Minimum liquid spray density in tray packed towers – Algorithm specified by the quasi-new standard
Thread Content
This post was last edited by wiseboy on 2011-5-21 18:20, version 1. The algorithm specified in the upcoming industry standard HG/T xxxx 2011.X (temporarily referred to as the “quasi-new standard”) is as follows: Umin=0.12a for DN≤75 mm, and Umin=0.08a for DN>75 mm. Here, Umin represents the minimum liquid spray density, in m3/m2h ； a – specific surface area, m2/m3 ； DN – filler diameter, mm. 2. This is also the algorithm of PCPC. In PCPC, saturated spray = (U/Umin)×100%, and the actual saturated spray should be >100%
Mine has a Bauler ring with a diameter of 25; the packing height is 1 meter and the tower diameter is 700. What do you think is an appropriate spray density for this setup?
Spray density: U can be anywhere between (1.2~2.0)Umin.
Perform the hydraulic calculations directly; recommendations will be provided during the calculation. . .
Reply to 3# wiseboy: Teacher, could you just tell me the volume in cubic meters or the weight in tons? I can’t understand the formulas or do the calculations. . . . Thank you very much:L
Reply to 4# shan9999: L I’m not majoring in chemical engineering. . . . . . . . So I don’t understand it at all. . . .
This post was last edited by wiseboy on 2011-6-20 at 19:00. Umin=0.12X219=26.28; U=(1.2～2.0)X26.8=31.5～53.6 m3/(m2.h). Since you “don’t understand anything at all”, what use is it to tell you this little bit of information?
I don’t know this either; we specialize in manufacturing chemical fillers. We have a patent for the Bauer rings used upstairs. Feel free to talk to me more when you have time
Haha, to be precise, you work in machining. If you are studying chemical packing, you surely know this most basic of facts. Wish you progress.
Is a distributor of this kind a baffle-type one? What’s the aperture size approximately?
This post was last edited by wiseboy on 2011-6-21 at 14:27. There are various types of liquid distributors; I prefer the tray-type ones. You can refer to the relevant standard “HG/T21585.1-98 Removable Tray Gas-Liquid Distributors”, which I co-edited with Tianjin University.