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公开(公告)号：US5488156A
公开(公告)日：1996-01-30
申请号：US363662
申请日：1994-12-23
IPC分类号： C07C51/42 , C07C51/487 , C12P7/56
CPC分类号： C12P7/56 , C07C51/42 , C07C51/487
摘要： Lactic acid formed via fermentation generally is susceptible to the development of color bodies when heated to temperatures of approximately 180.degree. C. and above. Color development appears to result from carbonization of small amounts of carbohydrates. Consequently a heat-stable lactic acid may be produced by subjecting an aqueous solution of lactic acid to temperatures between about 180 and 230.degree. C. for a time sufficient to carbonize the carbohydrates, with subsequent removal of the color bodies using standard decolorants such as activated charcoal. Heat treatment may be applied either directly to the broth or to an aqueous solution resulting from one or more processing steps applied to the fermentation broth.
摘要翻译： 通过发酵形成的乳酸通常在加热至约180℃及以上的温度时容易发色。 颜色发展似乎是由于少量碳水化合物的碳化所致。 因此，可以通过使乳酸水溶液在约180℃和230℃之间的温度下进行足以碳化碳水化合物的时间，然后用标准的脱色剂如活化的 木炭。 热处理可以直接施用到肉汤或由应用于发酵液的一个或多个加工步骤产生的水溶液。
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公开(公告)号：US08283511B2
公开(公告)日：2012-10-09
申请号：US12749817
申请日：2010-03-30
IPC分类号： C07C7/12
CPC分类号： C10G25/08 , C07C4/06 , C07C7/13 , C10G9/36 , C10G25/06 , C10G55/04 , C10G61/06 , C10G63/08 , C10G2300/4081 , C10G2300/807 , C10G2400/02 , C10G2400/20 , C10G2400/30 , Y02P30/464 , C07C11/04 , C07C9/15
摘要： A simulated moving bed adsorptive separation process for preparing the separate feed streams charged to naphtha reforming unit and a steam cracking unit has been developed. The feed stream to the overall unit is passed into the adsorptive separation unit. The desorbent in the adsorptive separation is C12 hydrocarbons. The simulated moving bed adsorptive separation separates the components of the feed stream into a normal paraffin stream, which is charged to the steam cracking process, and non-normal hydrocarbons which are passed into a reforming zone. The desorbent is readily separated from the normal paraffin stream and from the non-normal paraffin stream and the simulated moving bed adsorption zone is operated at an A/Fn ratio of from about 0.90 to about 0.92.
摘要翻译： 已经开发了用于制备装载到石脑油重整单元和蒸汽裂解装置的单独进料流的模拟移动床吸附分离方法。 到整个单元的进料流被送入吸附分离单元。 吸附分离中的解吸剂是C12烃。 模拟的移动床吸附分离将进料流的组分分离成正常的石蜡流，将其装入蒸汽裂解过程，并将非正常烃进入重整区。 解吸剂容易地与正链烷烃流和非正构链烷烃流分离，并且模拟移动床吸附区以约0.90至约0.92的A / Fn比操作。
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3.发明授权Processes for olefin/paraffin separation utilizing porous, hydrophobic poly(ether ether ketone) membranes 有权使用多孔疏水性聚（醚醚酮）膜进行烯烃/石蜡分离的方法公开(公告)号：US08203028B2
公开(公告)日：2012-06-19
申请号：US12788595
申请日：2010-05-27
申请人： Santi Kulprathipanja , Chunqing Liu
发明人： Santi Kulprathipanja , Chunqing Liu
IPC分类号： C07C7/144
摘要： Processes for olefin/paraffin separation utilizing porous, hydrophobic poly(ether ether ketone) (PEEK) membranes are provided. In accordance with an exemplary embodiment, a process for olefin/paraffin separation comprises providing a porous membrane formed of PEEK polymer functionalized with hydrophobic groups, the porous membrane having a first surface and a second surface. The first surface of the porous membrane is contacted with a feed comprising an olefin and a paraffin and a permeate is caused to flow from the second surface of the porous membrane. The permeate has a concentration of the paraffin that is higher than a concentration of the paraffin of the feed.
