CAJ | 학술논문

介绍了我国投运的首台采用再热蒸汽短路调温技术的745t/h循环流化床锅炉的设计与运行情况,并探讨了锅炉运行条件对减排NOx和SO2的影响.由性能测试结果可知,过热器、再热器、旋风分离器和空气预热器设计合理;再热蒸汽短路调温技术能够满足再热器调温要求;在机组带220MW电负荷稳定运行时,锅炉热效率平均试验值和平均修正值分别为90.72%和90.56%;锅炉完全具备最大连续出力745t/h和最低不投油稳燃出力连续运行的能力;锅炉合理运行时可以有效降低NOx和SO2的排放.
개소료아국투운적수태채용재열증기단로조온기술적745t/h순배류화상과로적설계여운행정황,병탐토료과로운행조건대감배NOx화SO2적영향.유성능측시결과가지,과열기、재열기、선풍분리기화공기예열기설계합리;재열증기단로조온기술능구만족재열기조온요구;재궤조대220MW전부하은정운행시,과로열효솔평균시험치화평균수정치분별위90.72%화90.56%;과로완전구비최대련속출력745t/h화최저불투유은연출력련속운행적능력;과로합리운행시가이유효강저NOx화SO2적배방.
An introduction is being presented to the design and operation of the first domestic 745 t/h CFB boiler with bypass temperature controlling system for the reheat steam, while influence of the operating condition on NO. and SO2 emission discussed. Performance test results show that the superheater, rehea- ter, cyclone separator and air preheater are all rationally designed; the parameters of reheat steam could he quickly and accurately adjusted by the bypass temperature controlling system; under operating conditions at a load of 220 MW, the average test value of boiler thermal efficiency and the average corrected efficiency are respectively 90. 72% and 90. 56% ; the boiler could be stably and continuously operated at the maximum output of 745 t/h and at the lowest output without auxiliary fuel; the purposes of low NOx and SO2 emission could be achieved if the boiler is rationally operated.