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| Number | Title | Issue Date |
| 8168822 | Acetic acid production by way of carbonylation with enhanced reaction and flashing A method of making acetic acid includes: (a) catalytically reacting methanol or a reactive derivative thereof with carbon monoxide in the presence of a homogeneous Group VIII metal catalyst and a methyl iodide promoter in a reactor vessel in a liquid reaction mixtur... | 05/01/2012 |
| 8101796 | Process for the production of acetic acid Process for producing acetic acid by carbonylating methanol and/or a reactive derivative thereof with carbon monoxide in at least one carbonylation reaction zone containing a liquid reaction composition containing an iridium carbonylation catalyst, methyl iodide co-... | 01/24/2012 |
| 8076508 | Preparation of acetic acid A process for producing acetic acid is disclosed. The process comprises carbonylating methanol to form a reaction mixture and flashing the reaction mixture to form a vapor stream and a liquid stream. The flash tank is equipped with a distillation column. The vapor s... | 12/13/2011 |
| 8076507 | Removal of permanganate reducing compounds from methanol carbonylation process stream An improvement of the methanol carbonylation process for manufacturing acetic acid is disclosed. Specifically disclosed is a method for reducing the formation of alkyl iodides and C3-8 carboxylic acids by removing permanganate reducing compounds (“PRC's... | 12/13/2011 |
| 8053600 | Process for the preparation of carboxylic acids and/or derivatives thereof Process for preparing an aliphatic carboxylic acid having (n+1) carbon atoms, where n is an integer up to 6, and/or an ester or anhydride thereof by contacting an aliphatic alcohol having n carbon atoms and/or a reactive derivative thereof with carbon monoxide under... | 11/08/2011 |
| 7989659 | Method and apparatus for making acetic acid with improved light ends column productivity An improved apparatus and method of producing acetic acid includes condensing overhead vapor to provide reflux to the light ends column as well as condensing vapor from a central portion of the light ends column to increase capacity. Throughput or load on the light ... | 08/02/2011 |
| 7902398 | Method and apparatus for carbonylation with reduced catalyst loss An apparatus and method for carbonylating a reactant, including sequestering Group VIII catalyst metal from a process stream which generally has a ppb concentration of the catalyst metal. The process stream is treated with a polymer having nitrogen-containing hetero... | 03/08/2011 |
| 7884236 | Process for the production of acetic acid A process for the production of acetic acid by carbonylating methanol and/or a reactive derivative thereof with carbon monoxide in the presence of a promoted iridium carbonylation catalyst wherein the promoters are boron and gallium. ... | 02/08/2011 |
| 7884237 | Methanol carbonylation with improved aldehyde removal Methanol carbonylation with improved aldehyde removal includes: (a) scrubbing light ends and aldehyde impurity from vent gas with an absorber solvent; (b) stripping absorbed light ends and aldehyde impurity from the absorber solvent to provide a vent-recovered light... | 02/08/2011 |
| 7838701 | Control method for process of removing permanganate reducing compounds from methanol carbonylation process Disclosed is a method of controlling a separation process for removing permanganate reducing compounds from a process stream in the methanol carbonylation process for making acetic acid, where the method includes the steps of measuring the density of a stream contai... | 11/23/2010 |
| 7820855 | Method and apparatus for carbonylating methanol with acetic acid enriched flash stream A carbonylation process for producing acetic acid including: (a) carbonylating methanol or its reactive derivatives in the presence of a Group VIII metal catalyst and methyl iodide promoter to produce a liquid reaction mixture including acetic acid, water, methyl ac... | 10/26/2010 |
| 7790919 | Removing hydrocarbon impurities from acetic acid production process A method for removing hydrocarbon impurities from an acetic acid production process is disclosed. The method comprises distilling at least a portion of the heavy organic phase from the decanter of the acetic acid production process into a vapor stream comprising the... | 09/07/2010 |
| 7790920 | Preparation of acetic acid A process for producing acetic acid is disclosed. The process comprises carbonylating methanol to form a reaction mixture comprising a catalyst, catalyst stabilizer, acetic acid, methanol, methyl iodide, methyl acetate, water, and carbon monoxide and introducing at ... | 09/07/2010 |
