公开(公告)号：US09074814B2

公开(公告)日：2015-07-07

申请号：US13051682

申请日：2011-03-18

Applicant: Andrew F. Johnke ,  W. Larry Lewis ,  L. Don Tyler ,  John D. Wilkinson ,  Joe T. Lynch ,  Hank M. Hudson ,  Kyle T. Cuellar

Inventor： Andrew F. Johnke ,  W. Larry Lewis ,  L. Don Tyler ,  John D. Wilkinson ,  Joe T. Lynch ,  Hank M. Hudson ,  Kyle T. Cuellar

IPC: F25J3/00 ,  F25J3/02 ,  C10G5/04 ,  C10G5/06

CPC classification number: F25J3/0209 ,  C10G5/04 ,  C10G5/06 ,  C10G2300/1025 ,  F25J3/0233 ,  F25J3/0242 ,  F25J2200/02 ,  F25J2200/30 ,  F25J2200/74 ,  F25J2200/78 ,  F25J2205/02 ,  F25J2205/04 ,  F25J2235/60 ,  F25J2240/02 ,  F25J2270/12 ,  F25J2270/60 ,  F25J2290/40 ,  Y02P30/10

Abstract: A process and an apparatus are disclosed for a compact processing assembly to recover propane, propylene, and heavier hydrocarbon components from a hydrocarbon gas stream. The gas stream is cooled, expanded to lower pressure, and fed to an absorbing means. A first distillation liquid stream from the absorbing means is fed to a mass transfer means. A first distillation vapor stream from the mass transfer means is cooled to partially condense it, forming a residual vapor stream and a condensed stream. The condensed stream is supplied as the top feed to the absorbing means. A second distillation vapor stream from the absorbing means is heated by cooling the first distillation vapor stream, combined with the residual vapor stream, and heated by cooling the gas stream. A second distillation liquid stream from the mass transfer means is heated in a heat and mass transfer means to strip out its volatile components.

Abstract translation: 公开了用于从烃气流中回收丙烷，丙烯和较重烃组分的紧凑加工组件的方法和设备。 将气流冷却，膨胀至较低压力，并送入吸收装置。 来自吸收装置的第一蒸馏液流被供给到传质装置。 将来自传质装置的第一蒸馏蒸气物流冷却以使其部分冷凝，形成残留的蒸气流和冷凝物流。 冷凝流作为顶部进料供给到吸收装置。 来自吸收装置的第二蒸馏蒸汽流通过冷却第一蒸馏蒸汽流而加热，与残余蒸气流组合，并通过冷却气流加热。 来自质量传递装置的第二蒸馏液体流在热和质量传递装置中被加热以除去其挥发性组分。

公开(公告)号：US09052136B2

公开(公告)日：2015-06-09

申请号：US13048315

申请日：2011-03-15

Applicant: Andrew F. Johnke ,  W. Larry Lewis ,  L. Don Tyler ,  John D. Wilkinson ,  Joe T. Lynch ,  Hank M. Hudson ,  Kyle T. Cuellar

Inventor： Andrew F. Johnke ,  W. Larry Lewis ,  L. Don Tyler ,  John D. Wilkinson ,  Joe T. Lynch ,  Hank M. Hudson ,  Kyle T. Cuellar

IPC: F25J3/00 ,  F25J3/02 ,  C10G5/06

CPC classification number: F25J3/0209 ,  C10G5/06 ,  C10G2300/1025 ,  F25J3/0233 ,  F25J3/0238 ,  F25J3/0242 ,  F25J2200/02 ,  F25J2200/70 ,  F25J2200/74 ,  F25J2200/80 ,  F25J2205/02 ,  F25J2205/04 ,  F25J2210/06 ,  F25J2235/60 ,  F25J2240/02 ,  F25J2270/02 ,  F25J2270/12 ,  F25J2270/60 ,  F25J2290/40 ,  F25J2290/42

Abstract: A process and an apparatus are disclosed for a compact processing assembly to recover C2 components (or C3 components) and heavier hydrocarbon components from a hydrocarbon gas stream. The gas stream is cooled and divided into first and second streams. The first stream is further cooled to condense substantially all of it, expanded to lower pressure, and supplied as top feed to an absorbing means. The second stream is also expanded to lower pressure and fed to the bottom of the absorbing means. A distillation vapor stream from the absorbing means is heated by cooling the gas stream and the first stream. A distillation liquid stream from the absorbing means is fed to a heat and mass transfer means to heat it and strip out its volatile components while cooling the gas stream. The absorbing means and the heat and mass transfer means are housed in the processing assembly.

