F - Mech Eng,Light,Heat,Weapons – 22 – B
Patent
F - Mech Eng,Light,Heat,Weapons
22
B
122/1
F22B 37/52 (2006.01) F22B 37/56 (2006.01)
Patent
CA 1231603
ENHANCED SOOTBLOWING SYSTEM ABSTRACT OF THE DISCLOSURE A method of identifying a parameter of a model for a rate of loss of boiler efficiency due to a soot- blowing operation, in a boiler or other convection heat transfer device having a plurality of heat traps, comprises measuring a time since a last sootblowing operation in the heat trap in question, measuring an overall boiler efficiency at the beginning of soot- blowing for the heat trap in question, measuring a change in efficiency due to the sootblowing operation and calculating the parameter using an equation. Accord- ing to the equation, the ratio of efficiency change over overall boiler efficiency equals the time factor since the last sootblowing operation times the parameter minus a summation of factors for each of the other heat traps and their associated sootblowing operations. A method is also disclosed for enhancing a sootblowing operation wherein, with a plurality of heat traps, sootblowing is performed in an upstream neat trap in preference to a downstream heat trap, when both heat traps are near a fouled condition which would require sootblowing. This prevents premature fouling of a downstream heat trap which has recently been cleaned by soot blown off an upstream heat trap.
458901
Babcock & Wilcox Company The
Ridout & Maybee Llp
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