Applying traditional methods and technologies, for example cyclone dust collector, water film dust scrubber and flue gas desulfurization, are very hard to control air pollution from sulfur dioxide of coal-fired industrial boilers, their economic, environmental and social benefits are not very much. 应用传统的控制方法及技术,即旋风除尘器、水膜除尘器及烟气脱硫技术,很难控制燃煤工业锅炉的SO2污染,其经济效益、环境效益和社会效益也很差。