PROCESS FOR OPERATING A FURNACE WITH BITUMINOUS COAL AND METHOD FOR REDUCING SLAG FORMATION THEREWITH

摘要

There is provided a process for operating a coal-fired furnace to generate heat. The process has the steps of 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. In one embodiment, the first slag-reducing ingredient is one or more oxygenated magnesium compounds and the second slag-reducing ingredient is selected from the group consisting of one or more oxygenated calcium compounds, one or more oxygenated silicon compounds, and combinations thereof. In another embodiment, the first slag-reducing ingredient is one or more oxygenated silicon compounds, and wherein the second slag-reducing ingredient is one or more oxygenated aluminum compounds. There are also provided methods for reducing slag formation in a coal-fired furnace. There are also provided methods for treating coal. There are also treated coals.

主权项

1. A process for operating a coal-fired furnace, comprising:
a) providing coal to a coal-fired 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 one of
one or more oxygenated silicon compounds anda combination of one or more oxygenated compounds of aluminum and silicon, 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.