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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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2.发明申请Processing by a separation technique of a gas mixture formed from a product stream of a dimethyl reactor 有权通过由二甲基反应器的产物流形成的气体混合物的分离技术进行加工公开(公告)号：US20160326081A1
公开(公告)日：2016-11-10
申请号：US15110037
申请日：2015-01-07
发明人： Helmut Fritz , Andreas Peschel
CPC分类号： C07C41/42 , B01D3/143 , B01D5/0036 , B01D53/1431 , B01D53/1493 , B01D2257/108 , B01D2257/502 , B01D2257/504 , C07C41/01 , C07C41/38 , Y02P20/152 , Y02P70/34 , C07C43/043
摘要： A method for the processing, by separation technology, of a gas mixture (k) which is formed from a product stream (d) of a reactor (4) for synthesising dimethyl ether from synthesis gas (b), and which contains at least dimethyl ether, carbon dioxide and at least one other component which is lower-boiling than carbon dioxide, is proposed. The gas mixture (k) is cooled at a first pressure level from a first temperature level to a second temperature level and a fraction of the gas mixture (k) that remains in gaseous form at the second temperature level is washed in an absorption column (16) with a reflux (v) predominantly containing carbon dioxide. The reflux (v) predominantly containing carbon dioxide is at least partially formed from a fraction of the gas mixture (k) which is separated in liquid form during the cooling.
摘要翻译： 一种用于通过分离技术处理由用于从合成气（b）合成二甲醚的反应器（4）的产物流（d）形成的气体混合物（k）的方法，并且至少含有二甲基 醚，二氧化碳和比二氧化碳低沸点的至少一种其它组分。 气体混合物（k）在从第一温度水平到第二温度水平的第一压力水平下冷却，并且在第二温度水平下保持气态的气体混合物（k）的一部分在吸收塔 16）与回流（v）主要含有二氧化碳。 主要含有二氧化碳的回流（v）至少部分地由在冷却期间以液体形式分离的气体混合物（k）的一部分形成。
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公开(公告)号：US10730810B2
公开(公告)日：2020-08-04
申请号：US16472435
申请日：2017-12-22
摘要： A process for producing an olefin having N carbon atoms is proposed in which using a dehydrogenation a process gas is formed which contains at least the olefin having N carbon atoms, a paraffin having N carbon atoms and a hydrocarbon having N−1 carbon atoms and in which using at least a portion of the process gas a separation input is formed which is subjected to a low temperature separation in which the separation input is cooled stepwise over a plurality of temperature levels and condensates are separated from the separation input, wherein the condensates are at least partly subjected to a first low temperature rectification to obtain a first gas fraction and a first liquid fraction, wherein the first gas fraction contains at least the olefin having N carbon atoms in a lower proportion than in the condensates and the hydrocarbon having N−1 in a higher proportion than in the condensates. It is provided that the first gas fraction is at least partly subjected to a second low temperature rectification using a liquid reflux containing predominantly or exclusively the hydrocarbon having N−1 carbon atoms in which the first gas fraction undergoes depletion in the olefin having N carbon atoms. A corresponding plant (100) likewise forms part of the subject matter of the invention.
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公开(公告)号：US10730811B2
公开(公告)日：2020-08-04
申请号：US16472625
申请日：2017-12-22
发明人： Mathieu Zellhuber , Andreas Peschel , Helmut Fritz
摘要： A process for producing ethylene is proposed in which an ethane- and oxygen-containing reaction input is formed and a portion of the ethane and of the oxygen in the reaction input is converted into ethylene and into acetic acid by oxidative dehydrogenation to obtain a process gas, wherein the process gas contains the unconverted portion of the ethane and of the oxygen, the ethylene and the acetic acid and also water and wherein the process gas is subjected to a water quench. It is provided that the water quench comprises introducing the process gas into a scrubbing column (10, 20, 30, 40, 50) into which in at least two different column portions respective aqueous, liquid scrubbing medium streams are introduced and run in countercurrent to the process gas. A corresponding plant (100) likewise forms part of the subject matter of the invention.
