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Show Field evaluation. While the performance of the experimental burner is encouraging, to be of practical value the burner must be evaluated on actual boilers operating over normal duty cycles. The evaluation must include not only emissions measurements but also system operability and thermal performance. Projects for this evaluation have been started for both industrial and utility boilers. The scope of both projects is virtually identical and the major difference is in boiler size and duty cycle. Industrial boilers are defined as ranging from 35 to 175 thermal MW (nominally equivalent to 100,000 to 500,000 lb of steam per hour); utility boilers are defined as going up to 300 electrical MW. The major tasks are as follows: a. The Program Definition Task provides for host boiler selection engineering design of a commercial prototype low N0X burner, definition of the required measurement plan, and an overall program plan. b. The Burner Prototype Construction and Testing Task provides for construction of one prototype of the burner and testing in the large watertube simulator used in the burner development work. This testing will allow comparison of experimental burner results, optimization of conditions over the expected operating range, and resolution of mechanical problems. In addition, an example of the commercial burner from each host boiler will be tested in the LWS to provide a direct performance comparison. c. The Boiler Baseline Characterization Task provides for an analysis of the emission and thermal performance of each host boiler prior to modification as a basis of comparison. This includes operation over a wide range of conditions and with operating modifications to establish the minimum N0X achievable. d. The Burner Installation Task provides for fabrication of the required number of burners based on Task 2, above, and installation on each boiler. It also includes instrumentation for performance evaluation, corrosion panels at appropriate locations, and a TV camera for remote observation of the flame zone. Following installation, the boiler is to be operated over a range of conditions and an optimum operating point is to be established. 3-25 25 |