| OCR Text |
Show inspection (site visit) of the boiler, and a review of existing equipment arrangement drawings provided by the Russian/ Ukrainian team. This preliminary design is shown schematically in Figure 7. Final System Design Agreement was reached (November 1990) on the final reburn system design based on several technical meetings held with the U.S., Russian, and Ukrainian teams. The Russian and Ukrainian team, responsible for final detailed design, fabrication, installation, and operation of the system, agreed to proceed with the project, basing the final design largely on the preliminary design provided by the U.S. team. Flue gas Recirculation Nozzles Burnout Air / injectors Rebum Fuel * Injectors Auxiliary Burners Main Coal Burners Figure 7: Preliminary Reburn System Design The Russians and Ukrainians recommended certain deviations from the preliminary design. These deviations are highlighted in Figure 8. Most of the changes were recommended by the Russian/Ukrainian team in order to mirrimize retrofit complexity and cost. It was jointly agreed that the majority of these deviations between the preliminary design and final design would have an insignificant impact on system performance from either an emissions or a thermal performance standpoint. Most significantly, the Russian/Ukrainian team decided to retrofit an aerodynamic "nose" (Figure 8) into the -<3+25* £>- Tilt n•~* Tilt <£ Burner £ Burner •FGR NozzUs (6} Tertiary Air •(Burnout) Nozzles (6 Front, 6 Rear) Reburn Fuel and FGR ln|ectors (6 Front, 6 Rear) >Maln Coal Burners (8 Front, 8 Rear) c -15*. .-15" Fixed Fixed P-15* -IS'. Flxtd Fixed (Burner £ Burner *~+ FGR Nozzle* (5) Nozzles (S Front, S Rear) FGR ln|ectors (S Front, 5 Rear) \M*in Coal Burners ^ (8 Front. 8 Rear) Preliminary Proposal Final Design Arrangement Figure 8: Design Arrangements 10 |
