公开(公告)号：US20180320960A1

公开(公告)日：2018-11-08

申请号：US15773431

申请日：2016-09-29

申请人： L'Air Liquide, Société Anonyme pour I'Etude et I'Exploitation des Procésdés Georges Claude

发明人： Paul TERRIEN ,  Marie-Pascal VICTOR ,  Ludovic GRANADOS ,  Michele MURINO ,  Bertrand DEMOLLIENS

IPC分类号： F25J3/02

CPC分类号： F25J3/0257 ,  F25J3/0209 ,  F25J3/0233 ,  F25J3/0238 ,  F25J3/029 ,  F25J2200/02 ,  F25J2200/04 ,  F25J2200/30 ,  F25J2200/76 ,  F25J2200/78 ,  F25J2205/02 ,  F25J2205/04 ,  F25J2230/08 ,  F25J2240/02 ,  F25J2270/04 ,  F25J2290/40

摘要： A process for the separation of the components of a gas mixture to be treated comprising methane, nitrogen and at least one hydrocarbon having at least two carbon atoms, or a mixture of these hydrocarbons, including introducing the gas mixture to be treated into a first distillation column, thereby producing, in the column bottom, a first liquid stream enriched in hydrocarbon having at least two carbon atoms and, at the column top, a first gas stream enriched in methane; and introducing the first liquid stream enriched in hydrocarbon having at least two carbon atoms resulting from stage a) into a second distillation column, thereby producing, at the top of this column, a second gas stream rich in methane and, in the bottom of this column, a second liquid stream comprising at least 85 mol % of the hydrocarbons having at least two carbon atoms initially present in the mixture to be treated.

公开(公告)号：US10006701B2

公开(公告)日：2018-06-26

申请号：US14988388

申请日：2016-01-05

申请人： Fluor Technologies Corporation

发明人： John Mak

IPC分类号： F25J3/06 ,  F25J3/02

CPC分类号： F25J3/064 ,  F25J3/0209 ,  F25J3/0233 ,  F25J3/0238 ,  F25J3/0242 ,  F25J3/0615 ,  F25J3/0695 ,  F25J2200/04 ,  F25J2200/70 ,  F25J2200/78 ,  F25J2205/04 ,  F25J2235/60 ,  F25J2240/40 ,  F25J2245/02 ,  F25J2270/90 ,  F25J2280/02 ,  F25J2290/40

摘要： A method for operating a natural gas liquids processing (NGL) system, the system being selectively configured in either an ethane rejection configuration or an ethane recovery configuration, the method comprising, when the NGL system is in the ethane rejection configuration, collecting a reboiler bottom stream that, in the ethane rejection configuration, includes ethane in an amount of less than 5% by volume, and when the NGL system is in the ethane recovery configuration, collecting a reboiler bottom stream that, in the ethane recovery configuration, includes ethane in an amount of at least about 30% by volume.

公开(公告)号：US20180087833A1

公开(公告)日：2018-03-29

申请号：US15563117

申请日：2015-10-01

申请人： L'Air Liquide, Société Anonyme pour I'Etude et I'Exploitation des Procédés Georges Claude

发明人： Michele MURINO ,  Jean-Marc PEYRON ,  Paul TERRIEN

IPC分类号： F25J3/02

CPC分类号： F25J3/0257 ,  F25J3/0209 ,  F25J3/0233 ,  F25J3/0238 ,  F25J2200/02 ,  F25J2200/04 ,  F25J2200/70 ,  F25J2200/78 ,  F25J2205/02 ,  F25J2205/04 ,  F25J2240/02 ,  F25J2290/50

摘要： A process for separating the components of a gas mixture comprising methane, nitrogen, and at least one hydrocarbon having at least two carbon atoms, or a mixture of these hydrocarbons, including the following steps: a) introduction of a stream of the mixture to be treated into a demethanization of the gas mixture with at least N demethenization column; b) partial condensation of a gas mixture, comprising less than 1 mol % of hydrocarbons having at least two carbon atoms, extracted from the demethanization unit to obtain a liquid, at least a portion of which is treated in order to be extracted as denitrogenated natural gas and a second gas, c) introduction of the second gas into a nitrogen removal unit having N nitrogen removal columns.

