Cascaded coal dryer for a coking plant

Patent · Tue Feb 07 04:00:00 EST 1984

OSTI ID:6934587

Petrovic, V; Heinz, R; Jokisch, F; Schmid, K

In a coking process, coal to be coked is preheated in a cascaded whirling bed dryer into which the coal is charged from above and exposed to an indirect heat transfer while whirling in a coal-steam mixture. Hot gas applied to the heating pipes in respective cascades of the dryer 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 dryer 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 dryer, 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 dryer.

• Assignee: Krupp-Koppers GmbH (Germany, Federal Republic of)
• Patent Number(s): US 4430161
• OSTI ID: 6934587
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010401* -- Coal & Coal Products-- Carbonization-- (-1987)
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320304 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Waste Heat Recovery & Utilization
CARBONACEOUS MATERIALS
CARBONIZATION
CHEMICAL REACTIONS
CIRCULATING SYSTEMS
COAL
COKE
COKE OVENS
COKING
COOLING
DECOMPOSITION
DESIGN
DRYERS
DRYING
ENERGY SOURCES
ENERGY TRANSFER
EQUIPMENT
FOSSIL FUELS
FUELS
HEAT EXCHANGERS
HEAT RECOVERY EQUIPMENT
HEAT TRANSFER
HEAT TREATMENTS
HIGH TEMPERATURE
MATERIALS
OVEN COKE
SEPARATION EQUIPMENT
STEAM
STEAM SEPARATORS
VAPOR SEPARATORS
WASTE HEAT UTILIZATION
WASTE PRODUCT UTILIZATION