废聚苯乙烯泡沫塑料的催化裂解.pdf

化工环保
1.50
ENVRONMENTAL PROTECTION OF CHEMICAL INDUSTRY
2014年第34卷第2期
废聚苯乙烯泡沫塑料的催化裂解
龚新怀,陈婷婷',康晓燕2
(1.武夷学院生态与资源程学院,福建武夷山354300
2.福建省高校绿色化工技术重点实验室,福建武夷山354300)
摘要」为了对废聚翠乙烯泡沫塑料(WPS)资源化利用,通过对WPS进行催化裂解的方法,研究了催化剂种类和裂解温度对
裂解时间、裂解油产率、苯乙烯回收率以及裂解油纯度的影响。研究结果表明,催化剂种类和裂解渦度对裂解反应有着重要
影啊。裂解温度升高,袈解油产率提高,裂解时间绵短,但萃乙烯选择性下降;低于380℃c时,氧化钙的裂解油产悴和裂解时
间优于氧化铝和氯化铝,但苯乙烯的选择性劣于氧化铝和氯化铝;高于400℃时,氯化铝、氧化铝利氧化钙的催化活性接近
在实验条件下,WPS催化裂解的最佳催化剂为氯化铝,380℃下的裂解时间为25min,裂解油产率为85.48%,裂解油中苯乙烯
含量为80.66%(v),且副产物较少
关键词]废聚苯乙烯泡沫塑料;催化裂解:裂解油;苯乙烯
中图分类号1TQ116.2[文献标志码」A[文章编号』1006-1878(2014)02-0150-05
Catalytic Cracking of Waste Expanded Polystyrene
Gong Xinhuail2, Chen Tingting, Kang Xiaoyan
(1. College of Ecology and Resources Engineering. Wuyi University, Wuyishan Fujian 354300, China;
2. Key Laboratory of Green Chemical Technology of Fujian Higher Education. Wuyishan Fujian 354300, China
Abstract: Waste expanded polystyrene(WPS )was treated by catalytic cracking. The effects of catalyst and
cracking temperature on cracking time, cracked oil yield, styrene recovery rate and cracked oil purity were
studied. The results show that both catalyst and cracking temperature have significant effects on the cracking
reaction. With the increase of cracking temperature, the oil yield is increased and the cracking time is
shortened, but the styrene selectivity is decreased; When the cracking temperature is below 380, the oil
yield and the cracking time are better using Cao as catalyst than A1 O, and Alcl, but the styrene selectivity
is worse using Cao as catalyst than Al O and Alcl; When the cracking temperature is over 400 C, the
catalytic activities of the three catalysts are similar. Under laboratory conditions, the optimum catalyst for
catalytic cracking of WPS is Alcl; and with below 380 C of cracking temperature, the cracking time is 25
min, the oil yield is 85.48%, the content of styrene in the cracked oil is 80.66(w), and the by-products
are little
Key words: waste expanded polystyrene; catalytic cracking; cracked oil; styrene
聚苯乙烯泡沫塑料(EPS)因隔热、隔音、防点之一。
潮、防震、质轻价廉等优良特性,广泛应用于家
对废聚苯乙烯泡沫塑料(WPS)进行资源回收
电、仪表、电子、食品等工业。但EPS制品大部利用,是有效缓解当前资源短缺和抑制“白色污
分在一次使用之后作为废弃物直接丢弃,且密度
小、体积大、运输困难、不易自然降解和生物降
收稿日期]2013-09-21;[修订日期12013-12-28
解,因此累积了大量的废弃塑料。EPS制品的大量
作者简介」龚新怀(1985-),男,江西省上饶市人.博七生
使用和废帘物累积,已经构成了“白色污染”的
讲师,主要从事废弃资源开发利用、复合材料制备等研究作
电语15280504996,电邮
重要组成部分,引起了人们的关注。国家已将
基金项目]武夷学院校科研项日(XL1209);福建省科技厅重
废弃塑料列为21世纪在环保领域要控制的三大重点项日(2012X000