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Show Results: The results of Part I determined four burners were required, sized to a maximum of 118 MM Btu/hr with eight (8) inches of burner draft loss. The burners were to be of the axial flow staged fuel design in lieu of the existing register type burners, with two IR flame scanners per burner. With respect to Part II, it was the desire of the TQM team to attempt to modify the existing equipment rather than retrofit with new burners if determined to be feasible. The team's decision was to execute a parallel plan. Design the optimum new axial flow burner first and then attempt, on paper, to modify the design of the existing burner. John Zink was allocated three weeks to achieve this work and the team members would evaluate the results and decide the action to be taken. The work was completed in mid May 1992 and the two designs were evaluated. The TQM team felt the modified burner had merit and may actually have some advantages over the true axial flow burner due to the primary and secondary air registers which could provide added adjustment. The consensus of the TQM team was to build a base burner identical to the one in the boilers and test in the test furnace in Tulsa to duplicate the NOx and flame pattern experienced in the field using an agreed blend for the RFG made up of 40% methane, 25% propane and 35% hydrogen (all by volume). The main concern was the new design required a 24" burner throat (existing was 32"). The agreed schedule required the base bench mark test demonstrated on July 17, 1992, with the modified base burner by August 7, 1992. If successful, modifications in the field would be accomplished on the first boiler on August 28, 1992, with all field testing complete on September 18, 1992. |