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公开(公告)号：WO2004052808A3
公开(公告)日：2005-03-10
申请号：PCT/US0337505
申请日：2003-11-20
摘要： A process for the separation of diisobutylene from tertiary butyl alcohol utilizing pressure swing azeotropic distillation to achieve the desired separation. The pressure swing azeotropic distillation takes advantage of the fact that different azeotropes are formed at different pressures. Isobutylene in C4 streams is oligomerized in the presence of tertiary butyl alcohol to produce the diisobutylene. Tertiary butyl alcohol is present in the dimerization because it improves the selectivity to the dimer (diisobutylene) by suppressing further reaction to the trimer or higher. The diisobutylene is separated from the tertiary butyl alcohol utilizing two distillation columns (20, 30). The first distillation is operated at a higher pressure than the second such that the minimum boiling azeotropes of tertiary butyl alcohol and diisobutylene have different concentrations of tertiary butyl alcohol. Diisobutylene is removed as bottoms (107) from the first distillation column and unreacted C4's are removed as overheads (105) at 60-130 psig . A side draw (106) containing the minimum boiling azeotrope is fed to the second distillation column (30), operated at 0-45 psig where a second minimum boiling azeotrope is formed having a lower tertiary butyl alcohol concentration. The tertiary butyl alcohol is recovered as bottoms (109) and recycled to the reactor (10). The second minimum boiling azeotrope is removed as overheads (108) and recycled to the first distillation column (20).
摘要翻译： 利用逆转共沸蒸馏法从叔丁醇中分离二异丁烯以达到理想分离的方法。 变压共沸蒸馏利用了在不同压力下形成不同的共沸物的事实。 C4流中的异丁烯在叔丁醇的存在下被低聚，产生二异丁烯。 通过抑制进一步反应三聚物或更高的三聚体，二元醇存在叔丁醇，因为它提高了对二聚体（二异丁烯）的选择性。 使用两个蒸馏塔（20,30）将二异丁烯与叔丁醇分离。 第一蒸馏在比第二蒸馏更高的压力下操作，使得叔丁醇和二异丁烯的最低沸点共沸物具有不同浓度的叔丁醇。 二异丁烯作为底部（107）从第一蒸馏塔中除去，未反应的C4作为塔顶馏出物（105）以60-130psig除去。 含有最小沸点共沸物的侧馏分（106）被供给到第二蒸馏塔（30），在0-45psig下操作，其中形成具有较低叔丁醇浓度的第二最小沸点共沸物。 将叔丁醇作为塔底物（109）回收并循环至反应器（10）。 将第二最小沸腾共沸物作为塔顶馏出物（108）除去并再循环至第一蒸馏塔（20）。
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22.发明申请PROCESS FOR PRODUCING alpha -L-ASPARTYL-L-PHENYLALANINE METHYLESTER HYDROCHLORIDE 审中-公开生产α-L-苹果酸-L-苯丙氨酸甲酯氢氯化物的方法
公开(公告)号：WO01079264A1
公开(公告)日：2001-10-25
申请号：PCT/KR2001/000604
申请日：2001-04-12
CPC分类号： B01D3/36 , C07K5/0613
摘要： The present invention relates to a process for producing alpha - L-aspartyl-L-phenylalanine methylester hydrochloride from N-protected alpha -L-aspartyl-L-phenylalanine methylester, and the process comprises the steps of; adding toluene, water or toluene/water to the N-protected alpha -L-aspartyl-L-phenylalanine methylester reaction mixture containing acetic acid/toluene, while controlling not to cause layer separation; removing acetic acid and toluene in the reaction mixture by reduced-pressure distillation; then producing alpha -L-aspartyl-L-phenylalanine methylester hydrochloride by adding aqueous hydrochloride and methanol to above obtained syrup or oil state of N-protected alpha -L-aspartyl-L-phenylalanine methylester.
摘要翻译： 本发明涉及由N-保护的α-L-天冬氨酰-L-苯丙氨酸甲酯生产α-天冬氨酰-L-苯丙氨酸甲酯盐酸盐的方法，该方法包括以下步骤： 向含有乙酸/甲苯的N-保护的α-L-天冬氨酰-L-苯丙氨酸甲酯反应混合物中加入甲苯，水或甲苯/水，同时控制不引起层分离; 通过减压蒸馏除去反应混合物中的乙酸和甲苯; 然后通过向上述得到的糖浆或油状态的N-保护的α-L-天冬氨酰基-L-苯丙氨酸甲酯中加入盐酸水溶液和甲醇水溶液产生α-L-天冬氨酰基-L-苯丙氨酸甲酯盐酸盐。
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23.发明申请
公开(公告)号：WO2022266595A1
公开(公告)日：2022-12-22
申请号：PCT/US2022/072875
申请日：2022-06-10
摘要： An environmentally friendly closed loop manufacturing process (101, 102) produces microporous membranes (32) by cast or extrusion of polymer-plasticizer mixtures followed by non-porous film formation (20), extraction (22) of the plasticizer using an azeotrope solvent and thereby forming a solvent-laden sheet and a mixture of plasticizer and azeotrope solvent, distillation (28) of the mixture to separate the plasticizer and azeotrope solvent for reuse, evaporation (30) of the azeotrope solvent from the solvent-laden sheet to form the micropores, and capture of the resultant solvent vapor for subsequent adsorption-desorption of the azeotrope solvent from activated carbon (34) or by vapor condensation (36) for reuse in the manufacturing process. The azeotrope solvent is at least a two-component mixture of solvents, one of which is designed for efficient removal of the plasticizer, while the other component(s) render(s) the azeotrope solvent non-flammable.
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公开(公告)号：WO2021200936A1
公开(公告)日：2021-10-07
申请号：PCT/JP2021/013518
申请日：2021-03-30
申请人： 株式会社トクヤマ
IPC分类号： B01D3/36 , H01L21/027 , H01L21/304
摘要： 高純度イソプロピルアルコールからなる半導体処理液であって、ＳＵＳ３０４製容器内で５０℃、窒素雰囲気下、６０日間保管したときの下記式（１）で表されるオキソラン化合物の濃度が、イソプロピルアルコールに対する質量基準で２５ｐｐｂ以下である半導体処理液、及びその製造方法を提供する。式中、Ｒ１及びＲ２は、それぞれ独立に水素原子又は炭素数１～３のアルキル基を示し、Ｒ１及びＲ２の炭素数の合計は３以下である。Ｒ３は、水素原子又はイソプロピル基を示す。
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25.发明申请
公开(公告)号：WO2020153994A1
公开(公告)日：2020-07-30
申请号：PCT/US2019/047695
申请日：2019-08-22
摘要： A method of desalinating an aqueous composition includes forming a hetero-azeotrope mixture by combining the aqueous composition with an entrainer, the aqueous composition including at least one salt, and subjecting the hetero-azeotrope mixture to distillation at a distillation temperature of less than the boiling temperature of the aqueous composition for an operating distillation pressure, resulting in separating the hetero-azeotrope mixture into a distillation bottoms liquid and a multi-phase condensate. The method includes recovering the multi-phase condensate having an entrainer-rich phase and an aqueous phase, the aqueous phase comprising desalinated water, and removing a portion of the aqueous phase from the multi-phase condensate to recover the desalinated water. Systems for conducting the method of desalinating an aqueous stream are also disclosed.
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公开(公告)号：WO2019005630A1
公开(公告)日：2019-01-03
申请号：PCT/US2018/039132
申请日：2018-06-22
申请人： VITAWORKS IP, LLC
发明人： HU, Songzhou
IPC分类号： C07C227/00 , C07C209/86 , C07C51/48 , C07C51/47 , C07C51/43 , B01D3/36 , B01D11/02 , B01D11/04 , B01D9/02
摘要： There is disclosed a process for the separation of long chain amino acid and long chain dibasic acid, comprising: (1) recovering alkylamine from an aqueous solution of an alkali hydroxide hydrolysis of the mixed amide derivatives by distilling or by extracting with an extractant solvent; (2) cooling the aqueous solution of step (1) to precipitate a mixed alkali salts of long chain amino acid and dibasic acid; (3) recovering the mixed alkali salts of long chain amino acid and dibasic acid to provide a mother liquor; (4) separating long chain amino acid and dibasic acid by acidification-extraction of long chain dibasic acid with an extractant solvent or by selective dissolution of alkali salt of long chain amino acid in an aqueous solvent; and (4) adding an acid to the mother liquor of step (3) to obtain alkanoic acid.
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公开(公告)号：WO2015167784A1
公开(公告)日：2015-11-05
申请号：PCT/US2015/025510
申请日：2015-04-13
申请人： ARKEMA INC.
IPC分类号： B01D3/36 , C07C17/38 , C07C17/383
CPC分类号： B01D3/36 , B01D17/0214 , C07C17/383 , C07C21/18
摘要： The invention relates to a process for separating monochloro-trifluoropropenes such as HCFC-1233 from azeotrope or azeotrope like combinations with HF. The process employs a cold, liquid phase separations and multiple azeotropic distillation trains.
