气固两相流体系内低浓度甲烷燃烧机理及动力学研究

项目名称： 气固两相流体系内低浓度甲烷燃烧机理及动力学研究

项目编号： No.51206200

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 工程热物理与能源利用学科

项目作者： 杨仲卿

作者单位： 重庆大学

项目金额： 25万元

中文摘要： 甲烷不仅是矿井煤层气以及一些工业废气中的主要可燃成分，也是煤等固体燃料挥发分的重要组分之一。低浓度甲烷在流态化颗粒体系中燃烧时，颗粒特性和气固两相流动特性对低浓度甲烷燃烧机理的影响、颗粒体系内低浓度甲烷燃烧的本征动力学以及低浓度甲烷非均相与均相燃烧反应耦合特性等都有待于进一步深入研究。本项目采用实验研究和理论分析相结合的方法，对低浓度甲烷在流态化颗粒体系中燃烧机理和本征动力学展开研究。首先获得惰性颗粒床料对低浓度甲烷燃烧的影响规律，揭示粒径、比表面积等颗粒特性以及气固两相流动特性对甲烷详细燃烧机理的影响；进而探索低浓度甲烷在流态化催化颗粒体系内的动力学特征参数及控制因素，研究获得气固两相流动对低浓度甲烷非均相燃烧的影响机制，发展和建立更加完善的流化颗粒体系内低浓度甲烷燃烧动力学数学模型。研究结果可为低浓度气体燃料以及固体燃料挥发分在气固两相流体系中的燃烧提供理论基础，具有重要的学术意义。

中文关键词： 气固两相流；流态化；低浓度甲烷；燃烧机理；动力学

英文摘要： Methane is the main combustible components in coal bed methane and industrial exhaust gases, and also one of most important components in coal volatiles. When methane combustion in fluidized particle system, effects of particle characteristic and gas-solid two-phase flow on low concentration methane combustion mechanism should be investigated. The intrinsic kinetics for low concentration methane combustion in fluidized particle system and coupling characteristic for heterogeneous and homogeneous combustion should be further studied. The combustion mechanism and intrinsic kinetics will be studied experimentally and theoretically in this project. The influence of inert particle on low concentration methane combustion will be investigated firstly. Effects of particle characteristic and gas-solid two-phase flow characteristic on detailed methane combustion mechanism will be revealed. And then, in fluidized catalytic particle system, the intrinsic kinetic and its controlling factors will be investigated. The influence mechanism of gas-solid two-phase flow on low concentration methane heterogeneous combustion will be developed. The accurate mathematic models for low concentration methane combustion will be proposed. The results can provide theoretical supports for low concentration methane and solid fuel volatile comb

英文关键词： gas-solid two-phase flow；fluidization；low concentration methane；combustion mechanism；kinetics