SS304 Structured Packing Exporting Diameter 800mm Mela Pak 250Y
Hualai factory has produced and deliverd more than 1,000 cubic
meters of metal structured packing in the past 3 years. In a
separate workshop with lines of brand new machines, we are able to
make 20-30 cubic meters of high quality tower packing per working
day.
Below are the main types we usually make. Each type has two styles,
different in the wave clination angle to the axis, 30 degrees (X
style) and 45 degrees (Y style). For example, 250Y structured
packing, each wave has a 45 degrees angle to the axis, and the
neighboring plates' waves are vertical to each other. We can also
help make other types such as 450, 252, 452, etc. as per customer
request.
Type | Surface area | Void fraction | Wave height | Nt | ΔP | Max.F-factor |
m2/m3 | % | mm | m-1 | Pa/m | m/s.(kg/m3)0.5 |
125 | 125 | 98 | 25.4 | 1-2 | 150 | 3 |
250 | 250 | 97 | 12.5 | 2-3 | 200 | 2.6 |
350 | 350 | 94 | 9 | 2.0-2.5 | 300 | 2 |
500 | 500 | 92 | 6.3 | 4-5 | 400 | 1.8 |
700 | 700 | 85 | 4.5 | 5-7 | 650 | 1.6 |

I have a customer who is a senior engineer in modular refinery
system. Their oil and gas processing systems are famous in Russian
and Middle Asia market. They are widly used in privately onwed
refinery plants and some pilot testing projects. I am lucky because
he knows well about the structured packing and has in mind the type
wanted. Frankly speaking, though I know some basic features of each
type of the packing, and also can do some simple calculation on it,
it is far away from enough to provide professional suggestions
suitable for the whole system.
During the communication, everything went well except that he
questioned the unit weight of our 250Y column packing, that is
different from a notable manufacturer. Finally we found out the
difference came from the plate thickness. The popular plate
thickness for metal structured packing is now 0.1mm, while his data
was based on 0.2mm plate. We can fabricate 0.2mm plate tower
packing, too. If the flow media is not so corrosive, it is not
necessary to choose the thicker plates with higher cost. Will you
agree with me please?

Generally speaking, the X style has higher through capacity and
lower pressure drop, while the Y style has higher efficiency and a
little higher pressure drop than X style. But the total pressure
drop of structured packing is at a low level. Once I wondered if Y
style will need more material than X style per unit. I had no
samples on hand with the same type and demension to compare. You
can not imagine how I get it out that the X and Y style requires
the same quantity of material. I draw some draft drawings according
to the corrugated plate and meseaured the length of each wave and
get the same result by adding them together. A little joking,
right? That is how I study and learn about our products step by
step.
I have a dream that one day I can provide professional suggestions
to professional buyers of our metal structured packing.
This is An Li in Hualai factory. Welcome your inquiry!