鉴于国内生活垃圾热值的多样性，直接采用国外引进的焚烧炉会存在燃料热值 不适应等问题。对广东某 350 t /d 的炉排式垃圾焚烧炉进行适应性改造，采用床层计算 软件 FLIC 和计算流体力学 CFD 软件 Fluent 对不同结构的垃圾焚烧炉内的燃烧情况进行 数值模拟，预测前墙折焰角与后拱 U 形折角对炉膛的温度场、速度场、烟气组分的分 布特征与燃料适应性。结果表明: 消除前墙折焰角与后拱 U 形折角使炉膛燃烧区域下 移，高温区域集中在炉排与二次风出口之间，炉膛燃烧更加充分，有效降低 NOx 的产 量，从而节约脱销还原剂的用量且更适应污泥与垃圾掺混燃烧; 掺混 5% 的 LD-40 污 泥，可有效降低 CO、CO2 的生成量以及炉膛温度，减缓高温腐蚀现象。数值模拟结果 与现场实测温度相比，误差平均值小于 5% 。 

In view of the diversity of domestic solid waste calorific value，there will be some problems such as fuel calorific value is not suitable for the incinerator introduced from abroad． In this study，the adaptability modification of a 350 t /d grate waste incinerator in Guangdong was carried out and based on the bed FLIC calculation software and computational fluid dynamics software Fluent，the combustion in garbage incinerators of different structures was simulated to predict the distribution features and fuel adaptability of the temperature field，velocity field and the gas composition of the front wall folding flame angle and arch u-shaped angle of furnace． The results show that: eliminating the front wall flame angle and the U-shaped angle of the rear arch makes the combustion area of the furnace move down; when the high temperature area is between the grate and the secondary air outlet，the furnace combustion is more sufficient，effectively reducing the output of NOx，saving the amount of out of stock reductant and resulting more suitable mixed combustion of sludge and garbage． Besides，adding 5% LD-40 sludge can effectively reduce the production of CO，CO2 and furnace temperature and slow down the high temperature corrosion phenomenon． The average error between the numerical simulation results and the measured temperature is less than 5% ．