H-Coal pilot plant block-valve experience through coal run No. 7 in the H-Coal Pilot Plant

Technical Report · Thu Apr 01 04:00:00 EST 1982

OSTI ID:5701355

Qualls, G E

The H-COAL Pilot Plant, located at Catlettsburg, Kentucky, began its operations in the spring of 1980. The plant was designed and constructed based on the H-COAL Process developed by Hydrocarbon Research, Inc. The primary purpose of this Pilot Plant was to test the process and prove its commercial feasibility. Equipment and piping at the plant is available commercially and can easily be scaled up to meet the requirements of a commercial plant. Because of the inherent nature of the coal liquids produced by the process, some equipment problems were anticipated. One such problem area was with block valves, particularly in the high pressure letdown area. Tight shut-off requirements are necessary to provide isolation for removal and maintenance of the letdown valves. Double block valves were provided to insure safe removal and replacement of letdown valves. Problems with these block valves did occur at plant start-up, even before the addition of coal. During hot oil circulation, stem leakage was excessive and valve leak-through prevented isolation of letdown valves. A concerted effort was made to eliminate these problems. Additional efforts were made to locate and obtain alternate block valves for this service. This block valve program in conjunction with a similar letdown valve program has extended the length of run times considerably.

• Research Organization: Ashland Synthetic Fuels, Inc., KY (USA)
• DOE Contract Number: AC05-76ET10143
• OSTI ID: 5701355
• Report Number(s): DOE/ET/10143-13; ON: DE83012487
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
COAL LIQUEFACTION
COAL LIQUEFACTION PLANTS
COATINGS
CONTROL EQUIPMENT
DATA
DESIGN
DIAGRAMS
EQUIPMENT
EROSION
EXPERIMENTAL DATA
FLOW REGULATORS
FLOWSHEETS
FUNCTIONAL MODELS
H-COAL PROCESS
INDUSTRIAL PLANTS
INFORMATION
INSPECTION
LEAKS
LIQUEFACTION
NUMERICAL DATA
PACKINGS
PILOT PLANTS
SPECIFICATIONS
THERMOCHEMICAL PROCESSES
VALVES