粉煤灰共混废弃聚苯乙烯塑料裂解的研究  

The Study on Cracking of Wasted Expaned Polysterene Blended by Fly Ash

作　　者：宋学君[1] 曹晓慧[1] 潘文浩[1] 

机构地区：[1]沈阳建筑大学材料科学与工程学院,辽宁沈阳110168

出　　处：《山东化工》2015年第19期144-145,147,共3页Shandong Chemical Industry

基　　金：沈阳建筑大学学科发展支持项目

摘　　要：粉煤灰属于从燃煤烟气里回收的粉末,若未进行治理,则将在空气中产生污染,危害人们的健康和作物生长。将粉煤灰和废弃塑料共混后加热裂解,回收裂解产物,以气相色谱法检验裂解物。加热制度、裂解温度对裂解产物的回收率有较大影响,裂解温度为365℃时,液体成分中单体的含量最高为65.7%,催化裂解实验表明,粉煤灰用量超过总量的12%后,液体产物的收率在90.0%左右,再增加粉煤灰用量时液体产物收率的增量不明显。粉煤灰属于多孔材料,具有很大的比表面,与固体碱添加物相比,催化性能好,热解生成的苯乙烯产量更大,粉煤灰共混废弃聚苯乙烯塑料裂解法利用了资源,减少了污染。Fly ash as fine powder collected from the flue gas of coal-fired,if not treated,will pollute the air and endanger people＇s health and crop growth. So fly ash was used as catalyst for recycling EPS in this paper. The cracking products recycled from wasted expanded polystyrene（ EPS） were analyzed by Gas Chromatography. The speed of heating and the cracking temperature had great influence on the yield of styrene. When elevating of temperature was 365℃,the content of styrene in liquid products was the highest（ 65. 7%）. Catalytic cracking experiments showed that the amount of fly ash was more than 12% of the total yield of liquid products of around 90. 0% Compared with solid base Additives,fly ash as porous materials with large specific surface had good properties of catalytic. The catalyzed yield in cracking products was higher.Using fly ash as catalyst to crack EPS belonged to reusing waste and reducing pollution.

关 键 词：裂解 共混 聚苯乙烯塑料粉煤灰 

分 类 号：X705[环境科学与工程—环境工程]