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公开(公告)号：US09120735B2
公开(公告)日：2015-09-01
申请号：US14351404
申请日：2012-09-10
申请人： Scott Han , Christopher D. Frick , Dmitri A. Kraptchetov , Daniel J. Martenak , Nelson I. Quiros , Timothy J. Donnelly
发明人： Scott Han , Christopher D. Frick , Dmitri A. Kraptchetov , Daniel J. Martenak , Nelson I. Quiros , Timothy J. Donnelly
IPC分类号： C07C51/215 , C07C51/25
CPC分类号： C07C51/252 , C07C51/215 , C07C57/04
摘要： The application concerns a process comprising: (A) contacting a gas comprising oxygen, propane and propylene with at least one catalyst under reaction conditions sufficient to at least partially convert the propylene into a final product comprising acrylic acid; (B) feeding said final product to a separation column, in which the final product is split into a liquid stream, which is rich in acrylic acid, and a gaseous by-product stream comprising propane and propylene in a volume ratio of from 99.9:0.1 to 95:5; (C) contacting the gaseous by-product stream with oxygen in the presence of a catalyst under reaction conditions sufficient to at least partially convert propane to acrylic acid.
摘要翻译： 该应用涉及一种方法，其包括：（A）在足以至少部分地将丙烯转化成包含丙烯酸的最终产物的反应条件下使包含氧，丙烷和丙烯的气体与至少一种催化剂接触; （B）将所述最终产物进料到分离塔，其中最终产物被分成富含丙烯酸的液体流，以及包含丙烷和丙烯的气体副产物流，其体积比为99.9： 0.1〜95：5; （C）在足以使丙烷至丙烯酸至少部分转化的反应条件下，在催化剂存在下使气态副产物流与氧接触。
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公开(公告)号：US20140243554A1
公开(公告)日：2014-08-28
申请号：US14351404
申请日：2012-09-10
申请人： Scott Han , Christopher D. Frick , Dmitri A. Kraptchetov , Daniel J. Martenak , Nelson I. Quiros , Timothy J. Donnelly
发明人： Scott Han , Christopher D. Frick , Dmitri A. Kraptchetov , Daniel J. Martenak , Nelson I. Quiros , Timothy J. Donnelly
IPC分类号： C07C51/25 , C07C51/215
CPC分类号： C07C51/252 , C07C51/215 , C07C57/04
摘要： The application concerns a process comprising: (A) contacting a gas comprising oxygen, propane and propylene with at least one catalyst under reaction conditions sufficient to at least partially convert the propylene into a final product comprising acrylic acid; (B) feeding said final product to a separation column, in which the final product is split into a liquid stream, which is rich in acrylic acid, and a gaseous by-product stream comprising propane and propylene in a volume ratio of from 99.9:0.1 to 95:5; (C) contacting the gaseous by-product stream with oxygen in the presence of a catalyst under reaction conditions sufficient to at least partially convert propane to acrylic acid.
摘要翻译： 该应用涉及一种方法，其包括：（A）在足以至少部分地将丙烯转化成包含丙烯酸的最终产物的反应条件下使包含氧，丙烷和丙烯的气体与至少一种催化剂接触; （B）将所述最终产物进料到分离塔，其中最终产物被分成富含丙烯酸的液体流，以及包含丙烷和丙烯的气体副产物流，其体积比为99.9： 0.1〜95：5; （C）在足以使丙烷至丙烯酸至少部分转化的反应条件下，在催化剂存在下使气态副产物流与氧接触。
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3.发明授权公开(公告)号：US09035092B2
公开(公告)日：2015-05-19
申请号：US14345491
申请日：2012-08-23
IPC分类号： C07C51/25 , C07C253/24 , C07C253/26 , C07C51/215
CPC分类号： C07C51/252 , C07C51/215 , C07C253/24 , C07C253/26 , Y02P20/582 , C07C255/08 , C07C57/04
摘要： A process for producing unsaturated carboxylic acids or unsaturated nitriles by vapor phase oxidation reaction of their corresponding C3 to C5 alkanes, C3 to C5 alkenes, and mixtures thereof, as a hydrocarbon starting material, wherein the process performance is monitored and the path of gasses through catalyst beds is altered. Improved catalyst lifetimes may be achieved.
