Separation of an organic acid from a fermentation broth with an anionic
polymeric adsorbent
    1.
    发明授权
    Separation of an organic acid from a fermentation broth with an anionic polymeric adsorbent 失效
    用阴离子聚合物吸附剂从发酵液中分离有机酸

    公开(公告)号:US5068419A

    公开(公告)日:1991-11-26

    申请号:US349273

    申请日:1989-05-08

    IPC分类号: C07C51/47 C07C51/42

    CPC分类号: C07C51/47

    摘要: An organic acid is separated from a fermentation broth by using an adsorbent comprising a water-insoluble macroreticular or gel weakly basic anionic exchange resin possessing tertiary amine or pyridine functional groups or a strongly basic anionic exchange resin possessing quaternary amine functional groups. The resins are in sulfate form and have a cross-linked acrylic or styrene resin matrix. The organic acid is desorbed with water or dilute inorganic acid, e.g., sulfuric. The pH of the feed is maintained below the first ionization constant (pKa.sub.1) of the organic acid to obtain high selectivity.

    摘要翻译: 通过使用包含具有叔胺或吡啶官能团的水不溶性大网络或凝胶弱碱性阴离子交换树脂的吸附剂或具有季胺官能团的强碱性阴离子交换树脂,将有机酸与发酵液分离。 树脂为硫酸盐形式,并具有交联的丙烯酸或苯乙烯树脂基质。 有机酸用水或稀无机酸例如硫酸解吸。 饲料的pH保持低于有机酸的第一电离常数(pKa1),以获得高选择性。

    Separation of citric acid from fermentation broth with a weakly basic
anionic exchange resin adsorbent
    5.
    发明授权
    Separation of citric acid from fermentation broth with a weakly basic anionic exchange resin adsorbent 失效
    用弱碱性阴离子交换树脂吸附剂从发酵液中分离柠檬酸

    公开(公告)号:US4851573A

    公开(公告)日:1989-07-25

    申请号:US121830

    申请日:1987-11-16

    IPC分类号: C07C51/47

    CPC分类号: C07C51/47

    摘要: Citric acid is separated from a fermentation broth by using an adsorbent comprising a water-insoluble macroreticular or gel weakly basic anionic exchange resin possessing tertiary amine functional groups or pyridine functional groups, said anionic exchange resin comprising a cross-linked acrylic or styrene resin matrix. Citric acid is desorbed by water or dilute sulfuric acid. The pH of the feed is maintained below the first ionization constant (pKa.sub.1) of citric acid to maintain selectivity.

    摘要翻译: 通过使用包含具有叔胺官能团或吡啶官能团的水不溶性大网络或凝胶弱碱性阴离子交换树脂的吸附剂将柠檬酸与发酵液分离,所述阴离子交换树脂包含交联的丙烯酸或苯乙烯树脂基质。 柠檬酸被水或稀硫酸解吸。 饲料的pH值保持在柠檬酸的第一电离常数(pKa1)以下以保持选择性。

    Separation of lactic acid from fermentation broth with an anionic
polymeric absorbent
    6.
    发明授权
    Separation of lactic acid from fermentation broth with an anionic polymeric absorbent 失效
    用阴离子聚合物吸收剂从发酵液中分离乳酸

    公开(公告)号:US5068418A

    公开(公告)日:1991-11-26

    申请号:US349272

    申请日:1989-05-08

    IPC分类号: C07C51/47

    CPC分类号: C07C51/47

    摘要: Lactic acid is separated from a fermentation broth by using an adsorbent comprising a water-insoluble macroreticular or gel weakly basic anionic exchange resin possessing tertiary amine or pyridine functional groups or a strongly basic anionic exchange resin possessing quaternary amine fuctional groups. The resins are in sulfate form and have a cross-linked acrylic or styrene resin matrix. Lactic acid is desorbed with water or dilute inorganic acid, e.g., sulfuric. The pH of the feed is maintained below the ionization constant (pKa) of lactic acid to obtain high selectivity.

    摘要翻译: 通过使用包含具有叔胺或吡啶官能团的水不溶性大网络或凝胶弱碱性阴离子交换树脂的吸附剂或具有季胺官能团的强碱性阴离子交换树脂,将乳酸与发酵液分离。 树脂为硫酸盐形式,并具有交联的丙烯酸或苯乙烯树脂基质。 乳酸用水或稀释的无机酸如硫酸解吸。 饲料的pH值保持在乳酸的电离常数(pKa)以下,以获得高选择性。

    Ethylene production by steam cracking of normal paraffins
    7.
    发明授权
    Ethylene production by steam cracking of normal paraffins 有权
    乙烯生产通过蒸汽裂解正链烷烃

    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

    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。

    Processes for olefin/paraffin separation utilizing porous, hydrophobic poly(ether ether ketone) membranes
    8.
    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

    IPC分类号: C07C7/144

    CPC分类号: C07C7/144 C07C9/00 C07C11/00

    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。

    Crosslinked organic-inorganic hybrid membranes and their use in gas separation
    9.
    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

    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。

    CROSSLINKED ORGANIC-INORGANIC HYBRID MEMBRANES AND THEIR USE IN GAS SEPARATION
    10.
    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

    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。