Patent application number | Description | Published |
20130046113 | PROCESS FOR PURIFYING ETHANOL - 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. | 02-21-2013 |
20130053605 | Process for Recovering Ethanol - Recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid. Separation and purification processes of the crude ethanol products are employed to allow recovery of ethanol and remove impurities. | 02-28-2013 |
20130053606 | Process for Producing Ethanol Using An Extractive Distillation Column - Recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid. Separation and purification processes of crude ethanol product are employed to allow recovery of ethanol and remove impurities. In addition, the process involves separating the crude ethanol product using an extractive distillation column that employs an extraction agent, such as a recycled stream comprising water. | 02-28-2013 |
20130072728 | Process for Vapor Phase Hydrogenation - A process for selective formation of ethanol from acetic acid includes contacting a feed stream containing acetic acid and hydrogen at an elevated temperature with catalyst comprising platinum and tin on a high surface area silica promoted with calcium metasilicate. Selectivities to ethanol of over 85% are achieved at 280° C. with catalyst life in the hundreds of hours. | 03-21-2013 |
20130131400 | Hydrogenating Acetic Acid to Produce Ethyl Acetate and Reducing Ethyl Acetate to Ethanol - Disclosed herein are processes for alcohol production by reducing an ethyl acetate produced by hydrogenating acetic acid in the presence of a suitable catalyst. The ethyl acetate 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. Thus, ethanol may be produced from acetic acid through an ethyl acetate intermediate without an esterification step. This may reduce the recycle of ethanol in the hydrogenolysis process and improve ethanol productivity. | 05-23-2013 |
20130158297 | ESTERIFYING AN ETHANOL AND ACETIC ACID MIXTURE TO PRODUCE AN ESTER FEED FOR HYDROGENOLYSIS - Disclosed herein are processes for alcohol production by hydrogenating acetic acid to obtain a mixture of ethanol and acetic acid, esterifying the mixture to produce an esterification product and reducing the esterification product. The mixture may provide a sufficient amount of ethanol and acetic acid for esterification and reduces the need for additional acetic acid and/or ethanol. This may reduce the recycle of ethanol in the hydrogenolysis process and improve ethanol productivity. | 06-20-2013 |
20130158300 | Process For Producing Ethanol By Hydrogenating Mixed Feeds Comprising Water - The processes of the current invention relate to the production of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid and ethyl acetate. Conversion of ethyl acetate may be improved by controlling the water content that may be fed to the vaporizer to form a feed stream that may be fed to the hydrogenation reactor. At least 0.01 wt. % water is fed to the vaporizer. The crude ethanol product is separated two or more columns to yield an ethanol product. | 06-20-2013 |
20130158301 | Multiple Vapor Feeds for Hydrogenation Process to Produce Alcohol - The present invention relates to processes for the recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid. The crude ethanol product is separated in a column to produce a distillate stream comprising ethyl acetate, ethanol and acetaldehyde and a residue stream comprising ethanol, acetic acid and water. The ethanol product is recovered from the residue stream. A liquid recycle stream is sent to a second vaporizer to form a second vapor feed stream that is fed to the hydrogenation reactor. | 06-20-2013 |
20130158302 | Phasing Reactor Product from Hydrogenating Acetic Acid Into Ethyl Acetate Feed to Produce Ethanol - Disclosed herein are processes for alcohol production by reducing ethyl acetate produced by hydrogenating acetic acid in the presence of a suitable catalyst. The product of the acetic acid hydrogenation is fed directly to a decanter to separate the hydrogenation product into an aqueous phase comprising water and ethanol and an organic phase comprising ethyl acetate. The organic phase 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. Thus, ethanol may be produced from acetic acid through an ethyl acetate intermediate without an esterification step. This may reduce the recycle of ethanol in the hydrogenolysis process and improve ethanol productivity. | 06-20-2013 |
