Method of conditioning fireside fouling deposits using large par

Furnaces – Process – Treating fuel constituent or combustion product

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44 4, 110344, 110347, F23B 700

Patent

active

045775664

ABSTRACT:
In a coal fired boiler of the type having a combustion zone in which said coal is fired, a convection zone located downstream from said combustion zone and having a plurality of heater tubes disposed therein adapted to heat water or steam disposed therein, and in which convection zone combustion residues emanating from said coal have a tendency to stick to or agglomerate upon said tubes, a method of decreasing said tendency to stick or agglomerate, comprising burning said coal in the presence of an additive consisting essentially of amorphous silica particles, substantially all of said particles being greater than about 30 microns in diameter.

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"External Corrosion and Deposits: Silica-Based Additives" (p. 162).
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