Abstract translation: 公开了一种用于紧凑加工组件以从烃气流中回收C2组分（或C3组分）和较重烃组分的方法和设备。 将气流冷却并分成第一和第二流。 将第一流进一步冷却以基本上将其全部冷凝，膨胀至较低压力，并作为顶部进料供应至吸收装置。 第二流还被扩展到较低的压力并且被馈送到吸收装置的底部。 通过冷却气流和第一流来加热来自吸收装置的蒸馏蒸汽流。 来自吸收装置的蒸馏液体物流被供给到热和质量传递装置以加热它并且在冷却气流的同时剥离其挥发性组分。 吸收装置和热传质装置容纳在处理组件中。

公开(公告)号：US20120000246A9

公开(公告)日：2012-01-05

申请号：US12466669

申请日：2009-05-15

Applicant: Tony L. Martinez ,  John D. Wilkinson ,  Hank M. Hudson ,  Kyle T. Cuellar

Inventor： Tony L. Martinez ,  John D. Wilkinson ,  Hank M. Hudson ,  Kyle T. Cuellar

IPC: F25J3/00

CPC classification number: F25J3/0209 ,  F25J3/0214 ,  F25J3/0233 ,  F25J3/0238 ,  F25J2200/02 ,  F25J2200/38 ,  F25J2200/50 ,  F25J2200/78 ,  F25J2205/02 ,  F25J2205/04 ,  F25J2210/02 ,  F25J2210/62 ,  F25J2230/08 ,  F25J2230/60 ,  F25J2235/60 ,  F25J2240/02 ,  F25J2245/02 ,  F25J2270/904 ,  F25J2290/40

Abstract: A process for the recovery of heavier hydrocarbons from a liquefied natural gas (LNG) stream and a hydrocarbon gas stream is disclosed. The LNG feed stream is heated to vaporize at least part of it, then expanded and supplied to a fractionation column at a first mid-column feed position. The gas stream is expanded and cooled, then supplied to the column at a second mid-column feed position. A distillation vapor stream is withdrawn from the fractionation column below the mid-column feed positions and directed in heat exchange relation with the LNG feed stream, cooling the distillation vapor stream as it supplies at least part of the heating of the LNG feed stream. The distillation vapor stream is cooled sufficiently to condense at least a part of it, forming a condensed stream. At least a portion of the condensed stream is directed to the fractionation column as its top feed. A portion of the column overhead stream is also directed in heat exchange relation with the LNG feed stream, so that it also supplies at least part of the heating of the LNG feed stream as it is condensed to form a “lean” LNG stream. The quantities and temperatures of the feeds to the column are effective to maintain the column overhead temperature at a temperature whereby the major portion of the desired components is recovered in the bottom liquid product from the column.

Abstract translation: 公开了从液化天然气（LNG）流和烃气流中回收较重烃的方法。 加热LNG进料流至少部分蒸发，然后膨胀并在第一中间柱进料位置供应至分馏塔。 将气流膨胀并冷却，然后在第二中间柱进料位置供给塔。 蒸馏蒸气流从中间塔进料位置以下的分馏塔中排出，并与LNG进料流热交换，并蒸发蒸馏物流，至少部分加热LNG进料流。 将蒸馏蒸气流充分冷却以冷凝其至少一部分，形成冷凝流。 冷凝流的至少一部分作为其顶部进料被引导至分馏塔。 塔顶塔顶物流的一部分也与LNG进料流进行热交换，从而当LNG进料流被冷凝以形成“贫”LNG流时，其还提供LNG进料流的至少一部分加热。 进料到塔的数量和温度有效地将塔顶温度维持在一个温度，从而使所需组分的主要部分在塔的底部液体产物中回收。

