{"id":763,"date":"2017-06-12T12:39:36","date_gmt":"2017-06-12T19:39:36","guid":{"rendered":"http:\/\/rccostello.com\/wordpress\/?p=763"},"modified":"2026-05-08T03:13:08","modified_gmt":"2026-05-08T10:13:08","slug":"fluxxion-metallic-membranes-absorption-stripping-distillation","status":"publish","type":"post","link":"https:\/\/www.rccostello.com\/wordpress\/distillation\/fluxxion-metallic-membranes-absorption-stripping-distillation\/","title":{"rendered":"Fluxxion Metallic Membranes for Absorption, Stripping & Distillation – Part 1"},"content":{"rendered":"

Fluxxion<\/a> Metallic Membranes can be used in place of packed columns.  They are usually placed in stacks and have no moving parts.   Industry needs new low energy separations with enhanced safety and increased flexibility.<\/p>\n

A membrane stack can have a 15 cm diameter and a thickness of 0.7 mm.  There would be 5 billion identical pores on each membrane with a diameter of 0.45 microns. An individual membrane might have a thickness of 1 micron.<\/p>\n

\"Fluxxion<\/a>
Fluxxion Metallic Membranes<\/figcaption><\/figure>\n

In the case of stripping a solvent from water with air, liquid flows counter current to the air on alternating layers.<\/p>\n

Stripping methyl tert-butyl ether (MTBE)<\/a> from water by nitrogen at ambient conditions was used as a test system for performance evaluation purposes. Inlet concentration of MTBE, different flow rates for liquid and gas were varied in a wide range. The best efficiency was achieved in all cases at lowest liquid flow rate, and tended to decrease progressively with increasing liquid flow rate, i.e. decreasing residence time.<\/p>\n

Gas flow rate exhibited practically no effect on separation, indicating that this system can also be considered as fully controlled by liquid side mass transfer resistance. Since the value of the overall liquid side based volumetric mass transfer coefficient was almost constant, the overall height of liquid side transfer unit (HTUoL) increased nearly proportionally and ranged 0.5-4 cm (!). The corresponding heights equivalent to a theoretical plate (HETP values) were 2 to 10 cm (!). These numbers indicate a high mass transfer efficiency, an order of magnitude above that experienced with common types and sizes of corrugated sheet structured packing in similar applications.<\/p>\n

Thin Liquid Film Diffusion is the Driving Force<\/strong><\/p>\n

The unique microsieve technology can provide:<\/p>\n