Process and apparatus for drying and preheating coking coal by means of flue gas

Patent · Tue Dec 29 04:00:00 EST 1981

OSTI ID:5712281

Flockenhaus, C; Meckel, J F; Wagener, D

Flue gas discharged from a recuperator or regenerator of a coke oven battery has the steam thereof removed by means of a direct or indirect cooling and condensation operation. After the steam is removed from the flue gas it is then passed through a coke dry cooling plant in direct contact with hot coke therein to form dry cooled coke while simultaneously increasing the temperature of the flue gas. The flue gas is then passed through a coal preheating plant to directly contact and dry and preheat moist coking coal contained therein. The entire system is open, such that a given quantity of the flue gas passes only once through the system. When the temperature of the flue gas as received from a coke oven battery is extremely high, then the flue gas may be subjected to a partial cooling operation prior to the cooling and condensation operation. Further, a portion of the heat of the flue gas, after the discharge thereof from the coke dry cooling plant and prior to the introduction thereof into the coal preheating plant, may be used to generate steam and/or electricity.

• Assignee: Didier Engineering Gmbh (Germany, Federal Republic of)
• Patent Number(s): US 4308102
• OSTI ID: 5712281
• 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
COAL
COKE
COKING
COOLING
DECOMPOSITION
DRYING
ENERGY RECOVERY
ENERGY SOURCES
ENERGY TRANSFER
FLUE GAS
FOSSIL FUELS
FUELS
GASEOUS WASTES
HEAT RECOVERY
HEAT TRANSFER
HEAT TREATMENTS
MATERIALS
POWER GENERATION
PRODUCTION
RECOVERY
REGENERATORS
STEAM GENERATION
VAPOR CONDENSATION
WASTE HEAT UTILIZATION
WASTE PRODUCT UTILIZATION
WASTES