协同处置油泥对煤粉炉内热工制度影响的数值模拟  

Numerical Simulation of the Influence of Co-processing of Oil Sludge on Thermal Regulation in Pulverized Coal Boiler

作　　者：杨智琪 马腾 王萌 洪鎏 陈德珍[1,2] 尹丽洁 YANG Zhiqi;MA Teng;WANG Meng;HONG Liu;CHEN Dezhen;YIN Lijie(School of Mechanical Engineering,Tongji University,Shanghai 200092;Shanghai Engineering Technology Research Center of Multi-Source Solid Wastes Co-Processing and Energy Utilization,Shanghai 200092)

机构地区：[1]同济大学机械与能源工程学院,上海200092 [2]上海多源固废协同处理和能源化工程技术研究中心,上海200092

出　　处：《环境卫生工程》2023年第1期55-62,共8页Environmental Sanitation Engineering

基　　金：上海市“科技创新行动计划”自然科学基金项目(22ZR1465900)。

摘　　要：基于欧拉-拉格朗日模型构建了煤粉炉协同处置油泥的数值模拟模型,对油泥的挥发分析出进行了动力学分析。以某燃煤电厂300 MW锅炉为对象,研究协同处置油泥对煤粉炉内热工制度的影响,计算了不同协同处置量时煤粉炉内温度分布、烟气成分分布以及挥发分析出的变化。结果表明:协同处置油泥可以促进煤粉挥发分的析出和焦炭的燃烧,协同量增加时主燃区最高温上升,CO浓度降低。在计算工况下,协同量为5%时,炉膛燃烧区及燃尽区平均温度变化最小,各组分浓度变化趋势与纯煤粉燃烧相似,因此推荐协同量为5%。A numerical simulation model of co-processing oil sludge in pulverized coal boiler was constructed based on the Euler-Lagrange model,the kinetic analysis of the volatilization of oil sludge was carried out.A 300 MW boiler of a coal-fired power plant was taken as an example,the influence of co-processing of oil sludge on the thermal regulation in the pulverized coal boiler was studied.The changes of temperature distribution,flue gas composition distribution and volatile in the pulverized coal boiler under different co-processing quantities were calculated.The results showed that the co-processing of oil sludge could promote the release of volatile from pulverized coal and the combustion of coke.When the co-processing amount increased,the highest temperature in the main combustion zone increased and the concentration of CO decreased.Under the calculation condition,when the co-processing amount was 5%,the average temperature in the furnace combustion zone and the burnout zone changed the least,and the variation trend of each component concentration was similar to that of pure pulverized coal combustion,so the recommended co-processing amount was 5%.

关 键 词：含油污泥 煤粉燃烧 协同处置 数值模拟 

分 类 号：X74[环境科学与工程—环境工程]