蜜桃丶麻豆91制片厂,2021国产精品久久久久,国产男女视频在线观看,九九九国产在线,罗晋唐嫣结婚视频,秋霞电影美女视频,性感美女广场舞视频

[ Products Description ]
Porous ceramic balls is also called filtering balls. It is made by adding 20-30% pores inside the inert ceramic balls. Therefore it can be used not only for supporting and covering the catalyst, but also for filtering and eliminating the impurities of grain, gelatin, asphaltine, heavy metals and iron ions of less than 25祄. If the porous ball is set on the top of a reactor, the impurities fail to be eliminated in former process could be adsorbed in the pores inside the balls, thereupon protect the catalyst and prolong the operatig cycle of the system. As the impurities present in the materials are different, the user can select the product by their sizes, pores and porosity, or if necessary, add molybdenum, nickel and cobalt or other active components to prevent the catalyst from coking or poisoning.