Drying, briquetting, and low-temperature carbonization of brown coal in Lurgi--Spuelgas retorts

Technical Report · Tue Jan 01 04:00:00 EST 1946

OSTI ID:6984796

Bardgett, H

The report described the processes which were used in connection with Lurgi--Spuelgas retorts. After the coal was weighed, a magnetic separator was used to remove any iron still present. In the drying process, hot inert gases were used in the drying plant to reduce the moisture in the coal from 48% to 12% to 13%. The speed of the heating gas stream in the main drier pipe was said to be 30 to 35 meters per second. The volume of gas from the carbonization system used in the drying plant was 200 m/sup 3/. In the briquetting process, the briquetting of coal, dried to 12% to 13% moisture and of particle size 0 to 4 mm, was effected in extrusion presses at a pressure of about 10 tons/in./sup 2/. The briquette was made as a block of four roughly cylindrical briquettes joined together with the overall length of 8 in., and each of the four portions was 2/sup 1///sub 2/ x 2 in. and 2/sup 1///sub 2/ in. in depth. In the carbonization process, 10 Lurgi--Spuelgas low-temperature-carbonization units were used, each one consisting of two separate vertical shafts placed one on each side of central combustion chambers supplying the heating gases. There was a figure in diagrammatical form which gave the arrangement of one half of a unit. Combustion of the recirculated gases produced on carbonization gave the heat in both drying and carbonization sections to heat the briquettes. In gas producers, the process was practically self-supporting from the point of view of gas necessary for drying and carbonization. Coke treatment, fire and explosion precautions, by-product recovery, tar, light oil, and liquor, as well as cost and the capital investment for different processes, were discussed in the rest of the report. 2 figures.

• Research Organization: Lurgi-Gesellschaft fuer Warmtechnik m.b.H., Frankfurt am Main (Germany)
• OSTI ID: 6984796
• Report Number(s): TOM-239-188-207
• Country of Publication: United States
• Language: English

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 COMPOSITION
CHEMICAL REACTIONS
CHEMICAL REACTORS
COAL
COAL GAS
COAL PREPARATION
COAL PREPARATION PLANTS
COKE
COMMINUTION
CONVEYORS
COST
DATA COMPILATION
DECOMPOSITION
DESIGN
DIAGRAMS
DIMENSIONS
DRYING
DUSTS
ELECTRIC POTENTIAL
ELECTROSTATIC PRECIPITATORS
ENERGY SOURCES
EQUIPMENT
FABRICATION
FLUIDS
FOSSIL FUELS
FUELS
GASES
HAZARDS
HIGH TEMPERATURE
INDUSTRIAL PLANTS
INSPECTION
LABOR
MEDIUM PRESSURE
MEDIUM TEMPERATURE
MOLDING
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PISTONS
POLLUTION CONTROL EQUIPMENT
POWER DEMAND
PRODUCTION
REMOVAL
RETORTS
SAFETY STANDARDS
SIZE
SOLID FUELS
STANDARDS
TAR
VERY HIGH PRESSURE
VERY HIGH TEMPERATURE
VOLUME