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Remediation/Waste Utilization
| Technology: |
Cofiring coal-water slurry with pulverized coal |
| Organization: |
Penn State University (NOTE: GE Energy and Environmental Research Corp. holds a U.S. patent, 6152054, on a technology that sounds very similar) |
| Description: |
A low solids, low viscosity coal-water slurry fuel (CWSF) was formulated and produced from impounded bituminous coal fines. The CWSF is cofired with pulverized coal to reduce NOX emissions |
| Status: |
Demonstrated Research |
| Advantages: |
NOX emissions were reduced up to 26.5% when compared to firing 100% pulverized coal. |
| Limitations: |
N/A |
| Technology: |
Coal Waste to Diesel |
| Organization: |
Waste Management and Processors Inc. |
| Description: |
Coal waste gasification by thermal, chemical conversion to paraffin, then diesel |
| Status: |
Research and Development |
| Advantages: |
By-product may be used like sand for concrete, mortar or plaster. |
| Limitations: |
Pilot plant planned using Sasol process |
| URL: |
http://www.ultracleanfuels.com/html/a31.htm |
| Technology: |
Concrete encasement |
| Organization: |
Contaminated Land Remediation (CCLR), University of Greenwich (United Kingdom) |
| Description: |
Coal slurry is stabilized by encapsulating in cement |
| Status: |
Research |
| Advantages: |
Final product may be used as building material. |
| Limitations: |
Effect of contaminants on structural characteristics, potential for leaching. |
| URL: |
http://www.gre.ac.uk/schools/nri/earth/newcclr/
cclrcrac/cclrcrac.htm |
| Technology: |
Hydraulic dredging |
| Organization: |
Metcalf & Eddy |
| Description: |
Hydraulic dredging of a coal tar deposit and the separation of solids, utilizing double deck vibratory screens, from a slurry consisting of river water, coal tar and sediments. |
| Status: |
Pilot project |
| Advantages: |
Effective removal of coal tar beds from rivers |
| Limitations: |
Process requires large volume of water |
| URL: |
|
| Technology: |
Pneumatic Accelerator |
| Organization: |
Terra Systems, Inc. |
| Description: |
Uses air rather than water to move coal or slurry. |
| Status: |
Patented, not developed |
| Advantages: |
Applications in coal processing and slurry remediation |
| Limitations: |
Small company, extensive development required |
| URL: |
http://www.terasystems.com/ |
| Technology: |
Coal-sawdust fuel mixture |
| Organization: |
CQ Inc |
| Description: |
A coal-sawdust fuel mixture made utilizing the GranuFlow Process, a National Energy Technology Laboratory (NETL) developed technology, that separates and dewaters coal fines from coal slurry |
| Status: |
DOE Research |
| Advantages: |
N/A |
| Limitations: |
N/A |
| URL: |
http://www.netl.doe.gov/publications/press/2000/
tl_solidfuel_scaleup.html |
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