Plastics and paper are common components of municipal solid waste (MSW), making an in-depth understanding of their interactions essential for MSW thermal conversion. In this study, the co-pyrolysis behavior of plastic and paper was investigated. Firstly, the thermal decomposition characteristics were analyzed. Secondly, the pyrolytic behavior was elucidated in a fixed-bed reactor. Thirdly, the impact of plastic melting on co-pyrolysis was clarified. Results indicated that the thermal decomposition was accelerated between 250 °C and 283 °C, while temperatures above 400 °C resulted in inhibition. During fixed-bed pyrolysis, char yields (70.7–16.9 %) were increased by 4.0 %–12.7 %. This increase was mainly due to plastic melting, which contributed 8.6 % and increased aliphatic carbon content. Besides, PVC and PET exhibited a broader melting range > 500 °C. Bio-oil yields (25.5–70.6 %) were reduced by 3.4 %–12.4 %, primarily affecting aliphatic compositions. Gas yields (3.8–6.5 %) were reduced < 400 °C but increased with temperature, involving primarily H2, CH4, C2H4, and C2H6.

中文翻译：

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阐明城市固体废物中塑料和纸张共热解过程中的协同效应：热行为和产品特性


塑料和纸张是城市固体废物 （MSW） 的常见成分，因此深入了解它们的相互作用对于 MSW 热转换至关重要。在这项研究中，研究了塑料和纸的共热解行为。首先，分析了热分解特性;其次，阐明了固定床反应器中的热解行为。再次，阐明了塑料熔融对共热解的影响。结果表明，在 250 °C 和 283 °C 之间热分解加速，而高于 400 °C 的温度导致抑制。在固定床热解过程中，炭化物产量 （70.7–16.9 %） 提高了 4.0 %–12.7 %。这一增长主要是由于塑料熔化，贡献了 8.6% 和脂肪族碳含量增加。此外，PVC 和 PET 的熔融范围 > 500 °C。 生物油产量 （25.5–70.6 %） 降低了 3.4 %–12.4 %，主要影响脂肪族成分。气体产率 （3.8–6.5%） 在 400 °C 时降低 < 但随温度升高而增加，主要涉及 H2、CH4、C2H4 和 C2H6。