Catalytic co-pyrolysis of biomass and waste plastics as a route to upgraded bio-oil
Catalytic co-pyrolysis of biomass and waste plastics as a route to upgraded bio-oil
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DOI：
10.1016/j.joei.2021.03.022
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发表时间：
2021-04-04
影响因子：
5.7
通讯作者：
Williams, Paul T.
中科院分区：
文献类型：
--
作者：
Dyer, Andrew C.;Nahil, Mohamad A.;Williams, Paul T.
采用由第一阶段生物质和塑料共热解和第二阶段衍生热解气体催化升级（沸石 ZSM-5 催化剂）组成的两阶段反应器系统来研究产物气体和生物油的产率和组成。以高密度聚乙烯、低密度聚乙烯、聚丙烯、聚苯乙烯和聚对苯二甲酸乙二醇酯等生物质废木材和废塑料为原料。通过共热解催化将塑料添加到生物质中，产生了比计算预期更高的 CnHm 气体产率，这表明生物质和塑料之间存在一定的相互作用。与单独的生物质热解相比，废塑料的存在导致产物油中含氧化合物的相对比例下降；例如，使用聚乙烯和聚丙烯的生物质可减少>65%，使用聚苯乙烯的生物质可减少>95%。与单独的生物质相比，共热解提质油的燃料性能得到了改善；例如，聚苯乙烯和生物质的共热解表明 C-5 - C-12 燃料范围内的化合物的相对比例有所提高 (76%)。就生物质与塑料的比例而言，即使少量的塑料（生物质：塑料比例为9:1）产生的含氧生物油化合物的相对比例也较低，例如生物质：聚苯乙烯比例为9:1时，生物油产品中含氧化合物的相对比例降低了>55%。 (C) 2021 能源研究所。由爱思唯尔有限公司出版。保留所有权利。
A two-stage reactor system consisting of co-pyrolysis of biomass and plastic in the 1st stage and catalytic upgrading (zeolite ZSM-5 catalyst) of the derived pyrolysis gases in the 2nd stage was used to investigate the yield and composition of the product gases and bio-oil. Biomass waste wood and waste plastics in the form of high density polyethylene, low density polyethylene, polypropylene, polystyrene and polyethylene terephthalate were used as feedstock. The addition of the plastics to the biomass with co-pyrolysis-catalysis, produced a higher CnHm gas yield compared with what would be expected by calculation, suggesting some interaction of the biomass and plastic. The presence of waste plastic resulted in a decrease in the relative proportion of oxygenated compounds in the product oil compared to pyrolysis of biomass alone; for example a reduction of >65% for biomass with polyethylene and polypropylene and >95% reduction for biomass with polystyrene. The fuel properties of the co-pyrolysis upgraded oil were improved compared to biomass alone; for example, the co-pyrolysis of polystyrene and biomass showed an improved relative proportion of compounds in the C-5 - C-12 fuel range (76%). In terms of the ratio of biomass to plastic, even low quantities of plastic (9:1 biomass:plastic ratio) produced a lower relative proportion of oxygenated bio-oil compounds, for example biomass:polystyrene at a ratio of 9:1 reduced the relative proportion of oxygenated compounds in the product bio-oil by >55%. (C) 2021 Energy Institute. Published by Elsevier Ltd. All rights reserved.