Modification of feed/effluent flow work exchangers for slurry service and power recovery in coal liquefaction processes
New features for flow work exchangers leading to preparation of a recent patent application by the US Department of Energy are discussed. Process and equipment modifications necessary for application of modified flow work exchangers in coal liquefaction processes are reviewed. A discussion is provided on flow work exchanger-like devices such as the Pipefeeder and the Hydrohoist. (A Hydrohoist is now used in a coal-residual oil hybrid gasification pilot plant in Japan). The benefits in minimizing the use of or elimination of critical and problem equipment in conventional coal liquefaction plants such as pressure letdown valves and large high head slurry pumps are compared with the most critical problems with slurry feed/effluent flow work exchangers. Performance of disc type slurry valves which are being considered for flow work exchangers in slurry service is discussed. A preliminary assessment of the cost/benefits of power recovery in coal liquefaction utilizing feed/effluent work flow exchangers is discussed. 7 figures, 2 tables.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 5990713
- Report Number(s):
- Y/EN-511; CONF-811101-15; ON: DE82004114
- Resource Relation:
- Conference: Winter annual meeting of the ASME Technology and Society Division, Washington, DC, USA, 15 Nov 1981
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
COAL LIQUEFACTION
ENERGY RECOVERY
PUMPING
COST BENEFIT ANALYSIS
FLOWSHEETS
FLUID FLOW
SLURRIES
VALVES
CONTROL EQUIPMENT
DIAGRAMS
DISPERSIONS
EQUIPMENT
FLOW REGULATORS
LIQUEFACTION
MIXTURES
RECOVERY
SUSPENSIONS
THERMOCHEMICAL PROCESSES
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
320303 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes