Process development for improved SRC options. Kerr-McGee Critical Solvent Deashing and Fractionation Studies. Final report

Technical Report · Wed Jul 01 04:00:00 EDT 1981

OSTI ID:6314376

Baldwin, R A; Davis, R E; Gillham, L D; Janka, R C; Leonard, R E; Rhodes, D E

The SRC-1/2 Process, a coal liquefaction process which includes Kerr-McGee Critical Solvent Deashing (CSD), was demonstrated in a blocked-out fashion in continuous bench-scale units. This work demonstrated that conventional SRC-I as well as Short-Residence-Time vacuum bottoms could be successfully deashed and fractionated and that the fractionated portion of the soluble coal product, Light SRC, could be added to liquefaction solvent to improve its quality. An amount of Light SRC equivalent to that which was initially added to liquefaction solvent was recovered in the CSD Process in most cases to maintain Light SRC recycle. Light SRC balance is dependent upon material balance restraints, along with limitations in the CSD Process to recover the Light SRC. However, these restraints were found to be satisfied over a wide range of liquefaction severities. Other CSD Bench-Scale work included studies directed toward increasing the recovery of soluble coal products and determining the operating restraints required to produce Light SRC. This work utilized feeds obtained from the Wilsonville SRC Pilot Plant. It was found that soluble coal product recovery was inversely proportional to the first-stage CSD temperature and that the fractionation step was sensitive to deashing solvent to feed ratio. The SRC-1/2 Process was not, however, fully integrated and therefore these results are not necessarily indicative of steady-state conditions. Integrated experiments are required to verify these findings.

• Research Organization: Kerr-McGee Corp., Oklahoma City, OK (USA)
• OSTI ID: 6314376
• Report Number(s): EPRI-AP-1932; ON: DE81903785
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402 -- Coal
Lignite
& Peat-- Purification & Upgrading
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
BENCH-SCALE EXPERIMENTS
COAL LIQUEFACTION
COAL LIQUIDS
DATA
DEASHING
EXPERIMENTAL DATA
FLUIDS
FRACTIONATION
FUELS
INFORMATION
LIQUEFACTION
LIQUIDS
MATERIAL BALANCE
NUMERICAL DATA
RECYCLING
SEPARATION PROCESSES
SOLVENT-REFINED COAL
SRC PROCESS
THERMOCHEMICAL PROCESSES