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| Number | Title | Issue Date |
| 8172987 | 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... | 05/08/2012 |
| 8080139 | Method of anhydrous ethanol production using circulation by multiple towers alternation The present invention relates to a method of anhydrous ethanol production using circulation by multiple towers' alternation, the procedure includes the steps of heating, adsorption, internal circulation, vacuum suction, washing and resolving etc. The method can prol... | 12/20/2011 |
| 8002953 | 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... | 08/23/2011 |
| 7867365 | Ethanol distillation with distillers soluble solids recovery apparatus The present invention relates to a system for producing ethanol from an organic source and that operates to purify and dry ethanol from a beer source. The system for producing substantially anhydrous ethanol comprises: (a) a first distillation stripping column; (b) ... | 01/11/2011 |
| 7744727 | Distillation method A method for distilling ethanol from a mash includes feeding a fluid to a first distillation column. The fluid and a distillate of the first distillation column are delivered to a second distillation column. The fed fluid and/or distillate of the second distillation... | 06/29/2010 |
| 7666282 | Process for providing ethanol The invention is a process for the purification of ethanol. In one embodiment the process includes boiling a degassed beer feed (106) in a pre-boiler (110) to provide a vapor by-pass fraction (112) that by-passes the conventional beer column and... | 02/23/2010 |
| 7572353 | Ethanol distillation process A process arrangement for distilling fuel grade ethanol include a distillation portion which distills beer to produce thin stillage and hot ethanol vapor. In an evaporation portion, a set of first effect evaporators which are heated either by plant steam or hot etha... | 08/11/2009 |
| 7291250 | Vacuum distillation system and use thereof for concentrating organic-aqueous solvent mixtures The present invention relates to a vacuum distillation plant and a process for concentrating organic aqueous solutions, especially spissum extracts, using said plant. The vacuum distillation plant of the invention comprises a flash evaporator, a means for vapor conc... | 11/06/2007 |
| 7257945 | Stripping ethanol from ethanol-blended fuels for use in NOSCR A method to use diesel fuel alchohol micro emulsions (E-diesel) to provide a source of reductant to lower NOx emissions using selective catalytic reduction. Ethanol is stripped from the micro emulsion and entered into the exhaust gasses upstream of the re... | 08/21/2007 |
| 7232878 | Polymer treatment for separating volatile material A process for the separation of volatile material from particulate polymer which has been substantially freed from unreacted monomer in an earlier separation step, comprising (a) feeding the particulate polymer to a purge vessel, optionally causing it to move throug... | 06/19/2007 |
| 7070694 | Purification of fluid compounds utilizing a distillation - membrane separation process Apparatus and processes are disclosed for economical separation of fluid mixtures. Broadly, apparatus of the invention is an integrated fractional distillation and perm-selective membrane separation apparatus. More particularly, the integrated apparatus comprises a ... | 07/04/2006 |
| 6964728 | Separation process Bisphenol-A-bis(neopentylglycolphosphate) products of enhanced properties and processes for preparing them are described. One of the processes includes (a) mixing and reacting neopentyl glycol and bisphenol-A-bis(dichlorophosphate) in an inert polar organic solvent ... | 11/15/2005 |
| 6755975 | Separation process using pervaporation and dephlegmation A process for treating liquids containing organic compounds and water. The process includes a pervaporation step in conjunction with a dephlegmation step to treat at least a portion of the permeate vapor from the pervaporation step. The process yields a membrane res... | 06/29/2004 |
| 6414205 | Process for the removal of MAPD from hydrocarbon streams A process for the selective hydrogenation of the methyl acetylene and propadiene (MAPD) in a propylene rich stream is disclosed wherein the selective hydrogenation is carried out stepwise (a) first in a single pass fixed bed reactor and then (b) in a dist... | 07/02/2002 |
| 6375807 | Separation of ethanol mixtures by extractive distillation A method of separating ethanol and ethyl acetate, and ethanol and water involves distilling a mixture of the components by an extractive distillation process in the presence of an extractive distillation solvent. The extractive distillation solvent may be... | 04/23/2002 |
| 6093845 | Ester co-production This invention relates to a process for the simultaneous co-production of ethyl acetate and n-butyl acetate. The process involves reacting a reaction mixture of ethanol, n-butanol and acetic acid in the liquid phase, in the presence of an acidic catalyst.... | 07/25/2000 |
| 5932182 | Reactor for high temperature, elevated pressure, corrosive reactions Reactor for containing high pressure, high temperature, corrosive reactions, especially supercritical water reactions. The reactor comprises an inner reactor vessel which houses the corrosive reaction, an outer containment vessel which contains a substant... | 08/03/1999 |
| 5800681 | Separation of ethanol, isopropanol and water mixtures by extractive distillation Ethanol, isopropanol and water cannot be separated from each other by distillation or rectification because of minimum azeotropes. They are readily separated by extractive distillation. Effective agents are: dimethylsulfoxide for ethanol, phenol for isopr... | 09/01/1998 |
| 5766895 | Method for production of ethyl alcohol The invention describes a method for the economic production of ethyl alcohol involving dehydration of the alcohol in an adsorption-desorption process using ion exchange resins which have been swollen in water from about 50 to 300 times their weight.... | 06/16/1998 |
| 5762765 | Separation of ethanol, isopropanol and water mixtures by azeotropic distillation Ethanol, isopropanol and water cannot be separated from each other by rectification because of the presence of minimum azeotropes. They are readily separated by azeotropic distillation. Effective agents are cyclopentane for ethanol from water, methyl acet... | 06/09/1998 |
