C - Chemistry – Metallurgy – 10 – L
Patent
C - Chemistry, Metallurgy
10
L
44/4
C10L 9/10 (2006.01) B01D 53/34 (2006.01)
Patent
CA 1187283
Abstract of the Disclosure A method of increasing the efficiency of a cyclone- fired boiler which uses high sodium lignite as fuel. The fuel produces ash deposits on heat transfer surfaces within the boilers, and in accordance with the method, powdered limestone is periodically injected into the firebox of the boiler in a quantity and for a time period such that the limestone is heated to a temperature in the range of from about 2200°F to about 2700°F and reacts with ash deposits in the boiler to form layers thereon. The layers so formed have a higher ash fusion temperature than the unreacted deposits and cause the resulting composite deposit to be more friable whereby the deposit can be removed using con- ventional soot blower apparatus.
421136
Conoco Inc.
Ridout & Maybee Llp
LandOfFree
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