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Support Plates

THE BEST PARTNER HANBIT SOLTECH

Introduction SGS-134 SPR-804 SPR-818 SPR-809

Support Plates
The packing support performs the function of supporting the weight of packing including the weight of liquid hold-up under flooded conditions.
Regardless of the packing, each plate incorporates several critical design factors:

• Allowance should be made for absorbing the shock of pressure surges, deterioration due to corrosion, and any additional weight not separately supported.
• The support, and any beams used, should be of such a design that vapor distribution is not adversely affected.
• Liquid leaving the base of the packed bed must be discharged in such a manner as to avoid any deterioration in vapor distribution.
• Sufficient free area should be provided to permit free flow of downcoming liquid and rising gas.

Structured Packing

Supporting a structured packing is somewhat simpler than supporting random packing because the integral nature of the structured packing physically allows support by an open grid. The major design criteria is minimization of the grid cross-sectional area while providing sufficient strength.


Random Packing

Random packing uses a gas-injection type support plate that provides separate passageways for gas and liquid so both phases do not compete for the same opening. Unrestricted flow of both phases minimizes pressure drop across the plate. This is done by providing gas inlets above the liquid head, preventing excess liquid build-up. The support plates are designed to retain the various packing sizes while not restricting the capacity of the packing.

Model SGS-134

Support Grid for Structured Packing

The Model SGS-134 is used to support either metal-sheet structured packing or wire-gauze packing. The support grid is designed so that gas and liquid can pass freely and uniformly through the packing without limiting the capacity of the packing.

Construction Features :
The support grid rests on a full ledge welded to the tower wall. Larger towers may require midspan beams. Grid sections are normally bolted together but are not clamped to the support ledge. However, as an option, ledge clamps can be supplied. One-piece plates are recommended when one-piece layers of packing are used.

Model SPR-804

Gas Injection Support Plate for Random Packing

The Model SPR-804 is used to support random packing in towers greater than 900 mm ID. The plates are a gas injection type which allow for separate gas and liquid passage. This model is recognized as the typical style due to its high open area and mechanical strength.

Construction Features :
The support plate is constructed of multiple beams and is supported by a full ledge on which it typically rests freely. Sections are bolted together and plates normally do not require fastening to support ledge. However, ledge clamps can be supplied.

Model SPR-818

Gas Injection Support Plate for Random Packing

The Model SPR-818 is generally used to support random packing in towers less than 900 mm ID. The plates are a gas injection type which allow for separate gas and liquid passage. This model combines high free area with excellent mechanical strength.

Construction Features :
The support plate is made to rest on a support ledge. Plates normally do not require fastening to support ledge. However, ledge clamps or ledge bolting can be supplied. Punched opening size may vary depending on the size of packing to be retained.

Model SPR-809

Light Duty Support Plate for Random Packing

The Model SPR-809 is a corrugated support plate to use for towers between 100 – 895 mm ID supporting metal, ceramic or plastic random packings. This light-duty support plate should be used only where bed loads are not high and corrosion problems are not severe.

Construction Features :
The support plate is made to set upon a support ledge. Two-piece construction is standard. As an option, ledge clamps can be supplied for towers greater than 300 mm ID.