Distillation Columns with Structured Packings in the Next Decade

Experimental investigation of liquid distribution over structured packing

“…The geometrical characteristics of the regular packing, the physical properties of liquid and packing material, and other factors affect the liquid distribution inside the column, and this has been the subject of other studies. 5,[9][10][11][12][13][14] Experimental data on the effect of the operation parameters on the pressure drop, mass transfer efficiency, and distribution of the local flow parameters in a distillation column with a 0.9-m diameter and a regular aluminum Koch 1Y packing are shown in Pavlenko et al 12,13 It is shown by Nicolaiewsky et al 14 and Nicolaiewsky and Fair 15 that for the vertical plane sheets a decrease in surface tension and contact angle improves liquid spreading and surface wetting both for standard and corrugated sheets. The surface texture and roughness of a sheet also improve its wetting at the expense of contact angle reduction.…”

HETP Evaluation of Structured and Randomic Packing Distillation Column

“…The way wetted area is created, maintained and renewed, related to different surface geometry, has a remarkable effect not only on packing efficiency, but also on the performance of packed columns . Spiegel and Meier (2003) summarized in the Figure 3 the evolution of the structured packings, concluding that no better performance was achieved with various packings of similar geometry. In 1994, a new geometry was developed and called as Optiflow and, in 1999, an improved structure of corrugated sheet packings, the MellapackPlus was developed based on CFD simulations and experimental tests.…”

“…3. History of structured packings (Spiegel and Meier, 2003) According to Shi and Mersman (1985), the effective interfacial area includes not only films on the packing surface but also drops, jets and sprays which flow through the voids of the packed bed. In truth, wetted area can be divided into two parts: one occupied by the liquid film flowing over the surface of the packing and the other, the stagnant liquid.…”

Integrating a full carbon capture scheme onto a 450MWe NGCC electric power generation hub for offshore operations: Presenting the Sevan GTW concept

“…But, the drop appears to be less if the motion occurs harmoniously around the centre line of the column. 2 Ambient air/ seawater temperature assumed 15/7 o C (North Sea operations) 3 Using a generic amine (30% MEA) 4 This high availability results from the redundancy offered by eight gas turbines in parallel combined with the option of subjecting the gas turbines to a maintenance schedule including one spare engine, as the SGT-800 turbine may be hoisted by on-board cranes and brought to/from maintenance in on-shore workshops. 5 The largest swivel available on the market has a capacity of around 30 MWe.…”

“…Spiegel and Meier [2] conclude that still there is some potential for improvement of packing materials, while only slight improvements can be expected to liquid distributors. Yuan and Spiegel [3] investigated theoretically and experimentally the influence of maldistribution on the performance of Hoerner et al [4] investigated packed and tray columns exposed to motions, and performed pilot-scale experiments on a motion simulator at Det Norske Veritas (DNV).…”