Test with Rhein brown coal in 1-liter oven and fourth report on neutralization of coal and precipitants

Technical Report · Mon Oct 12 00:00:00 EDT 1942

OSTI ID:7099957

Reitz,

A 1.5 liter sump oven, without stirrer, was used for preparation of Rhein coal with different grinding oils. Partial neutralization of the coal, by mixing sulfuric acid or sulfates with wet coal before drying, was sought. Oven precipitation was reduced by addition of street tar (high middle oil content) and Bruex tar (up to 350/sup 0/C) as well as by a mixture of Estonian slate tar oil and anthracitic tar oil in ratio of 80:20, but there was chalk-coke residue similar to caviar found when the oven was disassembled. Fifty percent neutralization of the coal by sulfuric acid as opposed to untreated coal gave some reduced vaporization and lower asphalt content. Iron sulfate catalyst also gave good results; magnesium sulfate, somewhat less. Though not unequivocally, H/sub 2/SO/sub 4/ and FeSO/sub 4/ both apparently reduced precipitants. A mixture of magnesium sulfate with iron sulfate gave less favorable results over all. Untreated coal with the previous catalysts produced the undesirable caviar-precipitants. The results of the tests were questionable since exactness in components, viscosity, and other problems hindered reproducing the tests consistently. 2 tables.

• Research Organization: I.G. Farbenindustrie, A.G., Ludwigshafen (Germany)
• OSTI ID: 7099957
• Report Number(s): TOM-252-445-448
• Country of Publication: United States
• Language: German

Related Subjects

01 COAL, LIGNITE, AND PEAT
ASHES
DEPOSITION
COAL
HYDROGENATION
IRON SULFATES
CATALYTIC EFFECTS
MAGNESIUM SULFATES
CATALYSTS
CHEMICAL REACTIONS
COAL LIQUEFACTION
MATERIALS TESTING
PRECIPITATION
PROCESS CONTROL
ALKALINE EARTH METAL COMPOUNDS
CARBONACEOUS MATERIALS
CONTROL
ENERGY SOURCES
FOSSIL FUELS
FUELS
IRON COMPOUNDS
LIQUEFACTION
MAGNESIUM COMPOUNDS
OXYGEN COMPOUNDS
RESIDUES
SEPARATION PROCESSES
SULFATES
SULFUR COMPOUNDS
TESTING
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
010403* - Coal & Coal Products- Hydrogenation- (-1987)
010405 - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
010600 - Coal
Lignite
& Peat- Properties & Composition