Reference packing

Keep in mind that if you reached this step, you are in an uncertain region. The uncertainty is even greater if the system nature has a considerable effect on packing pressure drop. Proceed with extreme caution, recognizing that your calculation in this case will at best be only an educated guess. It may pay to consider using the reference packing instead of the one you had in mind because it offers more confidence in the reliability of the performance prediction. 

References Packing leaflet LI 104-H 12/86, LIM 0104-Q 10/89, ST9, STIO, ST15, ST57, ST58, ST82, STIOI. 

References Packing leaflet LI 0470-A 11/86, LIM 0470-H 10/89, ST66,ST103, ST117. 

References Packing leaflet LI 0494-E 1/87, LIM 0662-H 10/89, ST12, ST17, ST44, ST96, ST104. 

References Packing leaflet LIM 0675-F 10/89, ST35, ST42, ST48, ST65, ST104. 

References Packing leaflet LI 0339-H 12/86, ST15, ST34, ST42, ST82. 

References Packing leaflet LI 0622-D 1/87, LIM 0622-M 10/89, ST8, ST13, ST17, ST25, ST35, ST45. 

Bonded alkyl Abbreviation C atoms in chain total Reference packing... 

The total area aj is a given value, supplied by the manufacturer (see Appendix 2). However, let us consider several types packing of the same nature but different sizes, and characterize that size by a similarity ratio k, which is the ratio between the size of the packing in question and that of the reference packing. In this case, the number of elements contained in the imit voliune varies with k, and the surface of each element with k. The total voliunetric area aj therefore varies with k . 

The parameter fi in Eq. (5-3) is a packing-specific form factor. A and B are packing parameters, which were determined for a given reference packing element [1,2]. 

Fig. 88. The pressure drop per mass tran unit for the reference packings (Table 34) plotted vrasus the volumetric mass transfer coefficient...

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