Distillation: processes, separatory inventions 01/09

20090026062 - Separation of chlorosilanes: Crude chlorosilane streams containing lower-boiling chlorosilanes and higher-boiling chlorosilanes are separated by contacting them with a distillation aid. The lower-boiling chlorosilanes are separated from the crude chlorosilane stream, and then the distillation aid and the higher-boiling chlorosilanes are separated from one another. The distillation aid is a mono-cyano-substituted organic compound,... Agent: Dow Corning Corporation Co1232

20090020407 - Method for producing pure xylylenediamine (xda): A process comprising: continuously distilling a crude xylylenediamine in a column to form a pure xylylenediamine and a bottom product, wherein the column comprises a distillation column having a side draw and the distillation column is operated under a reduced pressure and a bottom temperature of 185° C. or less;... Agent: Connolly Bove Lodge & Hutz, LLP

20090014312 - Low energy vacuum distillation method and apparatus: A sub-atmospheric pressure desalinating still employs a closed top, open bottom pipe filled with source water to be distilled, such as seawater, having a height greater than the height of a column of seawater that can be supported by the pressure at the bottom of the tank so that a... Agent: Gifford, Krass, Sprinkle,anderson & Citkowski, P.c

20090014313 - Low-energy extractive distillation process for dehydration of aqueous ethanol: An energy-efficient extractive distillation process for producing anhydrous ethanol from aqueous/ethanol feeds containing any range of ethanol employs an extractive distillation column (EDC) that operates under no or greatly reduced liquid reflux conditions. The EDC can be incorporated into an integrated process for producing anhydrous ethanol used for gasoline blending... Agent: Charles H Jew

20090008235 - Membrane-based hybrid process for separation of mixtures of organics, solids, and water: A system and process that are a hybrid of distillation and membrane separations offers a highly efficient means of separating a fluid feed mixture into organic, solid, and aqueous components. The distillation section is followed by two membrane separation sections operated in parallel, with the distillation section separating the feed... Agent: Townsend And Townsend And Crew, LLP

20090008236 - Process for recovering brominated butadiene polymers from solution: Brominated polybutadiene polymers are recovered from a bromination reaction solution by forming the solution into droplets, thermally stripping the solvent from the droplets, and then washing the resulting particles. The washed particles are then recovered from the washing liquid. The droplets can be dispersed into a gaseous medium such as... Agent: The Dow Chemical Company Gary C. Cohn

20090000939 - Membrane distillation process and membrane distillation device: In a membrane distillation process in which a liquid to be concentrated is separated from a vapour space (11) by a vapour-permeable liquid- or water-tight membrane or membrane wall (13), to set the absolute pressure of the liquid to be concentrated a reduced pressure is imparted to this which lowers... Agent: Hunton & Williams/new York Intellectual Property Dept.

20090000940 - Method and apparatus for oil and/or oil product treatment: A method of oil and/or oil product treatment is carried out by producing a physico-mechanical effect on a moving flow of oil and/or oil products by changing pressure along the flow, wherein the pressure of at least 0.35 MPa being created at the flow inlet, which is subsequently reduced to... Agent: Bachman & Lapointe, P.C.