纳米碳管复合催化剂降解焚烧烟气中二恶英及其原位活化的机理研究

项目名称： 纳米碳管复合催化剂降解焚烧烟气中二恶英及其原位活化的机理研究

项目编号： No.51276162

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 能源与动力工程

项目作者： 陆胜勇

作者单位： 浙江大学

项目金额： 80万元

中文摘要： 垃圾焚烧炉尾部烟气中二噁英的排放控制问题近些年受到广泛关注，为了克服以往只实现二噁英污染物转移的传统控制方法的弊端，本项目提出利用纳米碳管为载体，选择合适的过渡金属氧化物作为催化剂活性成分制备复合催化剂，用来实现焚烧烟气中二噁英的高效彻底降解。项目主要研究内容包括：纳米碳管作为载体的复合催化剂制备及其提升催化剂活性的机制研究；气相二噁英催化降解过程机理研究，影响催化降解效率的关键因素及其优化；耦合多种方法（助催化剂添加、外加电压等）实现催化剂原位活化的机制。通过本项目研究，将克服已有常规催化剂活性温度高、抗中毒能力低的缺点，实现直接以二恶英为目标污染物的纳米碳管复合催化剂的催化降解，为实际焚烧炉烟气中二噁英的减排控制提供既经济又高效地降解方案以及试验数据支撑。

中文关键词： 纳米碳管；复合催化剂；二噁英；催化降解；原位活化

英文摘要： The emission problem of dioxins in the flue gas of waste incinerator attracts much public and scientific concerns recently. In order to overcome the defects of the traditional activated carbon adsorption technology, which only transfers the dioxins from flue gas to fly ash residues,a catalytic decomposition of dioxins over composite catalyst is proposed in this project to achieve the real destruction of dioxin pollutants.The composite catalyst is to be composed of carbon nanotubes and appropriate transition metal oxides, which are chosen as the catalyst carrier and main active components, respectively. The main research contents of this project include: preparation of the composite catalyst with carbon nanotubes (CNTs) as carrier, and its mechanism to promote catalytic decomposition; catalytic decomposition pathways for dioxin removal in flue gas; optimizing kinds of key experimental parameters to improve the catalytic decomposition system; achieving in situ regeneration of catalyst activity by coupling promoter and power supply addition. The research work in this project will find an effective way to solve the restrictions of the conventional catalysis technology to treat waste incineration flue gas, such as low catalyst activity in low temperature, sulfur or chlorine poisoning, and etc. Furthermore, dioxin wil

英文关键词： CNTs；dioxin；composite catalyst；catalytic decomposition；in situ activation