催化学报

催化学报 ›› 2008, Vol. 29 ›› Issue (10): 969-974.

• 研究论文 • 上一篇    下一篇

铁基催化剂成型方式对浆态床费-托合成反应性能的影响

郝庆兰1,2,白亮1,相宏伟1,李永旺1   

  1. 1 中国科学院山西煤炭化学研究所煤转化国家重点实验室, 山西太原030001; 2 天津科技大学材料与化学工程学院, 天津300457
  • 收稿日期:2008-10-25 出版日期:2008-10-25 发布日期:2008-10-25

Effect of Shaping Method of Iron-Based Catalyst on Its Performance for Slurry Fischer-Tropsch Synthesis

HAO Qinglan1,2, BAI Liang1*, XIANG Hongwei1, LI Yongwang1   

  1. 1 State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, The Chinese Academy of Sciences, Taiyuan 030001, Shanxi, China; 2 College of Material Science and Chemical Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
  • Received:2008-10-25 Online:2008-10-25 Published:2008-10-25

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摘要： 采用连续共沉淀方法制备了无定形Fe-Cu-K-SiO2催化剂,利用连续共沉淀与喷雾干燥成型技术相结合的方法制备了不同粒径的微球形Fe-Cu-K-SiO2催化剂. 在接近反应工况的条件下对催化剂进行了浆态床费-托合成(FTS)反应性能评价,并对催化剂进行了物性表征. 表征结果表明,无定形催化剂没有规整的外形和均一的粒径分布,微球形催化剂的表面光滑,球形度好,颗粒分布均匀. 浆态床FTS反应评价结果表明,尽管无定形催化剂的初活性及最高活性较高,但蜡产物与催化剂的在线分离困难; 随着成型时平均粒径的增大,微球形催化剂的活性降低,但失活速率减慢,烃产物选择性向轻组分方向偏移,容易实现蜡产物与催化剂的在线分离.

关键词: 费-托合成, 合成气, 铁基催化剂, 成型方式, 浆态床反应器

Abstract: This investigation focused on the effect of preparation methods for Fe-Cu-K-S iO2 catalyst on the FTS reaction performance. The microspheric catalyst exhibi ted excellent smooth surface, fine sphericity, and uniform particle size. Th e catalyst activity decreased with the increase of its average particle size. Th e separation between the wax product and the catalyst in-line was easy, and t he run stability was improved.

Key words: Fischer-Tropsch synthesis, syngas, iron-based catalyst, shaping method, slurry reactor