Packing with stamped horizontal lamellae operating at extremely low liquid loads II. Effective surface area

作者：Kolev Nikolai^*; Kralevi Borislav; Razkazova Velkova Elena

来源：Chemical Engineering & Technology, 2008, 31(1): 103-109.

DOI：10.1002/ceat.200700392

• liquid flows
• packed bed columns
• surfaces

In the first part of this investigation a new packing material, specially designed for operation at extremely low liquid superficial velocity, was presented [1]. It consists of narrow, horizontal lamellae stamped in vertical plates with small distances between them. The liquid flows horizontally, wetting practically the whole surface of the lamellae, i.e., strips. One of the most important performance characteristics of packings is their effective surface area. This surface can be either smaller or greater than the specific surface [2]. The results of the investigation into the effective surface of the new packing are presented here. They show that it slowly increased with liquid superficial velocity, L. At the lowest liquid superficial velocity, L, equal to only 2.6.10(-5) m(3)/(m(2)s) for a packing with a specific area of 132.7 m(2)/m(3), and the effective surface area is more than 50 % higher than the specific one. At L = 10.10(-5) m(3)/(m(2)s), for the same packing, the effective surface is about twice as high as the specific one.

• 出版日期2008-1