Economics of coal water slurry
Conference
·
OSTI ID:45112
Pennsylvania Electric Company and New York State Electric and Gas Company have been developing technology to co-fire coal water slurry (CWS) fuel in large steam generators. Work completed to date includes laboratory scale and pilot scale fine coal cleaning and CWS fuel studies. CWS fuel combustion tests have been conducted using 1.5, 3.5, and 18.5 million (MM) Btu/hour combustors. In addition, a project has been initiated to test the co-firing of CWS with pulverized coal in a 32MWe boiler located at the Seward Power Generating Station. As part of the overall CWS co-firing concept, various economic evaluations of the process have been conducted. This paper discusses the economics of CWS fuel from a utility standpoint for a 100 ton per hour fine coal cleaning and CWS production facility. The economics presented herein have been derived from various cost estimates prepared for Penelec and MYSEG by EBASCO Services, CLI Corporation, and others. The design and cost of the CWS fuel preparation plant is based primarily on the results of pilot plant tests conducted using a three ton per hour fine coal cleaning and CWS preparation plant. The pilot plant demonstrated that a CWS fuel containing 50% solids is economically viable and technically feasible for use in utility boilers. The economics of the process favor utilization of low cost coal fines derived from fine coal streams, operating coal processing plants or coal ponds. Further, the economics favor the use of -100 mesh coal classified from a coarse coal stream and processed into CWS fuel without the use of stabilizers, dispersant or the production of ultra-fine coal by grinding.
- OSTI ID:
- 45112
- Report Number(s):
- CONF-930413--
- Country of Publication:
- United States
- Language:
- English
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