为保证氮氧化物达标排放,国内许多电厂都对锅炉进行了低氮技术改造.本文针对某电厂低氮改造后锅炉效率降低的问题进行了原因分析和燃烧优化调整,提出通过CO在线监测的方式,对CO和O2进行综合控制,进而确定锅炉的最佳运行工况.
介绍了螺杆膨胀机的工作原理和特点,探讨了螺杆膨胀机在大型火电机组中应用的方式及经济效益,并指出其在高品质热源利用中的局限性.
After commercial running of a 300MW CFB boiler,due to air preheater steam soot-blowing effect is not obvious,ash continued to accumulate at the air preheater tube row,exhaust gas temperature and draught fan current continues to rise,the unit economy index dropped ceaselessly.After modification of gas soot-blower,the exhaust gas temperature and the draught fan current were relatively stable and greatly reduced compared with the steam soot-blower.The efficiency of the boiler and auxiliary power consumption rate and others economic indicators are good,and energy conservation effect are obvious.
The utility model relates to a furnace cavity flame observation device of a coal burning boiler, in particular to a portable high-temperature inner observation mirror system, which is characterized by comprising a video camera, a protecting cover provided with a front extending pipe, a camera, a cooling device and a display system. The video camera is installed in a protecting cover inner cavity, and the camera is electrically connected with the video camera and installed in the front extending pipe of the protecting cover. The cooling device is connected and communicated with a connector of the protecting cover. A data interface of the video camera is connected with the display system. The front extending pipe of the protecting cover is capable of extending into a furnace cavity fire observation hole, and the pipe diameter is movably matched with the inner diameter of the fire observation hole. The portable high-temperature inner observation mirror system has the advantages of being capable of extending into any fire observation hole to achieve an observation point of combustion situations in the furnace cavity as a portable device, high in carrying and observing flexibility and large and random in observation range, thereby being high in observation efficiency.
