可燃固体废弃物热化学转化基元表征及机理研究

张衍国 蒙爱红 祝捷 吴晋沪 武景丽

摘 要：可燃固体废弃物种类繁多、成分复杂，在处理处置和利用过程中需要尽可能的降低污染。该研究旨在建立适合我国可燃固体废弃物特性的组分热化学表征模型，掌握组分在不同氧化剂调控气氛下的热化学反应模型和不同尺度下的传热、传质机理，研究热化学反应过程中的复杂组分的交互影响规律；探索热化学反应氧化剂调控对二噁英及其前驱物的影响和耦合关联特性，形成低二噁英排放的新一代热化学反应机制。

关键词：热化学反应 “基元” 可燃固体废弃物

The Mid-term Tech-report of Investigation on the Thermachemical Treatment Principles and Pseudo-compositions Reaction Model of Combustible Solid Waste

Zhang Yanguo1 Meng Aihong1 Zhu Jie1 Wu Jinhu2 Wu Jingli2

（1.Tsinghua University；2.Qingdao Institute of BioEnergy and Bioprocess Technology，Chinese Academy of Sciences）

Abstract：The combustible solid waste is characterized with various kinds and complex composition， which needs to reduce its pollution in the treatment and utility processes. The aim of this project is to propose the pseudo-compositions reaction model for the thermochemical reaction of the combustible solid waste， to clarify their heat and mass transfer principles and reaction models at different oxidant-concentration atmosphere， to elucidate the inter-impact of complex components， and to study impact of the oxidant on dioxins-related compound to find out a new kind reaction type to lower dioxins emission. The research results in the first two years， the year of 2011 to 2012， are reviewed in this mid-term report. A database of different waste pyrolysis/combustion was established， in which the proximate and ultimate analysis and kinetics parameters were included. The pseudo- compositions system was suggested. Cellulose， hemicellulose， lignin， pectin and starch are selected as pseudo-compositions for food residue and wood-like biomass waste； PE， PS and PVC are picked as those for plastic waste； terylene and cellulose are as those for textile waste. The characteristics and kinetics of pyrolysis/combustion of the typical solid waste were investigated at different atmosphere. Based on these， the kinetic models were proposed. In the investigation on chemical looping combustion， different iron-based oxygen- carriers with good reactivity and cycle reaction performance were picked out and studied using thermogravimetric analyzer （TGA） and temperature programmed reduction （TPR）. The lab-scale and mid-scale oxygen-carriers test system for chemical looping reaction were designed.

Key Words：Thermochemical reaction characteristics； Pseudo-component； Chemical looping combustion

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