公开(公告)号：US09841231B2

公开(公告)日：2017-12-12

申请号：US13282936

申请日：2011-10-27

申请人： Wesley Qualls ,  Weldon L. Ransbarger ,  Shawn S. Huang ,  Jame Yao ,  Doug Elliot ,  Jong Juh Chen ,  Rong-Jwyn Lee

发明人： Wesley Qualls ,  Weldon L. Ransbarger ,  Shawn S. Huang ,  Jame Yao ,  Doug Elliot ,  Jong Juh Chen ,  Rong-Jwyn Lee

IPC分类号： F25J3/00 ,  F25J1/02 ,  F25J1/00 ,  F25J3/02

CPC分类号： F25J1/0265 ,  F25J1/0022 ,  F25J1/0035 ,  F25J1/004 ,  F25J1/0045 ,  F25J1/0052 ,  F25J1/021 ,  F25J1/0231 ,  F25J1/0238 ,  F25J3/0209 ,  F25J3/0233 ,  F25J3/0238 ,  F25J3/0242 ,  F25J3/0247 ,  F25J2200/04 ,  F25J2200/08 ,  F25J2200/40 ,  F25J2200/50 ,  F25J2200/70 ,  F25J2200/74 ,  F25J2200/78 ,  F25J2205/04 ,  F25J2205/50 ,  F25J2210/06 ,  F25J2215/62 ,  F25J2230/08 ,  F25J2235/60 ,  F25J2240/02 ,  F25J2245/02 ,  F25J2260/02 ,  F25J2270/02 ,  F25J2270/12 ,  F25J2270/60 ,  F25J2280/02 ,  F25J2290/40

摘要： Process for efficiently operating a natural gas liquefaction system with integrated heavies removal/natural gas liquids recovery to produce liquefied natural gas (LNG) and/or natural gas liquids (NGL) products with varying characteristics, such as, for example higher heating value (HHV) and/or propane content. Resulting LNG and/or NGL products are capable of meeting the significantly different specifications of two or more markets.

公开(公告)号：US20170336137A1

公开(公告)日：2017-11-23

申请号：US15158143

申请日：2016-05-18

申请人： Fluor Technologies Corporation

发明人： John Mak ,  Jacob Thomas ,  Curt Graham

IPC分类号： F25J1/02 ,  F25J1/00 ,  F25J3/02

CPC分类号： F25J1/0228 ,  F25J1/0022 ,  F25J1/0035 ,  F25J1/004 ,  F25J1/0052 ,  F25J1/0055 ,  F25J1/0212 ,  F25J1/0216 ,  F25J1/0239 ,  F25J1/0291 ,  F25J3/0209 ,  F25J3/0233 ,  F25J3/0238 ,  F25J3/0242 ,  F25J2200/02 ,  F25J2200/04 ,  F25J2200/08 ,  F25J2200/70 ,  F25J2200/76 ,  F25J2200/78 ,  F25J2205/50 ,  F25J2210/06 ,  F25J2215/04 ,  F25J2215/60 ,  F25J2215/62 ,  F25J2215/64 ,  F25J2230/30 ,  F25J2230/60 ,  F25J2235/60 ,  F25J2240/02 ,  F25J2260/20 ,  F25J2270/12 ,  F25J2270/18 ,  F25J2270/60 ,  F25J2270/66

摘要： A LNG liquefaction plant includes a propane recovery unit including an inlet for a feed gas, a first outlet for a LPG, and a second outlet for an ethane-rich feed gas, an ethane recovery unit including an inlet coupled to the second outlet for the ethane-rich feed gas, a first outlet for an ethane liquid, and a second outlet for a methane-rich feed gas, and a LNG liquefaction unit including an inlet coupled to the second outlet for the methane-rich feed gas, a refrigerant to cool the methane-rich feed gas, and an outlet for a LNG. The LNG plant may also include a stripper, an absorber, and a separator configured to separate the feed gas into a stripper liquid and an absorber vapor. The stripper liquid can be converted to an overhead stream used as a reflux stream to the absorber.

公开(公告)号：US20170122658A1

公开(公告)日：2017-05-04

申请号：US15337684

申请日：2016-10-28

申请人： Black & Veatch Holding Company

发明人： Kevin L. Currence

IPC分类号： F25J1/00

CPC分类号： F25J1/0022 ,  F25J3/0209 ,  F25J3/0233 ,  F25J3/0238 ,  F25J3/0242 ,  F25J2200/04 ,  F25J2200/74 ,  F25J2200/78 ,  F25J2205/02 ,  F25J2205/50 ,  F25J2210/06 ,  F25J2210/60 ,  F25J2215/04 ,  F25J2215/64 ,  F25J2215/66 ,  F25J2220/64 ,  F25J2235/60 ,  F25J2240/40 ,  F25J2270/02 ,  F25J2270/08 ,  F25J2270/90

摘要： Enhanced low temperature separation (LTS) processes are provided for separating light hydrocarbon components from heavy hydrocarbon components. The enhanced LTS process utilizes an absorber and a de-ethanizer tower to achieve sufficiently pure natural gas liquid (NGL) products and residue gas products. A portion of the de-ethanizer tower overhead is condensed and recycled as reflux for the absorber. The enhanced LTS process requires less refrigeration of the feed gas stream yet still achieves increased recovery of the valuable heavier hydrocarbons from hydrocarbon gas streams. The enhanced LTS process also reduces compression requirements compared to conventional LTS processes.

