废旧竹制地板热解特性研究与动力学分析

为研究废旧竹制地板的热解特性，采用热重分析法对废旧竹制地板颗粒进行热解实验，并利用控制变量法，得到地板颗粒在不同粒径、升温速率和气氛下的热解参数及热重曲线，使用Coats- Redfern 积分法进行热动力学分析，并选择最佳机理函数。结果表明，废旧竹制地板的热解分为4 个阶段，各阶段温度区间分别约为20～100、100～200、200～384、384～800 ℃。通过对热解条件的研究，粒径大小可对热解主要质量损失阶段造成影响，会使该阶段的发生延后,升温速率对热解的影响主要体现在第三阶段，升温速率越大，反应越剧烈,空气对热解有促进作用，可使反应更加充分，质量损失更大。

Pyrolysis characteristics and kinetic analysis of waste bamboo flooring

In order to study the pyrolysis characteristics of waste bamboo flooring, the pyrolysis experiments of waste bamboo flooring particles were carried out by thermogravimetry. The pyrolysis parameters and thermogravimetry curves of waste bamboo flooring particles under different particle sizes, heating rates and atmospheres obtained by using the control variable method. The Coats were Redfern integral method was used for thermokinetic analysis, and the optimal mechanism function was selected. The results show that the pyrolysis of waste bamboo flooring can be divided into four stages, and the temperature range of each stage is about 20～100 ℃ , 100～200 ℃ , 200～384 ℃ and 384～800 ℃ respectively. Through the study of pyrolysis conditions, the particle size can affect the main weight loss stage of pyrolysis, which will delay the occurrence of this stage. The effect of heating rate on pyrolysis is mainly reflected in the third stage. The larger the heating rate is, the more intense the reaction is. Air can promote the pyrolysis, which can make the reaction more sufficient and the weight loss greater.