Method for drying coal and cooling coke

Patent · Tue Sep 11 04:00:00 EDT 1984

OSTI ID:6427716

Petrovic, V; Jokisch, F; Rotthaus, H; Schmid, K

In a coking process, coal to be coked is preheated in a cascaded whirling bed drier into which the coal is charged from above and exposed to an indirect heat transfer while whirling in a coal-stream mixture. Hot gas applied to the heating pipes in respective cascades of the drier is branched off from the total amount of hot gases discharged from a dry cooler in which hot coke from the coke oven is cooled by recirculating cooler gas constituted by a partial gas stream discharged from the cascades of the drier and reunited with the other partial stream subject to a heat exchange for generating steam. Steam from the whirling beds is discharged from the cascaded drier, separated from the entrained dust particles, and then the excessive steam is drained in a branch conduit and the remaining steam is compressed and reintroduced into the lowermost whirling bed in the drier.

• Assignee: Krupp-Koppers GmbH (Germany, Federal Republic of)
• Patent Number(s): US 4470878
• OSTI ID: 6427716
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010401 -- Coal & Coal Products-- Carbonization-- (-1987)
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
CARBONACEOUS MATERIALS
CARBONIZATION
CHEMICAL REACTIONS
CIRCULATING SYSTEMS
COAL
COAL PREPARATION
COKE
COKING
COOLING
DECOMPOSITION
DESIGN
DRYERS
DRYING
ENERGY SOURCES
FLUID FLOW
FOSSIL FUELS
FUELS
GAS FLOW
HEAT TREATMENTS
MATERIALS
STEAM