摘要翻译： 提供利用多孔疏水性聚（醚醚酮）（PEEK）膜的烯烃/石蜡分离方法。 根据示例性实施方案，烯烃/石蜡分离方法包括提供由疏水基官能化的PEEK聚合物形成的多孔膜，所述多孔膜具有第一表面和第二表面。 多孔膜的第一表面与包含烯烃和石蜡的进料接触，使渗透物从多孔膜的第二表面流出。 渗透物的石蜡浓度高于饲料中石蜡的浓度。
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4.发明授权Crosslinked organic-inorganic hybrid membranes and their use in gas separation 有权交联的有机 - 无机杂化膜及其在气体分离中的应用公开(公告)号：US08030399B2
公开(公告)日：2011-10-04
申请号：US12847067
申请日：2010-07-30
IPC分类号： C08B37/00
CPC分类号： C08L1/20 , B01D53/228 , B01D67/0079 , B01D71/00 , B01D71/16 , B01D71/52 , B01D71/70 , B01D2257/102 , B01D2257/504 , C08B7/00 , C08G65/33306 , C08G65/33351 , C08G65/336 , C08G2650/58 , C08L71/02 , Y02C10/10 , Y02P20/152
摘要： The present invention is for crosslinked membranes and in particular for crosslinked poly(ethylene oxide)-cellulose acetate-silsesquioxane (PEO-CA-Si) organic-inorganic hybrid membranes and their use in gas separation. These crosslinked PEO-CA-Si membranes were prepared by in-situ sol-gel co-condensation of crosslinkable PEO-organotrialkoxysilane and CA-organotrialkoxysilane polymers in the presence of acetic acid catalyst during the formation of membranes. The crosslinkable PEO- and CA-organotrialkoxysilane polymers were synthesized via the reaction between the hydroxyl groups on PEO (or on CA) and the isocyanate on organotrialkoxysilane to form urethane linkages under mild conditions. The crosslinked PEO-CA-Si membranes exhibited both increased selectivity of CO2/N2 and CO2 permeability as compared to a CA membrane, suggesting that these membranes are very promising for gas separations such as CO2/N2 separation.
摘要翻译： 本发明涉及交联膜，特别是交联聚（环氧乙烷） - 醋酸纤维素 - 倍半硅氧烷（PEO-CA-Si）有机 - 无机混合膜及其在气体分离中的应用。 这些交联的PEO-CA-Si膜通过在形成膜期间在乙酸催化剂存在下通过可交联的PEO-有机三烷氧基硅烷和CA-有机三烷氧基硅烷聚合物的原位溶胶 - 凝胶共缩合制备。 通过PEO（或CA）上的羟基与有机三烷氧基硅烷上的异氰酸酯之间的反应合成可交联PEO-和CA-有机三烷氧基硅烷聚合物，以在温和条件下形成氨基甲酸酯键。 与CA膜相比，交联的PEO-CA-Si膜显示出增加的CO 2 / N 2选择性和CO 2渗透性，这表明这些膜对于气体分离如CO 2 / N 2分离是非常有希望的。
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5.发明申请CROSSLINKED ORGANIC-INORGANIC HYBRID MEMBRANES AND THEIR USE IN GAS SEPARATION 有权交联有机无机混合膜及其在气体分离中的应用公开(公告)号：US20100288122A1
公开(公告)日：2010-11-18
申请号：US12847067
申请日：2010-07-30
IPC分类号： B01D53/22
CPC分类号： C08L1/20 , B01D53/228 , B01D67/0079 , B01D71/00 , B01D71/16 , B01D71/52 , B01D71/70 , B01D2257/102 , B01D2257/504 , C08B7/00 , C08G65/33306 , C08G65/33351 , C08G65/336 , C08G2650/58 , C08L71/02 , Y02C10/10 , Y02P20/152
摘要： The present invention is for crosslinked membranes and in particular for crosslinked poly(ethylene oxide)-cellulose acetate-silsesquioxane (PEO-CA-Si) organic-inorganic hybrid membranes and their use in gas separation. These crosslinked PEO-CA-Si membranes were prepared by in-situ sol-gel co-condensation of crosslinkable PEO-organotrialkoxysilane and CA-organotrialkoxysilane polymers in the presence of acetic acid catalyst during the formation of membranes. The crosslinkable PEO- and CA-organotrialkoxysilane polymers were synthesized via the reaction between the hydroxyl groups on PEO (or on CA) and the isocyanate on organotrialkoxysilane to form urethane linkages under mild conditions. The crosslinked PEO-CA-Si membranes exhibited both increased selectivity of CO2/N2 and CO2 permeability as compared to a CA membrane, suggesting that these membranes are very promising for gas separations such as CO2/N2 separation.