公开(公告)号：US20110296867A1

公开(公告)日：2011-12-08

申请号：US13117242

申请日：2011-05-27

Applicant: Kyle T. Cuellar ,  John D. Wilkinson ,  Hank M. Hudson

Inventor： Kyle T. Cuellar ,  John D. Wilkinson ,  Hank M. Hudson

IPC: F25J3/00

CPC classification number: F25J3/0266 ,  F25J3/0209 ,  F25J3/0219 ,  F25J3/0223 ,  F25J3/0233 ,  F25J3/0252 ,  F25J2200/02 ,  F25J2200/70 ,  F25J2205/02 ,  F25J2205/04 ,  F25J2210/12 ,  F25J2220/82 ,  F25J2230/08 ,  F25J2230/60 ,  F25J2230/80 ,  F25J2235/80 ,  F25J2240/02 ,  F25J2245/02 ,  F25J2260/80 ,  F25J2270/02 ,  F25J2270/12 ,  Y02C10/04 ,  Y02C10/12

Abstract: A process and an apparatus are disclosed for removing carbon dioxide from a hydrocarbon gas stream. The gas stream is cooled, expanded to intermediate pressure, and supplied to a fractionation tower at a top column feed position. The tower overhead vapor stream is compressed to higher pressure and cooled to partially condense it, forming a condensed stream. The condensed stream is expanded to intermediate pressure, used to subcool a portion of the tower bottom liquid product, then supplied to the tower at a mid-column feed position. The subcooled portion of the tower bottom liquid product is expanded to lower pressure and used to cool the compressed overhead vapor stream. The quantities and temperatures of the feeds to the fractionation tower are effective to maintain the overhead temperature of the fractionation tower at a temperature whereby the major portion of the carbon dioxide is recovered in the tower bottom liquid product.

Abstract translation: 公开了从烃气流中除去二氧化碳的方法和装置。 将气流冷却，膨胀至中间压力，并在顶部塔进料位置供应至分馏塔。 将塔顶塔顶蒸气流压缩至较高压力并冷却以部分地冷凝，形成冷凝流。 冷凝的液流膨胀到中间压力，用于过滤塔底液体产物的一部分，然后在中间塔进料位置供应到塔中。 将塔底液体产物的过冷部分膨胀至较低压力并用于冷却压缩的塔顶蒸汽流。 进入分馏塔的进料的量和温度对于将分馏塔的塔顶温度维持在塔底液体产物中回收大部分二氧化碳的温度是有效的。

公开(公告)号：US20110067441A1

公开(公告)日：2011-03-24

申请号：US12868993

申请日：2010-08-26

Applicant: Tony L. Martinez ,  John D. Wilkinson ,  Joe T. Lynch ,  Hank M. Hudson ,  Kyle T. Cuellar

Inventor： Tony L. Martinez ,  John D. Wilkinson ,  Joe T. Lynch ,  Hank M. Hudson ,  Kyle T. Cuellar

IPC: F25J3/00

CPC classification number: F25J3/0209 ,  F25J3/0233 ,  F25J3/0238 ,  F25J2200/02 ,  F25J2200/30 ,  F25J2200/74 ,  F25J2200/76 ,  F25J2200/78 ,  F25J2200/90 ,  F25J2200/92 ,  F25J2200/94 ,  F25J2205/04 ,  F25J2210/06 ,  F25J2210/60 ,  F25J2215/60 ,  F25J2230/08 ,  F25J2235/60 ,  F25J2240/02 ,  F25J2240/40 ,  F25J2270/02 ,  F25J2270/12 ,  F25J2290/12 ,  F25J2290/40

Abstract: A process for the recovery of ethane, ethylene, propane, propylene, and heavier hydrocarbon components from a hydrocarbon gas stream is disclosed. The stream is cooled and divided into first and second streams. The first stream is further cooled to condense substantially all of it and is thereafter expanded to the fractionation tower pressure, heated, and supplied to the fractionation tower at an upper mid-column feed position. The second stream is expanded to the tower pressure and is then supplied to the column at a mid-column feed position. A distillation vapor stream is withdrawn from the column above the feed point of the second stream and is then directed into heat exchange relation with the expanded cooled first stream and the tower overhead vapor stream to cool the distillation vapor stream and condense at least a part of it, forming a condensed stream. At least a portion of the condensed stream is directed to the fractionation tower as its top feed. The quantities and temperatures of the feeds to the fractionation tower are effective to maintain the overhead temperature of the fractionation tower at a temperature whereby the major portion of the desired components is recovered.

