稀土改性NaY型分子筛催化热解废轮胎  

NaY Zeolite catelyst modified by rare earth for catalytic pyrolysis of waste tires

作　　者：覃刘平 王黎[1] 鲁逸飞 李钰琦 邓飞虎 QIN Liuping;WANG Li;LU Yifei;LI Yuqi;DENG Feihu(Research Center for Environmental Pollution and Repair with Green Technology,College of Resources and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]武汉科技大学资源与环境工程学院环境污染绿色控制与修复技术研究中心,湖北武汉430081

出　　处：《化工环保》2020年第2期203-206,共4页Environmental Protection of Chemical Industry

摘　　要：采用稀土氧化物改性NaY型分子筛(Ⅰ型催化剂),100 gⅠ型催化剂中添加0.5 g CeO2得到Ⅱ型催化剂,100 gⅠ型催化剂中添加0.5 g La2O3和0.5 g CeO2得到Ⅲ型催化剂。分别采用Ⅰ型、Ⅱ型和Ⅲ型催化剂催化热解废轮胎(粒径0.2 mm),Ⅱ型和Ⅲ型催化剂的产油起始温度和终止温度均低于Ⅰ型催化剂。在催化剂加入量为2.5 g、废轮胎加入量为100 g的条件下,Ⅲ型催化剂催化热解反应的产油率和油气总产率均高于Ⅰ型和Ⅱ型催化剂。Ⅱ型和Ⅲ型催化剂催化热解主要产生轻组分气体,Ⅱ型催化剂C4选择性最高,Ⅲ型催化剂C3选择性最高。NaY type molecular sieve(type-Ⅰcatalyst)was modified by rare earth oxide.Within 100 g type-Ⅰcatalyst,0.5 g CeO2 was added to prepare the type-Ⅱcatalyst,and 0.5 g La2O3 and 0.5 g CeO2 was added to prepare the type-Ⅲcatalyst.The pyrolysis of waste tires(with particle size of 0.2 mm)were catalyzed by type-Ⅰ,type-Ⅱand type-Ⅲcatalyst,respectively.The initial temperature and termination temperature of oil production on type-Ⅱand type-Ⅲcatalyst are lower than that on typee-Ⅰcatalyst.Under the conditions of catalyst amount 2.5 g and waste tire amount 100 g,the oil yield and total oil and gas yield of the catalytic reaction on type-Ⅲcatalyst are higher than those ontype-Ⅰand type-Ⅱcatalyst.The main products of catalytic pyrolysis on type-Ⅱand type-Ⅲcatalyst are light component gases.The reaction selectivity of type-Ⅱcatalyst is the highest to C4 compounds and that of type-Ⅲcatalystis the highest to C3.

关 键 词：废轮胎 稀土改性 催化热解 产油率 油气总产率 

分 类 号：X705[环境科学与工程—环境工程] TQ203.8[化学工程—有机化工]