木质包装废弃物热化学反应转化特性研究

Study on Thermochemical Characteristics of Wood Packaging Waste

中文关键词: 木质包装废弃物  红橡木材  热化学特性  热重红外联用  热解气质联用

英文关键词: wood packaging waste  red oak  thermochemical characteristics  TG-FTIR  Py-GC/MS

中文摘要:

      采用热重红外联用分析和热解气质联用分析技术，考察了红橡木材包装废弃物的热分解、气相组分生成及分布规律。研究表明:在800 ℃终温和10 ℃/min的升温速率条件下，红橡木材包装废弃物的主要热解阶段集中在220~385 ℃，失重率为78.99%；高温区热解活化能明显低于低温区，说明随着温度的升高较容易发生热解反应；热解初期主要是水分和部分酸类、醛类物质的析出，主要热解阶段为H-2O，CO-2，CO，CH-4和酸类、醛类、酯类等的大量析出，在热解后期主要为CO-2和CH-4的析出；热解析出的气体主要为含氧官能团的有机化合物，包括酸类（19.29%）、醛类（15.14%）、酯类（9.97%）、酮类（9.00%）、糖类（8.59%）、酚类（5.29%）、醇类（3.63%）等。

英文摘要:

      Characteristics of thermal decomposition and gas components generation and distribution of wood packaging waste of red oak were investigated using TG-FTIR and Py-GC/MS. The result showed that at 800 ℃ and 10 ℃/min, the main stage of pyrolysis concentrates in the range of 220~385 ℃ and the total weight loss is 78.99%; activation energy in high temperature range is significantly lower than that in low temperature range, so it is easier for the thermal decomposition in higher temperature; H-2O and part of acids and aldehydes are generated in the initial stage of pyrolysis; A large amount of H-2O, CO-2, CO, CH-4, acids, aldehydes, esters is released in the main stage; CO-2 and CH-4 are released in the later stage; the pyrolysis vapors include oxygen-containing functional compounds, such as acids (19.29%), aldehydes (15.14%), esters (9.97%), ketones (9.00%), sugars (8.59%), phenols (5.29%), and alcohols (3.63%), etc.