煤渣催化聚苯乙烯泡沫塑料热解的研究

doi:10.19491/j.issn.1001-9278.2009.04.020

中国塑料 ›› 2009, Vol. 23 ›› Issue (04): 80-82 .DOI: 10.19491/j.issn.1001-9278.2009.04.020

煤渣催化聚苯乙烯泡沫塑料热解的研究

宋学君于雅洁武士威孙挺

沈阳建筑大学

收稿日期:2009-01-04 修回日期:1900-01-01 出版日期:2009-04-26 发布日期:2009-04-26

The Study on Cracking of Wasted Expanded Polystyrene Catalyzed by Cinder

宋学君 SONG Xue-jun

Received:2009-01-04 Revised:1900-01-01 Online:2009-04-26 Published:2009-04-26
Contact: 宋学君 SONG Xue-jun

摘要/Abstract

摘要： 废弃聚苯乙烯泡沫塑料容易引起环境污染，需加以利用。采用热解法回收聚苯乙烯往往存在催化剂中毒和裂解残留物后续处理的问题。为此，本文选择煤渣作为催化剂，对废弃聚苯乙烯热解进行回收，通过气相色谱分析确定热解产物。结果表明：升温速度、热解温度对苯乙烯收率有一定影响，慢速升温、热解温度为380℃时，液体溜分中苯乙烯的含量（63%）最高；与其他催化剂比较，煤渣催化的产物收率更高。常压下，催化剂用量超过8%后，液体产物的收率（89%）不再增加；作为燃煤设备所排出的废渣，煤渣质轻、比表面大，主要化学成分为SiO2、Al2O3、Fe2O3和CaO。煤渣催化属于废物再用，不存在因催化剂中毒而浪费资源的问题；裂解残留物经过简单处理、无需分离就可用作路基通孔渗水材料。

关键词: 煤渣, 催化剂, 聚苯乙烯泡沫塑料, 裂解, 废物再用

Abstract: Causing environmental pollution easily, wasted expanded polystyrene (EPS) should be fully used. Using cracking-method to recycle EPS usually has two problems. One is how to avoid catalyst-poisoning, the other is how to deal with remnants. So cinder was used as catalyst for recycling EPS in this paper. The cracking products of EPS were analyzed by Gas Chromatography. The results showed that: The speed of elevating temperature and the cracking temperature had certain influence on the yield of styrene. Elevating of temperature slowly at 380℃, the content of styrene in liquid products was the highest ( 63%). Compared with other catalysts, the cinder-catalyzed yield of cracking products was higher. Under atmospheric pressure, when the amount of catalyst was over 8%, the yield (89%) of liquid products no longer increased. As waste from coal-fired equipment, cinder has the characteristics of light quality and large ratio surface area. The main chemical components of cinder were SiO2, Al2O3, Fe2O3 and CaO. Using wasted cinder as catalyst had no waste of resources due to catalyst-poisoning. After simple processing, the cracking residues can be reused as roadbed through-hole materials.

Key words: Cinder, Catalyst, Polystyrene foam, Cracking, Waste recycling

中图分类号:

X705

宋学君于雅洁武士威孙挺. 煤渣催化聚苯乙烯泡沫塑料热解的研究[J]. 中国塑料, 2009, 23(04): 80-82 .

宋学君 SONG Xue-jun. The Study on Cracking of Wasted Expanded Polystyrene Catalyzed by Cinder[J]. China Plastics, 2009, 23(04): 80-82 .

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煤渣催化聚苯乙烯泡沫塑料热解的研究

The Study on Cracking of Wasted Expanded Polystyrene Catalyzed by Cinder

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