Combined Cycle Steam Generator Gas Side Fouling Evaluation.
Abstract
Liquid-fueled gas turbines can produce serious steam generator fouling in gas turbine combined cycle applications and other waste heat recovery systems as a result of combustion system generated soot particles. In addition, standard soot blowing practices are not always compatible with the advanced, compact matrix designs sometimes required for minimum package size applications. In Phase I, an experimental program was conducted on both test rigs and engine hardware designed to evaluate the effects on gas side soot fouling rates of various operational parameters such as soot loading, temperature, and velocity. Results showed that the self-cleaning concept, whereby soot deposits are removed by curtailing steam generator water flow and raising fin/tube temperatures to that of the prevailing exhaust gas, is a viable alternative to standard soot-blowing practice. The results, however, also showed inconsistencies in the self-cleaning threshold temperature between the various rigs. Phase II of this program was conducted to resolve these inconsistencies and, more specificaly, to define a cleaning schedule for a LM-2500 combined cycle. The results lend further support to the self-cleaning concept and show that at full load a LM-2500 combined cycle system would be expected to clean itself within an hour after dryout. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1980
- Accession Number
- ADA092797
Entities
People
- A. J. Kubasco
- P. B. Roberts