Lurgi-Krupp coke briquetting installations

Technical Report ·

OSTI ID:6726849

This brochure from the Lurgi Company describes the operations of the coke briquetting installations. It contained photographs and diagrams of the major divisions of the installations. The purpose of the installations was to transform tar-rich, dust-forming coals and lignite into solid, hard, smokeless briquettes and tars which could be converted into liquid fuels. Thus fuels of low heating value which would be uneconomical to transport in their original form were changed into fuels of high heating value which could be transported economically. The process started with a drying and grinding procedure (Lurgi Mahltrocknung), then the fine coal particles were pressed into briquettes in a ring press (Krupp Ringwalzenpresse), at 1500 to 2500 kg/cm/sup 2/ pressure, and then the briquettes were carbonized at 550/sup 0/ to 800/sup 0/C (Lurgi Spuelgasschwelung) to drive off water and the tar components. In the Mahltrocknung process, coal particles were carried in an oxygen-free suction stream through a zone in which, within the time of one second, circulating heated gas raised the temperature to about 800/sup 0/C and then, further along, the velocity of the stream cooled the temperature again to about 150/sup 0/C. The sudden temperature rise caused immediate vaporization of the water in the coal and consequent bursting of the particles into smaller fragments, and the quick cooling prevented melting of the volatile components and glazing over of the surfaces of the smaller particles. The resulting dryed, rough-surfaced particles were excellent for briquetting. The ring press consisted mainly of two grooved rotating rings, one located eccentrically within and pressing upon the other, between which the material was pressed into briquettes. A table gave analyses and heating values of the raw coal, the briquettes, and liquid by-products. 10 photographs, 4 diagrams, 1 table

• Research Organization: Lurgi-Gesellschaft fuer Warmtechnik m.b.H., Frankfurt am Main (Germany)
• OSTI ID: 6726849
• Report Number(s): TOM-188-20657-20667
• Country of Publication: United States
• Language: German

Related Subjects

01 COAL, LIGNITE, AND PEAT
010401 -- Coal & Coal Products-- Carbonization-- (-1987)
010600 -- Coal
Lignite
& Peat-- Properties & Composition
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
BLOWERS
BRIQUETS
BRIQUETTING
BROWN COAL
CARBONACEOUS MATERIALS
CARBONIZATION
CHEMICAL REACTIONS
COAL
COAL PREPARATION
COAL TAR
COKE
COMBUSTION HEAT
COMMINUTION
CONTROL
CRYSTAL STRUCTURE
DATA COMPILATION
DECOMPOSITION
DESIGN
DIAGRAMS
DUST COLLECTORS
ELECTROSTATIC PRECIPITATORS
ENERGY
ENERGY SOURCES
ENTHALPY
EQUIPMENT
EVALUATION
FABRICATION
FLOW RATE
FLUID FLOW
FLUIDS
FOSSIL FUELS
FRACTURING
FUELS
GAS FLOW
GASES
GASOLINE
GRAIN SIZE
HEAT
HIGH PRESSURE
HIGH TEMPERATURE
IMAGES
INFORMATION
LIGNITE
MEDIUM PRESSURE
MEDIUM TEMPERATURE
MICROSTRUCTURE
MOLDING
NORMAL-MODE ANALYSIS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
POLLUTION CONTROL EQUIPMENT
PROCESS CONTROL
PROCESSING
PRODUCTION
REACTION HEAT
SIZE
SOLID FUELS
TABLES
TAR
TEMPERATURE GRADIENTS
THERMODYNAMIC PROPERTIES