Discussion in Leuna on experiences upon instituting usage of RM10927. [Preheater precipitation problems]

Technical Report · Sat Sep 06 04:00:00 EDT 1941

OSTI ID:7307588

Schirrmacher,

The changeover from molybdenum catalyst RM11002 to iron catalyst RM10927 caused difficulties at several liquefaction plants, in the liquid phase. In Leuna, asphalt decomposition became worse. In Welheim, there were difficulties caused by precipitation of solids in the preheater, probably because the new catalyst could not hydrogenate the pitch asphalts at the temperature of the preheater, so the unchanged asphalt precipitated out. (In contrast, RM11002 could bring about hydrogenation even in the preheater.) Leuna had suggested that using three or four times as much of the new catalyst could avoid the precipitation problem, but it had been found in Welheim that such amounts of catalyst produced unmanageable increases in sludge. Finally, there was some discussion about future production and distribution of the two catalysts.

• Research Organization: Ruhroel, G.m.b.H., Bottrop (Germany)
• OSTI ID: 7307588
• Report Number(s): TOM-8-19-20
• Country of Publication: United States
• Language: German

Related Subjects

01 COAL, LIGNITE, AND PEAT
010403 -- Coal & Coal Products-- Hydrogenation-- (-1987)
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
ASPHALTS
BITUMENS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTIONS
COAL LIQUEFACTION
ELEMENTS
FUELS
GASOLINE
HIGH PRESSURE
HIGH TEMPERATURE
HYDROGENATION
INTERFERING ELEMENTS
IRON
LIQUEFACTION
METALS
MOLYBDENUM
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PITCHES
PRECIPITATION
REFRACTORY METALS
SEPARATION PROCESSES
SLUDGES
TAR
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS