Entries |
Document | Title | Date |
20090048471 | Production Process of 1,6-Hexanediol - A method is provided for obtaining highly pure 1,6-hexanediol in which the contents of impurities such as 1,4-cyclohexanediol, 1,5-hexanediol, 1,2-cyclohexanediol, 1,7-pentanediol, 1,5-pentanediol and high boiling point components are significantly reduced. | 02-19-2009 |
20090118551 | Integrated Separation and Preparation Process - Integrated separation and preparation process comprising a gas separation process wherein a first component is separated from a mixture of components by diffusion of the first component through a porous partition into a stream of sweeping component; and a preparation process wherein the sweeping component is used as feed. Separation unit and device for use in such a process and industrial set-up for use in such a process. | 05-07-2009 |
20110275863 | PROCESSES FOR MAXIMIZING ETHANOL FORMATION IN THE HYDROGENATION OF ACETIC ACID - In one embodiment, the invention is to a process for purifying a crude ethanol product. The process comprises the step of hydrogenating acetic acid in a reactor in the presence of a catalyst to form the crude ethanol product. The process further comprises the step of separating at least a portion of the crude ethanol product in a purification zone. The purification zone preferably comprises a first column, which yields a first distillate comprising ethanol, water and ethyl acetate, and a first residue comprising acetic acid. The at least a portion of the crude ethanol product has a residence time from the reactor to the purification zone from 5 minutes to 5 days. | 11-10-2011 |
20120010436 | Separation of Vapor Crude Alcohol Product - Recovery of alcohol, in particular ethanol, by separating a vapor crude alcohol product obtained from the hydrogenation of acetic acid using a low energy process. The vapor crude ethanol product is separated in a column to produce a distillate stream comprising ethanol and at least one non-condensable gas. The vapor crude ethanol product may pass through a membrane before the first distillation column to separate the at least one non-condensable gas from the ethanol. The ethanol product is subsequently recovered from the distillate stream. | 01-12-2012 |
20120010437 | Liquid Esterification For The Production Of Alcohols - Purifying and/or recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid. Separation and purification processes of crude ethanol mixture are employed to allow recovery of ethanol and remove impurities. In addition, the process involves returning acetaldehyde separated from the crude ethanol product to the reactor. | 01-12-2012 |
20120010438 | Reduced Energy Alcohol Separation Process - Recovery of alcohols, in particular ethanol, from a crude ethanol product obtained from the hydrogenation of acetic acid using a reduced energy process. The crude ethanol product may be fed to a distillation column in which a substantial portion of the water is removed with the acetic acid in the residue. The ethanol product is obtained from the distillate. | 01-12-2012 |
20120010439 | PROCESS FOR RECOVERING ALCOHOL PRODUCED BY HYDROGENATING AN ACETIC ACID FEED STREAM COMPRISING WATER - Purifying and/or recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid from an feed stream comprising water. The presence of water does not significantly impact acid conversion or selectivity to ethanol. Further the addition of water allows for improved recovery of ethanol. | 01-12-2012 |
20120010440 | Separating Ethanol and Ethyl Acetate Under Low Pressure Conditions - A crude ethanol product obtained from the hydrogenation of acetic acid comprises ethanol and ethyl acetate. Using a distillation column operated at a pressure of from 0.1 to 100 kPa, the ethyl acetate and ethanol may be effectively separated. In addition, maintaining the amount of water that is fed to the distillation column to an amount less than 10 wt. %, based on the weight of all components fed to the distillation column, provides an energy benefit. | 01-12-2012 |
20120245395 | Reduced Energy Alcohol Separation Process Having Water Removal - The present invention relates to the recovery of alcohols, in particular ethanol, from a crude ethanol product obtained from the hydrogenation of acetic acid using a reduced energy process. The crude ethanol product may be fed to a distillation column in which a substantial portion of the water is removed with the acetic acid in the residue. Additional water may be removed by using a pressure swing adsorption unit, molecular sieve, and/or membrane. Ethanol extraction may also be used to reduce the ethanol concentration in the recycle streams. | 09-27-2012 |
