High velocity burner, system and method

Combustion – Process of combustion or burner operation – Starting or shutdown procedure

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Details

431 1, 431 10, 431181, 431187, F23C 700

Patent

active

052638499

ABSTRACT:
A burner and burner firing method and system for a furnace combustion chamber in which a burner, having an ignition chamber for discharging an ignited combustible mixture of primary air and fuel into the furnace combustion chamber, and a plurality of nozzle ports for directing a high velocity stream of secondary air into the furnace combustion chamber in a direction generally parallel to the direction of flow from said ignition chamber, is operated in a first mode at furnace combustion chamber temperatures up to a transitional temperature by accelerating a burning mixture of fuel and air to moderately high velocities into the furnace combustion chamber, and in a second mode at furnace combustion temperatures above said transitional temperature by introducing a relatively low velocity stream of fuel mixed with a minor amount of air needed for stoichiometric combustion and accelerating a separate stream of air to high velocities into the furnace combustion chamber for mixture with said low velocity stream downstream from the burner in the furnace combustion chamber, said separate stream of air comprising the remainder of air required for stoichiometric combustion of the fuel. The system includes fuel supply and separately controlled primary and secondary air supply flow lines in which the fuel/air ratio in the respective modes of operation is dependent on air flow rates.

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"SVG Super Velocity Gas Burner Series" Brochure, Mar. 1991, Hauck Manufacturing Co. Lebanon Pa.
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