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91.发明授权Separation of salts 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盐
公开(公告)号：US4924027A
公开(公告)日：1990-05-08
申请号：US275827
申请日：1988-11-25
IPC分类号： C07C51/47
CPC分类号： C07C51/47
摘要： Salts of citric acid are separated from a fermentation broth by a two-step process utilizing an adsorbent comprising a water-insoluble, macroreticular gel, weakly basic, anionic exchange resin possessing tertiary amine functional groups or pyridine functional groups, said anionic exchange resin comprising a crosslinked acrylic or styrene resin matrix and a desorbent comprising water or dilute sulfuric acid. The pH of the feed, a fermentation broth, containing citric acid, is adjusted and maintained below the first ionization constant (pKa.sub.1) of citric acid to maintain selectivity in the first step wherein citric acid is adsorbed onto the adsorbent. Then, citric acid is converted to a salt by a reaction with an aqueous alkaline liquid solution and is eluted immediately at the void volume in the alkaline solution.
摘要翻译： 柠檬酸的盐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状凝胶，弱碱性阴离子交换树脂的吸附剂的两步法从发酵液中分离，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和包含水或稀硫酸的解吸剂。 调节饲料的pH，含有柠檬酸的发酵肉汤，并将其保持在柠檬酸的第一电离常数（pKa1）以下，以保持第一步中的选择性，其中柠檬酸被吸附到吸附剂上。 然后，通过与碱性液体水溶液的反应将柠檬酸转化成盐，并在碱性溶液中的空隙体积下立即洗脱。
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92.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。
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公开(公告)号：US4737165A
公开(公告)日：1988-04-12
申请号：US727163
申请日：1985-04-25
CPC分类号： B01D71/70 , B01D59/14 , B01D67/0002 , B01D69/12 , B01D69/141 , B01D2323/12
摘要： A multicomponent membrane which may be used for separating various components which are present in a fluid feed mixture comprises a mixture of a plasticizer such as a glycol and an organic polymer cast upon a porous organic polymer support. The membrane may be prepared by casting an emulsion or a solution of the plasticizer and polymer on the porous support, evaporating the solvent and recovering the membrane after curing.
摘要翻译： 可用于分离存在于流体进料混合物中的各种组分的多组分膜包括增塑剂如二醇和在多孔有机聚合物载体上浇铸的有机聚合物的混合物。 膜可以通过将增塑剂和聚合物的乳液或溶液浇铸在多孔载体上，蒸发溶剂并在固化后回收膜来制备。
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公开(公告)号：US4608060A
公开(公告)日：1986-08-26
申请号：US723398
申请日：1985-04-15
CPC分类号： B01D69/141 , B01D67/0002 , B01D69/12 , B01D2323/12
摘要： Polar gases such as hydrogen sulfide, sulfur dioxide and ammonia may be separated from nonpolar gases such as methane, nitrogen, hydrogen or carbon dioxide by passing a mixture of polar and nonpolar gases over the face of a multicomponent membrane at separation conditions. The multicomponent membrane which is used to effect the separation will comprise a mixture of a glycol plasticizer having a molecular weight of from about 200 to about 600 and an organic polymer cast on a porous support. The use of such membranes as exemplified by polyethylene glycol and silicon rubber composited on polysulfone will permit greater selectivity accompanied by a high flux rate in the separation process.
摘要翻译： 通过在分离条件下将极性和非极性气体的混合物通过多组分膜的表面，可以将极性气体如硫化氢，二氧化硫和氨与非极性气体如甲烷，氮气，氢气或二氧化碳分离。 用于进行分离的多组分膜将包含分子量为约200至约600的二醇增塑剂和多孔载体上浇铸的有机聚合物的混合物。 在聚砜上复合的聚乙二醇和硅橡胶所示的这种膜的使用将允许在分离过程中伴随着高通量速率的更大的选择性。
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公开(公告)号：US4486618A
公开(公告)日：1984-12-04
申请号：US522759
申请日：1983-08-12
CPC分类号： C10G25/003 , C07C7/13
摘要： A process for separating a normal C.sub.6 olefin hydrocarbon from a mixture of the same with a C.sub.6 olefin branched chain and/or cyclic hydrocarbon. The process comprises contacting the mixture at separation conditions with a molecular sieve comprising a crystalline silica. The normal C.sub.6 olefin hydrocarbon is selectively retained and will be recovered from the molecular sieve by displacement with a displacement material comprising pentene-1 or butene-1. The process preferably employs a simulated moving bed.
