文献类型：期刊文献

中文题名：垃圾焚烧炉炉排气固两相燃烧数值模拟

英文题名：CFD Model of Gas-Solid Combustion in Moving Grate MSW Incinerator

作者：单朋[1];夏梓洪[1];陈彩霞[1];杜海亮[2];黄洁[2];白力[2]

机构：[1]华东理工大学资源与环境工程学院,上海市徐汇区200237;[2]上海康恒环境股份有限公司,上海市青浦区201703

年份：2020

卷号：40

期号：2

起止页码：601

中文期刊名：中国电机工程学报

外文期刊名：Proceedings of the CSEE

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

语种：中文

中文关键词：垃圾焚烧;炉排模拟;气固两相燃烧;颗粒动力学理论

外文关键词：municipal solid wastes(MSW)incineration;grate modelling;gas-solid combustion;kinetic theory of granular flows(KTGF)

摘要：CFD模拟是研究垃圾焚烧的重要方法之一,对焚烧炉的设计和运行有重要指导意义。炉排燃烧模拟是链条式焚烧炉模拟的关键部分。利用FLUENT平台开发炉排气固两相流动与燃烧模型,引入颗粒动理学理论(KTGF)描述床层固体的流变性质,考虑垃圾在炉排上的水分蒸发、脱挥发分、挥发分燃烧和焦炭燃尽过程。额定工况模拟结果显示,水分蒸发主要发生在炉排干燥段,对应的床层温度较低,约为400K;挥发分释放及燃烧聚集于燃烧段,最高温度1400K;剩余焦炭继续燃尽于第三段炉排,温度维持在900K。将炉排计算结果导入三维炉膛,经与现场温度测点对比,验证模型的有效性。进一步对比80%和110%工况下的炉排燃烧情况,结果符合预期。研究切实考虑了炉排的实际结构,实现炉排-炉膛的直接耦合计算,为大型炉排式垃圾焚烧炉的CFD模拟提供了一种高效的实用方法。
Computational fluid dynamics(CFD)modelling is an important method to investigate MSW combustion,and is helpful for the design and operation of incinerators.Modelling in-bed thermal conversions plays a key role in the moving grate incinerator simulation.In the present work,an in-bed gas-solid combustion model based on the FLUENT platform was proposed.The rheological properties of the solid phase were described by the kinetic theory of granular flows(KTGF).Moisture evaporation,devolatilization,volatile gas combustion,and char-O2 combustion were taken into account.Maximum continuous rating(MCR)case shows that the evaporation mainly occurs in the drying section of grate,and the bed temperature is about 400 K;volatile is released and ignited in the combustion section with a maximum temperature of 1400 K;char is burnt in the third section with a temperature of 900 K.The bed top conditions of MCR case were then used for 3D steady furnace simulation.The temperature results were verified by the on-site measurements.Case 80%and case 110%were also simulated,the results are as expected.A realistic grate structure was considered and direct grate-furnace coupling is realized,which provides an efficient and practical method for CFD simulation for industrial moving grate MSW incinerators.