Abstract translation: 公开了从烃气流中回收乙烷，乙烯，丙烷，丙烯和较重烃组分的方法。 将流冷却并分成第一和第二流。 将第一流进一步冷却以基本上将其全部冷凝，然后将其膨胀至分馏塔的压力，加热，并在上中间塔进料位置供应至分馏塔。 将第二流扩张到塔压力，然后在中间列进料位置供给塔。 蒸馏蒸气流从第二料流的进料点上方的塔中取出，然后与膨化的冷却的第一料流和塔顶塔顶蒸气料流导热至热交换关系，以冷却蒸馏蒸汽流并冷凝至少一部分 它，形成一个冷凝的流。 冷凝流的至少一部分作为顶部进料被引导至分馏塔。 进入分馏塔的进料的量和温度对于将分馏塔的塔顶温度维持在所需组分的主要部分被回收的温度是有效的。

公开(公告)号：US20100287983A1

公开(公告)日：2010-11-18

申请号：US12772472

申请日：2010-05-03

Applicant: Andrew F. Johnke ,  W. Larry Lewis ,  John D. Wilkinson ,  Joe T. Lynch ,  Hank M. Hudson ,  Kyle T. Cuellar

Inventor： Andrew F. Johnke ,  W. Larry Lewis ,  John D. Wilkinson ,  Joe T. Lynch ,  Hank M. Hudson ,  Kyle T. Cuellar

IPC: F25J3/00

CPC classification number: F25J3/0238 ,  C10G5/06 ,  C10G2400/20 ,  F25J3/0209 ,  F25J3/0219 ,  F25J3/0233 ,  F25J3/0242 ,  F25J2200/02 ,  F25J2200/30 ,  F25J2200/70 ,  F25J2200/78 ,  F25J2200/80 ,  F25J2205/04 ,  F25J2210/06 ,  F25J2210/12 ,  F25J2240/02 ,  F25J2270/12 ,  F25J2270/60 ,  F25J2290/40 ,  F25J2290/42 ,  Y02C20/20

Abstract: A process and an apparatus are disclosed for a compact processing assembly to recover ethane, ethylene, and heavier hydrocarbon components from a hydrocarbon gas stream. The gas stream is cooled and divided into first and second streams. The first stream is further cooled, expanded to lower pressure, heated, and its liquid fraction is supplied as a first top feed to an absorbing means. The second stream is expanded to lower pressure and supplied as a bottom feed to the absorbing means. A distillation vapor stream from the absorbing means is combined with the vapor fraction of the first stream, then cooled by the expanded first stream to form a condensed stream that is supplied as a second top feed to the absorbing means. A distillation liquid stream from the bottom of the absorbing means is heated in a heat and mass transfer means to strip out its volatile components.

Abstract translation: 公开了一种用于紧凑加工组件从烃气流中回收乙烷，乙烯和较重烃组分的方法和装置。 将气流冷却并分成第一和第二流。 将第一流进一步冷却，膨胀至较低压力，加热，并将其液体馏分作为第一顶部进料供应至吸收装置。 第二流膨胀到较低的压力，并作为底部进料供给到吸收装置。 来自吸收装置的蒸馏蒸汽物流与第一物流的蒸气馏分组合，然后通过膨胀的第一物流冷却，形成作为第二顶部进料供给到吸收装置的冷凝物流。 来自吸收装置底部的蒸馏液体流在热和质量传递装置中被加热以除去其挥发性组分。

公开(公告)号：US20100287982A1

公开(公告)日：2010-11-18

申请号：US12466661

申请日：2009-05-15

Applicant: Tony L. Martinez ,  John D. Wilkinson ,  Hank M. Hudson ,  Kyle T. Cuellar

