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公开(公告)号：US5500099A
公开(公告)日：1996-03-19
申请号：US437595
申请日：1995-05-09
申请人： Ricardo E. Borjas , Carina Araullo-McAdams , Steven R. Alexander , George A. Blay , Yaw-Hwa Liu
发明人： Ricardo E. Borjas , Carina Araullo-McAdams , Steven R. Alexander , George A. Blay , Yaw-Hwa Liu
摘要： The present invention provides a process for preparing arylglyoxals which comprise the steps of (a) electrochemically oxidizing an arylketone at a pH of less than about seven and at a temperature of from about -20.degree. C. to about 120.degree. C. in the presence of an electrolyte for a sufficient period of time to form an arylacetal, and (b) subjecting said acetal to hydrolysis for a sufficient period of time and under suitable temperature and pressure conditions to form said arylglyoxal.
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公开(公告)号：US06251256B1
公开(公告)日：2001-06-26
申请号：US09244953
申请日：1999-02-04
申请人： George A. Blay , Ricardo E. Borjas
发明人： George A. Blay , Ricardo E. Borjas
IPC分类号： C25B300
CPC分类号： C25B3/02
摘要： A process for electrochemical oxidation of aldehydes to esters is provided. The invention includes electrooxidation at a pH where an intermediate hemiacetal is favored, thereby providing for maximum selectivity to the desired ester and for maximum reaction efficiency. In particular, the invention provides for the electrooxidation of acetaldehyde to methyl acetate. The invention is illustrated with reference reactants native to the carbonylation process for the manufacture of acetic acid. Processes described herein are readily adapted to an industrial scale, particularly for the removal of acetaldehyde from process streams.
摘要翻译： 提供了一种将醛电化学氧化成酯的方法。 本发明包括在中等半缩醛有利的pH下的电氧化，从而提供对所需酯的最大选择性和最大的反应效率。 特别地，本发明提供了乙醛向乙酸甲酯的电氧化。 用于制备乙酸的羰基化方法天然的参考反应物说明了本发明。 本文所述的方法容易适应于工业规模，特别是用于从工艺流中除去乙醛。
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公开(公告)号：US5344979A
公开(公告)日：1994-09-06
申请号：US54733
申请日：1993-04-29
申请人： Edward G. Zey , George A. Blay
发明人： Edward G. Zey , George A. Blay
IPC分类号： C07C231/24
CPC分类号： C07C231/24
摘要： A method is provided for purifying a crude N-acetyl-para-aminophenol (APAP) containing color bodies or their precursors, the method comprising: a) forming a wet crude APAP; and b) subsequently drying said crude APAP in the presence of a sufficient amount of an acetylating agent for a sufficient period of time to convert said color bodies or their precursors to substantially non-color bodies.
摘要翻译： 提供了一种纯化含有着色体或其前体的粗N-乙酰基对氨基苯酚（APAP）的方法，该方法包括：a）形成湿粗APAP; 和b）随后在足够量的乙酰化剂存在下将所述粗APAP干燥足够长的时间以将所述着色体或其前体转化成基本上非色体。
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公开(公告)号：US4352738A
公开(公告)日：1982-10-05
申请号：US205388
申请日：1980-11-10
申请人： George A. Blay , Enrique R. Witt
发明人： George A. Blay , Enrique R. Witt
CPC分类号： G05D21/02 , C02F3/006 , C02F3/2806 , C12M21/04 , C12M41/34 , C12M41/36 , Y02E50/343
摘要： In the operation of a recycling anaerobic filter for treating aqueous waste streams, the rate of production of methane is measured continually at frequent intervals and the COD feed rate is varied to maintain a predetermined, timed, relationship between that varied feed rate and the measured methane production rate.
