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公开(公告)号：US11807597B2
公开(公告)日：2023-11-07
申请号：US17710392
申请日：2022-03-31
发明人： Vasilis Papavassiliou , Noel C. Hallinan , David L. Ramage , Gary A. Sawyer , Rene Zamarripa , Michael E. Fitzpatrick , Brian A. Salisbury
CPC分类号： C07C51/12 , B01J19/0013 , B01J19/2465 , B01J23/464 , C07C51/445 , C07C51/50
摘要： Methods and systems for producing acetic acid, including glacial acetic acid. A first stream of a reactor fluid that includes methyl acetate, water, and a first amount of carbon monoxide may be forwarded from a reactor to a reactor cooler to form a cooled reactor fluid. The cooled reactor fluid may have a concentration of methyl acetate that is lower than the concentration of methyl acetate in the reactor fluid.
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公开(公告)号：US20210046465A1
公开(公告)日：2021-02-18
申请号：US16990639
申请日：2020-08-11
发明人： David L. Ramage , Rene Zamarripa
摘要： Reactor liquids, compositions, and methods of forming acetic acid, which may reduce catalyst loss. The reactor liquids and compositions may include, and the methods may use, a tri-aliphatic hydrocarbyl phosphine oxide. The carbonylation catalyst used in the methods may include rhodium. A composition comprising: acetic acid; water; and at least one tri-aliphatic hydrocarbyl phosphine oxide; wherein the acetic acid is present in the composition at an amount of about 60% to about 80%, by weight, based on the weight of the composition; wherein the water is present in the composition at an amount of about 0.1% to about 6%, by weight, based on the weight of the composition; and wherein the at least one tri-aliphatic hydrocarbyl phosphine oxide is present in the composition at an amount of about 2% to about 20%, by weight, based on the weight of the composition.
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公开(公告)号：US20170210690A1
公开(公告)日：2017-07-27
申请号：US15483681
申请日：2017-04-10
摘要： The present disclosure provides for a method for measuring the concentration of one or more components in a reactor or a separation unit of an acetic acid process by Raman spectroscopic analyses. In some embodiments, the conditions in the reactor or in any subsequent step of the acetic acid production process are adjusted in response to the measured concentration of one or more components.
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公开(公告)号：US09656939B2
公开(公告)日：2017-05-23
申请号：US15062756
申请日：2016-03-07
IPC分类号： C07C51/12 , G01N21/65 , G01N21/3577 , G01N21/35
CPC分类号： C07C51/12 , G01N21/3577 , G01N21/65 , G01N2021/3595 , C07C53/08
摘要： The present disclosure provides for a method for measuring the concentration of one or more components in the reactor or a separation unit of an acetic acid process by both infrared and Raman spectroscopic analyses. In some embodiments, the conditions in the reactor or in any subsequent step of the acetic acid production process are adjusted in response to the measured concentration of one or more components.
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公开(公告)号：US20150246866A1
公开(公告)日：2015-09-03
申请号：US14630054
申请日：2015-02-24
摘要： Processes for producing acetic acid and determining corrosion therein are described herein. The processes generally include contacting methanol and carbon monoxide in the presence of a liquid reaction medium under carbonylation conditions sufficient to form acetic acid, wherein the liquid reaction medium includes: a carbonylation catalyst selected from rhodium catalysts, iridium catalysts and palladium catalysts; from 1 wt. % to 14 wt. % water; and one or more, in-situ generated derivatives of the one or more additives and combinations thereof; wherein the one or more additives are independently selected from non-benzoyl containing pentavalent phosphine oxides, compound mixtures of at least four phosphine oxides and pentavalent aryl or alkaryl phosphine oxides including one or more benzoyl groups; and recovering acetic acid from the process.
