超稳y分子筛的水热稳定性、抗钒性能和焦炭选择性都优于传统的沸石，适合作为渣油FCC催化剂的活性主体。
For FCC resid processing, USY zeolite is perferred because of its superior hydrothermal stability, vanadium resistance and coke selectivity compared to conventional zeolites.
改造后，焦炭水分能够控制在较低水平且稳定性显著提高，焦炭粒级分布明显改善，取得了较好的社会效益和经济效益。
After reformation the moisture in coke is controlled within a lower level and obviously steadier, grain of coke improved, better social and economic profit got.
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