Process for clean-burning fuel from low-rank coal

Details Process for clean-burning fuel from low-rank coal Process for clean-burning fuel from low-rank coal

1992-10-20

1994-06-21

Niebling, John

Fuel and related compositions

'low-rank' coal

44620, C10L 500

Patent

active

053225309

ABSTRACT:
A process for upgrading and stabilizing low-rank coal involving the sequential processing of the coal through three fluidized beds; first a dryer, then a pyrolyzer, and finally a cooler. The fluidizing gas for the cooler is the exit gas from the pyrolyzer with the addition of water for cooling. Overhead gas from pyrolyzing is likely burned to furnish the energy for the process. The product coal exits with a tar-like pitch sealant to enhance its safety during storage.

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Jacobsen et al., "The Role of Coal Preparation in the Pre-Combustion Control of Hazardous Air Pollutants," Proceedings of American Mining Congress: Coal Preparation, 82-99, Cincinnati, Ohio, May 1992.

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