FCC工艺中提升增产丙烯助剂性能研究进展  

Advances in improving the performance of additives for increasing propylene production in FCC process

作　　者：吕鹏刚 刘涛 叶行 黄校亮 段宏昌 谭争国 LYU Penggang;LIU Tao;YE Hang;HUANG Xiaoliang;DUAN Hongchang;TAN Zhengguo(Lanzhou Petrochemical Research Center,Petrochemical Research Institute,PetroChina,Lanzhou 730060,Gansu,China;Golmud Oil Refinery,Qinghai Oilfield,PetroChina,Golmud 816099,Qinghai,China)

机构地区：[1]中国石油石油化工研究院兰州化工研究中心,甘肃兰州730060 [2]中国石油青海油田格尔木炼油厂,青海格尔木816099

出　　处：《化工进展》2022年第1期210-220,共11页Chemical Industry and Engineering Progress

摘　　要：流化催化裂化(FCC)是炼厂最重要的二次加工工艺,也是石油化工应用中丙烯的第二大来源。随着丙烯需求消费的不断增长,在FCC催化剂中添加增产丙烯助剂是一种灵活、高效提高丙烯收率的途径,其助剂主要由活性组分ZSM-5分子筛和基质组成。本文主要从活性组分ZSM-5分子筛和基质两方面分别介绍目前阶段增产丙烯助剂的研究现状,通过对ZSM-5分子筛的改性来提升活性组分的性能,重点综述了调变分子筛的酸度、改善孔结构及粒度和提高水热稳定性;分析了基质孔结构和酸性的梯度分布对助剂在FCC工艺中提高原料的转化、减少生焦和增产丙烯的重要作用。最后指出在合成分子筛过程中引入改性元素,减少元素流失,提高改性元素的利用率,同时在助剂基质方面的研究仍有不足,开发低成本、大孔径和适宜酸度的高性能基质也是增产丙烯助剂未来的研究方向。Fluid catalytic cracking(FCC)is the most important secondary processing process in refineries,and also the second largest source of propylene in petrochemical applications.Adding propylene production-increasing additives,mainly composed of active component ZSM-5 zeolite and matrix,to FCC catalyst is a flexible and efficient method to increase propylene yield.In this paper,the research status of additives for increasing propylene production is introduced from two aspects of active component ZSM-5 zeolite and matrix.The modification of ZSM-5 zeolite is used to improve the performance of active component,which is by adjusting the acidity,improving pore structure and particle size,and improving hydrothermal stability of zeolite.The important effects of structure and acid gradient distribution of matrix in improving feedstock conversion,reducing coke formation and increasing propylene production in FCC process is analyzed.Finally,it is pointed out that introducing modification elements in the synthesis of zeolite can reduce the loss of elements,improve the utilization rate of modified elements.At the same time,there are still some deficiencies in the research of additive matrix.The development of high-performance matrix with low cost,large pore size and suitable acidity is also the future research direction of additives for increasing propylene production.

关 键 词：流化催化裂化(FCC) 助剂 ZSM-5分子筛 基质 增产丙烯 

分 类 号：TE624.9[石油与天然气工程—油气加工工程]