Beijing Silk Road Enterprise Management Services Co.,LTD
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Pall ring is a new type of filler improved on Raschig ring. Compared with the later, pall ring has improved the liquid distribution of filler layer greatly, with open windows on ring sidewall. Therefore it has productivity, low resistance, operating flexible and higher efficiency. Pall ring is widely applied to industry. It is still one of major annular fillers that has been adopted.
| diameter×height×thickness (mm) | specific surface area (m2/m3) | Porosity (m3/m3) | Number in 1 m-3 | Density of the pile (kg/m3) | Dry filler factor F |
| 76×76×1.2 | 71 | 0.961 | 1830 | 308 | 80 |
| 50×50×0.7 | 109 | 0.960 | 6500 | 275 | 124 |
| 38×38×0.6 | 146 | 0.959 | 15180 | 318 | 165 |
| 25×25×0.5 | 219 | 0.950 | 51940 | 393 | 255 |
| 16×16×0.3 | 362 | 0.949 | 214000 | 396 | 423 |
Pall ring takes an advantage that as random packing being mass produced with standard elements, the delivery periods are relatively short from storage. Because the pall ring can be used in many applications regardless the size of columns, we hold a stock of most types of random packings for fast delivery.
Random column packing is packaged and shipped by volume. A volume adjustment factor must be applied to the calculated column. Geometric volume to estimate the shipping volume required to properly fill a packed bed to account for edge and settling effects. The volume adjustment factor depends upon the packing shape and size and the bed diameter.
A contingency allowance for installation losses, typically around 5%, should be added to the shipping volume calculated above.
1. Liquid extractors;
2. NH3 extraction devices;
3. Ethylene extraction columns;
4. Carbon monoxide converters;
5. Petrochemical and medical equipment.
6. Dimethyl terephthalate running column;
7. Mass-transfer columns separation devices;
8. Carbon dioxide and hydrogen sulphide absorption and flash tower.
