Calculation Examples
Jayne Products, based
on 20 years’ experience in vapor phase clearing uses 4 liters of JPX for 1
cubic meter of column or vessel internal volume.
To calculate the volume requires the
following calculation:
For example
· Let’s take a crude atmospheric tower that is 30 meters high
and has a diameter of 7 meters. Internally, it has 40 trays, all of a
bubble-cap design.
· To calculate the tower volume, without taking account of the
dished-ends, use
V= πR²xL V=π3.5²
(30) =1,154m³
The volume of JPX required would be
calculated a 1,154 x 4 = 4,616 liters.
1 drum JPX = 208 liters so 4,616 ÷ 208
= 22 drums of JPX. This is equivalent to a liquid circulation: fill column 20%
to cover the trays and provide a positive pump suction will require 1,154 x 20%
= 230m³ and using 2% concentration of JPX will require 230x .02 or 4.6m³ JPX =
total of 22 drums.
We always favor the vapor phase over
liquid phase to cut the decontamination time by 2/3 and eliminate the disposal
of the circulation solution.
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