Sieve trays are widely used in the gas- liquid contactors such as distillation and absorption towers. In this article, a three-dimensional, two phase CFD model using Euler-Euler framework was developed to simulate a distillation tower with two sieve trays. Hydrodynamic simulation of air and water system in different rates of gas phase was carried out and velocity distribution parameters, clear ...

The mass-transfer trays HighspeedTray, HighFlexiTray and SieveTray belong to a new generation of mass transfer trays that enable increase the capacity-efficiency profile and the flexibility of tray columns significantly. This increase is achieved by a special vapor and liquid distribution and contact systems installed on these trays and a combination of two different tray designs. These trays c...

The computational cost of the full-scale flue gas desulfurization (FGD) tower with perforated sieve trays is too high, considering enormous scale ratio between hole at tray and relevant size tower. As a result, porous media model used to replace complex structure in this study, which has been validated for measured data both small- FGD Under lower inlet volume flow rate, simulation result four-...

Nowadays distillation is recognized as one of the economical and the most trustable separation methods in chemical, petroleum, gas and petrochemical industries. It is almost used as a first and the most applicable choice in separation methods. In this article the effect of inlet downcomer on the hydrodynamics of industrial sieve tray has been elaborated. The study was carried out by using a 3-D...

A measurement device for sieve plates have been designed and built at Helsinki University of Technology. The unit consists of a rectangular transparent container where one plate is installed. The flow path on the plate is of constant width. The plate is easy to change and sieve plates with two different diameters of holes have already been measured. The measurements have been done with two syst...

Wheat grain quality assessment is important in meeting market requirements. The thickness of grains can be used for the measurement of the mass proportion of grains that pass through a sieve. This measure is known as ‘‘screenings’’. The determination of the presence or absence of the grain crease aids the detection of a stain called blackpoint, which is usually most evident on the non-crease si...