US 6,146,131 AGranted

Enclosed ground-flare incinerator

AssigneeRana Development, Inc.

InventorThomas R. Wiseman

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Abstract

An improved ground flare is provided comprising a stack, two or more burner assemblies, and a servicing port so that some of the burner assemblies can be serviced while others remain in operation. The burner assemblies comprise a burner conduit and nozzles which are individually fitted to the stack's burner chamber and are each removably supported in the chamber. Preferably, the lower end of the stack is formed of one or more axially displaced lower tubular shells which are concentrically spaced for forming annular inlets for admitting additional combustion air. More preferably, an upper tubular exhaust stack, similarly formed, admits additional combustion air: for providing secondary combustion air for increasing the efficiency of combustion from the burner assemblies; for increasing the flow of exhaust gases for improved discharge momentum and atmospheric dispersion; and for cooling the upper stack. Additionally, the additional air permits the addition of auxiliary burners above the annular spaces wherein additional air supplies the necessary primary combustion air, enabling greater waste gas combustion throughput.

Claims7

Dependent claims

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.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/439,260Filed 11 Nov 1999 · continuation in part
Priority: 26 Jun 1999
Granted: 14 Nov 2000
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

F23C 5/02
Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus: structural details…
F23C 6/047
With staged combustion in a single enclosure: with fuel supply in stages
F23G 7/08
Of waste gases or noxious gases, e.g. exhaust gases: using flares, e.g. in stacks
F23C
Methods or apparatus for combustion using fluid fuel or solid fuel suspended