加氢裂化反应流出物空冷器（简称REAC）管束属于特种设备，承受高压临氢多相流的冲蚀，易引发恶性事故。
The hydrocracking REAC pipes are special equipments, and easy to lead to serious accidents, for they suffer from the erosion of multiphase flow under the environment of high-pressure hydrogen.
加氢裂化装置空气预热器翅片管经常发生腐蚀，同时产生了大量的腐蚀产物堵塞空气预热器，造成预热器流通不好。
The corrosion often happens to the tubes of air pre-heaters in hydrocracking plants and blocks air pre-heaters so much, that the circulative effect is not well.
热壁加氢反应器是炼油工业加氢裂化装置中的关键核心设备，制造工艺复杂，技术难度大。
The hot wall hydrogen reactor which has complicated manufacture process and needs high technology is a key equipment of hydrocracking apparatus in refinery.
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