石油炼制与化工 ›› 2018, Vol. 49 ›› Issue (12): 39-42.

• 基础研究 • 上一篇    下一篇

重油催化裂化催化剂孔体积对其裂化性能的影响

刘璞生1,杜斌2,杜晓辉1   

  1. 1. 中国石油兰州化工研究中心
    2. 中国石油技术开发有限公司
  • 收稿日期:2018-03-22 修回日期:2018-04-23 出版日期:2018-12-12 发布日期:2019-01-03
  • 通讯作者: 刘璞生 E-mail:liupusheng@petrochina.com.cn
  • 基金资助:
     

EFFECT OF PORE VOLUME ON CRACKING PERFORMANCE OF RFCC CATALYST

#br#   

  1.  
  • Received:2018-03-22 Revised:2018-04-23 Online:2018-12-12 Published:2019-01-03
  • Supported by:
     

摘要: 通过调节拟薄水铝石无机酸酸化条件制备了2种孔体积不同的重油催化裂化催化剂;采用X射线衍射、吡啶吸附红外光谱、场发射扫描电子显微镜等手段及裂化反应装置研究了催化剂的物化性质和重油裂化性能。结果表明:催化剂Cat-1、Cat-2的孔体积分别为0.46 cm3/g、0.36 cm3/g,Cat-1的孔体积显著高于Cat-2的孔体积;在反应温度为530 ℃、剂油质量比为5的条件下,与使用Cat-2催化剂相比,使用Cat-1催化剂,重油转化率提高6.86百分点,目标产物液化气及汽油收率大幅上升,副产物干气和焦炭选择性明显下降。

关键词: 催化裂化, 催化剂, 孔体积, 裂化性能

Abstract: X-ray diffraction (XRD), N2 physical adsorption, infrared spectra of pyridine (Py-IR), mercury intrusion porosimetry (MIP), field emission scanning electron microscopy (FE-SEM) and an advanced cracking evaluation (ACE) equipment were used to study the physicochemical properties and cracking performance of the RFCC catalysts with different pore volume. The results showed that the catalyst Cat-1 with pore volume of 0.46cm3/g has a conversion rate 6.86% higher than that of the catalyst Cat-2 with pore volume of 0.36cm3/g. The yields of LPG and C5+ gasoline increase remarkably and the selectivity of by-product (coke and dry gas) declines at reaction conditions of 530℃ and catalyst/oil ratio 5.

Key words: FCC, catalyst, pore volume, cracking performance

中图分类号: