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CA2619021A1 - Integrated ngl recovery and lng liquefaction - Google Patents

Integrated ngl recovery and lng liquefaction Download PDF

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Publication number
CA2619021A1
CA2619021A1 CA002619021A CA2619021A CA2619021A1 CA 2619021 A1 CA2619021 A1 CA 2619021A1 CA 002619021 A CA002619021 A CA 002619021A CA 2619021 A CA2619021 A CA 2619021A CA 2619021 A1 CA2619021 A1 CA 2619021A1
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CA
Canada
Prior art keywords
absorber
distillation column
stream
bottom product
plant
Prior art date
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Granted
Application number
CA002619021A
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French (fr)
Other versions
CA2619021C (en
Inventor
John Mak
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Fluor Technologies Corp
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Individual
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Publication of CA2619021A1 publication Critical patent/CA2619021A1/en
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Publication of CA2619021C publication Critical patent/CA2619021C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0228—Coupling of the liquefaction unit to other units or processes, so-called integrated processes
    • F25J1/0235—Heat exchange integration
    • F25J1/0237—Heat exchange integration integrating refrigeration provided for liquefaction and purification/treatment of the gas to be liquefied, e.g. heavy hydrocarbon removal from natural gas
    • F25J1/0239—Purification or treatment step being integrated between two refrigeration cycles of a refrigeration cascade, i.e. first cycle providing feed gas cooling and second cycle providing overhead gas cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
    • F25J1/0022—Hydrocarbons, e.g. natural gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
    • F25J1/0032—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
    • F25J1/0035—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by gas expansion with extraction of work
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0244—Operation; Control and regulation; Instrumentation
    • F25J1/0254—Operation; Control and regulation; Instrumentation controlling particular process parameter, e.g. pressure, temperature
    • F25J1/0255—Operation; Control and regulation; Instrumentation controlling particular process parameter, e.g. pressure, temperature controlling the composition of the feed or liquefied gas, e.g. to achieve a particular heating value of natural gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/0204—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the feed stream
    • F25J3/0209—Natural gas or substitute natural gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/0228—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream
    • F25J3/0233—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream separation of CnHm with 1 carbon atom or more
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/0228—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream
    • F25J3/0238—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream separation of CnHm with 2 carbon atoms or more
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/04—Processes or apparatus using separation by rectification in a dual pressure main column system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/74—Refluxing the column with at least a part of the partially condensed overhead gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/78—Refluxing the column with a liquid stream originating from an upstream or downstream fractionator column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/02—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum
    • F25J2205/04—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum in the feed line, i.e. upstream of the fractionation step
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/08—Cold compressor, i.e. suction of the gas at cryogenic temperature and generally without afterstage-cooler
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/60—Processes or apparatus involving steps for increasing the pressure of gaseous process streams the fluid being hydrocarbons or a mixture of hydrocarbons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2240/00—Processes or apparatus involving steps for expanding of process streams
    • F25J2240/02—Expansion of a process fluid in a work-extracting turbine (i.e. isentropic expansion), e.g. of the feed stream
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2260/00—Coupling of processes or apparatus to other units; Integrated schemes
    • F25J2260/20—Integration in an installation for liquefying or solidifying a fluid stream
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/90—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2280/00—Control of the process or apparatus
    • F25J2280/02—Control in general, load changes, different modes ("runs"), measurements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/10—Mathematical formulae, modeling, plot or curves; Design methods

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

Contemplated plants include a refluxed absorber and a distillation column, wherein the absorber is operated at a higher pressure than the distillation column to thereby produce a cryogenic pressurized lean gas. The lean gas is further compressed to a pressure suitable for liquefaction using energy from feed gas vapor expansion. Desired separation of C2 products is ensured by temperature control of the absorber and distillation column using flow ratios of various streams within the plant, and by dividing the separation process into two portions at different pressures.

Claims (20)

1. A plant for natural gas liquids recovery in which the plant is coupled with an LNG
liquefaction plant, comprising an absorber configured to receive an absorber feed stream and a first and a second reflux stream, and further configured to provide a bottom product stream;

a distillation column configured to receive a first portion of the bottom product stream and a second portion of the bottom product stream at different points, and wherein the distillation column is further configured to operate a pressure that is lower than an operating pressure in the absorber; and a control unit that is configured to control a flow ratio of (a) the feed stream to the second reflux stream and (b) the first portion of the bottom product stream to the second portion of the bottom product stream, wherein the flow ratio is a function of desired ethane recovery in the distillation column bottom product stream.
2. The plant of claim 1 further comprising at least one of a heat exchanger and a reflux condenser that are configured to heat the first portion of the bottom product stream, and still further comprising an expansion device configured to cool the second portion of the bottom product stream.
3. The plant of claim 1 wherein the distillation column is configured to produce a distillation column overhead, and wherein the plant further comprises a compressor that compresses the distillation column overhead to at least absorber pressure.
4. The plant of claim 3 further comprising a cooling device thermally coupled to the distillation column overhead and configured to cool the compressed distillation column overhead.
5. The plant of claim 4 wherein the cooled compressed distillation column overhead is the first reflux.
6. The plant of claim 1 wherein the absorber is configured to produce an absorber overhead product that has a temperature of equal or lower than -90 °F
and a pressure of between 500 psig and 700 psig.
7. The plant of claim 6 further comprising a compressor that is configured to receive the absorber overhead product and to compress the absorber overhead product to a pressure of at least 800 psig.
8. The plant of claim 7 wherein the compressor is operationally coupled to an expander that expands the absorber feed stream.
9. A method of processing a gas for delivery to an LNG liquefaction plant, comprising:
providing an absorber that receives an absorber feed stream and a first and a second reflux stream, and that produces a bottom product stream;

