炼油技术与工程 ›› 2023, Vol. 53 ›› Issue (9): 46-50.

• 催化剂和助剂 • 上一篇    下一篇

磷元素改善催化裂化催化剂磨损指数研究

段宏昌, 王天昀, 赵鸣芝, 彭国峰, 向刚伟, 李鑫   

  1. 1.中国石油石油化工研究院兰州化工研究中心; 2.中国石油化工股份有限公司石家庄炼化分公司; 3.中国石油四川石化有限责任公司
  • 收稿日期:2023-06-09 出版日期:2023-09-15 发布日期:2023-09-27
  • 作者简介:段宏昌，高级工程师，硕士，主要从事催化裂化催化剂、分子筛等新材料和新工艺的研究。E-mail:duanhongchang@petrochina.com.cn。;
  • 基金资助:
    中国石油重大现场工业试验项目（2021ZS12）;

Study on phosphorus improving the attrition strength of FCC catalyst

Duan Hongchang, Wang Tianyun, Zhao Mingzhi, Peng Guofeng, Xiang Gangwei, Li Xin   

  1. 1.PetroChina Lanzhou Petrochemical Research Center; 2.SINOPEC Shijiazhuang Refining & Chemical Company; 3.PetroChina Sichuan Petrochemical Co., Ltd.
  • Received:2023-06-09 Online:2023-09-15 Published:2023-09-27

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摘要：

利用X射线粉末衍射仪(XRD)、傅里叶红外光谱仪(FT-IR)对磷元素改善催化剂抗磨损性能的机理进行了探究。结果表明：磷元素主要通过与催化剂中高岭土的Al—O键发生相互作用，形成P—O—Al稳定结构，有效提高了催化剂的抗磨损性能；以(NH4)3PO4为改性剂，随着磷元素用量的增加，采取等体积浸渍法对流化催化裂化催化剂进行改性处理，提高了催化剂的抗磨损性能，磨损指数由4.2%降至1.0%,达到了应用指标要求。催化剂性能评价结果表明：磷改性催化剂焦炭收率降低0.72百分点，汽油收率增加0.91百分点。

关键词: 磷元素, 催化裂化, 催化剂, 磨损指数, 机理, 高岭土, 性能评价

Abstract:

The mechanism of phosphorus improving the attrition strength of the catalyst is studied by XRD and FT-IR. The results show that the P—O—Al stable structure is formed by the interaction of phosphorus with the Al—O bond of Kaolin in the catalyst, effectively improving the attrition strength of the catalyst. The fluid catalytic cracking catalyst is modified with(NH4)3PO4 as modifier by the method of equal volume impregnation to improve the attrition strength of the catalyst which drops from 4.2% to 1.0% and meets the application requirement. The performance evaluation results of ACE catalyst show that coke of phosphorus modified catalyst decreases by 0.72 percentage points and gasoline yield increases by 0.91 percentage points.

Key words: phosphorus element, FCC, catalyst, wear index, mechanism, kaolin, performance evaluation