摘要翻译： 通过其相应的C3至C5烷烃，C3至C5烯烃及其混合物的气相氧化反应制备不饱和羧酸或不饱和腈的方法，作为烃起始材料，其中监测工艺性能，并且气体通过 催化剂床被改变。 可以实现改进的催化剂寿命。
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4.发明申请PROCESS FOR THE (AMM)OXIDATION OF LOWER MOLECULAR WEIGHT ALKANES AND ALKENES 有权（AMM）氧化低分子量碱金属和碱金属的方法公开(公告)号：US20140350298A1
公开(公告)日：2014-11-27
申请号：US14345491
申请日：2012-08-23
IPC分类号： C07C51/25
CPC分类号： C07C51/252 , C07C51/215 , C07C253/24 , C07C253/26 , Y02P20/582 , C07C255/08 , C07C57/04
摘要： A process for producing unsaturated carboxylic acids or unsaturated nitriles by vapor phase oxidation reaction of their corresponding C3 to C5 alkanes, C3 to C5 alkenes, and mixtures thereof, as a hydrocarbon starting material, wherein the process performance is monitored and the path of gasses through catalyst beds is altered. Improved catalyst lifetimes may be achieved.
摘要翻译： 通过其相应的C3至C5烷烃，C3至C5烯烃及其混合物的气相氧化反应制备不饱和羧酸或不饱和腈的方法，作为烃起始材料，其中监测工艺性能，并且气体通过 催化剂床被改变。 可以实现改进的催化剂寿命。
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公开(公告)号：US5208370A
公开(公告)日：1993-05-04
申请号：US872278
申请日：1992-04-22
CPC分类号： C07C51/50
摘要： The present invention provides a method of reducing the levels of protoanemonin present in aqueous monomer solutions by adding an effective amount of one or more para-phenylenediamines having the formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are the same or different radical selected from hydrogen, methyl, ethyl, n-propyl, iso-propyl, phenyl or methoxyphenyl with the proviso that at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is hydrogen; R.sub.5, R.sub.6, R.sub.7 and R.sub.8 are the same or different radical selected from hydrogen, methyl, ethyl, n-propyl, iso-propyl, methoxy or ethoxy with the proviso that at least one of R.sub.5, R.sub.6, R.sub.7 and R.sub.8 is hydrogen; and salts thereof.
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6.发明授权
公开(公告)号：US5488141A
公开(公告)日：1996-01-30
申请号：US258011
申请日：1994-06-10
CPC分类号： C07C67/60
摘要： This invention is a method for removing certain carbonyl containing impurities from .alpha.,.beta.-unsaturated carboxylic acid ester with an aqueous solution of a bisulfite or dithionite salt.
摘要翻译： 本发明是用亚硫酸氢盐或连二亚硫酸盐水溶液从α，β-不饱和羧酸酯中除去某些含羰基杂质的方法。
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公开(公告)号：US5468899A
公开(公告)日：1995-11-21
申请号：US371176
申请日：1995-01-11
IPC分类号： C07B63/02 , C07C67/60 , C07C69/533 , C07C69/54 , C07C67/48
CPC分类号： C07C67/60
摘要： This invention provides a method for reducing carbonyl-containing impurities in .alpha.,.beta.-unsaturated carboxylic acid esters by treatment of the ester with one or more of a selected phenylenediamine and an acid.
摘要翻译： 本发明提供了通过用一种或多种选择的苯二胺和酸处理酯来还原α，β-不饱和羧酸酯中的含羰基杂质的方法。
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公开(公告)号：US5358611A
公开(公告)日：1994-10-25
申请号：US061873
申请日：1993-05-17
IPC分类号： C07B63/00 , C07C51/487 , C07C57/07
CPC分类号： C07B63/00 , C07C51/487 , Y10S203/22
摘要： A method of reducing the levels of impurities in aqueous monomer solutions is provided. Subjecting aqueous monomer solutions to ultraviolet radiation for from about 2 minutes to about 5 hours, reduces the level of impurities, especially carbonyl-compounds.
摘要翻译： 提供了降低单体水溶液中的杂质含量的方法。 使含水单体溶液经紫外辐射约2分钟至约5小时，降低了杂质，特别是羰基化合物的含量。
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