Structural Characteristics and Pressure Drop Properties of Stepped Rings
Briefly introduce the structural features and pressure drop characteristics of the stepped ring.
Structural Characteristics and Pressure Drop Properties of Stepped Rings
Stepped rings are high-efficiency random packing materials developed based on Pall rings. Their most significant feature is the conical flare at the top, which outperforms Pall rings in terms of pressure drop and throughput.
Structural Features
Structural Features | Description |
Conical flared opening | the upper end opens outwards like a trumpet mouth |
Ring wall windows | A row of rectangular windows at the top and bottom of the cylinder |
Internal tongue | Windows bend inwards to enhance disturbance |
Height-to-diameter ratio | 0.5-0.6 (shorter and wider than a Pall ring) |
The flared design facilitates liquid entry into the annulus, extending residence time.
Pressure Drop Characteristics
Reasons for Low Pressure Drop:
The flared design allows for a smoother gas inflow, reducing kinetic energy loss.
The increased flow cross-sectional area reduces flow velocity.
The opening provides a lateral channel, minimizing flow around the annulus.
Comparison | Stepped Rings vs. Pall Rings |
Pressure Drop | 25%-35% Lower |
Flooding Velocity | 15%-25% Higher |
Mass Transfer Efficiency | 10%-15% Higher |
Materials and Applicable scenarios
Material | Applicable Scenarios |
Metal | High vacuum distillation, pressure drop sensitive systems |
Plastic | Organic systems, absorption and washing |
Ceramic | Corrosive media, high temperature |
Particularly suitable for: High-vacuum distillation, large-diameter towers (≥800mm), high gas-liquid ratio systems
Not suitable for: Media prone to coking, extremely high viscosity (easily accumulates on the tongue plates)
Summary
Stepped rings, with their conical flared design, achieve a 25%-35% lower pressure drop and a 15%-25% higher throughput compared to Pall rings, making them particularly suitable for pressure-drop sensitive, high-throughput separation processes. We are a Chinese supplier of ceramic packed stepped rings. For more information, please contact us via email at annayu@169chem.net or WhatsApp at +8618909016373.