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| Number | Title | Issue Date |
| 5030775 | Process for preparing motor fuel grade alcohol A process for preparing motor fuel grade alcohol wherein an ethanol fermentation reactor effluent is distilled to produce an overhead product comprising 10 to about 40 mole percent ethanol and a bottom product comprising the non-alcoholic components. The ... | 07/09/1991 |
| 5028240 | Separation and concentration of lower alcohols from dilute aqueous solutions A process for producing, from a dilute aqueous solution of a lower (C1 -C5) alcohol, a concentrated liquid solution of the alcohol in an aromatic organic solvent is disclosed. Most of the water is removed from the dilute aqueous solu... | 07/02/1991 |
| 4889537 | Method for treating a fuel comprising a mixture of hydrocarbons and alcohols, and a selective water-adsorption product A method for treating a fuel comprising a mixture of hydrocarbon(s) and alcohol(s) with a content by volume of alcohol less than 10%, the method comprising placing the fuel mixture in contact with at least one cationic exchange resin capable of strong dis... | 12/26/1989 |
| 4692432 | Two cycle process for producing fuel-grade ethanol from dilute aqueous mixtures The beer is fed to a first solvent extraction column together with an organic solvent for alcohol which solvent is immiscible in water. The alcohol-organic solvent phase is extracted a second time, vacuum distilled or stripped, dried and again vacuum stri... | 09/08/1987 |
| 4568356 | Process for making anhydrous alcohol for mixing with gasoline to make gasohol motor fuel There is provided a process for making anhydrous alcohol denatured with gasoline for ready mixing with additional gasoline to make gasohol and in which aqueous alcohol is introduced into a dehydration drying column along with gasoline. The alcohol, contai... | 02/04/1986 |
| 4541897 | Distillation process for the production of dehydrated ethanol A distillation process for the production of dehydrated ethanol from dilute aqueous solutions of ethanol characterized in that the distillation is performed in a two-column system wherein the first column--for rectification--is operated under such a press... | 09/17/1985 |
| 4517298 | Process for producing fuel grade ethanol by continuous fermentation, solvent extraction and alcohol separation Alcohol substantially free of water is prepared by continuously fermenting a fermentable biomass feedstock in a fermentation unit, thereby forming an aqueous fermentation liquor containing alcohol and microorganisms. Continuously extracting a portion of a... | 05/14/1985 |
| 4490153 | Process for the production of gasohol Low energy process for the production of gasoline-ethanol blends, comprising dehydrating the aqueous ethanolic product from a conventional fermentation process, preferably containing about 6 wt. % ethanol, so as to generate an aqueous ethanolic effluent c... | 12/25/1984 |
| 4469903 | Process for the production of isopropyl alcohol A process is disclosed for the production of aliphatic alcohol by the direct hydration of an olefinic hydrocarbon. The process is directed to the production of isopropyl alcohol. The process includes the recovery of the alcohol from a water-rich hydration... | 09/04/1984 |
| 4465875 | Process for dehydrating ethanol Aqueous ethanol and other lower alkanol water mixtures may be dehydrated in the gas or liquid phase by using carbon molecular sieves. These sieves preferentially adsorb water and recovery of absolute ethanol or other absolute alkanol is achieved. Absolute... | 08/14/1984 |
| 4445908 | Extracting alcohols from aqueous solutions Hydrocarbon and surfactants are contacted with a solution of alcohol and water to extract the alcohol into the hydrocarbon-surfactant mixture.... | 05/01/1984 |
| 4441891 | Gasoline-aided production of alcohol and fuel Gasoline aids production of alcohol and fuel in a solvent extraction and recovery process. Alcohol/water mixtures, such as those produced by fermentation of biomass material, are separated by extraction of alcohol with a solvent especially suited to such ... | 04/10/1984 |
| 4428753 | Continuous extractive blending process A continuous process for blending isopropanol from an aqueous solution of isopropanol directly into a stream of gasoline blending hydrocarbon by mixing the aqueous solution and the gasoline, rapidly separating the resulting mixture into two phases, for ex... | 01/31/1984 |
| 4425137 | Alcohol and fuel production Alcohol/water mixtures, such as those produced by fermentation of biomass material, are separated by extraction of alcohol with a solvent, comprising a higher aliphatic alcohol in major amount and an aliphatic hydrocarbon in minor amount, especially suite... | 01/10/1984 |
| 4403999 | Process for producing oxygenated fuels A process for producing an oxygenated fuel composition comprising gasoline and isopropanol in which a dilute propylene feedstock is hydrated to produce isopropanol in a single pass, the unreacted olefins are oligomerized to produce gasoline blending stock... | 09/13/1983 |
| 4400241 | Extractive distillation process for the production of fuel grade alcohols A novel composition, and extraction process for the dehydration of a hydrated aliphatic, monohydric alcohol to produce a fuel grade alcohol. A select group of alkali-metal and alkaline-earth metal salts are added to and dissolved within a low volatility p... | 08/23/1983 |
| 4398922 | Extractive blending process A process for blending isopropanol from an aqueous solution of isopropanol directly into a stream of gasoline blending hydrocarbons which comprises mixing the aqueous solution with the gasoline blending hydrocarbons, allowing the mixture to separate into ... | 08/16/1983 |
| 4382001 | Use of activated carbon for separation of ethanol from water An adsorptive separation process for separating ethanol from a feed mixture comprising ethanol and water, which process comprises contacting the feed mixture with an adsorbent comprising activated carbon, selectively adsorbing substantially all of the eth... | 05/03/1983 |
| 4333740 | Process for the separation of water from ethanol An adsorptive separation process for separating water from a feed mixture comprising ethanol and water, which process comprises contacting the feed mixture with an adsorbent comprising corn meal, selectively adsorbing substantially all of the water to be ... | 06/08/1982 |
| 4306884 | Alcohol and fuel production Alcohol/water mixtures, such as those produced by fermentation of biomass material, are separated by extraction of alcohol with a solvent especially suited to such extraction and to subsequent removal. Conventional distillation steps to concentrate alcoho... | 12/22/1981 |
| 4297172 | Low energy process of producing gasoline-ethanol mixtures Gasoline-ethanol mixtures useable as motor fuel are produced by a relatively low energy process comprising interrelated distillation and extraction steps. In the first step, aqueous ethanol, such as an ethanol fermentation beer, is subjected to fractional... | 10/27/1981 |
| 4279620 | Novel process for treating gasahol A water-containing gasoline or gasahol is contacted with a substantially saturated aqueous solution of calcium chloride plus solid calcium chloride; and dry gasahol is recovered.... | 07/21/1981 |
