Thomas J Scheib

US Patent:

45398402, Sep 10, 1985

Filed:

Nov 14, 1983

Appl. No.:

6/551455

Inventors:

John H. Klatt - Laurel MD
Thomas J. Scheib - Chesterland OH

Assignee:

The Babcock & Wilcox Company - New Orleans LA

International Classification:

G01L 326

US Classification:

73112

Abstract:

A method of identifying a parameter of a model for a rate of loss of boiler efficiency due to a sootblowing operation, in a boiler 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 sootblowing for the heat trap in question, measuring a change in efficiency due to the sootblowing operation and calculating the parameter using an equation. According 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. The technique is extendable to individual sootblowers within a heat trap by using fouling rate index rather than overall boiler efficiency.