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U.S. Department of Energy
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Plant equipment selection and performance using coal-water mixtures: Final report

Technical Report ·
OSTI ID:6913911
The objective of the TRW project was to generate a data base for equipment selection and design of the front end fuel delivery system for new coal water mixture (CWM) installations and for retrofits of existing fuel oil furnaces to CWMs. The project involved evaluating the performance of pumps and other plant equipment, pipes, fittings, valves, and instruments with CWMs supplied to several commercial vendors. The project also included an evaluation of CWM corrosive and erosive properties, and the correlations of measured CWM physical and rheological properties with observed hydraulic behavior in pipes and fittings. A CWM Test Facility was constructed at the TRW San Juan Capistrano test site. The test facility included both a low pressure loop for adjusting the CWM temperature and a high pressure loop to simulate burner operation. The results of testing CWMs at this facility are documented in this report, along with the design of a CWM supply system for a commercial boiler facility. The major findings from this study are: (1) CWMs can be stored for long periods with remarkable stability; (2) the Metzner-Reed model for homogeneous, non-Newtonian fluids is applicable to CWMs; (3) both the progressive cavity pump and the twin screw are highly suited for CWM service; (4) dependable on-line instrumentation are available for measuring temperature and pressure of CWMs and CWM properties; (5) carbon steel is an acceptable material of construction for most CWM applications; and (6) sufficient test data and operating experience are available for the design of CWM delivery systems for commercial boiler facilities. 13 refs., 43 figs., 16 tabs.
Research Organization:
TRW Space and Technology Group, Redondo Beach, CA (USA). Applied Technology Div.; Stone and Webster Engineering Corp., Boston, MA (USA)
DOE Contract Number:
AC22-82PC50270
OSTI ID:
6913911
Report Number(s):
DOE/PC/50270-T16; ON: DE88004153
Country of Publication:
United States
Language:
English

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