CAJ | 학술논문

为提高火力发电厂的供电效率,提出燃机与锅炉机组的耦合系统,并建立该耦合系统性能计算模型。经过对耦合系统性能的预测分析可知：排烟温度对系统的性能影响较大,在设定的130℃排烟温度条件下,耦合了燃机的电厂效率提高,供电煤耗降低。在一定的最高燃机工作温度条件下,进入锅炉机组总风量与流经燃机的空气流量与之间的比值有最佳值。以燃机最高工作温度700℃为例,耦合系统可以提高机组效率0.5%以上,其发出的功率可以增加电厂供电量超过4%,在考虑了机组热效率以及低温腐蚀等因素以后,除了抵消风机电耗以外,最佳的供电量增加幅度为1.64%,此时对应着最佳的锅炉机组总风量与流经燃机空气流量的比值,其大小为4.29。
위제고화력발전엄적공전효솔,제출연궤여과로궤조적우합계통,병건립해우합계통성능계산모형。경과대우합계통성능적예측분석가지：배연온도대계통적성능영향교대,재설정적130℃배연온도조건하,우합료연궤적전엄효솔제고,공전매모강저。재일정적최고연궤공작온도조건하,진입과로궤조총풍량여류경연궤적공기류량여지간적비치유최가치。이연궤최고공작온도700℃위례,우합계통가이제고궤조효솔0.5%이상,기발출적공솔가이증가전엄공전량초과4%,재고필료궤조열효솔이급저온부식등인소이후,제료저소풍궤전모이외,최가적공전량증가폭도위1.64%,차시대응착최가적과로궤조총풍량여류경연궤공기류량적비치,기대소위4.29。
In order to improve the power supply efficiency of the thermal power plants,a system coupling of gas turbine and boiler was proposed,and a performance model of the coupled system was established.The prediction shows that the performance of the system is influenced significantly by the temperature of exhaust gas.At temperature of exhaust gas of 130 ℃,the thermal efficiency of the coupled system improves,and the coal consumption of the system reduces correspondingly.At certain maximum operating temperature of gas turbine,the ratio of the total air volume into the boiler and the air volume into gas turbine has an optimum value.The efficiency of the coupling system could improve more than 0.5% when the maximum operating temperature of gas turbine is 700 ℃,the increasing of power supply could be up to 4% at the same operating temperature of gas turbine.Taking into account of the unit thermal efficiency,cold end corrosion and the other factors,the best increasing of power supply is 1.64% by deleting the power consumption of fan.At same condition,the optimum ratio of the total air volume into boiler and the air volume into the gas turbine is about 4.29.