HZSM-5 Zeolite As Catalyst Additive for Residue Cracking under FCC Conditions
HZSM-5 Zeolite As Catalyst Additive for Residue Cracking under FCC Conditions
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DOI：
10.1021/ef9002632
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发表时间：
2009-07
期刊：
影响因子：
5.3
通讯作者：
J. M. Arandes;I. Torre;M. Azkoiti;J. Ereña;M. Olazar;J. Bilbao
中科院分区：
文献类型：
--
作者：
J. M. Arandes;I. Torre;M. Azkoiti;J. Ereña;M. Olazar;J. Bilbao
已经对使用混合催化剂（商业催化剂的物理混合物，用于与基于HZSM-5沸石制备的其他人的物理混合物）进行了一项研究），后者是FCC（流化的催化裂纹）单位的标准饲料。在与FCC反应器相似的条件下，在实验室尺度上运行的立管模拟器的处理显示HZSM-5沸石在产品分布中的相关作用，这是由于可归因于碱催化剂的酸基质的衰减。 LPG和C5和C6烯烃（尤其是I-Olefins）中的烯烃
A study has been carried out on the use of hybrid catalysts (physical mixture of a commercial catalyst for residue cracking with others prepared based on HZSM-5 zeolites) in the cracking of a mixture made up of atmospheric distillation residue with vacuum gas oil (VGO), with the latter being the standard feed in FCC (fluidized catalytic cracking) units. The cracking has been carried out in the 525−575 °C range, using catalysts subjected to a severe steaming treatment in a riser simulator operating at laboratory scale under similar conditions to those of a FCC reactor. The results show the relevant role of HZSM-5 zeolite on product distribution. Significant findings are the lower overcracking of LPG and gasoline fractions and the lower coke yield, which are due to the attenuation of the reactions attributable to the acid matrix of the base catalyst. The addition of HZSM-5 zeolite is also efficient for increasing the content of C3 and C4 olefins in the LPG and C5 and C6 olefins (especially i-olefins) in the...