Matrix effects in catalytic cracking
Matrix effects in catalytic cracking
复制标题
DOI：
--
复制
发表时间：
1986
期刊：
影响因子：
--
通讯作者：
L. Silverman;S. Winkler;J. A. Tiethof;A. Witoshkin
中科院分区：
文献类型：
--
作者：
L. Silverman;S. Winkler;J. A. Tiethof;A. Witoshkin
FCC催化剂基质在决定催化性能以及影响FCC单元中的传热和赋予催化剂重要的物理性质方面起着重要作用。本文重点研究了基质对催化剂性能的影响。因为大的进料分子不能容易地扩散到沸石孔中，所以催化剂基质上的初级裂化反应对将底部产物升级为轻循环油做出主要贡献。实验室和商业数据中，改善的底部升级与增加的基质表面积的强相关性说明了这一点。汽油辛烷值和中间馏出物十六烷值也通过活性基质显著增加，这是由于基质裂化的低氢转移和饱和物从底部裂化成轻循环油。基质对饲料污染物的捕集也有重要作用。结果进行了讨论，这表明基体对污染金属和含碱性氮的裂化进料的影响。
The FCC catalyst matrix plays a significant role in determining catalytic performance as well as affecting heat transfer in the FCC unit and imparting important physical properties to the catalyst. This paper focuses on the effects of the matrix on catalytic performance. Because large feed molecules cannot readily diffuse into zeolite pores, primary cracking reactions on the catalyst matrix make a major contribution to upgrading bottoms to light cycle oil. This is illustrated by the strong correlation of improved bottoms upgrading with increasing matrix surface area in both laboratory and commercial data. Gasoline octane and middle distillate cetane are also significantly increased by an active matrix, due to low hydrogen transfer of matrix cracking and to the cracking of saturates into light cycle oil from bottoms. The matrix also play an important role of trapping feed contaminants. Results are discussed which show the effect that matrix has on contaminant metals and on cracking feeds containing basic nitrogen.