Inventor： Tony L. Martinez ,  John D. Wilkinson ,  Hank M. Hudson ,  Kyle T. Cuellar

IPC: F25J3/00

CPC classification number: F25J3/0615 ,  F25J3/0209 ,  F25J3/0214 ,  F25J3/0233 ,  F25J3/0238 ,  F25J2200/02 ,  F25J2200/30 ,  F25J2200/38 ,  F25J2200/72 ,  F25J2200/76 ,  F25J2205/04 ,  F25J2210/02 ,  F25J2210/06 ,  F25J2210/62 ,  F25J2230/08 ,  F25J2230/60 ,  F25J2235/60 ,  F25J2240/02 ,  F25J2270/904 ,  F25J2290/40 ,  F25J2290/50

Abstract: A process for the recovery of heavier hydrocarbons from a liquefied natural gas (LNG) stream and a hydrocarbon gas stream is disclosed. The LNG feed stream is heated to vaporize at least part of it, then expanded and supplied to a fractionation column at a first mid-column feed position. The gas stream is expanded and cooled, then supplied to the column at a second mid-column feed position. A distillation vapor stream is withdrawn from the fractionation column below the mid-column feed positions and directed in heat exchange relation with the LNG feed stream, cooling the distillation vapor stream as it supplies at least part of the heating of the LNG feed stream. The distillation vapor stream is cooled sufficiently to condense at least a part of it, forming a first condensed stream. At least a portion of the first condensed stream is directed to the fractionation column at an upper mid-column feed position. A portion of the column overhead stream is also directed in heat exchange relation with the LNG feed stream, so that it also supplies at least part of the heating of the LNG feed stream as it is condensed, forming a second condensed stream. The second condensed stream is divided into a “lean” LNG stream and a reflux stream, whereupon the reflux stream is supplied to the column at a top column feed position. The quantities and temperatures of the feeds to the column are effective to maintain the column overhead temperature at a temperature whereby the major portion of the desired components is recovered in the bottom liquid product from the column.

Abstract translation: 公开了从液化天然气（LNG）流和烃气流中回收较重烃的方法。 加热LNG进料流至少部分蒸发，然后膨胀并在第一中间柱进料位置供应至分馏塔。 将气流膨胀并冷却，然后在第二中间柱进料位置供给塔。 蒸馏蒸气流从中间塔进料位置以下的分馏塔中排出，并与LNG进料流热交换，并蒸发蒸馏物流，至少部分加热LNG进料流。 蒸馏蒸汽流被充分冷却以冷凝其至少一部分，形成第一冷凝流。 至少一部分第一冷凝流在上中间柱进料位置被引导至分馏塔。 塔顶馏出物流的一部分也与LNG进料流进行热交换，从而当LNG进料流被冷凝时，其还提供至少部分加热LNG，形成第二冷凝流。 将第二冷凝流分为“贫”LNG流和回流流，于此回流在顶塔进料位置供应至塔。 进料到塔的数量和温度有效地将塔顶温度维持在一个温度，从而使所需组分的主要部分在塔的底部液体产物中回收。

公开(公告)号：US20100236285A1

公开(公告)日：2010-09-23

申请号：US12689616

申请日：2010-01-19

Applicant: Andrew F. Johnke ,  Larry Lewis ,  John D. Wilkinson ,  Joe T. Lynch ,  Hank M. Hudson ,  Kyle T. Cuellar

Inventor： Andrew F. Johnke ,  Larry Lewis ,  John D. Wilkinson ,  Joe T. Lynch ,  Hank M. Hudson ,  Kyle T. Cuellar

IPC: F25J3/00

CPC classification number: F25J3/0209 ,  C10G5/06 ,  C10G2300/1025 ,  C10L3/10 ,  F25J3/0233 ,  F25J3/0238 ,  F25J3/0242 ,  F25J2200/02 ,  F25J2200/70 ,  F25J2205/04 ,  F25J2210/06 ,  F25J2240/02 ,  F25J2270/12 ,  F25J2270/60 ,  F25J2290/40 ,  F25J2290/42 ,  F28D7/0066 ,  F28D7/08 ,  G05D9/00 ,  G05D27/00

