CAJ | 학술논문

本文指出典型二次再热系统的技术特点,并对二次再热锅炉的关键技术进行分析.二次再热技术可有效地提高火力发电机组的热效率并降低单位发电量CO2排放,且目前技术成熟的铁素体合金材料和奥氏体合金材料能够满足二次再热超临界机组的安全要求.虽然二次再热会使得锅炉、汽轮机和热力系统的结构变得复杂,但是,在我国700℃等级镍基材料解决之前,二次再热技术是提高火力发电机组热效率切实可行的有效手段.
본문지출전형이차재열계통적기술특점,병대이차재열과로적관건기술진행분석.이차재열기술가유효지제고화력발전궤조적열효솔병강저단위발전량CO2배방,차목전기술성숙적철소체합금재료화오씨체합금재료능구만족이차재열초림계궤조적안전요구.수연이차재열회사득과로、기륜궤화열력계통적결구변득복잡,단시,재아국700℃등급얼기재료해결지전,이차재열기술시제고화력발전궤조열효솔절실가행적유효수단.
@@@@The technical characteristics of double-reheat system are proposed and the key technologies for double-reheat boiler are analysed in this paper. The thermal efficiency of the unit could be improved by the applying of double-reheat system and CO2 emission could also be reduced. The Ferrite Alloy and Austenite Alloy which are mature now can meet the requirements for safety operation of double-reheat supercritical units well. Although the structure of boiler, turbine and thermodynamic system will be complicated, the double-reheat technology is a promising method to improve thermal efficiency before the nickel-based materials technology is maturely developed.