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公开(公告)号：US2401444A
公开(公告)日：1946-06-04
申请号：US42812142
申请日：1942-01-24
发明人： WELLING CHARLES E
CPC分类号： C07C5/08 , C07C7/167 , C07C2521/02 , C07C2521/08 , C07C11/02
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公开(公告)号：US11976039B2
公开(公告)日：2024-05-07
申请号：US17430302
申请日：2020-11-09
申请人： LG CHEM, LTD.
发明人： Sung June Hwang , Tae Woo Kim , Sung Kyu Lee
摘要： Method of producing aromatic hydrocarbons including: supplying a raw material stream to a C6 separation column, supplying an upper discharge stream from the C6 separation column to a first gasoline hydrogenation unit, and supplying a lower discharge stream from the C6 separation column to a C7 separation column; supplying an upper discharge stream from the C7 separation column to a hydrodealkylation reaction unit and supplying a lower discharge stream from the C7 separation column to a C8 separation column; separating benzene from discharged streams from the first gasoline hydrogenation unit and the hydrodealkylation reaction unit; removing a lower discharge stream from the C8 separation column and supplying an upper discharge stream from the C8 separation column to a second extractive distillation column; and separating styrene from a lower discharge stream of the second extractive distillation column and separating xylene from an upper discharge stream of the second extractive distillation column.
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公开(公告)号：US11731924B2
公开(公告)日：2023-08-22
申请号：US17621945
申请日：2020-06-08
发明人： Hangyao Wang , Lin Luo , Yu Liu , Matthew T. Pretz , Andrzej Malek
CPC分类号： C07C7/167 , B01D3/14 , B01D45/16 , B01J23/62 , C07C4/04 , C07C5/3337 , C07C7/005 , C07C7/04 , C07C2523/62
摘要： A method for operating an acetylene hydrogenation unit of a steam cracking system that integrates a fluidized catalytic dehydrogenation (FCDh) effluent from a fluidized catalytic dehydrogenation (FCDh) system may include separating a cracked gas from the steam cracking system into at least a hydrogenation feed comprising at least acetylene, CO, and hydrogen, introducing the FCDh effluent to the separation system, combining the FCDh effluent with the cracked gas upstream of the separation system, or both. The method may include hydrogenating acetylene in the hydrogenation feed. Elevated CO concentration in the hydrogenation feed due to the FCDh effluent may reduce a reaction rate of acetylene hydrogenation. The acetylene hydrogenation unit may operate at an elevated temperature relative to normal operating temperatures when the portion of the FCDh effluent is not integrated, such that a concentration of acetylene in the hydrogenated effluent is less than a threshold acetylene concentration.
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公开(公告)号：US20220227687A1
公开(公告)日：2022-07-21
申请号：US17621919
申请日：2020-06-08
发明人： Lin Luo , Hangyao Wang , Yu Liu , Matthew T. Pretz , Andrzej Malek
摘要： A method for operating an acetylene hydrogenation unit in an integrated steam cracking-fluidized catalytic dehydrogenation (FCDh) system may include separating a cracked gas from a steam cracking system and an FCDh effluent from an FCDh system into a hydrogenation feed and an acetylene-depleted stream, the hydrogenation feed comprising at least hydrogen, CO, and acetylene. During normal operating conditions, at least 20% of the CO in the hydrogenation feed is from the cracked gas. The method may include contacting the hydrogenation feed with an acetylene hydrogenation catalyst to hydrogenate at least a portion of the acetylene in the hydrogenation feed to produce a hydrogenated effluent. The steam cracking is operated under conditions that increase CO production such that a concentration of CO in the cracked gas is great enough that when a flowrate of the FCDh effluent is zero, a CO concentration in the hydrogenation feed is at least 100 ppmv.
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公开(公告)号：US20220153661A1
公开(公告)日：2022-05-19
申请号：US17439032
申请日：2020-03-04
申请人： LINDE GmbH
发明人： Helmut FRITZ , Andreas MEISWINKEL , Martin SCHUBERT , Mathieu ZELLHUBER , Nicole SCHÖDEL , Sonja SCHULTE , Anina WÖHL
摘要： A process (100) is proposed for the production of one or more olefins, in which a reaction feed containing oxygen and one or more paraffins is formed and in which a part of the oxygen in the reaction feed is reacted with a part of the one or more paraffins to form the one or more olefins by an oxidative process, to obtain a process gas, the process gas containing at least the unreacted part of the one or more paraffins and oxygen, the one or more olefins, one or more acetylenes, carbon dioxide and water. The process comprises subjecting the process gas or a gas mixture formed using at least a part of the process gas partially or completely to a condensate separation (2), a compression (3), an at least partial removal (4) of the oxygen and acetylene(s) and to one or more stages of a carbon dioxide removal (5) in the order given herein, wherein the at least partial removal (4) of the oxygen and of the acetylene(s) is performed at the same time and by a catalytic conversion using a catalyst comprising copper oxide or ruthenium, and wherein the catalytic conversion is performed at least in part in the form of a hydrogenation. A corresponding plant is also the subject of the present invention.
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公开(公告)号：US10399914B2
公开(公告)日：2019-09-03
申请号：US16053348
申请日：2018-08-02
摘要： A method may comprise: feeding a backend deethanizer overhead stream comprising ethylene, ethane, and acetylene to a hydrogenation reactor; hydrogenating at least a portion of the acetylene in the backend deethanizer overhead stream to form a reactor effluent stream comprising ethylene, ethane, and green oil; feeding the reactor effluent stream to a gas/liquid coalescer; and removing at least a portion of the green oil from the reactor effluent stream to produce a cleaned effluent stream.
