作　　者： ; ; ; ;

机构地区： 广东石油化工学院

出　　处： 《现代化工》 2012年第10期50-53,共4页

摘　　要： 建立了利用超临界CO2从阻燃高抗冲聚苯乙烯塑料溶液中萃取分离多溴联苯醚的新工艺,研究了超临界CO2的温度、压力、体积及十溴联苯醚浓度等因素对超临界萃取分离过程的影响规律,提出了从阻燃塑料中分离十溴联苯醚的措施。实验结果表明,采用离心分离除去塑料溶液中大部分十溴联苯醚颗粒后,再在65℃、20 MPa超临界条件下,使用2倍于塑料溶液体积的超临界CO2进行萃取,所得的再生塑料的多溴联苯醚总含量低于0.1%(干基),多溴联苯醚的脱除率超过97%。 A new recycling process with supercritical CO2 extraction of PBDEs from waste HIPS plastic is developed in this study. The influences of the temperature, pressure and volume of supercritical CO2 and decabromodiphenyl ether concentraction on the extraction process are investigated. The measures for reducing the amount of deeabromodiphenyl ether in the recycled HIPS are proposed. The experimental results show that, after the most of decabromodiphenyl ether particles is separated by centrifuge at speed of 10 000 r/min and at 30℃,the recycled HIPS with lower than 0. 1% （dry） of the total amount of decabromodiphenyl ether can be obtained by further removing decabromodiphenyl ether under the following conditions ：65℃ of temperature ,20 MPa of the pressure and 2：1 volume ratio of supereritieal CO2 to HIPS solution. The removal rate of PBDEs is over 97%.

关 键 词： 超临界二氧化碳 高抗冲聚苯乙烯 十溴联苯醚

领　　域： [环境科学与工程]