摘要翻译： 从C 6烯烃支链和/或环状烃与其混合物中分离正常C 6烯烃的方法。 该方法包括在分离条件下将混合物与包含结晶二氧化硅的分子筛接触。 选择性地保留正常的C 6烯烃，并通过用包含戊烯-1或丁烯-1的置换材料置换而从分子筛中回收。 该方法优选采用模拟移动床。
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公开(公告)号：US4475954A
公开(公告)日：1984-10-09
申请号：US485350
申请日：1983-04-15
CPC分类号： C13B20/148
摘要： Sucrose which is found in thick juice such as obtained from sugar beet or sugar cane may be selectively extracted therefrom by passing an aqueous solution of the thick juice over a solid adsorbent comprising a stabilized type Y zeolite such as Union Carbide Corporation LZ-Y20 adsorbent, preferably bound with a water permeable organic polymer. The sucrose will be selectively adsorbed thereon and separated from other thick juice ingredients such as raffinose, KCl and betaine. The sucrose is then removed from the adsorbent by treatment with a desorbent material comprising an alcohol. The desorbent is flushed from the adsorbent with water prior to the subsequent contact of the adsorbent with the feed stream.
摘要翻译： 可以通过将稠汁的水溶液通过包含稳定型Y沸石的固体吸附剂（例如Union Carbide Corporation LZ-Y20吸附剂）来选择性地从其中提取从糖甜菜或甘蔗获得的浓汁中的蔗糖， 优选与水可渗透的有机聚合物结合。 蔗糖将被选择性地吸附在其上并与其他浓汁成分如棉子糖，KCl和甜菜碱分离。 然后通过用包含醇的解吸材料处理从吸附剂中除去蔗糖。 在吸附剂随后与进料流接触之前，将解吸剂从吸附剂中冲洗。
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97.发明授权
公开(公告)号：US4406819A
公开(公告)日：1983-09-27
申请号：US360098
申请日：1982-03-19
CPC分类号： C13B20/148 , B01D15/08 , B01J20/183 , C13K13/007
摘要： This invention relates to an improved adsorbent comprising a crystalline aluminosilicate, method of manufacture of the adsorbent and improved process for separating a component from a feed mixture comprising an aqueous solution of a mixture of different components, such as a mixture of saccharides. In the process the mixture is contacted with the adsorbent, which selectively adsorbs a component from the feed mixture. The adsorbed component is then recovered by contacting the adsorbent with a desorbent material such as water to effect the desorption of the adsorbed component from the adsorbent. There is an undesirable tendency for the silicon constituent of the crystalline aluminosilicate to dissolve in the aqueous system. The improvement to the adsorbent and process comprises the incorporation of a binder material in the adsorbent comprising a cellulose ether which substantially reduces the undesirable dissolution. The adsorbent is manufactured by mixing together powder of the crystalline aluminosilicate, powders of the binder, and a liquid organic solvent, extruding the mixture into an extrudate and drying the extrudate.