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公开(公告)号：US06657078B2
公开(公告)日：2003-12-02
申请号：US09778663
申请日：2001-02-07
IPC分类号： C07C5112
摘要： A low energy process for producing acetic acid by the carbonylation of methanol is disclosed. The process involves a rhodium-catalyzed system operated at less than about 14% water utilizing up to 2 distillation columns. The process is preferably controlled such that the product stream has a low level of propionic acid impurity and the level of aldehyde impurities is minimized by way of aldehyde removal or minimizing aldehyde generation. The level of iodides is controlled by contacting the product, at elevated temperatures, with ion exchange resins. In preferred embodiments, at least one silver or mercury exchanged macroreticular strong acid ion exchange resin is used to purify the product. The high temperature treatment provides the added benefit of controlling the Color Value (Pt—Co units) of the product stream.
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6.发明授权Removal or reduction of permanganate reducing compounds and alkyl iodides from a carbonylation process stream 有权从羰基化工艺流中除去或还原高锰酸盐还原化合物和烷基碘公开(公告)号：US06339171B1
公开(公告)日：2002-01-15
申请号：US09303986
申请日：1999-05-03
申请人： Madan Singh , George A. Blay , Michael L. Karnilaw , Melchior A. Meilchen , Robin Suzanne Tanke , G. Paull Torrence
发明人： Madan Singh , George A. Blay , Michael L. Karnilaw , Melchior A. Meilchen , Robin Suzanne Tanke , G. Paull Torrence
IPC分类号： C07C5112
摘要： Disclosed is a method to manufacture high purity acetic acid. Although described in relation to that produced by a low water carbonylation process the present invention is applicable to other mechanisms for production of acetic acid which results in formation of permanganate reducing compounds such as acetaldehyde and its derivatives, and alkyl iodide impurities in intermediate process streams. It has been found that permanganate reducing compounds and alkyl iodides may be conveniently removed from a light phase of an intermediate stream in the reaction process by employing a multiple distillation process coupled with an optional post extraction of acetaldehyde. The distillation process involves first distilling a light phase to concentrate the permanganate reducing compounds, and in particular the acetaldehyde, and then separating the permanganate reducing compounds and alkyl iodides in a second distillation tower. The second distillation serves to remove the permanganate reducing compounds and alkyl iodides from methyl iodide, methyl acetate, and methanol mixture. As an optional third step, the twice distilled stream may be directed to an extractor to recover any remaining quantities of methyl iodide from the aqueous acetaldehyde waste stream. This process affords a final product in greater than 99% purity. It has been found that during shut down of the inventive process, higher molecular weight polymers of acetaldehyde tend to form in the base of the second distillation tower. To avoid or minimize the formation of these polymers, a constant flow of solvent is passed through the base of the column.
摘要翻译： 公开了一种制造高纯度乙酸的方法。 虽然关于通过低水羰基化方法产生的本发明描述了本发明可应用于生产乙酸的其它机制，其导致在中间工艺流中形成高锰酸盐还原化合物如乙醛及其衍生物和烷基碘杂质。 已经发现，通过使用与任选的乙醛后萃取相结合的多重蒸馏方法，可以方便地从反应过程中的中间物流的轻质相中除去高锰酸盐还原化合物和烷基碘化物。 蒸馏过程包括首先蒸馏轻质相以浓缩高锰酸盐还原化合物，特别是乙醛，然后在第二蒸馏塔中分离高锰酸盐还原化合物和烷基碘化物。 第二次蒸馏用于从甲基碘，乙酸甲酯和甲醇混合物中除去高锰酸盐还原化合物和烷基碘。 作为任选的第三步骤，可以将两次蒸馏的流引导至萃取器以从乙醛废水流中回收任何剩余量的甲基碘。 该方法提供了大于99％纯度的最终产物。已经发现在本发明方法的关闭期间，乙醛的较高分子量聚合物倾向于在第二蒸馏塔的底部形成。 为了避免或最小化这些聚合物的形成，将恒定流量的溶剂通过柱的底部。
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公开(公告)号：US4190606A
公开(公告)日：1980-02-26
申请号：US842778
申请日：1977-10-17
申请人： George A. Blay
发明人： George A. Blay
摘要： A process for dehalogenation of alpha halogenated carbonyl compounds and/or the prevention of the formation of such. The process for dehalogenation generally comprises causing there to be in solution the halogenated compound, cuprous ions (such as from cuprous chloride) and hydrogen ions (such as from hydrochloric acid), the process to be conducted in the absence of molecular oxygen, or, if molecular oxygen is present, there being an excess of cuprous ions sufficient to completely react with the molecular oxygen present. The present method can also be used to suppress formation of halogenated carbonyl compounds in processes where conditions exist which favor such formation.
