Zn改性对Ni/ZSM-22催化剂费托重柴油异构降凝性能的影响

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白宜灵^1,3，范立闯³，李涛²，陈会民²，张怀科³，杨勇^2,3，张光晋^1*

1. 中国科学院过程工程研究所，北京100190 2. 中国科学院山西煤炭化学研究所，山西太原 030001 3. 中科合成油技术有限公司，北京 101407

收稿日期:2019-03-25修回日期:2019-04-24出版日期:2020-01-22发布日期:2020-01-14
通讯作者:张光晋

Effect of Zn modification on hydroisomerization performance of the Fischer?Tropsch heavy diesel over Ni/ZSM-22 catalyst

Yiling BAI^1,3, Lichuang FAN³, Tao LI², Huimin CHEN², Huaike ZHANG³, Yong YANG^2,3, Guangjin ZHANG^1*

1. Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China2. Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, China3. Synfuels China Technology Co., Ltd., Beijing 101407, China

Received:2019-03-25Revised:2019-04-24Online:2020-01-22Published:2020-01-14
Contact:ZHANG Guang-jin

摘要/Abstract

摘要： 采用离子交换、成型、负载方法对ZSM-22分子筛进行改性，得到不同Zn负载量的ZSM-22分子筛载体，通过X射线衍射、N2物理吸附?脱附及吡啶吸附红外等表征其物化性质。以改性ZSM-22分子筛为酸性组分、Ni为金属组分制备Ni基加氢异构催化剂，以费托重柴油为原料对其异构降凝性能进行评价。结果表明，离子交换对分子筛结构影响较小，且Zn在分子筛表面呈高度分散状。分子筛负载Zn可降低Br?nsted (B)酸与Lewis (L)酸的酸量比值(B/L)，且随Zn负载量增加，B/L值降低，异构烃收率提高，有效抑制裂解反应，提高柴油收率。负载Zn可明显降低重型柴油冷滤点，随Zn负载量逐渐提高，冷滤点上升。在金属加氢性能相同时，减少B酸含量有利于提升催化剂上金属位与酸性位的匹配及重型柴油异构性能。以所制Zn负载量为0.42wt%的Ni基分子筛催化剂在柴油的冷滤点达到国六车用柴油标准-10#柴油要求(冷滤点?5℃)时，柴油收率仍高达90.65%。

引用本文

白宜灵范立闯李涛陈会民张怀科杨勇张光晋. Zn改性对Ni/ZSM-22催化剂费托重柴油异构降凝性能的影响[J]. 过程工程学报, 2020, 20(1): 116-122.
Yiling BAI Lichuang FAN Tao LI Huimin CHEN Huaike ZHANG Yong YANG Guangjin ZHANG . Effect of Zn modification on hydroisomerization performance of the Fischer?Tropsch heavy diesel over Ni/ZSM-22 catalyst[J]. Chin. J. Process Eng., 2020, 20(1): 116-122.

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