摘要
对山西国际能源集团河坡发电有限责任公司350 MW循环流化床(CFB)锅炉物料平衡相关的实际运行参数及满负荷状态下炉内温度和压力的变化规律进行了分析研究,得到大型CFB锅炉正常运行条件下不同负荷的相关运行参数的变化关系和炉膛平均物料质量浓度值。结果表明:随着发电功率从170 MW增加到300 MW,分离器压差从0.30 kPa增加到1.05 kPa,机组负荷再增加,分离器压差基本不变;随着发电功率增加,沿物料循环回路的炉膛下部温度、炉膛出口温度、回料阀温度呈线性增加;对大型CFB锅炉当炉膛平均物料质量浓度约3 kg/m^3可达到物料平衡要求,也符合CFB锅炉的正常运行要求。
The actual operation data related to mass balance in the 350 MW circulating fluidized bed(CFB)boiler of Hepo Power Plant were systematically investigated.The change relation of operation parameters of large-scale CFB boiler were obtained,under normal operation conditions with different loads.The change rules of temperature and pressure inside the furnace when the boiler ran at full load were analyzed,and the average material concentration in the furnace under normal operation conditions of large-scale CFB boiler was ascertained.The results show that,when the generation power was increased from 170 MW to 300 MW,the pressure difference in cyclone separator increased from 0.30 kPa to 1.05 kPa.When the unit load was rose further,the pressure difference changed little.As the generation power was increased,the temperature at the furnace bottom/outlet and at the return valve increased linearly.For large-scale CFB boilers,when the average material concentration in the furnace reached 3 kg/m3,it meets the mass balance requirements and satisfies the demands for normal operation of the CFB boilers.
作者
张国胜
ZHANG Guosheng(Gemeng International Energy Co.,Ltd.,Taiyuan 030002,China)
出处
《热力发电》
CAS
北大核心
2018年第9期133-137,共5页
Thermal Power Generation
关键词
CFB锅炉
物料平衡
物料浓度
炉膛床温
分离器
回料阀
发电功率
在线监测
CFB boiler
mass balance
material concentration
bed temperature in furnace
cyclone separator
return valve
generation power
online monitoring
