C - Chemistry – Metallurgy – 10 – L
Patent
C - Chemistry, Metallurgy
10
L
44/4
C10L 9/10 (2006.01) F23K 1/00 (2006.01)
Patent
CA 1300377
Abstract A method and composition are provided for decreas- ing emissions of sulfur oxides and nitrogen oxides upon combustion of carbonaceous fuel material. In par- ticular, the composition comprises a refined coal, having low ash-forming material and inorganic sulfur content, a sulfur sorbent, a sulfation promoter, and a catalyst for the reaction of sulfur dioxide to sulfur trioxide. Reduced emissions of sulfur oxides are achieved by combusting the composition in an oxygen restricted burner to lessen the effect of sorbent sin- tering while obtaining other advantages associated with mixing a sulfur sorbent with the carbonaceous material prior to combustion. Nitrogen oxides emissions are reduced by use of an oxygen restricted burner which lowers the flame temperature. Nitrogen oxides emis- sions are also reduced by lower flame temperatures resulting from endothermic reactions which are under- gone by the sulfur sorbent and promoter.
584381
Genesis Research Corporation
Gowling Lafleur Henderson Llp
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