Method and apparatus for coal treatment
AssigneeFord, Bacon & Davis, Incorporated
InventorsGerard C. Gambs, Horace P. Morgan
Life of this patent
Estimating the term…
Abstract
Method and apparatus for upgrading subbituminous coal and/or lignite fuel product that does not comply with an applicable SO.sub.x :Btu standard during the combustion thereof. The fuel product is treated at the combustion site to lower the total moisture content thereof from between about 15 and 45 percent to between about 4 and 7 percent. Heavier weight ash particles are removed from the fuel product to lower the sulfur content thereof. The treated fuel product is burned while it is in the 4 to 7 percent total moisture range, thereby meeting the applicable SO.sub.x :Btu standard during the combustion process.
Claims12
The method of upgrading subbituminous coal and/or lignite fuel product non-complying with an applicable SO.sub.x :Btu standard during the combustion thereof, comprising drying said fuel product at the combustion site to lower the total moisture content thereof from between about 15 and 45 percent to between about 4 and 7 percent to concomitantly raise the heating value of said fuel product sufficiently so that said SO.sub.x :Btu standard will be met during the combustion of said fuel product, and thereafter burning said fuel product while it is in the latter total moisture content range.
A method of upgrading the combustion quality of solid particle subbituminous coal and/or lignite fuel product comprising, at the combustion site, drying said fuel particles to reduce the moisture content thereof and concomitantly raise the heating value thereof and removing heavier weight ash particles therefrom to lower the sulfur content thereof, and then burning said fuel particles.
Apparatus for upgrading solid particle subbituminous coal and/or lignite fuel product non-complying with an applicable SO.sub.x :Btu standard during the combustion thereof, comprising means for drying said fuel product at the combustion site, and including separating means for removing heavier weight ash particles from said fuel product prior to the burning thereof to lower the sulfur content thereof.
Dependencies are inferred from the claim text.