Date: Thu, 20 Nov 1997 19:12:36 GMT Server: NCSA/1.5.2 Last-modified: Wed, 09 Jul 1997 15:10:43 GMT Content-type: text/html Content-length: 9287
ENCOAL CorporationENCOAL Corporation operates a clean coal technology plant in cooperation with the U.S. Department of Energy. Using the "Liquids From Coal" process developed in connection with SGI International, ENCOAL converts each ton of sub-bituminous or lignite coal into three products:
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The ProductsProcess Derived Fuel (PDF): The solid product from the LFC process is similar to a low to medium volatile bituminous coal. The process leaves PDFTM with a much higher heating value and lower moisture and sulfur content than the original sub-bituminous feed coal, while retaining the parent coal¹s low ash fusion temperatures. The combustion and handling properties of PDFTM compare favorably to those of the parent coal. Typical PDF Qualtiy Comparison |
Feed Coal | ||||
Heating Value (Btu/lb.) | 8,300 | 11,400 | ||
SO2 (#/MMBtu) | 1.2 | .8 | ||
H2O (% wt.) | 30 | 8 | ||
Ash (% wt.) | 5 | 8.5 | ||
Volatiles (% wt.) | 29 | 20 | ||
Fixed Carbon (% wt.) | 36 | 66 | ||
Sulfur (% wt.) | 0.45 | .50 | ||
Ash Fusion Temp. (°F) | 2,220 | 2,220 |
Coal Derived Liquid (CDLTM): The liquid product is essentially a coal-derived hydrocarbon with low sulfur No. 6 fuel oil, a product widely used in industrial boilers. Upgrading the CDLTM to be a good feed stock for certain high-value specialty chemicals production and transportation fuels appears both technically feasible and economically attractive. Modifications to the ENCOAL plant are planned to produce these upgraded products in the near future. Typical CDL Quality Comparison |
CDL | Low Sulfur Industrial Fuel |
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API Gravity (°) | 2 | 5 | ||
Sulfur (%) | 0.3 | 0.8 | ||
Nitrogen (%) | 0.6 | 0.3 | ||
Oxygen (%) | 6.2 | 0.6 | ||
Viscosity @ 122°F (cs) | 88 | 420 | ||
Pour Point (°F) | 80 | 50 | ||
Flash Point (°F) | 165 | 150 | ||
MBtu/gal | 140 | 150 |
The Facility The site of the LFC demonstration plant is
adjacent to Triton Coal Company's Buckskin Mine, 10 miles north of Gillette,
Wyo. Triton provides a ready supply of sub-bituminous coal and numerous
other services for the project.
The ENCOAL Advantage The products of the LFC process offer users fuel
alternatives capable of lowering emissions and enhancing the environment. In
many cases, emission reductions will result in little or no cost increase to the
consumer, a factor that makes the process attractive to electric power
consumers.
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