Method of firing a tunnel kiln with coal, and coal firing installation for tunnel kilns

Patent · Tue Aug 11 04:00:00 EDT 1981

OSTI ID:6086338

Leisenberg, M

A method is disclosed for firing a tunnel kiln with coal, in which the coal is stored in a preferably airtight bunker, and transported, by means of airtightly enclosed conveyor belts or chains connected to the bunker, to coal injectors operating as burners, which are provided in and distributed over the width of the firing zone of the kiln and connected to an air supply line, wherefrom compressed air is fed intermittently into the injectors, to blow in the coal which is there placed in a metered amount. Each firing place of a kiln is thus formed by a coal injector and the injectors are arranged in rows over the width of the firing zone of the kiln and each row is connected, respectively, by means of an associated conveyor belt and an air distributing pipe, to a conveyor belt extending in the longitudinal direction of the kiln and connecting to the coal bunker, and to a main compressed air line preferably extending parallel thereto. The coal injectors comprise a vertical coal feed tube which is connected to the conveyor belt and is open at its bottom, a receiving plate which is disposed below and spaced from the bottom end of the feed tube, and a casing surrounding the plate and the bottom end of the feed tube and connected to the compressed-air supply line and, through a blow or mixing pipe or directly, to the firing place.

• Assignee: IFI; EDB-82-003919
• Patent Number(s): US 4283170
• OSTI ID: 6086338
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
013000 -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
42 ENGINEERING
421000* -- Engineering-- Combustion Systems
AIR
BURNERS
CARBONACEOUS MATERIALS
COAL
COMPRESSED AIR
COMPRESSED GASES
DESIGN
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL FEEDING SYSTEMS
FUEL SYSTEMS
FUELS
FURNACES
GASES
INJECTION
INTAKE
KILNS
MATERIALS
TUNNEL FURNACES