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.
分析了孤岛渣油在分散型磷钼酸铵催化剂存在下加氢裂化反应产物的性质。
The properties of the hydrocracking products of Gudao residue in the presence of dispersed ammonium phosphomolybdate catalyst were studied.
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