| 7767848 | Method of controlling acetic acid process A method is disclosed for controlling a methanol carbonylation process for producing acetic acid. The method includes the steps of monitoring the rate of production of the acetic acid; reducing the production rate in response to a change in a process condition or a ... | 08/03/2010 |
| 7767849 | Integrated process for producing carbonylation acetic acid, acetic anhydride, or coproduction of each from a methyl acetate by-product stream The present invention is directed to using methyl acetate from a vinyl acetate-based or a vinyl-or ethylene-alcohol based polymer or copolymer process directly for use in a methanol carbonylation production process to produce acetic acid, acetic anhydride, or a copr... | 08/03/2010 |
| 7741517 | Process for the production of acetic acid A process for the production of acetic acid by carbonylating methanol and/or a reactive derivative thereof with carbon monoxide in the presence of an iridium promoted carbonylation catalyst wherein the promoters are ruthenium and at least one of niobium and tantalum... | 06/22/2010 |
| 7737298 | Production of acetic acid and mixtures of acetic acid and acetic anhydride Disclosed is a process for the production of acetic acid or mixtures of acetic acid and acetic anhydride in a carbonylation process wherein a mixture comprising methyl acetate and/or dimethyl ether and methyl iodide is contacting in the liquid phase with carbon mono... | 06/15/2010 |
| 7692040 | Process for the production of acetic acid A process for the production of acetic acid by carbonylating methanol and/or a reactive derivative thereof with carbon monoxide in at least one carbonylation reaction zone containing a liquid reaction composition comprising an iridium carbonylation catalyst, methyl ... | 04/06/2010 |
| 7683212 | Methods for producing acetic acid A method produces acetic acid by continuously reacting methanol with carbon monoxide in the presence of a rhodium catalyst, an iodide salt, methyl iodide, methyl acetate, and water; and thereby producing acetic acid at a production rate of 11 mol/L·hr or more while... | 03/23/2010 |
| 7619113 | Method and apparatus for making acetic acid with improved purification An improved method of producing acetic acid includes condensing overhead vapor from a light ends column and decanting the condensed vapor to a light phase and a heavy phase. The heavy phase consists predominantly of methyl iodide and at least a portion of the decant... | 11/17/2009 |
| 7476761 | Process for producing acetic acid A process for producing a carboxylic acid comprises allowing an alcohol having a carbon number of “n” to continuously react with carbon monoxide in the presence of a carbonylation catalyst system, and a limited amount of water, continuously withdrawing the react... | 01/13/2009 |
| 7473800 | Method of manufacturing acetic acid Acetic acid is manufactured by carbonylating methanol with carbon monoxide by way of a heterogeneous catalytic reaction in a bubble column reactor. The carbonylating reaction is conducted with a solid catalyst concentration of not less than 100 kg/m3 in terms of the... | 01/06/2009 |
| 7470811 | Integrated process for acetic acid and methanol An integrated process for making methanol, acetic acid, and a product from an associated process is disclosed. Syngas (120) is produced by combined steam reforming (109) and autothermal reforming (118) of natural gas (102) where a portion... | 12/30/2008 |
| 7381837 | Method and apparatus for controlling feed of gaseous reaction component A method comprises continuously supplying an alcohol to a pressurized reaction system, pressurizing carbon monoxide with a compressor 8 attached to a first feed line 22, for continuously supplying carbon monoxide to the reaction system via a second fee... | 06/03/2008 |
| 7368597 | Carbonylation process using metal-polydentate ligand catalysts A process for the liquid phase carbonylation of an alcohol and/or a reactive derivative thereof in the presence of hydrogen in which there is employed a catalyst comprising rhodium of iridium coordinated with a polydentate ligand. ... | 05/06/2008 |
| 7351559 | Process for producing ethanol A process for producing ethanol including a combination of biochemical and synthetic conversions results in high yield ethanol production with concurrent production of high value coproducts. An acetic acid intermediate is produced from carbohydrates, such as corn, u... | 04/01/2008 |
| 7345197 | Preparation of acetic acid A method for removing aldehyde impurities from acetic acid is disclosed. The method comprises extracting the aldehyde impurities from a methyl iodide solution such as the decanter heavy phase with a polyol. After the aldehyde impurities are removed, the methyl iodid... | 03/18/2008 |
