Assessment of slurry pressure letdown valve and slurry block valve technology for direct coal liquefaction demonstration and pioneer commercial plants
This report examines the status of the technology of high pressure slurry letdown valves and slurry block valves in coal liquefaction service. All of the demonstration and pioneer commercial direct liquefaction plant designs call for the use of high pressure slurry letdown valves for flow control and slurry block valves for flow isolation. Successful performance and reliability of these valves is a serious concern because of the severity of the process streams and the limited experience and performance data on these valves under such conditions. The objectives of this report are: (1) to examine the existing data base on these valves from the four major direct coal liquefaction pilot plants in the US, (2) to present the recommendations from the pilot plant experience, (3) to examine the specifications for the letdown and block valves in the demonstration/pioneer commercial designs, and (4) to identify the scale-up issues, data gaps, and development and testing needs. 23 references, 20 figures, 7 tables.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6397337
- Report Number(s):
- ORNL/TM-9341; ON: DE85000162
- Resource Relation:
- Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COAL LIQUEFACTION PLANTS
VALVES
DIAGRAMS
TECHNOLOGY ASSESSMENT
COAL LIQUEFACTION
COMPARATIVE EVALUATIONS
DEMONSTRATION PLANTS
DESIGN
EXXON LIQUEFACTION PROCESS
H-COAL PROCESS
MATERIALS
PILOT PLANTS
RECOMMENDATIONS
SPECIFICATIONS
SRC PROCESS
SRC-II PROCESS
CONTROL EQUIPMENT
EQUIPMENT
FLOW REGULATORS
FUNCTIONAL MODELS
INDUSTRIAL PLANTS
LIQUEFACTION
THERMOCHEMICAL PROCESSES
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction