ash n. 1.〔常 pl.〕 灰。 2.〔pl.〕灰烬;废墟。 3.〔pl.〕骨灰,遗骨;〔诗〕遗骸。 4.灰色,苍白。 5.碳酸钠 (= sodium carbonate)。 soda ash 纯咸。 the ashes of an ancient empire 古帝国的废墟。 be reduced [burnt] to ashes 烧成灰烬,化为乌有。 bring back the ashes 〔英板球〕雪耻,转败为胜。 in dust and ashes【宗教】悲切忏悔。 lay...in ashes 使化为灰烬,烧光。 turn to dust and ashes 消失,(希望等)幻灭,化为尘埃。 n. 1.【植物;植物学】?,?皮。 2.?木。 a Chinese ash ?,白蜡树。 a red ash 洋白蜡树。 adj. = ashen.
This paper analyzes the impact of the variation of coal proportion on flying - ash erosion in heating surface at the rear of coal - fired boiler 研究了配煤比例变化对燃煤锅炉尾部受热面飞灰磨损的影响。
This paper analyzes the impact of the variation of coal proportion on flying - ash erosion in heating surface at the rear of coal - fired boiler 摘要研究了配煤比例变化对燃煤锅炉尾部受热面飞灰磨损的影响。
It tell us : the abrasive capability of fly ash ; the similar calculation of ash erosion ; the calculation of ash erosion in the tube in turn and tube out of turn ; the reason of tube abrasion for gas flue ; the influence of air parameter for fly ash erosion ; the influence of changing temperature ; the influence of the flue gas composition , etc . next , it advances the solving measure ; reduce the flue gas velocity ; reduce the concentration of fly ash ; responsible construction : replace smooth tube with spiral tube ; use the new material of abrasion ; fuel desulfurization ; reduce so3 of flue gas ; raise flue gas temperature , making it up the dew point ; use the abrasion - resistance material to resist abrasion 讨论了飞灰磨损性能、管壁受飞灰冲蚀的近似计算、灰粒对顺列管和错列管的磨损计算、烟气走廊引起对流管束的磨损机理、空气动力参数对飞灰冲蚀的影响以及受热面壁温变化及烟气成份对飞灰磨损的影响等问题。接着提出了解决的措施:降低平均烟气流速;降低飞灰浓度;使用鳍片管、螺旋翅片管代替光管;选择合适的结构及排列方式,减少烟气中so3的含量;提高受热面壁温使之大于烟气的露点温度;采用抗腐蚀材料作受热面等防腐蚀的措施。