Patent ID: 9127228
Filing Date: 2015-09-08
Classification: C10L,F23J,F23K

Abstract:
1. A process for operating a coal-fired furnace to generate heat, comprising: a) providing the coal to the furnace; and b) combusting the coal in the presence of a first slag-reducing ingredient and a second slag-reducing ingredient in amounts effective to reduce slag formation in the furnace, wherein the first slag-reducing ingredient is one or more oxygenated magnesium compounds, wherein the second slag-reducing ingredient is selected from the group consisting of one or more oxygenated calcium compounds, and wherein the coal exhibits an Si/Al ratio of 2.19 to 2.85; a Fe/(Si+Al) ratio of 0.12 to 0.32; and a Ca/(Si+Al) ratio of 0.04 to 0.09.