DOC-Ⅰ降烯烃催化剂小型提升管反应性能评价

采用小型提升管催化裂化试验装置评价研制的DOC-Ⅰ降烯烃催化剂的催化裂化反应性能。结果表明，在反应温度500 ℃、剂油质量比6和停留时间1.99 s条件下，DOC-Ⅰ催化剂上原料油的转化率达75.01%，较参比催化剂提高1.79个百分点，相应的液化气产率降低0.28个百分点，汽油产率增加2.9个百分点，烯烃含量下降5.21个百分点，异构烷烃和芳烃含量明显增加，产品分布有效改善。表明研制的DOC-Ⅰ催化剂具有较好的催化裂化性能和降烯烃能力。

Evaluation of catalitic cracking performance of DOC-Ⅰ catalyst for olefin reduction in a lab scale riser reactor

The fluid catalytic cracking (FCC) performance of DOC-Ⅰ olefin reducing catalyst was evaluated in a lab scale riser reactor. The results showed that under the condition as follows: the ratio of catalyst to oil 6, reaction temperature 500 ℃ and reaction residence time 1.99 s,feed oil conversion over DOC-Ⅰ catalyst reached 75.01%,which was 1.79% higher than that over the reference catalyst.It was found that the content of olefins over DOC-Ⅰ catalyst reduced 5.21%,LPG yield declined 0.28%,gasoline yield increased 2.9%,the amount of isoparaffin and aromatic hydrocarbon increased significantly,and the desirable product distribution over DOC-Ⅰ catalyst was obtained compared with the reference catalyst.It was indicated that DOC-Ⅰ catalyst possessed ideal capability of FCC and olefin reduction.