公开(公告)号：US20160216030A1

公开(公告)日：2016-07-28

申请号：US14604030

申请日：2015-01-23

申请人： AIR PRODUCTS AND CHEMICALS, INC.

发明人： Timothy Truong ,  Gowri Krishnamurthy ,  Mark Julian Roberts

IPC分类号： F25J3/02

CPC分类号： F25J3/0214 ,  F25J1/0022 ,  F25J1/0045 ,  F25J1/0052 ,  F25J1/0055 ,  F25J1/0216 ,  F25J1/0237 ,  F25J1/0241 ,  F25J1/025 ,  F25J1/0292 ,  F25J3/0209 ,  F25J3/0233 ,  F25J3/0238 ,  F25J3/0242 ,  F25J2200/02 ,  F25J2200/04 ,  F25J2200/72 ,  F25J2200/74 ,  F25J2200/78 ,  F25J2210/04 ,  F25J2215/62 ,  F25J2245/02 ,  F25J2260/02 ,  F25J2270/02 ,  F25J2270/18 ,  F25J2270/66

摘要： Described herein is a method of and system for fractionating and liquefying a natural gas feed stream. The natural gas is first fractionated in a scrub column. The overhead vapor from the scrub column is cooled, condensed and divided to form a first, a second and at least one further stream of liquefied first overhead. The first stream of liquefied first overhead is returned to the scrub column as a reflux stream. The second stream of liquefied first overhead forms an LNG product. The further stream of liquefied first overhead is used to provide or generate reflux for a de-methanizer column used to fractionate the bottoms liquid from the scrub column.

摘要翻译： 本文描述了天然气进料流的分馏和液化的方法和系统。 天然气首先在洗涤塔中分馏。 来自洗涤塔的塔顶蒸气被冷却，冷凝和分离以形成液化的第一塔顶馏出物的第一，第二和至少一个另外的物流。 液化的第一塔顶馏出物作为回流流返回洗涤塔。 液化的第一塔顶液流形成LNG产品。 进一步的液化的第一塔顶物流用于为用于从洗涤塔中分馏底部液体的脱甲烷塔提供或产生回流。

公开(公告)号：US09377239B2

公开(公告)日：2016-06-28

申请号：US11940749

申请日：2007-11-15

申请人： Jon M. Mock ,  Michael A. Wilkes

发明人： Jon M. Mock ,  Michael A. Wilkes

IPC分类号： F25J3/02 ,  F25J1/02 ,  F25J1/00

CPC分类号： F25J3/0209 ,  F25J1/0022 ,  F25J1/004 ,  F25J1/0052 ,  F25J1/021 ,  F25J1/0265 ,  F25J3/0233 ,  F25J3/0238 ,  F25J3/0242 ,  F25J2200/02 ,  F25J2200/04 ,  F25J2200/70 ,  F25J2200/76 ,  F25J2200/78 ,  F25J2205/02 ,  F25J2205/04 ,  F25J2210/06 ,  F25J2215/62 ,  F25J2235/60 ,  F25J2245/02 ,  F25J2260/02 ,  F25J2270/02 ,  F25J2270/12 ,  F25J2270/60 ,  F25J2290/40

摘要： A liquefied natural gas facility employing a heavies removal column having multiple reflux streams. The reflux streams can have different compositions and can be operable to reduce the critical pressure of the fluids within the heavies removal column in order to permit the column to operate at higher pressures without adversely affecting the horsepower requirements of plant compressor/driver systems.

摘要翻译： 一种液化天然气设施，采用具有多个回流的重质清除塔。 回流物流可以具有不同的组成并且可操作以降低重质物除去塔内的流体的临界压力，以允许塔在较高压力下操作，而不会不利地影响工厂压缩机/驱动器系统的功率要求。

公开(公告)号：US20150300733A1

公开(公告)日：2015-10-22

申请号：US14751562

申请日：2015-06-26

申请人： Lummus Technology Inc.