Abstract: A process and an apparatus are disclosed for the recovery of ethane, ethylene, propane, propylene, and heavier hydrocarbon components from a hydrocarbon gas stream in a compact processing assembly. The gas stream is cooled and divided into first and second streams. The first stream is further cooled to condense substantially all of it and is thereafter expanded to lower pressure and supplied as the top feed to an absorbing means inside the processing assembly. The second stream is also expanded to lower pressure and supplied as the bottom feed to the absorbing means. A distillation vapor stream is collected from the upper region of the absorbing means and directed into one or more heat exchange means inside the processing assembly to heat it while cooling the gas stream and the first stream. A distillation liquid stream is collected from the lower region of the absorbing means and directed into a heat and mass transfer means inside the processing assembly to heat it and strip out its volatile components while cooling the gas stream. The quantities and temperatures of the feeds to the absorbing means are effective to maintain the temperature of the upper region of the absorbing means at a temperature whereby the major portions of the desired components are recovered in the stripped distillation liquid stream.

Abstract translation: 公开了用于从紧凑加工组件中的烃气流中回收乙烷，乙烯，丙烷，丙烯和较重烃组分的方法和装置。 将气流冷却并分成第一和第二流。 将第一流进一步冷却以基本上将其全部冷凝，然后将其膨胀至较低压力，并将其作为顶部进料供给到处理组件内部的吸收装置。 第二流还被扩展成较低的压力并作为底部进料供应到吸收装置。 蒸馏蒸气流从吸收装置的上部区域收集并且被引导到处理组件内部的一个或多个热交换装置中，以在冷却气体流和第一流的同时对其进行加热。 从吸收装置的下部区域收集蒸馏液体流，并将其导入处理组件内部的热和质量传递装置，以加热它并在冷却气流的同时剥离其挥发性组分。 到吸收装置的进料的量和温度对于将吸收装置的上部区域的温度保持在所需组分的主要部分在汽提的蒸馏液体流中回收的温度是有效的。

公开(公告)号：US07631516B2

公开(公告)日：2009-12-15

申请号：US11749268

申请日：2007-05-16

Applicant: Kyle T. Cuellar ,  John D. Wilkinson ,  Hank M. Hudson

Inventor： Kyle T. Cuellar ,  John D. Wilkinson ,  Hank M. Hudson

IPC: F25J3/00

CPC classification number: F25J3/0233 ,  F25J3/0214 ,  F25J3/0238 ,  F25J2200/02 ,  F25J2200/76 ,  F25J2205/04 ,  F25J2210/06 ,  F25J2230/08 ,  F25J2230/60 ,  F25J2235/60 ,  F25J2240/02

Abstract: A process and apparatus for the recovery of ethane, ethylene, propane, propylene, and heavier hydrocarbons from a liquefied natural gas (LNG) stream is disclosed. The LNG feed stream is divided into two portions. The first portion is supplied to a fractionation column at an upper mid-column feed point. The second portion is directed in heat exchange relation with a warmer distillation stream rising from the fractionation stages of the column, whereby this portion of the LNG feed stream is partially vaporized and the distillation stream is totally condensed. The condensed distillation stream is divided into a “lean” LNG product stream and a reflux stream, whereupon the reflux stream is supplied to the column at a top column feed position. The partially vaporized portion of the LNG feed stream is separated into vapor and liquid streams which are thereafter supplied to the column at lower mid-column feed positions. The quantities and temperatures of the feeds to the column are effective to maintain the column overhead temperature at a temperature whereby the major portion of the desired components is recovered in the bottom liquid product from the column.

