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前言目前,我国电厂的水膜除尘器都是园柱形筒体的。除尘器进口短管与水平成8°～10°的下倾、与筒体呈切向布置。这种除尘器普遍存在着烟气带水现象。这不但污染了环境,而且加剧了除尘器出口烟道的积灰和吸风机叶片的粘灰,因而造成吸风机震动(而配置干式除尘器时,吸风机的震动则大多数是由于磨损而引起的),影响着锅炉的安全经济运行。在减少烟气带水方面,不少电厂已积累了一些经验。如环形喷咀加档水罩,将除尘器筒体在环形喷咀以上的部分加高等。这些措施虽然有一定的效果,但是有局限性。
Foreword At present, the water film precipitators in China’s power plants are cylindrical cylinders. Imported short-cleaning precipitator into the level of 8 ° ~ 10 ° downtilt, and the cylinder was tangentially arranged. This dust collector prevails flue gas water phenomenon. This not only pollutes the environment, but also exacerbates the fouling at the outlet flue of the precipitator and the sticky ash of the suction fan blades, thus causing the suction fan to vibrate (when the dry-type dust remover is configured, the vibration of the suction fan is mostly due to wear Caused), affecting the safe and economical operation of the boiler. Many power plants have accumulated some experience in reducing flue gas water. Such as the annular nozzle plus gear housings, the dust collector cylinder in the annular nozzle above the part of the higher and so on. Although these measures have a certain effect, but there are limitations.