发明人： Michael Malsam

IPC分类号： F25J1/00 ,  F25J3/02

CPC分类号： F25J3/0242 ,  C10L3/10 ,  C10L3/105 ,  F25J1/0022 ,  F25J3/0209 ,  F25J3/0214 ,  F25J3/0233 ,  F25J3/0238 ,  F25J3/0247 ,  F25J3/0257 ,  F25J2200/04 ,  F25J2200/40 ,  F25J2200/78 ,  F25J2200/94 ,  F25J2205/40 ,  F25J2205/80 ,  F25J2215/02 ,  F25J2215/42 ,  F25J2215/60 ,  F25J2215/62 ,  F25J2220/62 ,  F25J2230/60 ,  F25J2245/02 ,  F25J2245/42 ,  F25J2270/02 ,  F25J2270/12 ,  F25J2270/60 ,  F25J2270/88

摘要： A process for recovery of natural gas liquids is disclosed, the process including: fractionating a gas stream comprising nitrogen, methane, ethane, and propane and other C3+ hydrocarbons into at least two fractions including a light fraction comprising nitrogen, methane, ethane, and propane, and a heavy fraction comprising propane and other C3+ hydrocarbons; separating the light fraction into at least two fractions including a nitrogen-enriched fraction and a nitrogen-depleted fraction in a first separator; separating the nitrogen-depleted fraction into a propane-enriched fraction and a propane-depleted fraction in a second separator; feeding at least a portion of the propane-enriched fraction to the fractionating as a reflux; recycling at least a portion of the propane-depleted fraction to the first separator. In some embodiments, the nitrogen-enriched fraction may be separated in a nitrogen removal unit to produce a nitrogen-depleted natural gas stream and a nitrogen-enriched natural gas stream.

摘要翻译： 公开了回收天然气液体的方法，该方法包括：将包含氮气，甲烷，乙烷和丙烷以及其它C 3+烃的气流分馏成至少两个馏分，包括含有氮，甲烷，乙烷和丙烷的轻馏分 ，和包含丙烷和其它C 3+烃的重馏分; 将轻馏分在第一分离器中分离成包含富氮馏分和贫氮馏分的至少两个馏分; 将所述贫氮部分分离成富丙烷馏分和在第二分离器中的丙烷贫化馏分; 将至少一部分富含丙烷的馏分进料至作为回流的馏分; 将至少一部分丙烷贫化的馏分回收到第一分离器。 在一些实施方案中，可以在除氮单元中分离富氮馏分以产生贫氮天然气流和富氮天然气流。

公开(公告)号：US20150276308A1

公开(公告)日：2015-10-01

申请号：US14432726

申请日：2013-10-01

申请人： Laura Annamaria PELLEGRINI ,  STAMICARBON B.V. ACTING UNDER THE NAME OF MT INNOVATION CENTER

发明人： Laura Annamaria Pellegrini

IPC分类号： F25J3/02

CPC分类号： F25J3/0266 ,  C10L3/102 ,  C10L3/103 ,  C10L3/104 ,  F25J3/0209 ,  F25J3/0233 ,  F25J2200/04 ,  F25J2200/08 ,  F25J2200/40 ,  F25J2200/74 ,  F25J2200/78 ,  F25J2210/66 ,  F25J2220/66 ,  F25J2235/60 ,  Y02C10/12

摘要： The invention relates to a process for the removal of CO2 from acid gas by cryogenic distillation performed in two steps. The feed mixture is first distilled at high pressure (at least 45 bar) in a first distillation column. The top product or a part thereof is then, after heating, subjected to a second distillation step at a lower pressure (lower than 45 bar). The top product of the second distillation step is methane of high purity (more than 99 mol.%). The bottom product of the second distillation step is recycled back to the first distillation column. The method according to the invention allows complete separation of methane also at higher level of acidic components, is economical and does not result in solid CO2 build-up, which is a common problem in cryogenic distillation.

摘要翻译： 本发明涉及通过两步进行的低温蒸馏从酸性气体中除去CO 2的方法。 首先在第一蒸馏塔中高压（至少45巴）蒸馏进料混合物。 然后，顶部产品或其一部分在加热后进行较低压力（低于45巴）的第二蒸馏步骤。 第二蒸馏步骤的顶部产物是高纯度（大于99mol％）的甲烷。 第二蒸馏步骤的底部产物被循环回到第一蒸馏塔。 根据本发明的方法允许在较高水平的酸性组分中完全分离甲烷，是经济的并且不会导致固体CO 2堆积，这是在低温蒸馏中的常见问题。