Comparison of the Effective Surface Area of Some Highly Effective Random Packings Third and Forth Generation

The effective surface area ae of 14 variants of three highly effective types of packings (IMTP, Raschig Super-Ring (RSR) and Ralu-Flow) made of stainless steel or plastic is investigated as a function of the liquid superficial velocity. The packing size varied from 20 to 70 mm, and the liquid superficial velocity from 5 and 200 m/(mh). The comparison of the obtained data shows the following: Among all investigated packings at comparable values of the specific area and the liquid superficial velocities, the metal Raschig Super Rings have the highest effective area. They have also the lowest pressure drop at the same effective surface area and gas velocity. At comparable values of the specific area and the liquid superficial velocities the effective surface areas of plastic Ralu-Flow and plastic RSR are practically the same, but the first of them have lower pressure drop at the same gas velocity and effective surface area.