Patent ID: 6146131
Filing Date: 2000-11-14
Classification: F23C,F23G

Abstract:
A ground flare stack for incinerating waste gases, the stack having a lower tubular portion and an upper tubular exhaust portion, comprising:(a) a tubular burn chamber located intermediate the lower and upper portions and having combustion air intakes located below the burn chamber,(b) one or more pairs of waste gas inlet ports and closure ports, the inlet and closure port of each pair being located on opposing sides of the burn chamber,(c) a service access port located in the stack at an elevation equal to or below the waste gas inlet ports;(d) one or more primary burner assemblies fitted within the burn chamber between the inlet and closure ports, the burner assemblies accepting waste gases from the inlet port and discharging waste gases into the burn chamber for mixing with the combustion air for creating exhaust gases; and(e) the tubular exhaust stack having one or more axially displaced tubular exhaust shells, each upwardly adjacent exhaust shell having a greater diameter than the preceding exhaust shell, the exhaust shells forming a contiguous bore and being concentrically spaced for forming one or more annular inlets for admitting additional annular air into the stack for discharge with the exhaust gases.