Thermal component of residuum conversion in two-stage liquefaction

Conference · Sun Jan 01 04:00:00 EST 1984

OSTI ID:5544057

Stiegel, G J; Cillo, D L; Mima, J A; Tischer, R E; Narain, N K

The objectives were to determine the effects of thermal reactions on the overall conversion of residuum and the removal of heteroatoms, as well as to ascertain the extent of hydrogen transfer between various fractions of the feedstock under thermal reaction conditions. To accomplish these objectives, solvent from the Wilsonville ACLTF was hydrotreated to different levels and reacted thermally with deashed residuum. Detailed analyses of feed and products were performed to ascertain the effects of thermal reactions. From the experimental results obtained, the following conclusions can be made: (1) Hydrogenation of the solvent fraction of the hydrotreater feed does not enhance conversion of the residuum nor does it result in the transfer of hydrogen to the residuum. (2) Higher reaction temperatures enhanced the removal of sulfur and the production of lower-boiling phenolic compounds. All other conversions are relatively constant as a function of temperature. Although complete data at the higher reaction temperatures are not yet available, it does not appear that any significant differences other than those already discussed will result. All data reported thus far indicate that in the absence of a catalyst, whether it be a supported-metal catalyst, pyrite, or coal itself, little conversion occurs, and that any conversion of the residuum must occur catalytically rather than thermally. 1 fig., 20 tabs.

• Research Organization: USDOE Pittsburgh Energy Technology Center, PA
• OSTI ID: 5544057
• Report Number(s): CONF-8410169-2; ON: DE85013452
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COAL LIQUEFACTION
COAL LIQUIDS
DATA
DEASHING
DENITRIFICATION
DESULFURIZATION
DIAGRAMS
ELEMENTS
EXPERIMENTAL DATA
FLOWSHEETS
FLUIDS
FRACTIONATION
HYDROGEN TRANSFER
HYDROGENATION
INFORMATION
INFRARED SPECTRA
LIQUEFACTION
LIQUIDS
METALS
MOLECULAR WEIGHT
MOLYBDENUM
NICKEL
NMR SPECTRA
NUMERICAL DATA
ORGANIC SOLVENTS
RESIDUES
SEPARATION PROCESSES
SOLVENTS
SPECTRA
TEMPERATURE EFFECTS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
TSL PROCESS
VERY HIGH TEMPERATURE
YIELDS