反应条件对低密度聚乙烯和聚丙烯混合塑料热解影响和评价  

Effect and Evaluation of Reaction Conditions on Pyrolysis of Mixed Plastics of Low Density Polyethylene and Polypropylene

作　　者：杜新胜 高艳[2] 王福善 张飞祥[3] 张喜 张亚飞 徐海燕 杜闰萍 DU Xinsheng;GAO Yan;WANG Fushan;ZHANG Feixiang;ZHANG Xi;ZHANG Yafei;XU Haiyan;DU Runping(PetroChina Lanzhou Petrochemical Company Research Institute,Lanzhou Gansu 730030,China;PetroChina Lanzhou Petrochemical Company Science and Technology Innovation Center,Lanzhou Gansu 730030,China;Beijing Aerospace Propulsion Institute,Beijing 100176,China)

机构地区：[1]中国石油兰州石化公司研究院,甘肃兰州730030 [2]中国石油兰州石化公司科创中心,甘肃兰州730030 [3]北京航天动力研究所,北京100176

出　　处：《当代化工》2024年第11期2607-2615,共9页Contemporary Chemical Industry

摘　　要：以常见的废塑料低密度聚乙烯和聚丙烯混合物为原料,采用实验室自主搭建的热解反应系统,研究了400、500、600℃反应温度和15、30、45 min反应时间对热解反应的影响。结果表明:在热解温度为500℃、反应时间为30 min的条件下,液相产物产率实现最大化,达到80.5%(质量分数)。分别采用气相色谱仪和气相色谱-质谱联用仪进一步对不同反应条件下气相组分和液相组分进行了分析,明确了产物组分分布情况,为后续产品的深加工提质和产物的二次利用提供良好的实验基础和数据支撑。Using the mixture of low density polyethylene and polypropylene as raw materials,the effects of reaction temperature of 400℃,500℃and 600℃and reaction time of 15 min,30 min and 45 min on pyrolysis reaction were studied by using a pyrolysis reaction system built in the laboratory.The results showed that under the conditions of pyrolysis temperature of 500℃and reaction time of 30 min,the yield of liquid product was maximized,reaching 80.5%(mass fraction).Gas chromatography and gas chromatography-mass spectrometry were used to further analyze the gas and liquid components under different reaction conditions,and the distribution of product components was clarified,providing good experimental basis and data support for the further processing and upgrading of products and the secondary utilization of products.

关 键 词：低密度聚乙烯 聚丙烯 热解反应 深加工提质 聚合物 碳氢化合物 废物处理 

分 类 号：TQ320.9[化学工程—合成树脂塑料工业]