Effects on liquefaction of recycling heavy SRC. SRC-I quarterly technical report. Supplement July-September 1980

Technical Report · Fri Jun 01 00:00:00 EDT 1984

DOI:https://doi.org/10.2172/7090541· OSTI ID:7090541

Kang, D.; Givens, E. N.

To avoid the possibility of solvent shortages in the Demonstration Plant, studies are continuing to determine if recycling SRC will generate an increased yield of recycle solvent and maintain adequate solvent quality for the design plant. We hope also to determine if major operational problems may develop with SRC recycle. The present study used processing mixtures of Kentucky No. 9 coal, solvent, and heavy solvent-refined coal (HSRC). To ascertain the effects of HSRC on coal liquefaction, process runs were made with HSRC/solvent, coal/solvent, and coal/HSRC/solvent. The HSRC was composed of 1% oils, 44% asphaltenes, and 55% preasphaltenes; its hydrogen content was lower than that of the LSRC produced during the same run (5.8 vs. 6.8%). A systematic study of HSRC recycle required the use of solvents with varying properties, so two solvents with different hydrogen contents, creosote oil (CO, hydrogen poor) and hydrotreated creosote oil (HTCO, hydrogen rich) were initially examined. Using both CO and HTCO as solvents clarified many of the results from the HSRC recycle runs. HSRC was found to be highly temperature-sensitive, both alone and as a solvent component in the coal slurry feed. CO has better solvency of HSRC than HTCO, although it contains less donatable hydrogen. These characteristics favor a substantial decrease in optimal process temperature yet drastically improve overall yield distribution. 2 references, 24 tables.

• Research Organization: International Coal Refining Co., Allentown, PA (USA)
• DOE Contract Number: AC05-78OR03054
• OSTI ID: 7090541
• Report Number(s): DOE/OR/03054-1-Suppl.; ON: DE84015108
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
CHEMICAL REACTIONS
COAL LIQUEFACTION
COAL LIQUIDS
CONSUMPTION RATES
CREOSOTE
DATA
ELEMENTS
EXPERIMENTAL DATA
FLUIDS
FUELS
HYDROGEN
HYDROGENATION
INFORMATION
LIQUEFACTION
LIQUIDS
NONMETALS
NUMERICAL DATA
ORGANIC SOLVENTS
RECYCLING
SOLVENT-REFINED COAL
SOLVENTS
SRC PROCESS
THERMOCHEMICAL PROCESSES
YIELDS