燃气轮机技术
燃氣輪機技術
연기륜궤기술
GAS TURBINE TECHNOLOGY
2013年
4期
47-52
,共6页
高炉煤气%BPT偏差%硫化铁%附着物
高爐煤氣%BPT偏差%硫化鐵%附著物
고로매기%BPT편차%류화철%부착물
BFG%BPT spread%FeS%deposition
某三菱M701 SDA高炉煤气机组在大修后重新启动中发生BPT偏差大跳机事件。在燃气轮机点检后发现部分燃烧室及透平静叶出现附着物堆积和冷却孔堵塞的现象，从而引起BPT偏差大。经过现场检查和附着物的采样化验，判断煤气管道中大量的硫化铁附着物剥落进入燃气轮机燃烧室，生成氧化铁，在冷却空气的冷却下附着在燃烧室及过渡段内壁和静叶上。煤气管道中附着物的生成主要是由于煤气中粉尘量和硫含量严重超标所致。为了减少附着物的生成，提出了包括管道清洁和参数监视等若干改善对策和建议。
某三蔆M701 SDA高爐煤氣機組在大脩後重新啟動中髮生BPT偏差大跳機事件。在燃氣輪機點檢後髮現部分燃燒室及透平靜葉齣現附著物堆積和冷卻孔堵塞的現象，從而引起BPT偏差大。經過現場檢查和附著物的採樣化驗，判斷煤氣管道中大量的硫化鐵附著物剝落進入燃氣輪機燃燒室，生成氧化鐵，在冷卻空氣的冷卻下附著在燃燒室及過渡段內壁和靜葉上。煤氣管道中附著物的生成主要是由于煤氣中粉塵量和硫含量嚴重超標所緻。為瞭減少附著物的生成，提齣瞭包括管道清潔和參數鑑視等若榦改善對策和建議。
모삼릉M701 SDA고로매기궤조재대수후중신계동중발생BPT편차대도궤사건。재연기륜궤점검후발현부분연소실급투평정협출현부착물퇴적화냉각공도새적현상，종이인기BPT편차대。경과현장검사화부착물적채양화험，판단매기관도중대량적류화철부착물박락진입연기륜궤연소실，생성양화철，재냉각공기적냉각하부착재연소실급과도단내벽화정협상。매기관도중부착물적생성주요시유우매기중분진량화류함량엄중초표소치。위료감소부착물적생성，제출료포괄관도청길화삼수감시등약간개선대책화건의。
BPT spread high trip occurred in a MHI M701SDA BFG gas turbine in the time of restart after its major inspection .Deposi-tions were found in the inner wall of some combustors , transition pieces and the surface of turbine vanes .Also, the cooling air holes of the hot parts were clogged by the deposition which caused the BPT spread high .After the site inspection and sampling of deposition , we found many FeS depositions fell away the fuel gas piping flew into the combustor and generated the Fe 2 O3 due to the high temperature . The Fe2 O3 depositions cooled by cooling air and attached to the surface of hot parts .The extreme ovenproof dust and S concentration of fuel gas are the major cause of deposition in the fuel gas piping .In order to reduce the generation of deposition , some countermeasure including fuel gas purification and parameter monitoring are recommended .
