Corrugated cardboard (CCB) comprises a substantial portion of municipal solid waste, of which ~5% is wax coated CCB (WCCB) to enhance its performance. WCCB cannot be recycled, making it a suitable resource to recover wax and produce char. The WCCB was characterized for its extractable wax, lignin, and carbohydrate contents and by thermogravimetric analysis to study its thermal degradation behavior. WCCB was preliminarily examined by pyrolysis‐gas chromatography–mass spectrometry to determine product composition. WCCB samples were then pyrolyzed in auger and tube reactors at 450, 500, and 550°C, and their pyrolysis wax‐oil and char products characterized. WCCB and char were subjected to proximate, ultimate, surface area, analyses. The highest char yield was 36% at 450°C, and the highest wax‐oil yield was 53% at 550°C in the tube reactor. The wax‐oil fraction contained mainly alkanes, alkenes, and dienes (C₉–C₃₆), and chain length decreased with pyrolysis temperature. This wax fraction could be recovered and used as bunker fuel (C₁₂–C₄₀) or further converted to diesel (C₁₀–C₂₀).

中文翻译：

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通过热解回收废蜡瓦楞纸板以回收蜡

瓦楞纸板（CCB）包含很大一部分城市固体废物，其中约5％是涂蜡的CCB（WCCB）以增强其性能。WCCB无法回收，使其成为回收蜡和生产焦炭的合适资源。WCCB的特征在于其可提取的蜡，木质素和碳水化合物含量，并通过热重分析来研究其热降解行为。通过热解-气相色谱-质谱法对WCCB进行了初步检查，以确定产品成分。然后将WCCB样品在螺旋，管式反应器中于450、500和550°C进行热解，并对它们的热解蜡油和焦炭产物进行表征。WCCB和炭进行了近似，最终的表面积分析。在管式反应器中，最高焦炭收率在450°C下为36％，最高蜡油收率在550°C下为53％。₉ –C ₃₆），且链长随热解温度而降低。该蜡馏分可以回收并用作船用燃料（C ₁₂ -C ₄₀），或进一步转化为柴油（C ₁₀ -C ₂₀）。