Upgrading coal and other carbonaceous fuels using a lean fuel gas stream from a pyrolysis step

A method for upgrading coal and other carbonaceous fuels includes subjecting the carbonaceous fuel to a pyrolyzing process, thereby forming upgraded carbonaceous fuel and a flow of lean fuel gases. Auxiliary fuel is combusted in an auxiliary fuel combustor to produce auxiliary fuel combustion gases,...

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Bibliographische Detailangaben
Hauptverfasser:	Smith Ronn G, Coolidge Dennis W, White Leslie C, Horne Deane A
Format:	Patent
Sprache:	eng
Schlagworte:	ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL BLASTING CHEMISTRY COMBUSTION APPARATUS COMBUSTION PROCESSES DESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FORPRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS FEEDING FUEL TO COMBUSTION APPARATUS FIRELIGHTERS FUELS FUELS NOT OTHERWISE PROVIDED FOR HEATING LIGHTING LIQUEFIED PETROLEUM GAS LUBRICANTS MECHANICAL ENGINEERING METALLURGY NATURAL GAS PEAT PETROLEUM, GAS OR COKE INDUSTRIES REGULATING OR CONTROLLING COMBUSTION SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K TECHNICAL GASES CONTAINING CARBON MONOXIDE WEAPONS
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Beschreibung
Zusammenfassung:	A method for upgrading coal and other carbonaceous fuels includes subjecting the carbonaceous fuel to a pyrolyzing process, thereby forming upgraded carbonaceous fuel and a flow of lean fuel gases. Auxiliary fuel is combusted in an auxiliary fuel combustor to produce auxiliary fuel combustion gases, and the lean fuel gases are heated with the auxiliary fuel combustion gases. The heated lean fuel gases are combusted in a lean fuel combustor, thereby producing a gas stream of products of combustion, and at least a portion of the gas stream of products of combustion are directed to the pyrolyzer.