02 / TOWER PACKING
Random Packing
Mass-transfer media for absorption, stripping, distillation and gas–liquid contacting — in metal, plastic and ceramic.
Choosing a random packing material
Random packing fills the bed of a packed column, creating the gas–liquid contact surface that drives absorption, stripping and distillation. Selecting the right packing means balancing surface area, void fraction, pressure drop and mechanical strength — which vary most between the three material families below. Random packing (แรนดอมแพ็คกิ้ง) คือ media เทกองในหอเพื่อสร้างพื้นที่สัมผัสแก๊ส–ของเหลว.
| Parameter | Metal | Plastic | Ceramic |
|---|---|---|---|
| Max temperature | up to 800 °C+ | 120–160 °C | up to 1,100 °C |
| Chemical resistance | Grade-dependent | Excellent | Excellent (excl. HF) |
| Void fraction (typical) | 93–98% | 89–97% | 68–81% |
| Best for | high-temp, high-pressure, deep beds | corrosive service at low cost | hot gas & strong acids |
Contact PCX for column sizing, packing selection and volume calculations.
By material
HIGH-TEMP · HIGH-STRENGTH
Metal Random Packing
Pall ring, improved Pall ring, Raschig ring, Intalox saddle, Cascade Mini Ring and VSP ring in 304/316/316L, titanium, Hastelloy and more.
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CORROSION-RESISTANT · LOW COST
Plastic Random Packing
Pall ring, super saddle, Heilex ring, floating ball and more in PP, PVC, CPVC, PVDF and PTFE for corrosive service.
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HOT GAS · STRONG ACIDS
Ceramic Random Packing
Intalox saddle, Raschig ring and inert ceramic ball for hot gas, strong acids and catalyst-bed support.
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