【摘要】 直接分离再生是废旧纸塑铝复合包装物常用手段之一，其过程会产生由残余纸浆碎屑、聚乙烯薄膜与铝膜组成的二次固废。采用热解炭化技术研究废旧纸塑铝复合包装各组分及二次固废的热分解特性及成炭规律。结果表明：炭化温度为550～700℃下，铝箔可从废旧复合包装物及其二次固废中分离回收。二次固废显示聚乙烯薄膜为主的热分解特性，随着炭化温度的提高，炭产率下降，无序结构比例增加，纤维结构被破坏，孔结构增多。炭化温度为600℃下，废旧复合包装物炭化产率为23.70%，比二次固废炭产率高，但二次固废的铝产率（35.41%）高于废旧复合包装物的铝产率（12.79%）。更多还原

【Abstract】 Direct separation and regeneration is one of the common methods for waste paper-plastic-aluminum composite packaging.This process generates secondary solid waste consisting of residual pulp debris,polyethylene film,and aluminum film.The pyrolysis carbonization technology was used to study thermal decomposition characteristics and charring law of each component of waste paper-plastic-aluminum composite packaging and secondary solid waste.The results show that when carbonization temperature is 550～700 ℃,aluminum foil can be separated and recovered from waste composite packaging and its secondary solid waste.The secondary solid waste shows thermal decomposition characteristics of polyethylene film.With the increase of carbonization temperature,carbon yield decreases,proportion of disordered structure increases,fiber structure is destroyed,and pore structure increases.When carbonization temperature is 600 ℃,carbonization yield of waste composite packaging is 23.70%,which is higher than that of secondary solid waste carbon,but aluminum yield of secondary solid waste(35.41%) is higher than that of waste composite packaging(12.79%).更多还原