Furnaces – Process – Treating fuel constituent or combustion product
Patent
1984-01-03
1984-08-14
Yuen, Henry C.
Furnaces
Process
Treating fuel constituent or combustion product
110245, 110263, 44 4, F23D 100, F23G 700
Patent
active
044650000
ABSTRACT:
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.degree. F. to about 2700.degree. 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 conventional soot blower apparatus.
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Collins Richard W.
Conoco Inc.
Yuen Henry C.
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