Process for modifying coal so as to reduce sulfur emissions

Details Process for modifying coal so as to reduce sulfur emissions Process for modifying coal so as to reduce sulfur emissions

2006-06-06

2006-06-06

McAvoy, Ellen M. (Department: 1764)

Fuel and related compositions

With combustion improver

Sulfur bindant

C044S503000, C044S504000, C044S622000

Reexamination Certificate

active

07056359

ABSTRACT:
A method of manufacturing a coal product having reduced sulfur emissions including the steps of grinding coal into a powder form having a desired particle size; blending the ground coal with hydrated lime; adding water to the blend so as to have a moisture content of between 10 and 30 weight percent and drying the water-added blend so as to have a desired reduced moisture content. The desired reduced moisture content is less than 1% of the total weight of the coal powder and the hydrated lime. The step of drying includes heating the water-added blend to a temperature of between 300 and 400° F. in an externally heated oven. Waste heat form a power plant can be used so as to head the blend.

REFERENCES:
patent: 4226601 (1980-10-01), Smith
patent: 4522626 (1985-06-01), Espenscheid
patent: 4824441 (1989-04-01), Kindig

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