Structured Packing HETP & Pressure Drop Calculator
Calculate Height Equivalent to a Theoretical Plate (HETP in mm), specific dry and irrigated pressure drop (mbar/m), and capacity limit per Sulzer / Koch-Glitsch standards.
Packing Type & Operating Gas
Packing Efficiency & Pressure Loss
Frequently Asked Questions
Why is structured packing preferred over trays in vacuum distillation?
Structured packing exhibits extraordinarily low pressure drop per theoretical stage (~0.3 to 1.0 mbar/stage vs 4 to 8 mbar/stage for trays). This minimizes bottoms reboiler temperature, preventing thermal decomposition of temperature-sensitive chemicals.
What does the "Y" and "X" designation mean in structured packing?
Y-packing has corrugated sheets angled at 45° to the vertical axis (standard compromise between capacity and efficiency); X-packing has sheets angled at 60° (providing lower pressure drop and higher capacity at slightly reduced efficiency).
What is the maximum bed height before requiring a liquid redistributor?
To prevent liquid wall-channeling, structured packing beds are limited to maximum continuous heights of 6 meters to 8 meters (or 15 to 20 theoretical stages) between liquid collection and redistribution assemblies.