摘要翻译： 本发明涉及包含结晶硅铝酸盐的改进的吸附剂，制备吸附剂的方法和用于从包含不同组分的混合物的水溶液如糖的混合物的进料混合物中分离组分的改进方法。 在该过程中，混合物与吸附剂接触，吸附剂从进料混合物中选择性吸附组分。 然后通过使吸附剂与解吸材料如水接触来回收吸附的组分，以实现吸附组分从吸附剂的解吸附。 结晶硅铝酸盐的硅成分溶解在水性体系中是不希望的。 对吸附剂和方法的改进包括在包含纤维素醚的吸附剂中引入粘合剂材料，其基本上减少不期望的溶解。 吸附剂通过将结晶硅铝酸盐的粉末，粘合剂的粉末和液体有机溶剂混合在一起来制造，将混合物挤出成挤出物并干燥挤出物。
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公开(公告)号：US4404145A
公开(公告)日：1983-09-13
申请号：US407672
申请日：1982-08-12
摘要： This invention comprises a process for separating a fatty acid from a mixture comprising a fatty acid and a rosin acid, which process comprises contacting the mixture at separation conditions with a molecular sieve comprising silicalite, thereby selectively retaining the fatty acid. The fatty acid may be recovered from the molecular sieve by displacement with a displacement fluid. It is preferred that the displacement fluid comprise a liquid having a minimum polarity index.
摘要翻译： 本发明包括从包含脂肪酸和松香酸的混合物中分离脂肪酸的方法，该方法包括使分离条件下的混合物与包含硅沸石的分子筛接触，从而选择性地保留脂肪酸。 脂肪酸可以通过用置换流体置换从分子筛中回收。 优选地，排量流体包括具有最小极性指数的液体。
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公开(公告)号：US4382001A
公开(公告)日：1983-05-03
申请号：US316363
申请日：1981-10-29
摘要： An adsorptive separation process for separating ethanol from a feed mixture comprising ethanol and water, which process comprises contacting the feed mixture with an adsorbent comprising activated carbon, selectively adsorbing substantially all of the ethanol to be separated to the substantial exclusion of the water and thereafter recovering high purity ethanol. A desorption step is used to desorb the adsorbed ethanol with the desorbent selected being capable of direct blending into motor fuel.
摘要翻译： 一种用于从包含乙醇和水的进料混合物中分离乙醇的吸附分离方法，该方法包括使进料混合物与包含活性炭的吸附剂接触，所述吸附剂基本上吸附要分离的基本上所有的乙醇以实质上排除水，然后回收 高纯度乙醇。 使用解吸步骤解吸吸附的乙醇，所选择的解吸剂能够直接混合到马达燃料中。
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公开(公告)号：US4372876A
公开(公告)日：1983-02-08
申请号：US353683
申请日：1982-03-01
CPC分类号： C13B20/123 , B01D15/08 , B01J20/183 , C13K13/007
摘要： An improved adsorbent comprising a crystalline aluminosilicate, method of manufacture of the adsorbent and improved process for separating a component from a feed mixture comprising an aqueous solution of a mixture of different components, such as a mixture of saccharides. In the process the mixture is contacted with the adsorbent, which selectively adsorbs a component from the feed mixture. The adsorbed component is then recovered by contacting the adsorbent with a desorbent material such as water to effect the desorption of the adsorbed component from the adsorbent. There is an undesirable tendency for the silicon constituent of the crystalline aluminosilicate to dissolve in the aqueous system. The improvement to the adsorbent and process comprises the coating of the adsorbent with ethylcellulose which substantially reduces the undeirable dissolution. The adsorbent is manufactured by mixing together the uncoated precursor of the adsorbent with the organic polymer dissolved in a liquid organic solvent, and removing the solvent.
摘要翻译： 一种改进的吸附剂，包括结晶硅铝酸盐，制造吸附剂的方法和用于从包含不同组分的混合物的水溶液如糖的混合物的进料混合物中分离组分的改进方法。 在该过程中，混合物与吸附剂接触，吸附剂从进料混合物中选择性吸附组分。 然后通过使吸附剂与解吸材料如水接触来回收吸附的组分，以实现吸附组分从吸附剂的解吸附。 结晶硅铝酸盐的硅成分溶解在水性体系中是不希望的。 对吸附剂和方法的改进包括用乙基纤维素涂覆吸附剂，其基本上降低了不可取的溶解度。 吸附剂通过将未涂覆的吸附剂前体与溶解在液体有机溶剂中的有机聚合物混合在一起并除去溶剂来制造。
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