以废可乐瓶为原料提取乙二醇制备煤尘抑制剂  

Recycling of coke bottle waste into glycol for coal dust inhibitor

作　　者：曹丽琼[1,2] 程芳琴[1] 武海波[2] 杨凤玲[1,2] 

机构地区：[1]山西大学资源与环境工程研究所,山西太原030006 [2]山西大学环境与资源学院,山西太原030006

出　　处：《山西化工》2010年第6期1-4,共4页Shanxi Chemical Industry

基　　金：国家科技支撑计划项目(2007BAB24B01)

摘　　要：以废可乐瓶为原料,通过乙二醇脆化、破碎、NaOH水解等步骤提取乙二醇溶液,并对其作为抑尘剂的性能进行了相关实验研究。研究结果表明,NaOH溶液质量分数为5%、固液质量比为1∶8～1∶14、反应时间为60 min时,聚对苯二甲酸乙二醇酯(PET)的降解率达到了90%以上。乙二醇溶液具有良好的润湿性和抗冻性,抑尘性能测试证明,其可作为煤尘抑制剂的原料。Coke bottles have become an environmental hazard for being difficult to degrade and becoming more and more.Its main component is polyethylene terephthalate（abbreviated PET）.Terephthalic acid and glycol are the decomposition products of PET.Terephthalic acid is one kind of organic materials and used in many areas.Glycol is hydrophilic,easy to burn,frost resistant and so on.In this study,coke bottles as raw material were crisped using glycol steam,broken,hydrolysised with NaOH to extract glycol.Also,the performance of glycol as dust inhibitor was tested.The results showed that： NaOH concentration,solid liquid ratio and the reaction time were 1∶8～1∶14,5% and 60 minutes respectively;the degradation capacity of PET was 90%.Terephthalic acid could be recycled.Through to the test,the performance of glycol solution with good wetting and frost resistance proved it can be used as raw material of dust inhibitor.It can be obtained solid terephthalic acid and glycol solution by filtering decomposition of liquid with hydrochloric acid.

关 键 词：废可乐瓶 聚对苯二甲酸乙二醇酯 水解 乙二醇 对苯二甲酸 煤尘抑制剂 

分 类 号：X705[环境科学与工程—环境工程]