电力与能源
電力與能源
전력여능원
Power and Energy
2014年
4期
488-490,494
,共4页
脱硝系统%脱硫旁路挡板%增压风机%优化控制策略%硬件改进%逻辑优化
脫硝繫統%脫硫徬路擋闆%增壓風機%優化控製策略%硬件改進%邏輯優化
탈초계통%탈류방로당판%증압풍궤%우화공제책략%경건개진%라집우화
Denitration system%Desulfurization bypass damper%Booster fan%Optimal control strategy%Hard-ware improvement%Logic optimization
为了改进和提升脱硫环保设施的运行效率，在增设脱硝系统的同时，拆除了机组脱硫旁路挡板，增设了脱硫增压风机旁路烟道及事故喷淋系统。为了确保脱硫设备的安全、经济、稳定运行，在硬件改造方面，采取二路不间断供电电源、增设工程师站、冗余设置重要输入/输出信号、重要保护信号采取“三取二”策略进行优化设计；在软件修改方面，脱硫系统跳闸后主燃料立刻跳闸、增压风机跳闸后快速减负荷、优化增压风机跳闸条件、增设联锁保护功能、协调各方进行联合调试、更新脱硫画面背景等工作；在机组运行方面，拆除旁路烟道后要注意冷、热态启动事项和低负荷运行节能措施。实践证实了在增设脱硝系统的同时，拆除脱硫旁路挡板是可行、准确的，具有节能减排效果。
為瞭改進和提升脫硫環保設施的運行效率，在增設脫硝繫統的同時，拆除瞭機組脫硫徬路擋闆，增設瞭脫硫增壓風機徬路煙道及事故噴淋繫統。為瞭確保脫硫設備的安全、經濟、穩定運行，在硬件改造方麵，採取二路不間斷供電電源、增設工程師站、冗餘設置重要輸入/輸齣信號、重要保護信號採取“三取二”策略進行優化設計；在軟件脩改方麵，脫硫繫統跳閘後主燃料立刻跳閘、增壓風機跳閘後快速減負荷、優化增壓風機跳閘條件、增設聯鎖保護功能、協調各方進行聯閤調試、更新脫硫畫麵揹景等工作；在機組運行方麵，拆除徬路煙道後要註意冷、熱態啟動事項和低負荷運行節能措施。實踐證實瞭在增設脫硝繫統的同時，拆除脫硫徬路擋闆是可行、準確的，具有節能減排效果。
위료개진화제승탈류배보설시적운행효솔，재증설탈초계통적동시，탁제료궤조탈류방로당판，증설료탈류증압풍궤방로연도급사고분림계통。위료학보탈류설비적안전、경제、은정운행，재경건개조방면，채취이로불간단공전전원、증설공정사참、용여설치중요수입/수출신호、중요보호신호채취“삼취이”책략진행우화설계；재연건수개방면，탈류계통도갑후주연료립각도갑、증압풍궤도갑후쾌속감부하、우화증압풍궤도갑조건、증설련쇄보호공능、협조각방진행연합조시、경신탈류화면배경등공작；재궤조운행방면，탁제방로연도후요주의랭、열태계동사항화저부하운행절능조시。실천증실료재증설탈초계통적동시，탁제탈류방로당판시가행、준학적，구유절능감배효과。
In order to improve and upgrade the efficiency of desulfurization environmental protection facilities, we demolish the desulfurization bypass damper.But we add denitration system,bypass flue for desulfurization booster fan and accident spray system at the same time.We make three improvements in order to ensure the safety,economic and stable operation of the desulfurization equipment.In terms of hardware transformation, use uninterrupted power supply,add engineer station,redundant set important input/output signals,and the important protection signals take “three choose two”strategy;In terms of software changes,make the main fuel tripped immediately after desulfurization system tripped,load reduced rapidly after the blower fan tripped, optimize of blower fan tripping condition,add the interlock protection function,co-ordinate for joint debugging and update the desulfurization screen background,etc.In terms of unit operation,after the demolition of by-pass flue should pay attention to the cold and hot start-up and energy saving measures for low load operation. Practice confirmed that added denitration system and demolished the desulfurization bypass damper at the same time is feasible and accurate.It also has the effect of energy conservation and emissions reduction.