| 5624534 | Volatiles separator and concentrator An apparatus and method for stripping volatiles from a feed stream and concentrating the volatiles in the overhead vapors forming a condensate product and simultaneously producing a low percent volatiles outlet stream as a concentrate product. The volatil... | 04/29/1997 |
| 5585527 | Continuous distillation and membrane process A process for separating a first component of a process stream from a second component of a process stream in a single vessel has been developed. The separation process uses an apparatus having a distillation zone to separate a first component from a seco... | 12/17/1996 |
| 5458739 | Volatiles separator and concentrator An apparatus and method for stripping volatiles from a feed stream and concentrating the volatiles in the overhead vapors forming a condensate product and simultaneously producing a low percent volatiles outlet stream as a concentrate product. The volatil... | 10/17/1995 |
| 5348624 | Process for separating ethyl tert-butyl ether and ethanol For separating ETBE and ethanol the following principal stages are employed: (1) Extraction of ethanol by water, the raffinate being ETBE saturated in water and the extract an ethanol/water mixture containing a small proportion of ETBE; (2) Concentration ... | 09/20/1994 |
| 5124004 | Distillation process for ethanol A method of distillation employing a heat pump (which may be driven by a compressor) using a vapor stream from within the distillation system as a heat source and a liquid stream from within the distillation system as a heat sink. The selection of heat-so... | 06/23/1992 |
| 5059327 | Cross-linked separation membrane and process for pervaporation A preparation membrane for pervaporation which comprises a crosslinked reaction mixture of a polyvinyl alcohol or polyvinyl alcohol copolymer and a polystyrene sulfonic acid or polystyrene sulfonic acid copolymer. A method for separating a mixture of wate... | 10/22/1991 |
| 5035776 | Low energy extractive distillation process for producing anhydrous ethanol A thermally-integrated extractive distillation process for recovering anhydrous ethanol from fermentation or synthetic feedstocks has a distillation train of four columns. Two columns are preconcentrators operated in parallel. The remaining columns are an... | 07/30/1991 |
| 4983303 | Method of separating a particular component from its liquid solution A novel method of separating a particular component from its liquid solution by the use of a vessel divided into a solution chamber receiving the liquid solution and a vacuum chamber by a permeable membrane having selective permeability. The method is cha... | 01/08/1991 |
| 4978430 | Method for dehydration and concentration of aqueous solution containing organic compound An improved method for dehydration and concentration of an aqueous solution containing an organic compound is disclosed. The solution is evaporated to produce a gaseous mixture comprising an organic compound vapor and a water vapor. The water vapor is sel... | 12/18/1990 |
| 4961826 | Distillation process for ethanol A method of distillation employing a heat pump (which may be driven by a compressor) using a vapor stream from within the distillation system as a heat source and a liquid stream from within the distillation system as a heat sink. The selection of heat-so... | 10/09/1990 |
| 4956052 | Process for separation using supercritical fluid A process for separation of components of a mixture of more than one organic substance or of a mixture of at least one organic substance and water by extraction using a supercritical fluid as an extractant. During the extraction an extraction aid having a... | 09/11/1990 |
| 4952503 | Process for the production of ethanol In the production of ethanol by continuous fermentation in a fermentor (4) with continuous stillage recirculation (19, 20) to the fermentor, the fermentation liquid (6) continuously withdrawn from the fermentor is first sieved in a straining step (7) for ... | 08/28/1990 |
| 4944881 | Liquid separation membrane for pervaporation A liquid separation membrane for pervaporation composed of a polymeric substance having in the main chain a glycosidic skeleton containing cationic groups and/or anionic groups at least some of which form a salt with counter anions and/or counter cations;... | 07/31/1990 |
| 4900402 | Pervaporation process of separating a liquid mixture A pervaporation process for separating at least one component from a mixture of liquids, for example for separating ethanol from a fermentation mass, by a series of three separation steps: separating the mixture by a first pervaporation to form a first pe... | 02/13/1990 |
| 4895989 | Process for producing alkali metal alcoholates A process is described for the production of alcoholates from alkali metal hydroxides and aliphatic alcohol which in their molecule contain 1 to 6 carbon atoms. The alcoholates are produced in that alkali metal hydroxide is mixed with an alcohol and is re... | 01/23/1990 |
| 4877533 | Separation of water from organic fluids Water is separated from a less hydrophilic fluid by contacting the mixture with one face of a membrane having an active layer which consists essentially only of polymers of an unsaturated organic acid with a ratio of carbon atoms to acid groups (not count... | 10/31/1989 |
| 4875980 | Method for separating and concentrating an organic component from an aqueous solution containing same Disclosed is a method for separating and concentrating an organic component having a lower boiling point than water from an aqueous solution containing the organic component which comprises the steps of (1) bringing an aqueous solution containing an organ... | 10/24/1989 |
| 4834841 | Method for treating baking oven stack gases The improved method and apparatus treats the stack gases from a commercial bakery oven to remove and recover pollutants, specifically ethyl alcohol. The method includes the steps of cooling the stack gases and passing the cooled gases through a packed col... | 05/30/1989 |
| 4784868 | Potable spirit production A method of producing a potable spirit comprises removing water from a fermented wash containing ethanol, water and congeners to produce a substantially water-free mixture of ethanol and congeners, and then fractionally distilling this water-free mixture ... | 11/15/1988 |
| 4769112 | Method for removing water from ethanol A method and apparatus for removing water from a liquid mixture of water and ethanol contacts it with liquid carbon dioxide so that the ethanol is preferentially transferred into solution, dries the solution using an adsorbent, and then recovers dry ethan... | 09/06/1988 |