摘要翻译： 本发明涉及交联膜，特别是交联聚（环氧乙烷） - 醋酸纤维素 - 倍半硅氧烷（PEO-CA-Si）有机 - 无机混合膜及其在气体分离中的应用。 这些交联的PEO-CA-Si膜通过在形成膜期间在乙酸催化剂存在下通过可交联的PEO-有机三烷氧基硅烷和CA-有机三烷氧基硅烷聚合物的原位溶胶 - 凝胶共缩合制备。 通过PEO（或CA）上的羟基与有机三烷氧基硅烷上的异氰酸酯之间的反应合成可交联PEO-和CA-有机三烷氧基硅烷聚合物，以在温和条件下形成氨基甲酸酯键。 与CA膜相比，交联的PEO-CA-Si膜显示出增加的CO 2 / N 2选择性和CO 2渗透性，这表明这些膜对于气体分离如CO 2 / N 2分离是非常有希望的。
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6.发明申请BINDERLESS ADSORBENTS COMPRISING NANO-SIZE ZEOLITE X AND THEIR USE IN THE ADSORPTIVE SEPARATION OF PARA-XYLENE 审中-公开包含纳米级沸石X的无粘性吸附剂及其在PARA-XYLENE的吸附分离中的用途公开(公告)号：US20090326308A1
公开(公告)日：2009-12-31
申请号：US12165329
申请日：2008-06-30
申请人： Santi Kulprathipanja , Richard Willis , Dorothy Kuechl , Jim Priegnitz , Jack Hurst , Scott Commissaris , Linda Cheng
发明人： Santi Kulprathipanja , Richard Willis , Dorothy Kuechl , Jim Priegnitz , Jack Hurst , Scott Commissaris , Linda Cheng
CPC分类号： B01J20/186 , B01J20/183 , B01J20/28007 , B01J2220/42 , B82Y30/00 , C07C7/12 , C07C15/08
摘要： Adsorbents and methods for the adsorptive separation of para-xylene from a mixture containing at least one other C8 aromatic hydrocarbon (e.g., a mixture of ortho-xylene, meta-xylene, para-xylene, and ethylbenzene) are described. Suitable adsorbents comprise nano-size zeolite X having an average crystallite size of less than about 500 nanometers. The adsorbents provide both improved capacity and mass transfer, which is especially advantageous for improving productivity in low temperature, low cycle time adsorptive separation operations in a simulated moving bed mode.
摘要翻译： 描述了从含有至少一种其它C 8芳族烃（例如邻二甲苯，间二甲苯，对二甲苯和乙苯的混合物）的混合物吸附分离对二甲苯的吸附剂和方法。 合适的吸附剂包括平均微晶尺寸小于约500纳米的纳米尺寸沸石X. 吸附剂提供改进的容量和质量传递，这特别有利于在模拟移动床模式中提高低温，低循环时间吸附分离操作的生产率。
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公开(公告)号：US07128829B1
公开(公告)日：2006-10-31
申请号：US10447752
申请日：2003-05-29
CPC分类号： C10G25/003 , C10G25/05 , C10G29/16
摘要： A novel process effective for the removal of organic sulfur compounds, organic nitrogen compounds and light olefins from liquid hydrocarbons is disclosed. The process more specifically addresses the removal of these contaminants from aromatic compounds including benzene and toluene and from naphtha. The liquid hydrocarbons are contacted with a blend of at least one metal oxide and an acidic zeolite. Preferably, the metal oxide comprises nickel oxide and molybdenum oxide and the acidic zeolite is acidic stabilized zeolite Y. This blend has a significant capacity for adsorption of impurities and can be regenerated by oxidative treatment.
