CAJ | 학술논문

对于重型燃气轮机而言，目前其排烟能量利用最常见的方式是配置联合循环，利用下位电站汽轮机及余热锅炉来充分利用燃机排烟余热，但这种配置方式下位电站循环的总体效率不高，一般小于30%；因为考虑到百万级燃煤机组拥有较高的循环热效率，一般大于45%，因此本文提出了将燃气轮机排烟余热利用到百万级燃煤机组热力循环中的思路，以提高能源的利用效率，利用ThermoFlex软件进行热力学计算，并给出了系统集成形式以供参考。以典型1000MW燃煤机组与E级燃气轮机为例，通过合理的系统集成，计算得出可以降低整个联合系统煤耗约2.31g/kWh，达到节能降耗的目的。
대우중형연기륜궤이언，목전기배연능량이용최상견적방식시배치연합순배，이용하위전참기륜궤급여열과로래충분이용연궤배연여열，단저충배치방식하위전참순배적총체효솔불고，일반소우30%；인위고필도백만급연매궤조옹유교고적순배열효솔，일반대우45%，인차본문제출료장연기륜궤배연여열이용도백만급연매궤조열력순배중적사로，이제고능원적이용효솔，이용ThermoFlex연건진행열역학계산，병급출료계통집성형식이공삼고。이전형1000MW연매궤조여E급연기륜궤위례，통과합리적계통집성，계산득출가이강저정개연합계통매모약2.31g/kWh，체도절능강모적목적。
For heavy gas turbine, currently the most common way of the gas turbine flue gas energy utilization is to configure the combined cycle, using steam turbine and HRSG to take full use of the gas turbine flue gas energy, but the overall efficiency of the lower power plant cycle under this configuration is low , generally less than 30%;considering that the 1000MW coal-fired units have a higher thermal efficiency, generally greater than 45%, so this paper presents the gas turbine flue gas heat utilization to the 1000MW coal-fired units thermodynamic cycle in order to improve energy efficiency, and gives system integration forms by using the ThermoFlex software. Take typical 1000MW coal-fired units and E-class gas turbine for example, through reasonable system integration, calculated the overall coal consumption of the combined system can be reduced about 2.31g/kWh.