christian louboutin pas cher Dalian Taishan PFBC-C

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Dalian Taishan PFBC-CC cogeneration system calculation program

1 ----------- island one by one system for the environmental temperature and the relationship between the amount of auxiliary air 6O @ 12a09D1 (10 Circuit 2 low pressure air compressor Robinson mouth inlet air volume and 3.2 Auxiliary Air Volume the impact of excess air can be seen. Because of the limited amount of inlet air compressor, the system can not be too much excess air. study the changes in excess air coefficient song 1.I5 to 1.23, when the heat input to 250Mw system parameters change. Figure 3, Figure 4 shows the corresponding excess air and system parameters. It can be seen from Figure 3,[link widoczny dla zalogowanych], with the excess air increases, the amount of compressor inlet air, auxiliary air volume and water temperature of the process have increased, but total system power output decrease slightly. from the 67MW reduced to 65.9MW. As shown in Figure 4 the increase of excess air, PFBC Island, less efficient, mainly due to increased gas makes the gas turbine power increases, the turbine power is reduced, the reduce the rate of larger, lower output power of the whole system. 3FB PFB boiler bed temperature of bed temperature in normal operation constant, the running order to study the best bed temperature. on the bed temperature effect on the system have also been study, take the excess air coefficient is 1.15. Figure 5 Figure 7 shows the system heat input 250Mw,[link widoczny dla zalogowanych], the bed temperature increased from the 840 ℃ 880 ℃ when the system parameters,[link widoczny dla zalogowanych], and changes. Figure 5 shows that only reduce the steam cycle can use heat (from l79.4Mw reduced to l74.9MW) bed temperature to rise. As bed temperature, the steam turbine power output slightly decreased by the 51.47MW to 51.0lMw, gas turbine power from l6. 51MW increase l7.12Mw,[link widoczny dla zalogowanych], was that the relative increase in total system power by the 6798Mw slightly tongue: ¨: Purse ¨? ∞ Mount base closure Meng r contradictory screen _055m5S. Power System Engineering Volume 17, 2001 increased slightly 68.13Mw that at this time to increase gas turbine power dominated. had deposited excess air t air line from the Department of drum g2.4 8g6 g20 bed at a moth on buildings, ℃ Figure 6 employed the influence of temperature on the system parameters to be seen in Figure 6 out, as the bed temperature, the gas turbine power matching the needs of low-finale, compressor inlet air volume increased, supporting the process of the air decreased, lowering the bed boiler. Figure 7 shows that with the increase of bed temperature , boiler feed water temperature, reducing the amount of steam boiler outlet. calculations show that, although the PFB boiler efficiency decreases slightly, but the power generation efficiency of the system or by a slight increase to 37.9%, 38.2% did not consider the secondary time external air compressor to reduce power due to the reduction. 3.4Ca / S molar ratio of calculation to take the heat input 264MW, with the Ca, S molar ratio from 1.5 to 3.5, corresponding to the amount of fly ash from 2 1 .74 price increase to 3.05 'dh, slag bed to 1.25 from 1.13 correct, loss of ash by the heat input of physical maturity of 0.31% to 0.34%. turbine power to maintain 17.17MW unchanged. boiler outlet steam from the 280.2t / h reduced to 277.5t / h. The corresponding turbine power from 54.39Mw reduced to 53.7Mw. the whole system of power generation efficiency decreased slightly, from 27 .08% to 26.82% which, in the desulfurization efficiency permits, try to choose low Ca / S molar ratio. j :,{:,, difference. 1 ? 61zn.i '... ... at mouth level bed Tu Ju , ℃ Figure 7 Guo, Department of bed temperature on the parameters of 4 Conclusions (1) by dry feeding system. auxiliary process air is essential. its role not only for air transportation technology systems to supplement the amount of combustion air due to . More importantly, the system in order to increase the amount of flue gas combined cycle system to meet the needs of coordination, the main gas turbine low pressure stage to match the balance of power. auxiliary air volume and compressor inlet air volume between low-level matching to be careful. (2 ) excess air ratio should be the appropriate choice. As the amount of air compressor inlet restrictions,[link widoczny dla zalogowanych], the system can not be too much excess air. when the excess air ratio increases the total power output decreases, where the combustion conditions permit, the excess air ratio should be appropriate small parameter . as 1.15. (3) With the increase of bed temperature, power generation efficiency of the system increased slightly, the system in the desulfurization efficiency and corrosion conditions permit, high bed temperature should be selected PFB bed temperature should generally be limited to around 870 ℃ (4). desulfurization requirements are met, try to choose low Ca / S molar ratio. Estuary References Zhang Zherui 15oM generous commercial demonstration PFBC ~ C power plant thermal parameter analysis and technical and economic evaluation [D] Southeast University: 1996 Editor: Wen Chang; Dan garlic
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