Porous ceramic ball that is also called the filtrating ceramic ball is prepared by opening holes on the basis of the former inert alumina. Thus, there is the same bulk void volume as the inert ceramic ball. Therefore, it can play the roles of covering or supporting the catalyst, and separating the gas and liquid. At the same time, there is 20-30% pore volume of structure increased, which has the adsorbing capacity, so that it may be utilized to the impurities filtrating in the oil. As there are such different patterns in the oil as the granular, gum forming, asphaltene, and heavy metals, though these impurities have been filtrated some through the raw material filtrating equipment, there are rather some of the impurities remained (such as <25 μ M granular impurities and ferrous ions). If the porous ceramic ball is loaded on the top of the reactors, the impurities, which is still remained through the raw material filtrating equipment, can be adsorbed in its pores, therefore, the catalyst is protected and the under-stream period is guaranteed.
As the sorts, content, and particle sizes of the impurities in the raw materials within the hydrogenation and adsorption or drying are different among the hydrogen producing, customers can choose the porous ceramic ball according to the different pores diameter and the number of pores. In addition, if it is needed, customers could load the active compositions as Mo, Ni, and Co etc., in order to protect the catalyst from carbon laydown, poisoning or agglutinating.
1. It can excellently filtrate the coke powder, and efficiently protect the catalyst, so that under-steam period is prolonged;
2. It can increase the flux areas of the oil, and the system resistance is reduced from 0.15MPa to 0.10MPa;
3. The processing capacity of the equipment improved by 20.6%, and the infiltration ratio of catalyst is achieved to the maximum of 35.96%.
Porous diameter, µm
Ratio of gas pores, %
Ratio of gas permeability , m³·cm/m²·h·10Pa
Acid resistance, %
Alkali resistance, %
Spalling resistance, ΔT ºC
Crushing strength, N/particle
100-20000 (Different as the specification and size)