Coal liquefaction pilot plant, Cresap, West Virginia. Monthly technical progress report, June 1978

Technical Report · Tue Aug 01 04:00:00 EDT 1978

DOI:https://doi.org/10.2172/6502198· OSTI ID:6502198

For a 109-hour period hydroliquefaction was in stable operation on a recycle extract feed stock. The section was brought to stable operation on a 50% Doxoil--50% topped solvent feed. The D-A601D reactor had a catalyst charge, while the D-A601A was used as a feed preheater and stabilizer for the feed stock. During the run the concentration of extract in the feed was increased from 21% to 45% while reaction temperatures increased by 35/sup 0/F, from 745/sup 0/F to 780/sup 0/F. Desulfurization as high as 80% was experienced. Disappearance of ''extract'' (defined as process material boiling at 825/sup 0/F or higher) was about 27%. Over 7000 gallons of heavy fuel oil was produced with average sulfur and ash contents of 0.3% and 0.13%, respectively. This run 010 demonstrated that the stable operation can be achieved and maintained for a prolonged period. In addition, processing conditions have been established which provide a firm basis for setting conditions for future runs. The major problem continued to be the unreliability of control instruments monitoring liquid streams. Efforts during the run rather conclusively identified the key problem as inadequate liquid purge through the impulse lines. A limited test installation will provide additional information relating to this problem during the next operating period. Improvements in monitoring catalyst bed ebullation have been made through installation of new Kay--Ray nuclear density detectors on the D reactor and a smaller venturi flow element on the recycle liquid stream to give more sensitive monitoring of conditions affecting bed ebullation. Performance of hydrogen compressor JC-A900A has been improved with the installation of modified valves in the fourth and fifth stages. A five-day life presently can be expected. Further improvement is hoped for with other valves now on order.

• Research Organization: Fluor Engineers and Constructors, Inc., Irvine, CA (USA)
• DOE Contract Number: EX-76-C-01-1517
• OSTI ID: 6502198
• Report Number(s): FE-1517-68
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
CHEMICAL REACTIONS
COAL EXTRACTS
COAL LIQUEFACTION PLANTS
COMPRESSORS
CONTROL EQUIPMENT
EQUIPMENT
FLOW REGULATORS
FUNCTIONAL MODELS
HYDROGENATION
INDUSTRIAL PLANTS
OPERATION
PERFORMANCE TESTING
PILOT PLANTS
REPAIR
TESTING
VALVES