20120253084 | VENT SCRUBBERS FOR USE IN PRODUCTION OF ETHANOL - A process for producing ethanol comprising the steps of hydrogenating an acetic acid feed stream to form a crude ethanol product and separating at least a portion of the crude ethanol product to form an ethanol stream and at least one vent stream. The vent stream comprises non-condensable gases at least one volatile organic. The process further comprises the step of scrubbing the vent stream with at least two different solvents to recover the volatile organics. The vent stream may also comprise entrained ethanol, which may also be recovered. | 10-04-2012 |
20120277480 | Separation Process Having an Alcohol Sidestream - Recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid. The crude ethanol product is fed to a distillation column to yield an ethanol sidestream. | 11-01-2012 |
20120277481 | INTEGRATED PROCESS FOR PRODUCING ACETIC ACID AND ALCOHOL - The present invention relates generally to processes for producing ethanol and acetic acid and, in particular, to a process for integrating an ethanol production process with an acetic acid production process. | 11-01-2012 |
20120277482 | Removing Water from an Acetic Acid Stream in the Production of Alcohols - A process for removing water from an acetic acid stream in the production of alcohols, such as ethanol produced by hydrogenating acetic acid. Water is removed from the acetic acid stream using an adsorption unit, membrane, molecular sieves, or a combination thereof, to form a return stream. The return stream may be recycled to the hydrogenation reactor. | 11-01-2012 |
20120277483 | Water Control In Alcohol Production From Hydrogenation - Recovery of alcohol, in particular ethanol, from a crude product obtained from the hydrogenation of a feed stream comprising a carbonylation stock selected from the group consisting of acetic acid, and acetic acid and an ester thereof. The hydrogenation reaction produces a reactor product that is dehydrated to produce a dried product stream that comprises less water than the feed stream. This controls the additional water fed to the hydrogenation unit. | 11-01-2012 |
20120277484 | Using A Dilute Acid Stream As An Extractive Agent - Recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid using an extractive distillation column. A diluted acid stream, comprising less than 30 wt. % acetic acid, is used as the extractive agent and is fed at a point above the crude feed stream. The column yields a residue that comprises ethanol, acetic acid, and water. The diluted acid stream may be separated from the residue and returned to the extractive distillation column. | 11-01-2012 |
20120323049 | Distillation of Crude Alcohol Product Using Entrainer - Recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid using a low energy process and an entrainer. The crude ethanol product is separated in an distillation column to produce a distillate stream comprising the entrainer. The ethanol product is recovered from the residue stream. | 12-20-2012 |
20120323050 | Extractive Distillation of Crude Alcohol Product - Recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid using an extractive distillation column. The column yields a residue that comprises ethanol, acetic acid, and the extractive agent. The extractive agent may be water and may be separated from the residue and returned to the extractive distillation column. | 12-20-2012 |
20130131393 | Esterification Process Using Extractive Separation To Produce Feed For Hydrogenolysis - Disclosed herein are processes for alcohol production by reducing an esterification product, such as ethyl acetate. The processes comprise esterifying acetic acid and an alcohol such as ethanol to produce an esterification product. The esterification product may be recovered using an extractive separation. The esterification product is reduced with hydrogen in the presence of a catalyst to obtain a crude reaction mixture comprising the alcohol, in particular ethanol, which may be separated from the crude reaction mixture. | 05-23-2013 |
20130131394 | Integrated Esterification and Hydrogenolysis Process For Producing Ethanol - Disclosed herein are processes for alcohol production by reducing an esterification product, such as ethyl acetate. The processes comprise esterifying acetic acid and an alcohol such as ethanol to produce an esterification product. The esterification product is reduced with hydrogen in the presence of a catalyst to obtain a crude reaction mixture comprising the alcohol, in particular ethanol, which may be separated from the crude reaction mixture. The crude reaction mixture may be further purified to recover ethanol. | 05-23-2013 |
