Porous ceramic ball
HQ-MH Porous ceramic balls are also called filtering balls. It is made by making 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, asphalting, heavy metal, and iron ions of less than 25um. If the porous ball is set on the top of a reactor, the impurities fail to be eliminated in the former process could be adsorbed in the pores inside the balls, thereupon protect the catalyst and prolong the operating 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.
Technical Specification
| Item | HQ-MH-1 | HQ-MH-2 | HQ-MH-3 |
| Al2O3 (%) | 20-80 | 20-80 | 20-80 |
| Al2o3+SiO2 | ≥90 | ≥90 | ≥90 |
| Fe2O3 | ≤1 | ≤1 | ≤1 |
| Pore size，um | 0.5-35 | 40-100 | 110-1000 |
| Porosity，% | 20-30 | 15-25 | 15-25 |
| Air permeability，m3·cm/m2·h·10Pa | 0.2-0.8 | 1-6 | 7-50 |
| Acid resistance，% | ≥98 | ≥98 | ≥96 |
| Alkali resistance，% | ≥85 | ≥85 | ≥80 |
| Thermal shocking resistance，(△T)℃ | 800 | 800 | 800 |
| Crushing strength，N/grain | 100-20000 | 100-20000 | 100-20000 |
| Bulk density，kg/m3 | 1200-1500 | 1200-1500 | 1200-1500 |
Size
HQ-MH Porous ceramic balls are divided into 12 grades by reference to Al2O3 content varied from 25% to 80%, and every more than 5% constitutes a grade, but 12 sizes by reference to the diameter, such as Φ3, Φ6, Φ8, Φ10, Φ13, Φ16, Φ20, Φ25, Φ30, Φ38, Φ50, Φ75.
The products in other grades and sizes can be designed and manufactured if to the user’s request.