| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 568918000 | By plural liquid phase separation | 13 |
| 20090259078 | Methods For Recovery of Alcohols From Dilute Aqueous Alcohol Feed Streams - Methods for recovery of at least one alcohol from dilute aqueous alcohol feed streams are described. The methods include steps of a) providing a source of a dilute aqueous alcohol feed stream including at least one alcohol; b) substantially removing any solids from the dilute aqueous alcohol feed stream to form a feed stream substantially devoid of solids; c) circulating the feed stream substantially devoid of solids through a liquid-liquid extraction system having multiple equilibrium stages; d) recovering a raffinate phase substantially depleted in the at least one alcohol and an extract phase substantially enriched in the at least one alcohol; e) passing the extract phase to a recovery system wherein the extract phase is subjected to microwave radiation; f) recovering the volatilized product; and g) recycling the solvent to the liquid-liquid extraction system. The microwave radiation substantially heats the alcohol but not the solvent to form a volatilized product of substantially pure alcohol. The methods further include optional steps of removing any residual water from the substantially pure alcohol product to form a fuel-grade alcohol. The liquid-liquid extraction system can be a hydrophobic, microporous membrane extraction system having a plurality of hollow fibers. | 10-15-2009 |
| 20110071324 | Use of ionic liquids with tetracyanoborate anions as a solvents for extraction of alcohols from aqueous solutions - The invention relates to a method for the liquid-liquid extraction of alcohols from aqueous solutions using at least one ionic liquid containing a tetra-cyanoborate anion as solvent. | 03-24-2011 |
| 20110112337 | Use of ionic liquids containing tricyanomethide anions as solvents for the extraction of alcohols from aqueous solutions - The invention relates to a method for the liquid-liquid extraction of alcohols from aqueous solutions using at least one ionic liquid containing a tricyanomethide anion as solvent. | 05-12-2011 |
| 20110288345 | RECOVERY OF BUTANOL FROM A MIXTURE OF BUTANOL, WATER, AND AN ORGANIC EXTRACTANT - A process for recovering butanol from a mixture comprising a water-immiscible organic extractant, water, butanol, and optionally a non-condensable gas, is provided. The butanol is selected from 1-butanol, 2-butanol, isobutanol, and mixtures thereof. The extractant comprises at least one solvent selected from the group consisting of C | 11-24-2011 |
| 20130041187 | BUTANOL MANUFACTURING METHOD - Highly pure butanol can be produced by a method for producing butanol, the method comprising: Step A, wherein a butanol-containing solution is filtered through a nanofiltration membrane and a butanol-containing solution is recovered from the permeate side; Step B, wherein the butanol-containing solution obtained in Step A is passed through a reverse osmosis membrane and thereby concentrated to cause two-phase separation into a butanol phase and an aqueous phase; and Step C, wherein butanol is recovered from the butanol phase obtained in Step B. | 02-14-2013 |
| 20140066669 | ENERGY EFFICIENT METHOD AND APPARATUS FOR THE EXTRACTION OF LOWER ALCOHOLS FROM DILUTE AQUEOUS SOLUTION - The present invention relates to the energy efficient and selective extraction of dilute concentrations of C2-C6 alcohols from an aqueous solution using liquid phase dimethyl ether. | 03-06-2014 |
| 20140094630 | RECYCLABLE EXTRACTANT COMPOSITIONS - Provided herein are processes comprising providing a fermentation medium comprising a fermentable carbon source, a recombinant microorganism comprising an engineered butanol biosynthetic pathway, and butanol; contacting said fermentation medium with an extractant composition comprising an effective amount of antioxidant or antioxidant-like compound, whereby at least a portion of the butanol in the fermentation medium partitions into the extractant; recovering at least a portion of the butanol and extractant composition from the fermentation medium; recycling the extractant composition recovered in (c) one or more times in the fermentation medium; optionally adjusting the effective amount of antioxidant or antioxidant-like compound in the extractant composition, whereby the rate of oxidation or effect of oxidized products in the recycled extractant composition is substantially reduced and/or avoided such that the extractant composition may be recycled. | 04-03-2014 |
| 20150065758 | ETHANOL FERMENTATION METHODS AND SYSTEMS - Methods and systems for purifying feedstock-to-ethanol fermentation products are disclosed. The methods include the use of a solvent in the form of a supercritical fluid or liquid gas such as supercritical CO2 or liquid CO2 to dry fermentation beer solids, and/or to extract oil, ethanol, or ethanol and oil from fermentation beer or mixtures derived therefrom. Systems include a separations reactor having a first portion defined by walls that are impermeable to fermentation beer liquids joined to a second portion defined by walls that are impermeable to fermentation beer liquids by a third portion defined by walls that are permeable to fermentation beer liquids and impermeable to fermentation beer solids. | 03-05-2015 |
| 20150141711 | GRAPHENE OXIDE-BASED COMPOSITE MEMBRANES - Membranes are provided for energy efficient purification of alcohol by pervaporation. Such membranes include a nanofibrous scaffold in combination with a barrier layer. The barrier layer includes a graphene oxide. The membranes may, in embodiments, also include a substrate. | 05-21-2015 |
| 20150353455 | ETHANOL FERMENTATION METHODS AND SYSTEMS - Methods and systems for purifying feedstock-to-ethanol fermentation products are disclosed. The methods include the use of a solvent in the form of a supercritical fluid or liquid gas such as supercritical CO | 12-10-2015 |
| 20160107965 | PROCESS FOR THE SEPARATION OF ALCOHOLS - The invention provides a process for the recovery of a first alcohol from a stream comprising two or more alcohols, said process comprising the steps of providing a stream comprising two or more alcohols, providing a solvent stream, combining said stream comprising two or more alcohols with said solvent stream in the presence of water and recovering at least a portion of the first alcohol by liquid-liquid extraction. | 04-21-2016 |
| 568919000 | Alkali metal containing compound in one phase | 2 |
| 20120046504 | ALCOHOL FRACTIONATION - A process is provided for the recovery of alcohol from its aqueous solution by dissolving caustic in the solution to generate a phase separation. One layer contains the alcohol product and the other layer waste water. By recovering and recycling the caustic, a self-contained process is realized. | 02-23-2012 |
| 20130190539 | SYSTEM AND METHOD FOR SECONDARY USES OF GLYCOL AND WATER AFTER DEICING - A system and method for extracting the glycol from used or spent glycol mixtures, particularly aircraft deicing fluid, and simultaneously using the extracted water to hydrate brines, such as pavement deicing brines, are disclosed. The system provides comprehensive fluid handling and no discharge, as it re-concentrates glycol from spent aircraft deicing fluids. | 07-25-2013 |