摘要翻译： 本文描述了生产乙酸并确定腐蚀的方法。 所述方法通常包括在足以形成乙酸的羰基化条件下在液体反应介质存在下使甲醇和一氧化碳接触，其中液体反应介质包括：选自铑催化剂，铱催化剂和钯催化剂的羰基化催化剂; 从1重量％ ％至14重量％ ％ 水; 和一种或多种原位产生的一种或多种添加剂及其组合的衍生物; 其中所述一种或多种添加剂独立地选自非苯甲酰基的五价氧化膦，至少四种氧化膦的化合物混合物和包括一个或多个苯甲酰基的五价芳基或烷芳基氧化膦; 并从该过程中回收乙酸。
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公开(公告)号：US20230234908A1
公开(公告)日：2023-07-27
申请号：US18095099
申请日：2023-01-10
摘要： A system and method for removing acetaldehyde from an acetic acid system, including providing a solution from the acetic acid system, the stream having methyl iodide and acetaldehyde, and contacting the solution with a polymer-bound polyol.
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公开(公告)号：US20190292124A1
公开(公告)日：2019-09-26
申请号：US16362245
申请日：2019-03-22
摘要： A method of producing acetic acid, the method comprising: reacting methanol and/or methanol derivatives with carbon monoxide in the presence of a liquid reaction medium under carbonylation conditions to form a carbonylation product comprising acetic acid and one or more oxidizable impurities; and contacting at least a portion of the carbonylation product or a derivative thereof with an adsorbent at adsorption conditions to provide a purified product comprising a reduced concentration of at least one of the one or more oxidizable impurities relative to a concentration thereof in the at least a portion of the carbonylation product or the derivative thereof. A system for carrying out the method is also provided.
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公开(公告)号：US10118884B2
公开(公告)日：2018-11-06
申请号：US15483681
申请日：2017-04-10
摘要： The present disclosure provides for a method for measuring the concentration of one or more components in a reactor or a separation unit of an acetic acid process by Raman spectroscopic analyses. In some embodiments, the conditions in the reactor or in any subsequent step of the acetic acid production process are adjusted in response to the measured concentration of one or more components.
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公开(公告)号：US09908833B2
公开(公告)日：2018-03-06
申请号：US15368202
申请日：2016-12-02
IPC分类号： C07C51/12 , C07C45/74 , C07C51/487
CPC分类号： C07C51/12 , C07C45/74 , C07C51/487 , C07C53/08 , C07C47/21
摘要： The present technology discloses processes for producing carboxylic acid. In some embodiments, the processes include contacting methanol and carbon monoxide in the presence of a liquid reaction medium under carbonylation conditions sufficient to form a carbonylation product, including acetic acid and acetaldehyde. The liquid reaction medium may include a carbonylation catalyst selected from rhodium catalysts, iridium catalysts and palladium catalysts; and water in a water concentration in a range of 1 wt. % to 14 wt. % based on the total weight of the liquid reaction medium. In certain embodiments, the processes comprise contacting at least a portion of the carbonylation product or a derivative thereof with a micro-porous material such as a silicoaluminophosphate (SAPO) to selectively convert at least a portion of the acetaldehyde to crotonaldehyde.
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公开(公告)号：US20170158592A1
公开(公告)日：2017-06-08
申请号：US15368202
申请日：2016-12-02
CPC分类号： C07C51/12 , C07C45/74 , C07C51/487 , C07C53/08 , C07C47/21
摘要： The present technology discloses processes for producing carboxylic acid. In some embodiments, the processes include contacting methanol and carbon monoxide in the presence of a liquid reaction medium under carbonylation conditions sufficient to form a carbonylation product, including acetic acid and acetaldehyde. The liquid reaction medium may include a carbonylation catalyst selected from rhodium catalysts, iridium catalysts and palladium catalysts; and water in a water concentration in a range of 1 wt. % to 14 wt. % based on the total weight of the liquid reaction medium. In certain embodiments, the processes comprise contacting at least a portion of the carbonylation product or a derivative thereof with a micro-porous material such as a silicoaluminophosphate (SAPO) to selectively convert at least a portion of the acetaldehyde to crotonaldehyde.
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