| 7342129 | Process for the production of acetic acid A process for the production of acetic acid by carbonylating methanol and/or a reactive derivative thereof with carbon monoxide in a carbonylation reactor containing a liquid reaction composition comprising an iridium carbonylation catalyst, methyl iodide co-catalys... | 03/11/2008 |
| 7335799 | Hydroxyl compounds and compositions for cholesterol management and related uses The present invention relates to novel hydroxyl compounds, compositions comprising hydroxyl compounds, and methods useful for treating and preventing a variety of diseases and conditions such as, but not limited to aging, Alzheimer's Disease, cancer, cardiovascular ... | 02/26/2008 |
| 7276626 | Carbonylation process using metal-tridentate ligand catalysts A process for the production of a carboxylic acid and/or the alcohol ester of a carboxylic acid by carbonylating an alcohol and/or a reactive derivative thereof with carbon monoxide employing as the carbonylation catalyst, cobalt, rhodium or iridium coordinated with... | 10/02/2007 |
| 7271293 | Control method for process of removing permanganate reducing compounds from methanol carbonylation process Disclosed is a method of controlling a separation process for removing permanganate reducing compounds from a process stream in the methanol carbonylation process for making acetic acid, where the method includes the steps of measuring the density of a stream contai... | 09/18/2007 |
| 7265240 | Process for the carbonylation of ethylenically unsaturated compounds A process for the carbonylation of ethylenically unsaturated compounds is described. The process comprises reacting an ethylenically unsaturated compound with carbon monoxide in the presence of a source of hydroxyl groups and a catalyst system. The catalyst system i... | 09/04/2007 |
| 7256308 | Process for the production of acetic acid A process for the production of acetic acid by carbonylating methanol and/or a reactive derivative thereof in a carbonylation reactor in a liquid reaction composition comprising an iridium carbonylation catalyst, methyl iodide, methyl acetate, water, acetic acid and... | 08/14/2007 |
| 7256152 | Composition of catalyst and solvent and catalysis processes using this composition A composition defined: either as comprising at least one Broensted acid, designated HB, dissolved in a liquid medium with an ionic nature of general formula Q+A−, in which Q+ represents an organic cation and A− represents an an... | 08/14/2007 |
| 7223886 | Removal of permanganate reducing compounds from methanol carbonylation process stream An improvement of the methanol carbonylation process for manufacturing acetic acid is disclosed. Specifically disclosed is a method for reducing the formation of alkyl iodides and C3-8 carboxylic acids by removing permanganate reducing compounds (“PRC's... | 05/29/2007 |
| 7223883 | Removal of permanganate reducing compounds from methanol carbonylation process stream An improvement of the methanol carbonylation process for manufacturing acetic acid is disclosed. Specifically disclosed is a method for removing permanganate reducing compounds (“PRC's”) from the condensed light ends overhead stream, including (a) distilling at ... | 05/29/2007 |
| 7208625 | Removing permanganate-reducing impurities from acetic acid A method for removing permanganate-reducing impurities from an acetic acid product is disclosed. The method comprises contacting an acetic acid product containing permanganate-reducing impurities with peracetic acid and an oxygen-containing gas. The method is partic... | 04/24/2007 |
| 7208624 | Process for producing acetic acid An improved process is disclosed for producing acetic acid, including the following steps: reacting a carbonylatable reactant such as methanol, methyl acetate, methyl formate or dimethyl ether with carbon monoxide in a reaction medium containing water, methyl iodide... | 04/24/2007 |
| 7202382 | Process for the production of acetic acid A process for the production of acetic acid which comprises carbonylating methanol and/or a reactive derivative thereof in one or more reactors in a liquid reaction composition comprising iridium carbonylation catalyst, ruthenium promoter, methyl iodide co-catalyst,... | 04/10/2007 |
| 7169954 | Method for preparing ruthenium-carrying alumina and method for oxidizing alcohol A ruthenium-carrying alumina, which is prepared by suspending alumina in a solution containing trivalent ruthenium and adding a base to the suspension, is provided. This ruthenium-carrying alumina is useful as a catalyst for oxidizing alcohols by contacting the alco... | 01/30/2007 |
