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.
作者
覃刘平
王黎
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)
出处
《化工环保》
CAS
CSCD
北大核心
2020年第2期203-206,共4页
Environmental Protection of Chemical Industry
关键词
废轮胎
稀土改性
催化热解
产油率
油气总产率
waste tire
rare earth modification
catalytic pyrolysis
oil yield
total oil and gas yield
作者简介
覃刘平(1995-),男,湖北省宜昌市人,硕士生,电话15671601370,电邮very.thank.you@foxmail.com。
