| OCR Text |
Show Table 8 Calculating Condition Case A CaseS CaseC CaseD Items Natural Gas Reburning & Reburning & Unit Conven- Sepa rately- Superheater Superheater tional Fired with Boiler with Assist Superheater Gas MSW Flow t/24h 600 MSW Heating Value (LHV) kcal/kg 2,400 Natural Gas Schematic Flow kcal/kg (13A) 9~930 Diagram Fig. 6 Fig. 7 Fig. 8 SteamCondi tions • Boi ler Pressu re ata 28 65 65 65 Temperature °C 300 279(Saturated) 279(Saturated) 279( Saturated) • Turbine Pressure ata 27 62 62 62 Temperature °C 300 420 420 420 Condenser Pressure ata 0.22 0.22 0.22 0.22 Table 9 Calculation Results Case A CaseB CaseC CaseD Natural Gas Reburning & Reburning & Item Unit Conven- Sepa rately- Superheater Superheater tional Fired with Boiler with Assist Superheater Gas Natural Gas Flow Nm3 / h • Reburning 720 430 • Separately-Fired 1,090 1,380 1,330 Superheater Power Out put KW 11,410 17 690 22,820 21 1 640 Power Increase (1) KW -- 6J 280 11 L 410 10,230 Overall Efficiency % 16.4 21.5 24.3 24.0 Natural Gas % -- 49.9 47.1 50.3 Utilizing Rate (2) (1) Power Increase = ( Power Output - Power Output, Case A) (2) Natural GasUtilizing Rate= (Power Increase x 860)/(Natural Gas Flow x 9,930) 860 = 860kcal - ~- Calorie/Power 9,930 = 9,930kcal/Nm3 --- Natural GasLHV 1 2 |
