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US 5,725,366 AGranted
High-heat transfer, low-nox oxygen-fuel combustion system
AssigneeInstitute of Gas Technology
InventorsMark J. Khinkis, Hamid A. Abbasi, Roman E. Grosman
Life of this patent
Estimating the term…
Abstract
A process and apparatus for combustion of a fuel/oxidant mixture in which at least a portion of the fuel is preheated and, thereafter, burned with any remaining portion of fuel in a flame having fuel-rich zones, thereby forming soot within the resulting flame to produce a luminous, high heat transfer, low NO.sub.x flame.
Claims12
A process for combustion of a mixture of fuel and oxidant comprising:
- preheating at least a portion of said fuel by preburning a first portion of said portion of said fuel with a preburn oxidant having an amount of oxygen greater than the amount of oxygen in air, forming precombustion products;
- mixing said preheated fuel with any remaining portion of said fuel, at least a portion of an oxidant required for complete combustion of said fuel, and said precombustion products and igniting said mixture, forming a flame;
- and
- then forming soot within said flame to produce a luminous flame.
1 more element
A process in accordance with claim 6, wherein said fuel is preheated up to 1000.degree. F. in said first stage.
An apparatus for combustion of a mixture of fuel and oxidant comprising:
- preheat means for preheating at least a portion of said fuel, said preheat means comprising one of a furnace heat recovery system and a precombustor, said precombustor being a premixed cyclonic oxygen/natural gas chamber;
- mixing means for mixing preheated fuel with at least a portion of an oxidant required for complete combustion of said fuel;
- and
- combustion means for combustion of said preheated fuel and said oxidant and any remaining portion of said fuel, said combustion means comprising means for forming soot within a flame generated by said combustion means.
1 more element
Dependencies are inferred from the claim text.