Centrifuging of tar

Technical Report · Thu May 19 00:00:00 EDT 1938

OSTI ID:5921794

Karl, A K

A brief operation summary is presented of centrifuging tar and waste oils for the removal of solids. Both Heine and Haubold centrifuges were used. Having a solidifying point of 25 to 30/sup 0/C, the tar was first heated, then pumped through heat exchangers into circulation. Circulation was continued until the tar reached 80/sup 0/C. Then it was pumped into tanks, each of which was equipped with a stirrer and a steam jacket. After the tar was pumped by rotary pump from the tanks to the centrifuge, it was centrifuged at 90/sup 0/C (to fit the requirements of other containers, a piston pump was projected). The Heine centrifuge capacity was 700 liters; diameter was 2000 millimeters; rotation speed was 575 revolutions per minute. The residue had the following analysis: 50% solids, 10% water, and 40% oil. The scraping blade on the centrifuge had a Widia coating, the scraping line a Widia nozzle. After filling, the centrifuge was run three minutes for clearing. Then the oil and finally the water were siphoned off. With tar having 0.5% dust, the solids were cut away after every 17 fillings. Throughput of the Heine centrifuge was about 4000 liters per hour. The centrifuges were examined after 200 operating days. The modern Haubold centrifuge had the following characteristics: diameter, 1500 mm; rotation speed 122 revolutions per minute; capacity 400 liters; throughput 2000 liters/hour. The newest Haubold had higher rotation speed. 1 figure.

• Research Organization: I.G. Farbenindustrie, A.G., Merseburg (Germany)
• OSTI ID: 5921794
• Report Number(s): TOM-130-50-52
• Country of Publication: United States
• Language: German

Related Subjects

01 COAL, LIGNITE, AND PEAT
CENTRIFUGES
SPECIFICATIONS
COAL TAR
CENTRIFUGATION
FUEL OILS
RESIDUES
CHEMICAL COMPOSITION
DIAGRAMS
DUSTS
HEAT EXCHANGERS
HYDROGENATION
MEDIUM PRESSURE
MEDIUM TEMPERATURE
PUMPS
TANKS
CHEMICAL REACTIONS
CONCENTRATORS
CONTAINERS
FUELS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
SEPARATION PROCESSES
TAR
010403* - Coal & Coal Products- Hydrogenation- (-1987)