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1.发明公开公开(公告)号：US20230365486A1
公开(公告)日：2023-11-16
申请号：US18312763
申请日：2023-05-05
发明人： JAE WOO LEE , MINYONG LEE
IPC分类号： C07C68/065 , C07C68/08 , B01D3/00 , B01D3/14 , B01D1/28
摘要： Disclosed is a distillation apparatus having a various heat exchange methods added to a process of producing dimethyl carbonate using reactive distillation and pressure-swing distillation. According to the disclosure, internal and external heat integration between a high-pressure and a low-pressure distillation column, which constitute pressure-swing distillation columns, is applied to a dimethyl carbonate production process, and a vapor recompression heat pump configured to compress and heat a fluid and transfer the heat to a fluid having a relatively low temperature is applied to achieve additional heat exchange with a reactive distillation column, thereby improving the dimethyl carbonate production process in terms of energy and economic efficiency by reducing energy consumption while reducing investment and operating costs of a reboiler and a condenser, which are required in a conventional process.
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公开(公告)号：US20230024976A1
公开(公告)日：2023-01-26
申请号：US17786871
申请日：2020-07-29
IPC分类号： C07C68/04 , C07C68/08 , C07C29/152
摘要： Disclosed is a high yield, high selectivity and high conversion method to produce Dimethyl Carbonate (DMC) from carbon dioxide (CO2) and methanol (MeOH) using optimized concentration of ethylene oxide as water scavenger. The method provides an alternative and optimized solution towards the problem of formation of water in DMC synthesis by reporting optimal feed ratio and scavenger to MeOH feed ratio. The disclosure also discloses an optimal pressure condition that could have significant impact on economy of compression of the feed to the DMC reactor.
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公开(公告)号：US10377696B2
公开(公告)日：2019-08-13
申请号：US15539008
申请日：2015-12-24
申请人： POSCO , ENERGY RESEARCH CENTRE OF THE NETHERLANDS , RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
摘要： An apparatus for separating dimethyl carbonate using pervaporation includes: an atmospheric distillation column and a high pressure distillation column distilling a mixture containing dimethyl carbonate and methanol and separating dimethyl carbonate from the mixture; and a pervaporation membrane module disposed between the atmospheric distillation column and the high pressure distillation column and allowing for permeation of the methanol to separate the methanol from the mixture, thereby reducing heat consumption and a process cost as compared to the case of only using an existing pressure swing distillation method.
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公开(公告)号：US10259941B1
公开(公告)日：2019-04-16
申请号：US16180124
申请日：2018-11-05
申请人： National Guard Health Affairs , King Saud bin Abdulaziz University for Health Sciences , King Abdullah International Medical Research Center
发明人： Rabih O. Al-Kaysi
摘要： A method is described for exfoliating a microcrystal of an anthracene derivative by irradiation with short pulses of light having a wavelength of 220-420 nm. The irradiation induces a cis-trans isomerization of the anthracene derivative in a part of the microcrystal, which leads to the separation of an outer layer having a thickness of 200-600 nm. The exfoliated microcrystal may be irradiated again with pulses of light of a same or different wavelength.
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公开(公告)号：US20190062259A1
公开(公告)日：2019-02-28
申请号：US16115192
申请日：2018-08-28
申请人： China Petroleum & Chemical Corporation , Shanghai Research Institute of Petrochemical Technology, SINOPEC
发明人： Weimin Yang , Jun Li , Wenjun He , Junwei Ge , Jiahua Wang , Taikang Fei
摘要： A method for separating dimethyl carbonate from methanol includes subjecting a raw material containing dimethyl carbonate and methanol to extractive distillation, wherein an extractant comprising a compound having a general formula of CH3O(CH2CH2O)nCH3, n being an integer of 2-8, is used in the extractive distillation. The method has the advantages of good separation effect, high product purity, and environmental friendly.
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公开(公告)号：US10179857B1
公开(公告)日：2019-01-15
申请号：US15947426
申请日：2018-04-06
申请人： National Guard Health Affairs , King Saud bin Abdulaziz University for Health Sciences , King Abdullah International Medical Research Center
发明人： Rabih O. Al-Kaysi
摘要： A method is described for exfoliating a microcrystal of an anthracene derivative by irradiation with short pulses of light having a wavelength of 220-420 nm. The irradiation induces a cis-trans isomerization of the anthracene derivative in a part of the microcrystal, which leads to the separation of an outer layer having a thickness of 200-600 nm. The exfoliated microcrystal may be irradiated again with pulses of light of a same or different wavelength.