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公开(公告)号：US10370311B2
公开(公告)日：2019-08-06
申请号：US15165882
申请日：2016-05-26
申请人： Evonik Degussa GmbH
IPC分类号： C07C7/12 , C07C7/00 , B01D15/00 , B01J20/06 , B01J20/08 , C10G25/00 , C07C2/06 , C07C2/56 , C07C5/327 , C07C7/04 , C07C7/10 , C07C7/163 , C07C7/167 , C07C41/09 , C07D307/60 , C10G45/04 , C10G45/22 , C07C2/58 , C07C5/48
摘要： The invention relates to a process for purifying hydrocarbon mixtures, in which a contaminated hydrocarbon mixture comprising olefins having three to eight carbon atoms is at least partly freed of sulphur-containing contaminants by contacting it with a solid sorbent, the hydrocarbon mixture being exclusively in the liquid state during the contact with the sorbent. The problem that it addressed was that of virtually completely removing sulphur compounds present in the mixture without forming new sulphur compounds again at the same time. At the same time, 1-butene present therein was not to be lost in the purification of the mixture. Finally, the sorbent used was to have a high sorption capacity, be very substantially free of carcinogenic constituents and be readily available. This problem is solved by using a sorbent based on copper oxide, zinc oxide and aluminium oxide in a particular composition, and by conducting the purification in the presence of a small amount of hydrogen.
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公开(公告)号：US20180178186A1
公开(公告)日：2018-06-28
申请号：US15901261
申请日：2018-02-21
IPC分类号： B01J19/24 , C07C6/04 , C10G50/00 , C10G45/32 , C10G9/36 , C07C7/05 , C07C7/163 , C07C7/167 , C07C7/177 , C07C11/06 , C07C11/10
CPC分类号： B01J19/242 , B01J2219/00006 , C07C6/04 , C07C7/05 , C07C7/163 , C07C7/167 , C07C7/177 , C10G9/36 , C10G45/32 , C10G50/00 , Y02P20/127 , Y02P20/52 , C07C11/06 , C07C11/10
摘要： Producing C5 olefins from steam cracker C5 feeds may include reacting a mixed hydrocarbon stream comprising cyclopentadiene, C5 olefins, and C6+ hydrocarbons in a dimerization reactor where cyclopentadiene is dimerized to dicyclopentadiene. The dimerization reactor effluent may be separated into a fraction comprising the C6+ hydrocarbons and dicyclopentadiene and a second fraction comprising C5 olefins and C5 dienes. The second fraction, a saturated hydrocarbon diluent stream, and hydrogen may be fed to a catalytic distillation reactor system for concurrently separating linear C5 olefins from saturated hydrocarbon diluent, cyclic C5 olefins, and C5 dienes contained in the second fraction and selectively hydrogenating C5 dienes. An overhead distillate including the linear C5 olefins and a bottoms product including cyclic C5 olefins are recovered from the catalytic distillation reactor system. Other aspects of the C5 olefin systems and processes, including catalyst configurations and control schemes, are also described.
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129.发明申请公开(公告)号：US20180147564A1
公开(公告)日：2018-05-31
申请号：US15825964
申请日：2017-11-29
发明人： Malika BOUALLEG , Priscilla AVENIER
IPC分类号： B01J23/44 , C07C7/167 , C07C7/163 , B01J21/04 , B01J35/10 , B01J37/02 , B01J37/08 , B01J37/10 , B01J37/16 , B01J35/02
摘要： A catalyst comprises an active phase constituted by palladium, and a porous support comprising at least one refractory oxide selected from the group constituted by silica, alumina and silica-alumina, in which: the palladium content in the catalyst is in the range 0.0025% to 1% by weight with respect to the total weight of catalyst; at least 80% by weight of the palladium is distributed in a crust at the periphery of the porous support, the thickness of said crust being in the range 25 to 500 μm; the specific surface area of the porous support is in the range 1 to 50 m2/g; the metallic dispersion D of the palladium is less than 20%.
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公开(公告)号：US20170106346A1
公开(公告)日：2017-04-20
申请号：US15366277
申请日：2016-12-01
发明人： Vasily Simanzhenkov , Leonid Modestovich Kustov , Aleksey Victorovich Kucherov , Elena Dmitrievna Finashina , Xiaoliang Gao , Edward Christopher Foy , Claire Jeannine Ennis
CPC分类号： B01J19/2475 , B01J19/0046 , B01J19/242 , B01J19/245 , B01J23/002 , B01J23/28 , B01J23/755 , B01J23/847 , B01J27/0576 , B01J35/065 , B01J35/1009 , B01J35/1014 , B01J2219/24 , C07B39/00 , C07C5/48 , C07C7/167 , C07C51/16 , C07C67/04 , C08F110/02 , C10G9/36 , C10G27/04 , C10G45/32 , C10G55/04 , C10G70/00 , C10G70/02 , C10G70/046 , C10G70/048 , C10G2300/1081 , C10G2300/4056 , C10G2400/20 , Y02P20/52 , C07C11/04
摘要： Oxidative dehydrogenation of paraffins to olefins provides a lower energy route to produce olefins. Oxidative dehydrogenation processes may be integrated with a number of processes in a chemical plant such as polymerization processes, manufacture of glycols, and carboxylic acids and esters. Additionally, oxidative dehydrogenation processes can be integrated with the back end separation process of a conventional steam cracker to increase capacity at reduced cost.
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