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IPC Subclass
F23B

METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL

Introduced: September 1968

Classification Context

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

Description

F23B covers combustion systems and methods designed exclusively for solid fuels such as coal, coke, wood, biomass, and other carbonaceous materials. This subclass encompasses furnace design, combustion chambers, grate systems, ash handling mechanisms, and control equipment necessary for efficient solid fuel burning. Technologies include stoker-fired boilers, hand-fired hearths, fluidized bed combustors, and related accessories for regulating air supply and fuel feed. Processes for optimizing combustion conditions, heat transfer, and emission control in solid fuel applications also fall within this classification scope.

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 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 term "secondary air" covers "tertiary air" etc. ash means any solid combustion residues, for example remaining in the fuel bed or suspended in the flue gases 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 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 the apparatus where the reaction takes place between air and fuel flue gases any gaseous products of combustion grate Grates a perforated surface (e.g. a grid) which supports or delimits a bed of burning fuel and serves to supply primary air | Limiting references: Combustion of both solid fuel and fluid fuel, simultaneously or alternately , Combustion of solid fuel suspended in a stream of air, e.g. combustion in fluidised beds or combustion of pulverised fuel using burners where the fuel is transported into the combustion chamber by an air stream , Combustion of solid fuel suspended in a liquid, e.g. combustion of coal-water slurry , Combustion of fuels that are solid at room temperatures, but burned in melted form, e.g. candle wax , , | Application references: Baking ovens Cooking apparatus 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 only solid fuelcombustion apparatus for only solid FUEL(S)

12 direct subcodes

Child Classifications

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  • F23B 101/00 Adaptation of combustion apparatus to boilers in which the combustion chamber is situated inside the boiler vessel, e.g. surrounded by cooled surfaces
  • F23B 20/00 Combustion apparatus specially adapted for portability or transportability
  • F23B 70/00 Combustion apparatus characterised by means for returning solid combustion residues to the combustion chamber
  • F23B 99/00 Subject matter not provided for in other groups of this subclass