), Reich

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