Packing Support Grating Plate – Metallic or Plastic for Different Environments

Packing support grating plate is the simplest and most widely used packing support plate. It is welded onto the tower walls directly or welded onto the support frame on the tower wall. Cast iron grating plate is widely used in the chlor-alkali chlorine alkali industry and sulfuric acid industry. Grating plate is widely used to support the structured packing. Sometimes, it is also be used to support the random packing, such as ceramic cross ring. When it is equipped with ceramic cross ring, it should be placed for several layers and the diameter is decreased by turns from bottom to top.

Materials of packing support grating plate

  • Carbon steel.
  • Cast iron.
  • Plastic. Including PP, CPVC, PVDF.
  • Stainless steel.
  • Fiber reinforced plastic.
A piece of galvanized packing support grating plate on the gray background.

PSGP-01: Packing support grating plate has excellent strength and stiffness for bearing pressure from packing and liquids.

A piece of galvanized packing support grating plate on the ground.

PSGP-02: Galvanized packing support grating plate.

A piece of PP packing support grating plate on the ground.

PSGP-03: PP packing support grating plate.

Structure of packing support grating plate

  • If the tower diameter is small, it will be supplied in a whole piece.
  • When the tower diameter is large, it should be divided into several parts and each parts width is between 300 and 400 mm. Moreover, the weight of each part should not be too weight to installing and uninstalling.
  • < 600 mm. Grating plate are supplied in a whole plate.
  • 600–800 mm. Grating plate are divided into two parts.
  • 900–1200 mm. Grating plate are divided into three parts.
  • 1400–1600 mm. Grating plate are divided into four parts.
Several carbon steel packing support grating plates are piled on the ground.

PSGP-04: Small diameter packing support grating are made into whole piece.

A piece of packing support grating plate are divided into four parts on the ground.

PSGP-05: Large diameter packing support grating are divided into several parts.

Reinforced bar

To improve the stiffness of grating plate, the upper and bottom reinforced bar should be welded onto the packing support grating plate when the tower diameter is larger than 900 mm. When the grating plate is used for supporting corrugated structured packings, it is no need to assemble grid.

packing support-grating-without-bar.jpg

PSGP-06: Packing support grating plate without reinforced bar.

A piece of galvanized packing support grating plate are divided into two parts and reinforced bars are welded onto the plate.

PSGP-07: Packing support grating plate with reinforced bar.

Packing support grating plate frame

The packing support grating plates can be supplied with or without outer frames.

  • Grating plate without frame. It will be welded onto the supporting plate or supporting ring on the tower packing.
  • Grating plate with frame. The bolts and nuts can be designed to the grating plate for easy assembling and fastening.
A piece of carbon steel packing support grating plate with grating individually.

PSGP-08: Packing support grating plate without frame.

A piece of carbon steel packing support grating plate are welded onto the frame.

PSGP-09: Packing support grating plate with frame.

Installation of packing support grating plate

  • If the tower diameter is small, the grating plate can be welded onto the tower wall directly.
  • When the tower diameter is large, the grating plate should be welded on the supporting ring or supporting plate for reinforcement.
  • < 350 mm. Grating plate are welded onto the tower wall.
  • > 350 mm. Grating plate should be welded onto the supporting ring on the tower wall.
A piece of packing support grid is installed on the support plate on the tower wall.

PSGP-10: Packing support plate are welded on the support plate on the tower wall.

Two workers are welding the packing support grid to the support ring on the tower wall.

PSGP-11: Packing support plate are welded onto the support ring on the tower wall.

Applications

  • It is suitable for supporting the corrugated structured packing and random packing.
  • it is widely used in the following tower types:
    • Sulfuric acid absorption tower.
    • Drying tower.
    • Cooling tower.

Projects

  • In the sulfuric acid cooling tower, the grating plate is placed with acid resistance ceramic cross ring on the ceramic grating plate. And the particle random packing are placed on the top.
  • In the drying tower, the grating plated is used to support the perforated corrugated plate packing. It can help to increase the open area through enlarging the strip distance.
Table 1: Specs of Packing Support Grating Plate
Item Tower Diameter
(mm)
Diameter
(mm)
Thickness Reinforced bar Quantity
Carbon Steel
(mm)
Stainless Steel
(mm)
GPPSP-01 200 204 4 3
GPPSP-02 250 247 4 3
GPPSP-03 300 297 4 3
GPPSP-04 350 347 4 3
GPPSP-05 400 397 6 4
GPPSP-06 450 447 6 4
GPPSP-07 500 496 6 4
GPPSP-08 600 596 8 6
GPPSP-09 700 696 8 6
GPPSP-10 800 796 8 6
GPPSP-11 900 897 8 6
GPPSP-12 1000 994 10 8 6
GPPSP-13 1200 1194 10 8 6
GPPSP-14 1400 1392 10 8 8
GPPSP-15 1600 1592 10 8 8
A packed tower and we can see the column internals, demister pads and random/structured packing clearly.