METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN AIR

Introduced: September 1968

Classification Context

Section:: MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:: COMBUSTION APPARATUS; COMBUSTION PROCESSES
Subclass:: METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN AIR

Description

This subclass covers combustion systems and methods employing liquid fuels or finely divided solid fuels (such as coal dust or pulverized fuel) dispersed and burned in air streams. It encompasses burner designs, fuel injection systems, and combustion chamber configurations optimized for suspension-type combustion, particularly relevant to oil-fired boilers, pulverized coal furnaces, and similar industrial heating applications. The classification excludes gas combustion (covered under F23D) and combustion of solid fuels in fixed or moving beds (covered under F23B), focusing instead on systems where fuel particles or droplets remain airborne during the combustion process.

Scope Notes

Glossary: air a mixture of gases containing free oxygen and able to promote or support combustion primary air air supplied to the burning fuel (e.g. together with the fuel) in order to liberate combustible gases secondary air air supplied to the combustible gases liberated by the primary air in order to complete their combustion. The expression "secondary air" covers "tertiary air" etc. Burner burners a device by which fluid fuel or solid fuel suspended in air is passed to a combustion space where it burns to produce a self-supporting flame. A burner includes the means for feeding air that are arranged in immediate connection with a fuel feeding conduit, for example concentric with it. Combustion a heat-producing sequence of chemical reactions between a burnable substance and molecular oxygen, e.g. in air, in most cases generating light in the form of flames or a glow combustion chamber combustion chambers a chamber in which fuel is burned to establish a self-supporting fire or flame and which surrounds that fire or flame combustion zone the part of an apparatus where the reaction takes place between air and fuel | Limiting references: Burners Candles | Application references: Baking ovens Cooking apparatus Gas turbine plants Lighting Generating steam Combustion specially adapted for waste or low grade fuel Generating combustion products of high temperature or high pressure Domestic stoves or ranges for cooking or local heating Domestic heating systems or space-heating systems Heating of fluids, e.g. air or water Drying Heat treatment of material or articles

Related Keywords

COMBUSTION apparatus or processes using fluent fuelcombustion apparatus for liquid, gaseous, or fluent FUEL(S)

11 direct subcodes

Child Classifications

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F23C 1/00 Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being either a fluid fuel or a solid fuel suspended in air
F23C 10/00 Apparatus in which combustion takes place in a fluidised bed of fuel or other particles
F23C 101/00 Combustion in entrained fluidised beds, i.e. fluidised beds which have no distinct upper surface
F23C 13/00 Apparatus in which combustion takes place in the presence of catalytic material
F23C 15/00 Apparatus in which combustion takes place in pulses influenced by acoustic resonance in a gas mass
F23C 3/00 Combustion apparatus characterised by the shape of the combustion chamber
F23C 5/00 Combustion apparatus characterised by the arrangement or mounting of burners
F23C 6/00 Combustion apparatus characterised by the combination of two or more combustion chambers
F23C 7/00 Combustion apparatus characterised by arrangements for air supply
F23C 9/00 Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
F23C 99/00 Subject matter not provided for in other groups of this subclass