Polyfuel - A Catalytic Thermal Cracking of Waste LDPE to Produce Liquid Fuel

Y. Chauhan, S. Bhagat
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Abstract

This work is the diminutive attempt towards the plastic waste recycling conducted at Department of Plastic Engineering, Government Polytechnic, Miraj. The term ‘Polyfuel’ means the liquid fuel produced from waste plastics. We have performed the experiment for conversion of waste LDPE into liquid fuel. As LDPE is the long chain hydrocarbon polymer, it has to be broken into small chains hydrocarbons which have been done by catalytic cracking of the LDPE. Coal fly ash is used as a catalyst for thermal cracking of the LDPE. The 54 % yield of process was observed during experimentation. We modified readymade mild still pressure cooker of 9 litre capacity as a reactor for this experiment. The glass condenser is used for condensing the generated vapours during process. We found 270 ml of fuel from 500 grams of waste LDPE at reaction temperature of 3000C. The source of waste LDPE is the milk pouches treated as the waste after utilisation of the milk. The fuel analysis shows that the specific gravity at 280C is 0.7466, density at 280C is 0.7228 g/cm3, viscosity is 1.38 cP, volatile matter is 100 %, flash point is 4 0C, pour point is <-5 0C, acid value is 0.058, total ash is 0.00 %, moisture content is 0.10 %, carbon residue is 0.15 %, sulphur content is 206 ppm and gross calorific value is 9970 kcal/kg.
多燃料——废LDPE的催化热裂解生产液体燃料
这项工作是在Miraj政府理工学院塑料工程系进行的塑料废物回收的微小尝试。“多燃料”一词是指从废塑料中生产的液体燃料。我们进行了将废LDPE转化为液体燃料的实验。由于LDPE是长链烃聚合物,必须通过催化裂化将其裂解成小链烃。粉煤灰是LDPE热裂解的催化剂。实验中观察到该工艺收率为54%。我们改良了现成的9升容量的轻度静止高压锅作为本实验的反应器。玻璃冷凝器用于冷凝工艺过程中产生的蒸汽。在3000℃的反应温度下,我们从500克废LDPE中发现270毫升燃料。废弃LDPE的来源是牛奶利用后作为废物处理的牛奶袋。燃料分析表明,280C时的比重为0.7466,280C时的密度为0.7228 g/cm3,粘度为1.38 cP,挥发物为100%,闪点为40℃,倾点<- 50℃,酸值为0.058,总灰分为0.00 %,水分含量为0.10%,残碳含量为0.15%,硫含量为206 ppm,总发热量为9970 kcal/kg。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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