摘要翻译： α卤代羰基化合物脱卤的方法和/或防止其形成。 脱卤方法通常包括在溶液中使卤代化合物，亚硝酸根离子（例如氯化亚铜）和氢离子（例如盐酸）溶解在不存在分子氧的情况下进行的方法，或者， 如果存在分子氧，则存在足以与存在的分子氧完全反应的过量的亚铜离子。 本方法也可用于在有利于这种形成的条件的方法中抑制卤代羰基化合物的形成。
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公开(公告)号：US5567299A
公开(公告)日：1996-10-22
申请号：US577679
申请日：1995-12-21
申请人： Ricardo E. Borjas , Carina Araullo-McAdams , Steven R. Alexander , George A. Blay , Yaw-Hwa Liu
发明人： Ricardo E. Borjas , Carina Araullo-McAdams , Steven R. Alexander , George A. Blay , Yaw-Hwa Liu
摘要： The present invention provides a process for preparing arylglyoxals which comprise the steps of (a) electrochemically oxidizing an arylketone at a pH of less than about seven and at a temperature of from about -20.degree. C. to about 120.degree. C. in the presence of an electrolyte for a sufficient period of time to form an arylacetal, and (b) subjecting said acetal to hydrolysis for a sufficient period of time and under suitable temperature and pressure conditions to form said arylglyoxal.
摘要翻译： 本发明提供了一种制备芳基乙二醛的方法，其包括以下步骤：（a）在小于约7的pH和约-20℃至约120℃的温度下电化学氧化芳基酮， 的电解质足够长的时间以形成芳基缩醛，和（b）使所述缩醛在适当的温度和压力条件下水解足够长的时间以形成所述芳基乙二醛。
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公开(公告)号：US4568464A
公开(公告)日：1986-02-04
申请号：US571132
申请日：1984-01-16
申请人： George A. Blay , Enrique R. Witt
发明人： George A. Blay , Enrique R. Witt
CPC分类号： G05D21/02 , C02F3/006 , C02F3/2806 , C12M21/04 , C12M41/34 , C12M41/36 , Y02E50/343
摘要： In the operation of a recycling anaerobic filter for treating aqueous waste streams, the rate of production of methane is measured continually at frequent intervals and the COD feed rate is varied to maintain a predetermined, timed, relationship between that varied feed rate and the measured methane production rate.
摘要翻译： 在处理含水废水的再循环厌氧过滤器的运行中，连续测量甲烷的产生速率是频繁的，并且COD进料速率是变化的，以保持该变化的进料速率与所测量的甲烷之间的预定的，及时的关系 生产率。
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公开(公告)号：US4214050A
公开(公告)日：1980-07-22
申请号：US957947
申请日：1978-11-06
申请人： George A. Blay
发明人： George A. Blay
CPC分类号： G01N27/38 , C12M41/26 , C12Q1/04 , Y02E50/343
摘要： The fouling of electrodes of pH meters used in anaerobic bacteria digestion processes may be prevented by intermittently immersing the electrodes in an aqueous bactericidal solution, which bactericidal solution is preferably buffered to a known pH. While immersed in such a buffered bactericidal solution, there is simultaneously accomplished the killing of the bacteria accumulated on the electrode and the calibration of the pH meter.
摘要翻译： 在厌氧细菌消化过程中使用的pH值电极的结垢可以通过将电极间歇浸入杀菌溶液中来防止，该杀菌溶液优选缓冲至已知的pH。 当浸入这种缓冲杀菌溶液中时，同时完成杀死积聚在电极上的细菌和pH计的校准。
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