0.15mm metal plate 125Y structured packing in tail gas treatment
1. Classification of structured packing
Packed tower is a kind of gas-liquid mass transfer equipment with a
large number of packings in the tower. Packed column was used in
industrial production in the middle of the 19th century. Since
then, it has developed with plate column, forming two different
types of gas-liquid mass transfer equipment.
2. The structure of packed tower using structured packing
The body of the packed tower is a vertical cylinder with a
supporting plate at the bottom. The packing material is placed on
the support plate in a integral way. A packing pressing plate is
installed above the packing to limit the movement of the packing
with the updraft. The liquid is added from the top of the tower,
sprayed onto the packing through the liquid distributor, and flows
down the packing surface. The gas is sent from the bottom of the
tower and distributed by the gas distribution device (gas
distribution device is generally not set for small diameter tower),
then it is countercurrent with the liquid and continuously passes
through the gap of the packing layer. The gas-liquid two-phase is
in close contact with the packing surface for mass transfer. Packed
tower is a continuous contact gas-liquid mass transfer equipment,
the two-phase composition changes continuously along the tower
height. Under normal operation, the gas phase is continuous phase
and the liquid phase is dispersed phase.
3. Structural dimension and characteristic parameters of stainless
steel orifice corrugated packing.
| Item | Unit | 125X | 125Y | 250X | 250Y | 350X | 350Y | 500X | 500Y |
| corrugation height h | mm | 24.0 | 11.5 | 8.4 | 6.0 |
| corrugation inclination θ | (°) | 30 | 45 | 30 | 45 | 30 | 45 | 30 | 45 |
| corrugation distance 2B | mm | 39.6 | 19.0 | 14.0 | 9.9 |
| corrugation angle β | (°) | 79.0 | 79.1 | 79.6 | 79.0 |
| void fraction ε | δ=0.15mm | % | 99.4 | 98.6 | 98.0 | 97.2 |
| δ=0.12mm | % | 99.5 | 98.9 | 98.4 | 97.8 |
| δ=0.10mm | % | 99.6 | 99.1 | 98.7 | 98.2 |
| Perforated hole diameter d0 | mm | 4.5 | 4.5 | 4.0 | 4.0 |
| Opening rate σ | % | 8.5-9.5 | 8.5-9.5 | 9.0-10.0 | 9.0-10.0 |
| radius of curvature of the top circle of corrugation angle R | mm | ≤2.0 | ≤1.4 | ≤0.9 | ≤0.5 |
Note: The influence of opening rate on the plate is not calculated
4. structured packing workshop
5. HG/T 21559.2—2005— structured packing standard
Standard No. - year No. - packing model - inner diameter of tower Φ
(mm)
For example, the inner diameter of packing tower is Φ 600mm, and
p250i type stainless steel orifice corrugated packing is used,
which is marked as follows: HG/T 21559.2—2005—P250I—600.
3.2 Specifications and characteristics
3.2.1 Stainless steel orifice corrugated packing is a number of
corrugated plates pressed from stainless steel strip, which are
vertically stacked and assembled into a disc-shaped structured
packing according to the requirements of a certain diameter. The
corrugations of the adjacent corrugated plates are inclined in the
opposite direction, and the corrugations of the upper and lower
adjacent packing plates are 90 ° crossed.
3.2.2 Before the corrugated plate is pressed, it is necessary to
punch holes on the plate in advance and press the fine grain, or
use the rolling grain equivalent to the fine grain.
3.2.3 Eight types of stainless steel orifice plate corrugated
packing are listed in the table. The characteristic parameters of
the type selection are the specific surface area of the packing and
the angle of the corrugation, which can be selected according to
the process design requirements.
Stainless steel orifice corrugated plate
h: corrugation height (mm)
2B: corrugation distance (mm)
β: corrugation angle (°)
δ: plate thickness (mm)
S: corrugation length (mm)
R: radius of curvature of the top circle of corrugation angle (mm)
every year we manufacture and supply hundreds of cubic meters of
metal structured packing in different models. There are many
popular types and materials for option. Custom order is welcome,
too! We are happy to help with what you need!