20130165700 | Catalysts Comprising Secondary Noble Metals and Process for Producing Ethanol - The present invention relates to a catalyst comprising platinum, tin and a secondary noble metal selected from the group consisting of rhodium, palladium, gold and iridium. The catalyst may be on a support. In some embodiments, the support may comprise calcium. The catalyst is used for converting acetic acid to ethanol. | 06-27-2013 |
20130165701 | Catalysts Having Promoter Metals and Process for Producing Ethanol - The present invention relates to a catalyst. The catalyst is used for converting acetic acid to ethanol. The catalyst comprises platinum, tin, a base metal selected from calcium and/or tungsten and a promoter metal selected from barium, potassium and/or cesium. | 06-27-2013 |
20130165704 | PROCESS FOR PRODUCING ETHANOL IN A REACTOR HAVING A CONSTANT TEMPERATURE - The present invention, in one embodiment, relates to a process for producing ethanol. The process comprises the step of reacting acetic acid and hydrogen in a shell and tube reactor and in the presence of a catalyst under conditions effective to form a crude ethanol product. The crude ethanol product comprises ethanol, acetic acid, ethyl acetate, and water. The process further comprises the step of recovering ethanol from the crude ethanol product. The shell and tube reactor comprises one or more tubes, each containing a heat transfer medium, and a shell comprising the catalyst. Preferably, the shell and tube reactor has an inlet temperature and an outlet temperature and the inlet temperature is substantially similar to or less than the outlet temperature. | 06-27-2013 |
20130172632 | Process for Promoting Catalyst Activity for Ethyl Acetate Conversion - The process of the current invention relates to the production of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid and ethyl acetate in the presence of a catalyst. Conversion of ethyl acetate may be improved by adding water to the reactor. At least 0.01 wt. % water may be added to the reactor. The crude ethanol product is separated in one or more columns to yield an ethanol product. | 07-04-2013 |
20130178661 | Hydrogenation Catalysts with Cobalt-Modified Supports - The present invention relates to catalysts, to processes for making catalysts and to chemical processes employing such catalysts. The catalysts are preferably used for converting acetic acid to ethanol. The catalyst comprises a precious metal and one or more active metals on a modified support that comprises cobalt. | 07-11-2013 |
20130178663 | COBALT-CONTAINING HYDROGENATION CATALYSTS AND PROCESSES FOR MAKING SAME - The present invention relates to catalysts, to processes for making catalysts and to chemical processes employing such catalysts. The catalysts are preferably used for converting acetic acid to ethanol. The catalyst comprises cobalt, precious metal and one or more active metals on a modified support. | 07-11-2013 |
20130178664 | Hydrogenation Catalysts - The present invention relates to catalysts, to processes for making catalysts and to chemical processes employing such catalysts. The catalysts are preferably used for converting acetic acid to ethanol. The catalyst comprises a precious metal and one or more active metals on a modified support. The modified support may comprise cobalt tungstate. | 07-11-2013 |
20130178667 | Processes for Making Catalysts - The present invention relates to catalysts, to processes for making catalysts and to chemical processes employing such catalysts. The catalysts are preferably used for converting acetic acid to ethanol. The catalyst comprises a precious metal and one or more active metals on a support, optionally a modified support. | 07-11-2013 |
20130178668 | Multifunctional Hydrogenation Catalysts - The present invention relates to catalysts, to processes for making catalysts and to chemical processes employing such catalysts. The multifunctional catalysts are preferably used for converting acetic acid and ethyl acetate to ethanol. The catalyst is effective for providing an acetic acid conversion greater than 20% and an ethyl acetate conversion greater than 0%. The catalyst comprises a precious metal and one or more active metals on a modified support. The modified support includes a metal selected from the group consisting of tungsten, vanadium, and tantalum, provided that the modified support does not contain phosphorous. | 07-11-2013 |
20130199084 | Ethanol Compositions - In one embodiment, the present invention is to an ethanol composition comprising at least 92 wt. % ethanol and from 95 wppm to 1,000 wppm isopropanol. | 08-08-2013 |