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公开(公告)号：US10246394B2
公开(公告)日：2019-04-02
申请号：US15109951
申请日：2015-01-05
发明人： Helmut Fritz , Andreas Peschel
摘要： A method for the processing, by separation technology, of a product stream (g), containing at least dimethyl ether, methanol, water, carbon dioxide, carbon monoxide and hydrogen, from a reactor (4) used for the synthesis of dimethyl ether (z) from synthesis gas (e), is proposed. The product stream (g) is fed, in at least partially gaseous form, into an absorption column (6) operated with a liquid reflux, a gaseous top stream (m) being removed from the absorption column (6) at the top and a liquid sump stream (p) being removed at the bottom. The sump stream (p) is at least partially fed into a first distillation column (5), a gaseous transfer stream (q) containing dimethyl ether and a stream (r) predominantly containing methanol and/or water being removed from the first distillation column (5). The top stream (m) is at least partially cooled initially to a first temperature level and subsequently further cooled to one or more further temperature levels, a first condensate stream (n) being formed after the cooling to the first temperature level and one or more further condensate streams (s, t) being formed after the further cooling to the further temperature level or levels. The first condensate stream (n) is partially used to form the liquid reflux and the further condensate stream or streams (s, t) is or are at least partially fed into a further distillation column (9), from which a liquid stream (z) predominantly containing dimethyl ether and poor in or free from carbon dioxide is removed at the bottom. The invention also relates to a corresponding separation apparatus and an apparatus (100) for producing dimethyl ether.
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公开(公告)号：US09868685B2
公开(公告)日：2018-01-16
申请号：US15110037
申请日：2015-01-07
发明人： Helmut Fritz , Andreas Peschel
CPC分类号： C07C41/42 , B01D3/143 , B01D5/0036 , B01D53/1431 , B01D53/1493 , B01D2257/108 , B01D2257/502 , B01D2257/504 , C07C41/01 , C07C41/38 , Y02P20/152 , Y02P70/34 , C07C43/043
摘要： A method for the processing, by separation technology, of a gas mixture (k) which is formed from a product stream (d) of a reactor (4) for synthesizing dimethyl ether from synthesis gas (b), and which contains at least dimethyl ether, carbon dioxide and at least one other component which is lower-boiling than carbon dioxide, is proposed. The gas mixture (k) is cooled at a first pressure level from a first temperature level to a second temperature level and a fraction of the gas mixture (k) that remains in gaseous form at the second temperature level is washed in an absorption column (16) with a reflux (v) predominantly containing carbon dioxide. The reflux (v) predominantly containing carbon dioxide is at least partially formed from a fraction of the gas mixture (k) which is separated in liquid form during the cooling.
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公开(公告)号：US20160326078A1
公开(公告)日：2016-11-10
申请号：US15111601
申请日：2015-01-05
发明人： Helmut Fritz , Thomas Bartesch , Clara Delhomme , Andreas Peschel , Johannes Fendt , Harald Klein
IPC分类号： C07C41/01
CPC分类号： C07C41/01 , C07C27/06 , C07C41/09 , C07C43/043
摘要： A process is proposed for production of dimethyl ether (DME) from synthesis gas (SG), in which at least one feed stream formed from synthesis gas (SG) is subjected to at least one synthesis step, in which components present in the feed stream are at least in part converted to dimethyl ether (DME), wherein at least one crude product stream is obtained which contains at least dimethyl ether (DME) and the unreacted components of the feed stream. The feed stream contains at least hydrogen, carbon monoxide and carbon dioxide, and has a stoichiometric number of 2.0 to 5.0. The feed stream further contains 4 to 20 mol percent carbon dioxide, and the ratio of carbon dioxide to carbon monoxide in the feed stream is in a range from 0.5 to 4. The at least one synthesis step is carried out under isothermal conditions. A system for production of dimethyl ether (DME) from synthesis gas (SG) is likewise subject matter of the present invention.
摘要翻译： 提出了从合成气（SG）生产二甲醚（DME）的方法，其中由合成气（SG）形成的至少一种进料流经受至少一个合成步骤，其中存在于进料流中的组分 至少部分转化为二甲醚（DME），其中获得至少含有至少二甲醚（DME）和进料流的未反应组分的粗产物流。 进料流至少包含氢，一氧化碳和二氧化碳，化学计量数为2.0至5.0。 进料流还含有4至20mol％的二氧化碳，并且进料流中二氧化碳与一氧化碳的比例在0.5至4的范围内。至少一个合成步骤在等温条件下进行。 用于从合成气（SG）生产二甲醚（DME）的系统也是本发明的主题。
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