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公开(公告)号：US11319264B2
公开(公告)日：2022-05-03
申请号：US16325058
申请日：2017-08-14
IPC分类号： C07C7/00 , C07C7/04 , C07C7/09 , C07C7/11 , C10G5/04 , C10G9/00 , F25J3/02 , C07C4/04 , C07C4/08 , C07C4/10
摘要： The invention relates to a method (100) for the recovery of a separation product which contains predominantly hydrocarbons with two carbon atoms, with the use of a separation feedstock which contains predominantly methane, hydrogen and hydrocarbons with two carbon atoms, wherein the methane content of the separation feedstock is up to 20%, and the separation feedstock is provided in a gaseous state. It is provided that, at a first pressure level, the separation feedstock is partially condensed in a single step by cooling from a first temperature level to a second temperature level, thereby obtaining precisely one first liquid fraction and precisely one first gaseous fraction; at least one part of the first gaseous fraction is partially condensed in a single step through further cooling from the second temperature level to a third temperature level, thereby obtaining precisely one second liquid fraction and precisely one second gaseous fraction; at least one part of the second gaseous fraction at the second pressure level is subjected to a contraflow absorption in the contraflow to an absorption liquid containing predominantly methane, thereby obtaining precisely one third liquid fraction and precisely one third gaseous fraction; the first, the second and the third liquid fraction are at least partially combined and, at least partially, at a second pressure level above the first pressure level, subjected to a low-temperature rectification, thereby obtaining a sump liquid and an overhead gas; at least one part of the overhead gas at the second pressure level is partially condensed in a single step through further cooling from the second temperature level to the third temperature level, thereby obtaining a fourth liquid fraction and a fourth gaseous fraction; and the absorption liquid containing predominantly methane is formed through further cooling of at least a part of the fourth gaseous fraction to a fourth temperature level. A corresponding plant also forms the subject matter of the invention.
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公开(公告)号：US11224837B2
公开(公告)日：2022-01-18
申请号：US16680869
申请日：2019-11-12
摘要： A method is provided in which a carbon dioxide containing flue gas is provided by combusting a carbonaceous fuel in a high pressure steam generating unit using combustion air, and in which the carbon dioxide in the flue gas is at least partially captured and compressed in a carbon dioxide capture and compression unit having a carbon dioxide scrubber operated with an absorbing liquid which is regenerated using low pressure steam. The combustion air used in the high pressure steam generating unit is at least partially heated using sensible heat of the flue gas and/or the steam used for regenerating the absorption liquid of the carbon dioxide scrubber is at least partially generated using sensible heat of the flue gas. A corresponding system is also described herein.
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公开(公告)号：US11130722B2
公开(公告)日：2021-09-28
申请号：US16646964
申请日：2018-09-13
摘要： Proposed is a process for producing ethylene wherein using a dehydrogenation of ethane a process gas containing at least ethane, ethylene and compounds having a lower boiling point than ethane and ethylene is formed, wherein using at least a part of the process gas a separation input is formed and subjected to a low-temperature separation (6) in which the separation input is cooled and in which one or more condensates are separated from the separation input, wherein the condensate(s) are at least partly subjected to a low-temperature rectification to obtain a gaseous first fraction and a liquid second fraction, wherein the gaseous first fraction contains at least the ethane and the ethylene in a lower proportion than in the separation input and the compounds having a lower boiling point than ethane and ethylene in a higher proportion than in the separation input. It is provided that the first fraction is at least partly subjected to a pressure swing adsorption (7) by means of which a third fraction containing predominantly or exclusively ethylene and ethane and a fourth fraction containing predominantly or exclusively methane and carbon monoxide are formed. A corresponding plant (100) likewise forms part of the subject matter of the present invention.
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公开(公告)号：US11118834B2
公开(公告)日：2021-09-14
申请号：US14769465
申请日：2014-03-18
发明人： Dimitri Goloubev
摘要： Method and device for generating gaseous compressed nitrogen by the low-temperature separation of air in a distillation column system, having a pre-column, a high-pressure column and a low-pressure column. The feed air is compressed, purified in a purification apparatus and cooled. A first sub-flow of the cooled feed air is introduced in a predominantly liquid state into the distillation column system. A gaseous fraction from the pre-column in introduced into the liquefaction chamber of a pre-column head condenser with liquid formed therein fed as reflux into the pre-column. A first gaseous nitrogen product fraction is drawn from the high-pressure column, heated, and obtained as first gaseous compressed nitrogen product. At least a part of the second sub-flow is introduced into the evaporation chamber of the pre-column head condenser. A third sub-flow of the cooled feed air is expanded to perform work and subsequently introduced into the liquefaction chamber.