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7.发明申请公开(公告)号：US20170342017A1
公开(公告)日：2017-11-30
申请号：US15538621
申请日：2015-12-25
申请人： UBE INDUSTRIES, LTD.
发明人： Hirofumi II , Yuya FUKUI , Yohei SHIMASAKI , Koji OKANO , Koji TAKEBAYASHI , Naoto NAKAO
CPC分类号： C07C68/08 , B01D3/009 , B01D3/143 , B01D3/16 , B01D3/343 , B01D3/42 , C07C69/96 , Y02P20/127
摘要： A carbonate ester purification apparatus including a first distillation column in which an alcohol and a first solution containing a carbonate ester and formaldehyde, or a first solution containing a carbonate ester, formaldehyde and an alcohol is supplied to obtain a distillate containing the formaldehyde and the alcohol from a column top part while obtaining a carbonate ester solution with a lower content of formaldehyde than in the first solution from a column bottom part, a reactor having a catalyst for producing an acetal and/or a hemiacetal by reacting the formaldehyde to the alcohol and a reflux part refluxing a fluid containing the acetal and/or the hemiacetal to the first distillation column.
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公开(公告)号：US20170073299A1
公开(公告)日：2017-03-16
申请号：US15309013
申请日：2015-05-05
发明人： Karl-Heinz Köhler , Ricarda Leiberich , Kaspar Hallenberger , Korbinian Krämer , Florian Lipski , Henning Kahnis , Gabriel Denecker , Johan Vanden Eynde , Weerachanan Somhom
CPC分类号： C07C68/02 , B01J31/0271 , B01J2231/49 , B01J2531/002 , C07C68/08 , Y02P20/582 , C07C69/96
摘要： The invention concerns a method for producing diaryl carbonates from monophenols and phosgene or chloroformic acid aryl esters in the presence of an optionally substituted pyridine or the hydrochloride salt thereof as catalyst, and the recovery and reinjection thereof back into the method. The method is carried out at least partially in a liquid phase without the use of an additional solvent, the catalyst being separated by means of crystallization and recovered.
摘要翻译： 本发明涉及在任选取代的吡啶或其盐酸盐作催化剂存在下，从单酚和光气或氯甲酸芳酯生产碳酸二芳基酯的方法，并将其回收和再注入该方法。 该方法至少部分地在液相中进行，而不使用另外的溶剂，催化剂通过结晶分离并回收。
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公开(公告)号：US09518004B2
公开(公告)日：2016-12-13
申请号：US14649369
申请日：2013-12-02
申请人： KANEKA CORPORATION
CPC分类号： C07C69/96 , C07C68/00 , C07C68/08 , C07C2601/08
摘要： A reduced coenzyme Q10 derivative represented by formula (1), wherein R1 and R2 are each independently H or an alkoxycarbonyl group represented by formula (2), and at least one of them is an alkoxycarbonyl group represented by the formula (2); in the formula (2), R3 is an optionally substituted linear, branched, or cyclic alkyl group having 1 to 20 carbon atoms, an optionally substituted aryl group having 6 to 20 carbon atoms, or an optionally substituted heteroaryl group having 4 to 20 carbon atoms, and when R3 is a group substituted with polyethylene glycol, the molecular weight of the polyethylene glycol is not more than 300.
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公开(公告)号：US08207368B2
公开(公告)日：2012-06-26
申请号：US12293693
申请日：2007-04-11
申请人： Steffen Kahlert , Johannes Kaulen , Erasmus Vogl
发明人： Steffen Kahlert , Johannes Kaulen , Erasmus Vogl
IPC分类号： C07C68/08
CPC分类号： C07C68/08 , A23L2/44 , A23L3/3553 , C12H1/14 , C07C69/96
摘要： By using phosphorus compounds, diesters of dicarbonic acid may be stabilized against thermal and chemical decomposition over a relatively long period. Mixtures of diesters of dicarbonic acid and phosphorus compounds are outstandingly suitable for preserving foods.
摘要翻译： 通过使用磷化合物，二碳酸二酯可以在相当长的时间内稳定化，防止热分解和化学分解。 二碳酸和磷化合物二酯的混合物非常适合保存食物。
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