新型旋风分离器去除高温气体中超微粉尘

在旋风分离器的基础上,内加耐高温金属多孔材料,利用离心、过滤和吸附的综合作用,使高温含微细固体粉尘的气体得以彻底去除,选用了10μm,20～30μm,30～40μm孔径的耐腐蚀、耐高温的金属多孔材料进行了分离实验。结果表明,因微粒在多孔材料中的吸附、过滤材质和滤饼的共同作用,3种材质都可使纳米级的粉尘完全去除,总压差随使用时间的增加而增加,滤饼厚度也增加,而达到一定压差后会自然脱落,厚度不会再增加。经再生实验表明,10μm孔径的多孔材质其反吹彻底,成片脱落;20～30μm和30～40μm材质其刮落性比较突出。

A new type cyclone to separate super-fine powder from high temperature gas

The common cyclone is inserted inside with high-temperature-resistant porous metal materials to thoroughly remove the high-temperature gas containing fine dust. The separation experiments are carried out with aperture 10μm, 20～30μm, 30～40μm corrosion-resistant and hightemperature-resistant porous metal materials. The results prove that both the absorption and filtration from the porous metal materials remove the nano-dust. The overall pressure difference increases with the time, so does the filter-thickness but would fall down after a fixed time and will increase again. The regeneration experiment shows that porous materials with 10μm aperture can back-blow completely, while the scratching-off properties of aperture 20～30μm or 30 ～40μm material are obvious.