Abstract translation: 公开了一种用于从液化天然气（LNG）流中回收乙烷，乙烯，丙烷，丙烯和较重烃的方法和装置。 LNG进料流分为两部分。 将第一部分供应到上中间列进料点的分馏塔。 第二部分与从塔的分馏级上升的较热的蒸馏物流进行热交换，由此这部分LNG进料流部分蒸发，蒸馏物流完全冷凝。 冷凝的蒸馏物流被分成“贫”LNG产物流和回流物流，于是在顶塔进料位置将回流流供给塔。 LNG进料流的部分蒸发部分被分离成蒸汽和液体物流，然后在较低的中间塔进料位置将其送入塔中。 进料到塔的数量和温度有效地将塔顶温度维持在一个温度，从而使所需组分的主要部分在塔的底部液体产物中回收。

公开(公告)号：US20090282865A1

公开(公告)日：2009-11-19

申请号：US12423306

申请日：2009-04-14

Applicant: Tony L. Martinez ,  John D. Wilkinson ,  Hank M. Hudson ,  Kyle T. Cuellar

Inventor： Tony L. Martinez ,  John D. Wilkinson ,  Hank M. Hudson ,  Kyle T. Cuellar

IPC: F25J3/00

CPC classification number: F25J3/0209 ,  F25J3/0214 ,  F25J3/0233 ,  F25J3/0238 ,  F25J2200/02 ,  F25J2200/38 ,  F25J2200/72 ,  F25J2200/76 ,  F25J2200/78 ,  F25J2205/04 ,  F25J2210/02 ,  F25J2210/06 ,  F25J2210/62 ,  F25J2230/08 ,  F25J2230/60 ,  F25J2235/60 ,  F25J2240/02 ,  F25J2270/904 ,  F25J2290/50

Abstract: A process for the recovery of ethane, ethylene, propane, propylene, and heavier hydrocarbons from a liquefied natural gas (LNG) stream and a hydrocarbon gas stream is disclosed. The LNG feed stream is divided into two portions. The first portion is supplied to a fractionation column at a first upper mid-column feed point. The second portion is directed in heat exchange relation with a first portion of a warmer distillation stream rising from the fractionation stages of the column, whereby the LNG feed stream is partially heated and the distillation stream is totally condensed. The condensed distillation stream is divided into a “lean” LNG stream and a reflux stream, whereupon the reflux stream is supplied to the column at a top column feed position. The second portion of the LNG feed stream is heated further to partially or totally vaporize it and thereafter supplied to the column at a first lower mid-column feed position. The gas stream is divided into two portions. The second portion is expanded to the operating pressure of the column, then both portions are directed in heat exchange relation with the lean LNG stream and the second portion of the warmer distillation stream, whereby both portions of the gas stream are cooled, the lean LNG stream is vaporized, and the second portion of the distillation stream is heated. The first portion of the gas stream, which has been cooled to substantial condensation, is supplied to the column at a second upper mid-column feed point, and the second portion is supplied to the column at a second lower mid-column feed point. The quantities and temperatures of the feeds to the column are effective to maintain the column overhead temperature at a temperature whereby the major portion of the desired components is recovered in the bottom liquid product from the column.

Abstract translation: 公开了从液化天然气（LNG）流和烃气流中回收乙烷，乙烯，丙烷，丙烯和较重烃的方法。 LNG进料流分为两部分。 将第一部分供应到第一上中柱供料点的分馏塔。 第二部分与来自塔的分馏级的较高蒸馏流的第一部分进行热交换，由此LNG进料流被部分加热并且蒸馏流完全冷凝。 冷凝的蒸馏物流被分成“贫”LNG物流和回流物流，然后在顶部塔进料位置将回流物流供给到塔中。 LNG进料流的第二部分被进一步加热以使其部分或全部蒸发，然后在第一较低的中间塔进料位置处供给塔。 气流被分成两部分。 将第二部分扩展到塔的操作压力，然后两部分与贫LNG流和较冷蒸馏流的第二部分以热交换关系引导，由此气流的两部分被冷却，贫LNG 气流被蒸发，并且蒸馏流的第二部分被加热。 已经被冷却至大量冷凝的气流的第一部分在第二上部中间列进料点处供应到塔中，并且第二部分在第二较低的中间列进料点处供应到塔中。 进料到塔的数量和温度有效地将塔顶温度维持在一个温度，从而使所需组分的主要部分在塔的底部液体产物中回收。