20130131395 | Continuous Ethyl Acetate Production and Hydrogenolysis Thereof - Disclosed herein are processes for alcohol production by reducing an esterification product, such as ethyl acetate. The processes comprise esterifying acetic acid and an alcohol such as ethanol to produce an esterification product. The esterification product is reduced with hydrogen in the presence of a catalyst to obtain a crude reaction mixture comprising the alcohol, in particular ethanol, which may be separated from the crude reaction mixture. Ethyl acetate from the crude reaction mixture may be recovered as returned to assist in recovering the esterification product. | 05-23-2013 |
20130137903 | INTEGRATED PROCESS FOR PRODUCING POLYVINYL ALCOHOL OR A COPOLYMER THEREOF AND ETHANOL - Ethanol is produced from acetic acid or acetic anhydride or a mixture of acetic acid and acetic anhydride by a hydrogenation reaction. The acetic acid or acetic anhydride or a mixture of acetic acid and acetic anhydride is produced from methyl acetate by a carbonylation reaction. The methyl acetate is produced as a byproduct during the conversion of a vinyl acetate polymer or copolymer to a polymer or copolymer of vinyl alcohol. By integrating processes as described herein, a valuable product, i.e. ethanol, is produced from a methyl acetate byproduct. | 05-30-2013 |
20130144087 | CO-GASIFICATION OF AQUATIC BIOMASS AND COAL - The invention also relates to co-gasification processes for forming syngas from aquatic biomass and a fossil fuel. In one aspect, the invention is to a process for producing syngas, comprising: introducing aquatic biomass, a fossil fuel, water and oxygen to a gasifier and forming syngas comprising hydrogen, carbon monoxide and carbon dioxide; and feeding aquatic biomass with carbon dioxide derived from the syngas. In other aspects, the invention relates to integrated processes for producing industrial chemicals, such as alcohols, carboxylic acids, esters, aldehydes, olefins and polymers from such syngas. | 06-06-2013 |
20130172630 | PRESSURE DRIVEN DISTILLATION FOR ETHANOL PRODUCTION AND RECOVERY FROM HYDROGENATION PROCESS - Recovery of alcohols, in particular ethanol, from a crude ethanol product obtained from the hydrogenation of acetic acid using pressure driven distillation to separate the crude ethanol product. The crude ethanol product may be fed to a distillations column in which a substantial portion of the water is removed with the acetic acid in the residue. A second column is at higher pressure than a first column. | 07-04-2013 |
20130172631 | Process for Monitoring Separation of Ethanol Mixture - A process is disclosed for monitoring separation streams of an ethanol purification process, including measuring the concentrations of impurities, monitoring one or more binary streams, or monitoring conductivity in an ethanol containing stream to determine acetic acid concentrations. The ethanol is produced by hydrogenating acetic acid. One or more on-line analyzers may be used to monitor the separation streams. | 07-04-2013 |
20130245331 | Separation Process Having An Alcohol Sidestream - Recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid. The crude ethanol product is fed to a distillation column to yield an ethanol sidestream. | 09-19-2013 |
20140275640 | SINGLE PHASE ESTER FEED FOR HYDROGENOLYSIS - The process involves esterifying ethanol and acetic acid to produce an esterification product that is in a single phase that is directly reduced, by hydrogenolysis, to produce ethanol. The single phase is not capable of separating. Feeding a single phase feed stream reduces the separation of the esterification product. Hydrogen may be fed to the esterification reactor that operates at a high pressure that is substantially similar to or greater than the hydrogenolysis reactor. | 09-18-2014 |
20140303407 | Extractive Distillation of Crude Alcohol Product - Recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid using an extractive distillation column. The column yields a residue that comprises ethanol, acetic acid, and the extractive agent. The extractive agent may be water and may be separated from the residue and returned to the extractive distillation column. | 10-09-2014 |
20150133700 | Process for Producing Ethanol by Hydrogenation with Carbon Monoxide Controls - A process for produce ethanol by hydrogenation acetic acid and/or esters thereof is disclosed. The process involves reacting hydrogen feed stream with an acetic acid feed stream in a reactor operated in the presence of a catalyst to form an ethanol mixture and monitoring carbon monoxide concentration of the fresh hydrogen feed stream and adjusting temperature in the reactor in response to the carbon monoxide concentration of the fresh hydrogen feed stream. | 05-14-2015 |