摘要
我国某生活垃圾焚烧项目进口炉排炉为绝热炉墙设计,在运行过程中会出现结焦严重的问题。通过对焦块进行表征分析发现,其主要成分为钙黄长石,容易形成低温共融物。当炉膛温度过高时,焚烧产生的灰粒易软化、熔融,黏附在高温炉墙表面结成焦块。针对此问题,该项目对原焚烧炉侧墙进行模块化设计,使得各段炉墙之间封闭独立,并在局部高温区域将原绝热炉墙改造为风冷墙,以降低炉墙温度。改造后,炉墙结焦问题得到明显改善,增强了焚烧炉运行的安全稳定性,提高了锅炉热效率,节省运行成本,项目改造达到预期效果。
The imported grate furnace of a domestic waste incineration project was designed with insulated furnace wall,and the coking problem was serious during operation.Through characterization analysis,it was found that calcium feldspar was the main component of the coke block,which was easy to form low-temperature eutectic mixture.When the furnace temperature was too high,the ash particles generated by incineration were prone to softening and melting,and adhered to the furnace surface with high temperature to form coke blocks.To solve the problem,the project modularized the side wall of the original furnace,making each section of the furnace wall enclosed and independent.In the local high-temperature area,the original insulated furnace wall was transformed into the air-cooled wall to reduce the temperature.After the renovation,the coking problem has been significantly improved,enhancing the safety and stability of the incinerator operation,improving the furnace thermal efficiency,and saving the operating costs.The project renovation has achieved expected results.
作者
张莹莹
刘晓吉
喻武
封全武
张泉
叶江
李烨
ZHANG Yingying;LIU Xiaoji;YU Wu;FENG Quanwu;ZHANG Quan;YE Jiang;LI Ye(CECEP(Feixi)WTE Co.Ltd.,Hefei Anhui 230000;CECEP Environmental Protection Co.Ltd.,Beijing)
出处
《环境卫生工程》
2025年第1期93-97,共5页
Environmental Sanitation Engineering
基金
国家重点研发计划项目(2020YFC1908600)。
关键词
进口炉排炉
结焦
低温共融物
风冷墙
imported grate furnace
coking
low-temperature eutectic mixture
air-cooled wall