20130224102 | PROCESS FOR UTILIZING A WATER STREAM IN A HYDROLYSIS REACTION TO FORM ETHANOL - In one embodiment, the invention is to a process for producing a water stream comprising the steps of hydrogenating acetic acid to form a crude ethanol product and separating at least a portion of the crude ethanol product in at least one column of a plurality of columns into a distillate comprising ethanol and a residue comprising the water stream. The water stream preferably is essentially free of organic impurities other than acetic acid and ethanol. | 08-29-2013 |
20130231510 | Processes for Making Ethanol From Acetic Acid - A process for selective formation of ethanol from acetic acid by hydrogenating acetic acid in the presence of first metal, a silicaceous support, and at least one support modifier. Preferably, the first metal is selected from the group consisting of copper, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum, titanium, zinc, chromium, rhenium, molybdenum, and tungsten. In addition the catalyst may comprise a second metal preferably selected from the group consisting of copper, molybdenum, tin, chromium, iron, cobalt, vanadium, tungsten, palladium, platinum, lanthanum, cerium, manganese, ruthenium, rhenium, gold, and nickel. | 09-05-2013 |
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 |
20130331619 | Processes for Producing Anhydrous Ethanol Compositions - The present invention is to a process for producing a anhydrous ethanol composition comprising hydrogenating acetic acid in the presence of a catalyst to form a crude ethanol product; separating in a first column at least a portion of the crude ethanol product into a first distillate comprising ethanol, water and ethyl acetate, and a first residue comprising acetic acid; separating in a second column at least a portion of the first distillate into a second distillate comprising ethyl acetate and a second residue comprising ethanol and water; separating in a third column at least a portion of the second residue into a third distillate comprising ethanol and residual water and a third residue comprising separated water; and dehydrating at least a portion of the third distillate to form the anhydrous ethanol composition. The anhydrous ethanol composition, as formed, comprises less than 1 wt. % water. | 12-12-2013 |
20130345478 | Process for Making Ethanol from Acetic Acid Using Acidic Catalysts - A process for selective formation of ethanol from acetic acid by hydrogenating acetic acid in the presence of a catalyst comprises a first metal on an acidic support. The acidic support may comprise an acidic support material or may comprise an support having an acidic support modifier. The catalyst may be used alone to produced ethanol via hydrogenation or in combination with another catalyst. In addition, the crude ethanol product is separated to obtain ethanol. | 12-26-2013 |
20140046100 | 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. | 02-13-2014 |
20140051894 | Silica Enhanced Support for Hydrogenation Catalysts and Processes for Producing Ethanol - The present invention relates to a catalyst. The catalyst is used for converting acetic acid to ethanol. The catalyst comprises one or more active metals on an alkali metal silicate support or on an alkaline earth metal silicate support, wherein the support further comprises a silica enhancer and a support modifier. | 02-20-2014 |
20140058139 | Process for Heat Integration for Ethanol Production and Purification Process - Ethanol production from the hydrogenation of acetic acid requires energy to drive the hydrogenation reaction and the purification of the crude ethanol product. Heat integration process to recover heat from one part of the production process to be used within the process improves efficiencies and reduces costs. | 02-27-2014 |
20140094629 | Process for Recovering Ethanol with Sidedraws to Regulate C3+ Alcohols Concentrations - Purification and/or recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid. Separation and purification processes of a crude ethanol mixture are employed to allow recovery of ethanol and remove impurities. In particular, the process involves one or more sidedraws to regulate C | 04-03-2014 |
