Recycle slurry oil characterization. Quarterly report No. 3, April 1-June 30, 1981

Technical Report · Thu Oct 01 04:00:00 EDT 1981

DOI:https://doi.org/10.2172/5936360· OSTI ID:5936360

Burke, F. P.; Winschel, R. A.

We received 69 samples of H-Coal PDU 10 recycle oils. All hydroclone overflow (HO) samples have been distilled, THF extracted and ashed. All HO soluble resids have been analyzed by solvent fractionation and the distillates by /sup 1/H-NMR. All clean oil tank (COT) samples have also been analyzed by /sup 1/H-NMR. Selected COT and HO distillate samples were analyzed by GC/MS, microautoclave (MAC) extractions and by fluorine derivatization followed by /sup 19/F-NMR. Selected HO soluble resids were analyzed by /sup 1/H-NMR. We conclude the following. Recycle distillates from PDU 10 (Wyodak, Syncrude) are extremely paraffinic, even able to form wax crystals at room temperature. The paraffin content of PDU 10 recycle distillates increased after day 20 of the run paralleling decreasing solvent quality as determined by /sup 1/H-NMR and MAC. The declining aromaticity of the recycle distillates over the end of PDU 10 is not a result of increased hydrogenation, but probably results from a decreasing removal of paraffins from the distillate recycle solvent. We have received 116 Lummus SCT, ASDA, and LC-Fining samples as of 9/15/81. As applicable, all samples have been distilled, THF extracted, ashed and analyzed by /sup 1/H-NMR and solvent fractionation. We conclude the following: The solvent quality of the distillate portion of the TSL pasting solvent is very good. The first stage (short contact time or SCT unit) product quality, as preasphaltene content, is unaffected by space velocity over the range 115 to 190 lb/hr/ft/sup 3/. There appears to be no chemical alteration or physical fractionation of the 850/sup 0/F/sup +/ components during their transit through the antisolvent deashing (ASDA) unit. The coal conversion to THF solubles obtained in the process does not all occur in the first stage. In the LC-Finer operations with Wilsonville SRC feeds, low severity operation maintained product selectivity longer than high severity operation.

• Research Organization: Conoco Coal Development Co., Library, PA (USA). Research Div.
• DOE Contract Number: AC22-80PC30027
• OSTI ID: 5936360
• Report Number(s): DOE/PC/30027-14; ON: DE82002154
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
ALKANES
AROMATICS
CHEMICAL ANALYSIS
CHROMATOGRAPHY
COAL LIQUEFACTION
COAL LIQUIDS
DATA
DEASHING
EXPERIMENTAL DATA
EXTRACTION
FLUIDS
FLUORINE 19
FLUORINE ISOTOPES
FRACTIONATION
FUNCTIONAL MODELS
GAS CHROMATOGRAPHY
H-COAL PROCESS
HYDROCARBONS
HYDROGEN 1
HYDROGEN ISOTOPES
HYDROXY COMPOUNDS
INFORMATION
ISOTOPES
LC-FINING
LIGHT NUCLEI
LIQUEFACTION
LIQUIDS
MAGNETIC RESONANCE
NUCLEAR MAGNETIC RESONANCE
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANIC SOLVENTS
PHENOLS
PROCESS DEVELOPMENT UNITS
RECYCLING
RESONANCE
SEPARATION PROCESSES
SOLVENT EXTRACTION
SOLVENTS
STABLE ISOTOPES
THERMOCHEMICAL PROCESSES
TSL PROCESS