摘要翻译： 公开了一种有效从液态烃中去除有机硫化合物，有机氮化合物和轻质烯烃的新方法。 该方法更具体地涉及从芳族化合物（包括苯和甲苯）和石脑油中除去这些污染物。 液体烃与至少一种金属氧化物和酸性沸石的共混物接触。 优选地，金属氧化物包括氧化镍和氧化钼，酸性沸石是酸性稳定的沸石Y.该共混物具有显着的吸附杂质的能力，可以通过氧化处理再生。
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公开(公告)号：US07102044B1
公开(公告)日：2006-09-05
申请号：US10882887
申请日：2004-06-30
IPC分类号： C07C2/64
摘要： The present invention comprises a process for removal of oxygenates from a paraffin-rich or olefin-rich paraffin stream which comprises passing a feed stream, comprising one or more C10 to C15 feed paraffins or C10 to C15 olefin-rich paraffin stream and one or more oxygenates through an adsorbent bed comprising one or more adsorbents selected from silica gel, activated alumina and sodium x zeolites to remove essentially all of said oxygenates; and recovering said paraffins. A second adsorbent bed may be employed to more thoroughly remove these oxygenates.
摘要翻译： 本发明包括从富含链烷烃或富烯烃的石蜡流中除去含氧化合物的方法，该方法包括将含有一个或多个C 10的进料流通入C 15 通过吸附床将含有一种或多种选自硅胶，活性氧化铝和吸附剂的吸附剂的烷烃或C 10向富含C 15的富烯烃链烷烃流和一种或多种含氧化合物进料， 钠x沸石以除去基本上所有的含氧化合物; 并回收所述石蜡。 可以使用第二吸附剂床来更彻底地除去这些含氧化合物。
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9.发明授权公开(公告)号：US06190562B1
公开(公告)日：2001-02-20
申请号：US09275198
申请日：1999-03-24
IPC分类号： B01D1500
CPC分类号： B01D15/00 , B01J20/0222 , B01J20/0292 , B01J20/06 , B01J39/12
摘要： For the removal of trace quantities of iodine-containing contaminants from corrosive liquid feed streams, an alternative with distinct advantages over the prior art is provided. The treatment method involves the use of a crystalline manganese phosphate which has been cation-exchanged with an iodine-reactive metal. This inorganic adsorbent may be used in unbound form, or it can bound with a substantially insoluble porous inorganic refractory metal oxide binder. A reactivation technique for this material is also presented.
摘要翻译： 为了从腐蚀性液体进料流中除去痕量的含碘污染物，提供了与现有技术相比具有明显优点的替代方案。 该处理方法涉及使用与碘反应性金属进行阳离子交换的结晶磷酸锰。 该无机吸附剂可以以未结合的形式使用，也可以与基本上不溶的多孔无机难熔金属氧化物粘合剂结合。 还介绍了这种材料的再活化技术。
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10.发明授权Continuous alkylation of aromatics using solid catalysts; prevention of catalyst deactivation using a pulsed feed reactor 失效使用固体催化剂连续烷基化芳烃; 使用脉冲进料反应器防止催化剂失活
公开(公告)号：US5648579A
公开(公告)日：1997-07-15
申请号：US392006
申请日：1995-02-21
IPC分类号： C07C2/66 , C07C15/067
CPC分类号： C07C2/66 , C07C2521/12 , C07C2521/16 , C07C2529/06
摘要： A novel continuous process for the preparation of alkylated benzenes effected by solid catalysts which become deactivated under alkylation conditions uses a single catalyst zone for both reaction and catalyst flushing to prevent deactivation. The process utilizes a pulsed flow of the linear monoolefins into the catalyst zone during a reaction cycle with benzene acting as a desorbent for catalyst deactivating agents to prevent significant catalyst deactivation. The process can be generalized to encompass many types of reactions.
摘要翻译： 通过在烷基化条件下失活的固体催化剂制备烷基化苯的新型连续方法使用单一催化剂区域用于反应和催化剂冲洗以防止失活。 该方法在与作为催化剂失活剂的解吸剂的苯的反应循环期间利用脉冲流动的线性单烯烃进入催化剂区域，以防止显着的催化剂失活。 该过程可以被概括为包括许多类型的反应。
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