20140121421 | Hydrogenation Reaction Conditions To Produce Ethanol and Reduce Ethyl Acetate Formation - The present invention is directed to processes for selective formation of ethanol from acetic acid by hydrogenating acetic acid in the presence of a hydrogenation catalyst, wherein the temperature and liquid hourly space velocity (LHSV) are controlled to maximize acetic acid conversion and to minimize selectivity to ethyl acetate. The hydrogenation catalyst comprises a metal selected from the group consisting of platinum, palladium, gold, iridium, osmium, and rhodium on a support modified by at least one support modifier selected from the group consisting of (i) alkaline earth metal oxides, (ii) alkali metal oxides, (iii) alkaline earth metal metasilicates, (iv) alkali metal metasilicates, (v) Group IIB metal oxides, (vi) Group IIB metal metasilicates, (vii) Group IIIB metal oxides, (viii) Group IIIB metal metasilicates, and mixtures thereof. | 05-01-2014 |
20140121422 | Hydrogenation Reaction Conditions For Producing Ethanol - The present invention relates to processes for producing ethanol from a feed stream comprising hydrogen and acetic acid and/or ethyl acetate. The reaction occurs at a temperature greater than 225° C. and the feed stream has a liquid hourly space velocity of at least 0.2 hr | 05-01-2014 |
20140128641 | Process for Recovering Ethanol - Recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid. Separation and purification processes of the crude ethanol products are employed to allow recovery of ethanol and remove impurities. | 05-08-2014 |
20140128642 | Process for Vapor Phase Hydrogenation - A process for selective formation of ethanol from acetic acid includes contacting a feed stream containing acetic acid and hydrogen at an elevated temperature with catalyst comprising platinum and tin on a high surface area silica promoted with calcium metasilicate. Selectivities to ethanol of over 85% are achieved at 280° C. with catalyst life in the hundreds of hours. | 05-08-2014 |
20140142351 | Combined Column for Separating Products of Different Hydrogenation Reactors - Recovery of ethanol from a crude product comprising ethyl acetate obtained from the hydrogenation of acetic acid. The crude product is separated to form an organic stream that may be subjected to hydrogenolysis to form ethanol. The organic phase may comprise ethyl acetate is reacted via hydrogenolysis form ethanol that may be directly or indirectly fed to the separation zone or the hydrogenation reactor. | 05-22-2014 |
20140163263 | Group VIII Metal Hydrogenolysis Catalysts Having Low Selectivity to Ethers - Group VIII metal containing catalysts used in processes for producing ethanol from ethyl acetate by reacting the ethyl acetate with hydrogenation. The Group VIII metal containing catalyst has a selectivity to ether, especially diethyl ether, that is very low. The process may be integrated with an ethyl acetate production process, such as esterification, hydrogenation, or dehydrogenation. | 06-12-2014 |
20150024927 | CHEMISORPTION OF ETHYL ACETATE DURING HYDROGENATION OF ACETIC ACID TO ETHANOL - A hydrogenation catalyst and process using the catalyst for converting a mixture comprising acetic acid and ethyl acetate to ethanol at a first temperature, and the catalyst desorbs ethyl acetate, in the absence of hydrogen, at a second temperature that is greater than the first temperature. The catalyst has a suitable chemisorption of ethyl acetate at the first temperature in the absence of hydrogen. In one embodiment, the first temperature ranges from 125° C. to 350° C. and the second temperature ranges from 300° C. to 600° C. The catalyst comprises one or more active metals or oxide thereof on a support that comprises tungsten or an oxide thereof. The one or more active metals are selected from the group consisting of cobalt, copper, gold, iron, nickel, palladium, platinum, iridium, osmium, rhenium, rhodium, ruthenium, tin, zinc, lanthanum, cerium, manganese, chromium, vanadium, and molybdenum. | 01-22-2015 |
20150025281 | Process for Producing Ethanol Using Hydrogenation Catalysts - The present invention relates to catalysts, to processes for making catalysts and to chemical processes employing such catalysts. The catalysts are preferably used for converting acetic acid to ethanol. The catalyst comprises a precious metal and one or more active metals on a modified support. The modified support may comprise cobalt tungstate. | 01-22-2015 |
20150031924 | Recovering Ethanol with Sidestreams to Regulate C3+ Alcohols Concentrations - This invention relates to purification and/or recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid. Separation and purification processes of a crude ethanol mixture are employed to allow recovery of ethanol and remove impurities. In particular, the process involves one or more sidestreams to regulate C | 01-29-2015 |