| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 568916000 | By dehydration | 16 |
| 20080207959 | ETHANOL PROCESSING WITH VAPOUR SEPARATION MEMBRANES - A process for separating vapours, for example for separating water from ethanol, uses a gas separation membrane unit. Permeate from the membrane unit is compressed and may be used for example as heating steam for distillation. The membrane unit may have two or more stages. Permeate from a stage may be condensed and used for example as fermentation make up water, compressed and fed to the permeate from an upstream stage or heating steam, or fed to another membrane stage for further dewatering. The gas separation membrane unit may be used to remove water from a fermentation broth that has been partially dewatered, for example by one or more of a distillation column or molecular sieve. | 08-28-2008 |
| 20080249339 | Charged Polymers for Ethanol Dehydration - The systems and methods described herein provide for modified lignins and other compositions that may be useful as entrainers. In embodiments, they may be useful for dehydrating ethanol so that it can be used as an energy source. | 10-09-2008 |
| 20090018372 | METHODS AND APPARATUS FOR PRODUCING ALCOHOLS FROM SYNGAS - Methods and apparatus for producing alcohols from syngas are disclosed herein. In some variations, syngas is catalytically converted to alcohols. The alcohols can be subjected to drying to produce an intermediate alcohol product, followed by distilling the intermediate product to produce a purified ethanol product for use in liquid fuels. | 01-15-2009 |
| 20090171129 | RECOVERY OF HIGHER ALCOHOLS FROM DILUTE AQUEOUS SOLUTIONS - This invention is directed to methods for recovery of C3-C6 alcohols from dilute aqueous solutions, such as fermentation broths. Such methods provide improved volumetric productivity for the fermentation and allows recovery of the alcohol. Such methods also allow for reduced energy use in the production and drying of spent fermentation broth due to increased effective concentration of the alcohol product by the simultaneous fermentation and recovery process which increases the quantity of alcohol produced and recovered per quantity of fermentation broth dried. Thus, the invention allows for production and recovery of C3-C6 alcohols at low capital and reduced operating costs. | 07-02-2009 |
| 20100004491 | Method Of Fuse Oil Decanting In An Ethanol Plant - An apparatus including an ethanol stream, wherein said ethanol stream contains greater than 5% of water; a dehydration means, wherein the water content of said ethanol stream is reduced to less than 5%; a desiccation means, wherein the water content of said ethanol stream is reduced to less than about 1%; a 200 proof receiver, wherein said 200 proof receiver comprises a sample port or a sensor to allow the percentage of water in the ethanol to be determined, and wherein said 200 proof receiver comprises an outlet; a heat exchanger to heat said ethanol stream with less than 1% water, and a mixing manifold downstream of said heat exchanger, wherein said heated ethanol stream with less than 1% water is combined with fusal oils from a fusal oil decanter is provided. | 01-07-2010 |
| 20110028767 | METHOD FOR PURIFYING FERMENTATION ALCOHOL - The present invention relates to a method for purifying an aqueous solution of fermentation alcohol to give anhydrous alcohol, wherein a mash column is controlled such a manner that an alcohol concentration of an alcohol/water mixed vapor distilled from a mash column is less than 50% by weight and a reflux amount of a condensate to a distillation column is controlled such a manner that an alcohol concentration of an alcohol/water mixed vapor that is distilled from the distillation column is 55 to 85% by weight. According to the present method, the purification for obtaining an anhydrous alcohol from an aqueous solution of a fermentation alcohol with the use of a mash column, a pressurized distillation column and a membrane separator can be more conveniently carried out with an extremely high energy efficiency as the whole process. | 02-03-2011 |
| 20110152584 | Method and Apparatus for Dewatering a Mixture of Ethanol and Water - The invention relates to a method and an apparatus for dewatering mixture of ethanol and water. The method comprises steps for feeding mixture of ethanol and water ( | 06-23-2011 |
| 20110313213 | PURIFICATION OF ALCOHOLS PRIOR TO THEIR USE IN THE PRESENCE OF AN ACID CATALYST - Process for the purification of an alcohol in the course of a process comprising:
| 12-22-2011 |
| 20110319673 | ZEOLITE CONTAINING WASH COATS FOR ADSORBER HEAT EXCHANGERS AND TEMPERATURE CONTROLLED ADSORBERS - The present invention provides a process for applying a coating on a heat exchanger or a temperature controlled adsorber surface. This coating comprises a zeolite, an organic solvent, an organic siloxane resin that constitutes a binder and a plasticizing agent. | 12-29-2011 |
| 20120190900 | MOLECULAR SIEVE ADSORBENT BLENDS AND USES THEREOF - A process for the production and use of a molecular sieve blend with improved performance characteristics produced by preparing or obtaining a hydrophilic zeolite, particularly a hydrophilic zeolite 3A with a low SiO | 07-26-2012 |
| 20130225880 | ADSORPTION PROCESS FOR THE DEHYDRATION OF ALCOHOL - The present invention includes a process for the dehydration of ethanol by adsorption of water at elevated pressure and for the regeneration (purging) of adsorbent at a lower pressure than the pressure used for the adsorption of water where the ratio of the duration of the regeneration (purge) step to the duration of the water adsorption step is higher than 0.1 and the temperature of adsorption is greater than 260 degree Fahrenheit. | 08-29-2013 |
| 20130345479 | ALCOHOL CONCENTRATION METHOD - The present invention relates to an alcohol concentration method which comprises sealing in an alcohol aqueous solution by a laminate formed by extrusion lamination of polyethylene terephthalate onto at least one surface of an air permeable film-shaped substrate; and storing the alcohol aqueous solution in the laminate for a predetermined period of time, whereby the alcohol in the alcohol aqueous solution can be concentrated easily and conveniently. | 12-26-2013 |
| 20140051895 | DEHYDRATION METHOD - The present invention includes a dehydration method comprising the steps of providing a distilled process-target fluid to a water separation membrane device via a heat exchanger; separating the process-target fluid into a dehydrated product and water by using the water separation membrane device; detecting a temperature of any one of the water separation membrane device and the process-target fluid supplied to the water separation membrane device by using a temperature monitoring device; and controlling the temperature of the process-target fluid so that the temperature of the distilled process-target fluid being maintained at a temperature higher than the condensation temperature of the distillate by 5 to 10° C. by using a temperature adjustment device provided in the water separation membrane device. | 02-20-2014 |
| 20140163264 | METHOD AND APPARATUS FOR PURIFYING ALCOHOL - A method of purifying an alcohol, such as isopropyl alcohol, includes a first ion exchange step of performing ion exchange treatment on an alcohol-containing liquid; a step of performing dehydration treatment using a dehydration membrane on the liquid treated in the first ion exchange step; a distillation step of performing distillation on the dehydration-treated liquid; and a second ion exchange step of further performing ion exchange treatment on the liquid obtained in the distillation step to obtain a purified alcohol. | 06-12-2014 |
| 20150080616 | POLYMERIC NANOFIBROUS COMPOSITE MEMBRANES FOR ENERGY EFFICIENT ETHANOL DEHYDRATION - Membranes are provided for energy efficient purification of alcohol by pervaporation. Such membranes include a nanofibrous scaffold in combination with a barrier layer. The membranes also include zeolites in the barrier layer. The membranes may, in embodiments, also include a substrate. | 03-19-2015 |
| 20160200649 | METHOD FOR PURIFYING ISOPROPYL ALCOHOL | 07-14-2016 |
