From 14-th to 17-th of September 2014, Friedrichshafen, Germany held the 10th International Conference on Distillation & Absorption 2014. Maleta cyclic distillation LLC (Tallin/EST) participated as sponsor, exhibitor and poster presentation. At the conference Maleta cyclic distillation LLC presented scientific achievements in processes intensification of mass transfer in distillation column through cyclic distillation. The key benefit of cyclic distillation technology is lower investment cost of your project: less column height; smaller column diameter; smaller square of the heat exchanger; less steel construction; consumes less space; improvement of product quality.
More over at exhibition was introduced pilot cyclic distillation column (cold stand) that has 5 distillation trays: two maleta distillation trays and three combined trays (maleta distillation tray + structured packing; maleta distillation tray+ pall ring; maleta tray + catalytic).
We demonstrated advantages of cyclic distillation technology in three cases:
1. First demonstration of cyclic pilot column was for show flexibility of the liquid flow from 5.9 to 29.4 m3/m2hr when factor Fs was constant about 1.9. We can modify the liquid flow in five times. The liquid flow resistance of the column does not depend on the liquid load, because amount of liquid on the tray remains unchanged. In cyclic pilot column we completely control of the fluid amount on the tray and its residence time.
2. Second demonstration of cyclic pilot column was for show flexibility of the vapor flow factor Fs from 1.6 to 3.6 when the liquid flow was constant 9 m3/m2hr. We can modify the vapor load in two times. The upper limit of vapor speed is limited by carryover.
3. Third demonstration was devoted to additional technological capabilities of cyclic distillation technology. It is possible to raise the efficiency of mass transfer due to the location of any type of packing between the trays and, as a result, we get the effect of bubble layer partitioning by height. The most efficient use of structured packing is achieved in a flooded condition and in emulsification mode. In this case, mass transfer area and volumetric mass transfer coefficient are increase up to 1.5…3 times. For cyclic distillation there is no fluid motion from tray to tray during vapor period. The increase in performance of the distillation column by minimizing the flow resistance in the cross-flow of liquid from the tray on a tray (single-phase fluid flow. Also we can place catalytic between maleta distillation trays. It has next technological advantages comparing to classical reactive distillation column: placement catalyst on trays in a boiling layer; ability to control the reaction time; high mass transfer efficiency.
During the exhibition Maleta cyclic distillation LLC informed about company service: pilot plant testing of separation process; basic and detail design; industrial automation and control solution; supplier of mass transfer equipment; reconstruction of the existing column; installation and commissioning work; staff training; project management.
In a poster presentation Maleta cyclic distillation LLC informed about industry implementation of tray dividing-wall columns (DN 1500/1700mm) in cyclic mode.