CAJ | 학술논문

神头第二发电厂#1机组配备500MW塔式锅炉。由于设计等方面的原因，该锅炉存在省煤器入口温度设计过低，致使蒸发受热面产汽量不足，导致过热器超温现象严重、排烟温度过高、锅炉效率较低，严重影响了锅炉的整体经济性。近年来，入炉煤质变化过大，对锅炉燃烧及锅炉整体经济性能及安全性能影响更大，需要就过热器超温的问题开展专题攻关研究，达到治理辐射过热器悬吊管泄漏现象的目的，最终实现锅炉效率的提高，实现机组更加经济地运行的目标。文章针对该锅炉所存在的问题，提出了四种改造方案（改造方案A、B、C、D），并对四种方案的改造效果进行了预测。所提出的改造方案对国内存在类似问题的同类锅炉具有较好的参考价值。
신두제이발전엄#1궤조배비500MW탑식과로。유우설계등방면적원인，해과로존재성매기입구온도설계과저，치사증발수열면산기량불족，도치과열기초온현상엄중、배연온도과고、과로효솔교저，엄중영향료과로적정체경제성。근년래，입로매질변화과대，대과로연소급과로정체경제성능급안전성능영향경대，수요취과열기초온적문제개전전제공관연구，체도치리복사과열기현조관설루현상적목적，최종실현과로효솔적제고，실현궤조경가경제지운행적목표。문장침대해과로소존재적문제，제출료사충개조방안（개조방안A、B、C、D），병대사충방안적개조효과진행료예측。소제출적개조방안대국내존재유사문제적동류과로구유교호적삼고개치。
#1 Unit in our power plant is assembled with a 500 MW scale tower type boiler.For the design de?fect of the boiler, the inlet water temperate of the economizer is very low, which leads the under production of steam from the steam generator and, consequently, leads the overheat of the super-heater, extra high tem?perature of the exhaust gas and the low efficiency of the boiler. All those problems have negative impacts on the security and economics of the power plant. Furthermore, the feed coal quality varies greatly in recent years, which has higher adverse impact on the overall security and economy performance of the boiler. Thus, immediate measures are needed to solve the problems of the super-heater overheating and the leakage of its hanger tube so as to achieve the object of highly safe and efficient operation of the Unit. Four retrofit schemes (schemes A, B, C and D) are provided in this work and thermal checking calculation are used to predict the retrofit effect of the four schemes. The retrofit schemesare of reference value for other large scale tower type boilers suffering similar problems.