长岭炼油厂新型催化裂化装置再生系统旋风分离器尺寸小，不能采用常规氧化铝内衬保护。
Cyclone of a regenerating system in a catalytic cracking unit in the Changling Oil Refining Plantcan not be protected by using conventional linner of alumina because of its small size.
内衬运转周期已由1999年的204天提高到现在的300天，氧化铝回转窑运转率也由1999年的89%提高到现在的94%。
Till now the life cycle of kiln lining prolong from 204 days in 1999 to 300 days. And the operation rate of kiln rises from 89% in 1999 to 94%.
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