目前国内一些大、中型号锅炉有一部分安装了除尘器,但大都是老式、干式的,如沉箱式、螺漩式、瓷管式等多种。这些除尘器只是能回收一部分烟尘中的较大颗粒状粉煤灰,细颗粒、烟灰等照样排放。至于脱硫、除害气根本谈不到。有极少大、中型锅炉安装了湿性除尘器,如冲浪 At present, some large and medium-sized boilers are equipped with dust catchers, but most of them are old-fashioned and dry ones, such as caissons, spiral vials and porcelain tubes. These dust collectors can only recover part of the larger particles of dust in the fly ash, fine particles, such as ash emissions. As for desulfurization, it is impossible to remove harmful gas. There are very few large, medium-sized boilers installed wet dust collector, such as surfing