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公开(公告)号：US11098950B2
公开(公告)日：2021-08-24
申请号：US15995742
申请日：2018-06-01
发明人： Dimitri Golubev
IPC分类号： F25J3/04
摘要： The invention proposes a process and an air separation plant comprising a rectification column system comprising a high-pressure column, a low-pressure column, a main heat exchanger, and a main air compressor. The total air supplied to the rectification column system is compressed in the main air compressor to a first pressure level. The high-pressure column is operated at a second pressure level, at least 3 bar below the first pressure level. A gaseous, nitrogen-rich fluid is removed from the high-pressure column and warmed up in the gaseous state without prior liquefaction. A first partial quantity of the gaseous, nitrogen-rich fluid is warmed to a first temperature level of −150 to −100° C., supplied at this first temperature level to a booster and compressed further to a third pressure level. The first partial quantity is then warmed to a second temperature level and discharged from the air separation plant.
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公开(公告)号：US11047633B2
公开(公告)日：2021-06-29
申请号：US15576710
申请日：2016-05-25
发明人： Manfred Steinbauer , Thomas Hecht , Christiane Kerber , Reinhold Holzl , Axel Lehmacher , Pascal Freko , Ingo Thomas , Alexander Woitalka
摘要： The invention relates to a method for determining the state of a heat exchanger device (10) that comprises means for transferring heat with the aid of at least one process stream. A thermohydraulic simulation of the at least one process stream through at least one passage (14) in the heat exchanger device (10) is carried out in order to determine temperature and/or heat transfer coefficient profiles of the means for transferring heat.
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公开(公告)号：US11020801B2
公开(公告)日：2021-06-01
申请号：US16300089
申请日：2017-05-12
发明人： Jürgen Scholz , Ernst Miklos , Jim Fieret
IPC分类号： B22F9/08
摘要： The invention relates to a method for coding metal powder. Said method comprises the following steps: providing a melt, forming a melt stream, spraying the melt stream by means of a spraying fluid, and forming metal powder particles from the melt stream. The method is characterized in that, during the spraying of the melt and/or the spraying fluid, a coding component or a coding gas is added in such a way that the use of the coding component in the metal powder can be detected, wherein the gaseous coding component comprises one or more isotopes of at least one gas and the fraction of the at least one isotope is changed in comparison with the naturally occurring fraction of said isotope in the gas and/or wherein the gaseous coding component contains gaseous alloying elements.
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公开(公告)号：US20210121993A1
公开(公告)日：2021-04-29
申请号：US16635650
申请日：2018-07-09
发明人： Nakhleh A. HUSSARY
摘要： The present invention relates to a device for plasma cutting, comprising a cutting torch (100) provided with an electrode (120), which is coaxially surrounded by a nozzle (110), thereby defining a passage (112) for passing of a plasma gas between electrode and nozzle, wherein the nozzle is coaxially surrounded by a shielding cap (122), thereby defining a passage (114) for passing of a shielding flow between nozzle and shielding cap, the device further comprising an annular member (200) coaxially surrounding the cutting torch (100) configured and adapted to provide a further curtain flow coaxially surrounding the shielding flow through passage (250a and 250b) wherein annular member (200) is configured and adapted for use of CO2-snow or a mixture containing CO2-snow as shielding flow.
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公开(公告)号：US10928007B2
公开(公告)日：2021-02-23
申请号：US16098655
申请日：2017-04-28
发明人： Heinz Posselt , Philip Werner , Marko Parkkonen , Anders Gronlund , Stefan C. Agren , Martin Smedstad
摘要： A transport container for helium, having an inner container for receiving helium, a thermal shield actively coolable with the aid of a cryogenic liquid and in which the inner container is accommodated, an outer container in which the thermal shield and inner container are accommodated, and a carrying ring provided on the thermal shield. The inner container is suspended from the carrying ring with the aid of first suspension rods, wherein the carrying ring is suspended from the outer container with the aid of second suspension rods, wherein at least one of the first suspension rods has a first spring device and at least one of the second suspension devices has a second spring device in order to ensure a spring pretension of the first suspension rods and the second suspension rods for different heat expansions of the inner container and the thermal shield.
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公开(公告)号：US10829682B2
公开(公告)日：2020-11-10
申请号：US15383023
申请日：2016-12-19
摘要： A method for enhanced or improved oil recovery includes injecting a miscible injection fluid comprising an unfractionated hydrocarbon mixture through an injection well into a hydrocarbon bearing reservoir at a structurally higher position to initiate gravity-stable displacement and gas cap expansion processes. Residual hydrocarbons in the hydrocarbon bearing reservoir are mobilized and displaced by the miscible injection fluid to a structurally lower position within the hydrocarbon bearing reservoir adjacent a production well through which they are produced to the surface.
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