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首页> 外文期刊>Journal of Polymers and the Environment >Conversion of Mixed Low-Density Polyethylene Wastes into Liquid Fuel by Novel CaO/SiO2 Catalyst
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Conversion of Mixed Low-Density Polyethylene Wastes into Liquid Fuel by Novel CaO/SiO2 Catalyst

机译：新型CaO / SiO2催化剂将低密度混合聚乙烯废料转化为液体燃料

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摘要

Plastic wastes disposal can be done by various methods such as landfill, incineration, mechanical and chemical recycling but these are restricted due to some environmental, economic and political problems. Conversion of these plastic wastes into valuable products by degradation is the best option. In the present work waste low density polyethylene was degraded by catalytic process using CaO/SiO2 as mixed catalyst. The conditions for catalytic degradation were optimized for the production of maximum liquid fuel. It was found that the yield of liquid product was up to 69.10 wt% at optimum condition of temperature (350 A degrees C), time (90 min) and catalyst feed ratio (1:0.4). Liquid fuels obtained from the catalytic degradation were further separated into various fractions by fractional distillation. Composition of liquid fuels was analyzed by FTIR spectroscopy, which showed that the liquid fuels mostly consist of paraffinic and naphthenic hydrocarbons. Different fuel properties such as density, specific gravity, American petroleum institute gravity (API gravity), viscosity, kinematic viscosity, refractive index, refractive intercept and flash point of both the parents and various fractional fuels were determined. All the properties of the obtained fuels are in close agreement with the fuel properties of gasoline, kerosene and diesel. It was found that our catalyst is very much efficient in terms of time, degradation temperature and amount of catalyst.
机译：可以通过多种方法来处理塑料废物，例如垃圾掩埋，焚化，机械和化学回收，但是由于一些环境，经济和政治问题，这些方法受到限制。通过降解将这些塑料废物转化为有价值的产品是最好的选择。在本工作中，通过使用CaO / SiO2作为混合催化剂的催化工艺降解了低密度聚乙烯废料。优化了催化降解条件，以生产最大量的液体燃料。发现在最佳温度（350℃），时间（90分钟）和催化剂进料比（1∶0.4）的最佳条件下，液体产物的产率高达69.10wt％。由催化降解获得的液体燃料通过分馏进一步分离成各种馏分。 FTIR光谱分析了液体燃料的成分，结果表明液体燃料主要由链烷烃和环烷烃组成。确定了母体和各种分馏燃料的密度，比重，美国石油学会重力（API重力），粘度，运动粘度，折射率，折射截距和闪点的不同燃料特性。所得燃料的所有特性与汽油，煤油和柴油的燃料特性紧密一致。发现我们的催化剂在时间，降解温度和催化剂量方面非常有效。

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