摘要翻译： 本发明涉及从与HF共沸或类似共沸混合物分离一氯三氟丙烯如HCFC-1233的方法。 该方法采用冷，液相分离和多个共沸蒸馏火车。
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28.发明申请
公开(公告)号：WO2013182499A1
公开(公告)日：2013-12-12
申请号：PCT/EP2013/061335
申请日：2013-06-03
摘要： A process and a column configuration for dehydration of an aqueous dilution of a compound forming an azeotrope with water, such as raw grade bioethanol, formic acid or chloroform, to form a concentrate with a concentration above azeotropic level. A preconcentration section (26, 40, 55) with a reboiler (29, 42, 57) and an extractive distillation section (22, 41, 52) are thermally coupled. The aqueous dilution is fed to the preconcentration section, where it is separated into water and a preconcentrate. The water is discharged via the reboiler, and the preconcentrate is fed to the extractive distillation section. A solvent is fed to the extractive distillation section at a higher level than the preconcentrate. In the extractive distillation section the final concentrate is separated from a mixture of the solvent and water.
摘要翻译： 用于使与水等原料级生物乙醇，甲酸或氯仿形成共沸物的化合物的水性稀释液脱水以形成浓度高于共沸水平的浓缩物的方法和柱构造。 具有再沸器（29,42,57）和萃取蒸馏段（22,41,52）的预浓缩段（26,40,55）热耦合。 将水稀释液进料至预浓缩部分，在其中将其分离成水和预浓缩物。 水通过再沸器排出，并将预浓缩物送入萃取蒸馏段。 将溶剂以比预浓缩物更高的水平进料到萃取蒸馏段。 在萃取蒸馏段中，将最终浓缩物与溶剂和水的混合物分离。
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29.发明申请A CONTINUOUS PROCESS FOR PURIFICATION OF 1-CHLORO-2,2,2-TRIFLUOROETHYL DIFLUOROMETHYL ETHER (ISOFLURANE) 审中-公开1-氯-2,2,2-三氟乙基二氟甲基醚（ISOFLURANE）的纯化连续方法
公开(公告)号：WO2013005178A1
公开(公告)日：2013-01-10
申请号：PCT/IB2012/053433
申请日：2012-07-05
发明人： MALI,, Rajendra
CPC分类号： B01D3/36 , C07C41/38 , C07C41/42 , C07C43/123
摘要： The present invention provides a continuous process for purification of crude Isoflurane to yield pure Isoflurane using an entrainer such as water miscible solvent. The solvents, water miscible solvent and water used in the purification process are recycled, making the process commercially viable and environment friendly.
摘要翻译： 本发明提供了使用夹带剂如水混溶性溶剂纯化粗异氟烷以产生纯异氟烷的连续方法。 在纯化过程中使用的溶剂，水混溶性溶剂和水被回收利用，使得该方法具有商业可行性和环境友好性。
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30.发明申请APPARATUS AND PROCESS FOR USING A NITROALKANE AS AN ENTRAINER FOR AZEOTROPIC REMOVAL OF WATER FROM AQUEOUS ACID SOLUTION 审中-公开使用硝酸甘油酯作为水溶液从水溶液中去除水的装置和方法
公开(公告)号：WO2012078725A1
公开(公告)日：2012-06-14
申请号：PCT/US2011/063692
申请日：2011-12-07
申请人： DOW GLOBAL TECHNOLOGIES LLC , ANGUS CHEMICAL COMPANY , SAWANT, Mahesh, Ratnakar , TRAUTH, Daniel, M. , PENDERGAST, John, G.
IPC分类号： C07C201/08 , C07C201/16 , B01D3/36
CPC分类号： B01D3/36 , C07C201/08 , C07C201/16 , C07C205/02
摘要： Disclosed are a process and an apparatus for concentrating an organic acid by using a nitroalkane as an entrainer for the azeotropic removal of water from an aqueous organic acid solution. The nitroalkane may be the same as a nitroalkane that is the product of a high pressure nitration process that produces nitroalkanes and aqueous organic acid.
摘要翻译： 公开了一种通过使用硝基烷烃作为夹带剂浓缩有机酸的方法和装置，用于从有机酸水溶液中共沸除去水。 硝基烷烃可以与硝基烷烃相同，硝基烷烃是产生硝基烷烃和含水有机酸的高压硝化方法的产物。
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