fluidly coupling the absorber to a distillation column such that a first portion of the bottom product stream and a second portion of the bottom product stream are fed to the distillation column at different points;

operating the distillation column at a pressure that is lower than an operating pressure of the absorber; and controlling a flow ratio of (a) the feed stream to the second reflux stream and (b) the first portion of the bottom product stream to the second portion of the bottom product stream as a function of desired ethane recovery in the distillation column bottom product stream.
10. The method of claim 9 further comprising a step of feeding a distillation column overhead product to the absorber.
11. The method of claim 10 wlierein the distillation column overhead product is compressed, cooled, and fed to the absorber as the first reflux stream.
12. The method of claim 9 wherein the distillation column is operated at a pressure between 300 psig and 500 psig, and wherein the absorber is operated at a pressure of between 500 psig and 800 psig.
13. The method of claim 9 further comprising a step of separating a cooled feed gas into a liquid portion and a vapor portion, and feeding the liquid portion after at least partial depressurization and warming into the distillation column.
14. The method of claim 13 wherein the vapor portion is split into a first and second stream to thereby form the second reflux stream and the absorber feed stream.
15. The method of claim 9 wherein the absorber produces a cryogenic absorber overhead stream, and further comprising a step of compressing the cryogenic absorber overhead stream to a pressure suitable for liquefaction.
16. The method of claim 15 wherein the step of compressing is driven by expansion of the absorber feed stream.
17. A method of variably recovering C2 from a feed gas to a LNG liquefaction plant comprising:

feeding an expanded and heated liquid portion of a feed gas to a distillation column and feeding a vapor portion of the feed gas to an absorber;

adjusting a flow ratio of an absorber feed to a second reflux to the absorber, and using a first reflux that is provided by a distillation column overhead, product to thereby control an absorber overhead temperature;

adjusting a temperature of an absorber bottom product that is fed to the distillation column to thereby control a distillation column overhead temperature; and operating the absorber at a higher pressure than the distillation column.
18. The method of claim 17 wherein the step of adjusting the absorber bottom product temperature is performed by heating at least one portion of the absorber bottom product in a heat exchanger.
19. The method of claim 17 wherein the step of adjusting the absorber bottom product temperature is performed by cooling at least another portion of the absorber bottom product using a JT valve.
20. The method of claim 17 wherein the step of adjusting the flow ratio of the absorber feed to the second reflux to the absorber is a function of desired C2 recovery.
CA2619021A 2005-04-20 2006-03-14 Integrated ngl recovery and lng liquefaction Expired - Fee Related CA2619021C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US67351805P 2005-04-20 2005-04-20
US60/673,518 2005-04-20
PCT/US2006/009103 WO2006115597A2 (en) 2005-04-20 2006-03-14 Integrated ngl recovery and lng liquefaction

Publications (2)

Publication Number Publication Date
CA2619021A1 true CA2619021A1 (en) 2007-11-02
CA2619021C CA2619021C (en) 2010-11-23

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CA2619021A Expired - Fee Related CA2619021C (en) 2005-04-20 2006-03-14 Integrated ngl recovery and lng liquefaction

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US (1) US20080271480A1 (en)
AU (1) AU2006240459B2 (en)
CA (1) CA2619021C (en)
EA (1) EA013357B1 (en)
WO (1) WO2006115597A2 (en)

Families Citing this family (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070157663A1 (en) * 2005-07-07 2007-07-12 Fluor Technologies Corporation Configurations and methods of integrated NGL recovery and LNG liquefaction
US20070012072A1 (en) * 2005-07-12 2007-01-18 Wesley Qualls Lng facility with integrated ngl extraction technology for enhanced ngl recovery and product flexibility
US20100000254A1 (en) * 2007-03-13 2010-01-07 Masataka Hiraide Method of producing gas hydrate
MX336113B (en) * 2007-08-14 2016-01-08 Fluor Tech Corp Configurations and methods for improved natural gas liquids recovery.
RU2488759C2 (en) * 2008-02-20 2013-07-27 Шелл Интернэшнл Рисерч Маатсхаппий Б.В. Method and device for cooling and separation of hydrocarbon flow
US9151537B2 (en) 2008-12-19 2015-10-06 Kanfa Aragon As Method and system for producing liquefied natural gas (LNG)
US9074814B2 (en) * 2010-03-31 2015-07-07 Ortloff Engineers, Ltd. Hydrocarbon gas processing
US9052136B2 (en) * 2010-03-31 2015-06-09 Ortloff Engineers, Ltd. Hydrocarbon gas processing
EA022672B1 (en) * 2009-02-17 2016-02-29 Ортлофф Инджинирс, Лтд. Hydrocarbon gas processing
US9933207B2 (en) * 2009-02-17 2018-04-03 Ortloff Engineers, Ltd. Hydrocarbon gas processing
US9939195B2 (en) * 2009-02-17 2018-04-10 Ortloff Engineers, Ltd. Hydrocarbon gas processing including a single equipment item processing assembly
US9052137B2 (en) 2009-02-17 2015-06-09 Ortloff Engineers, Ltd. Hydrocarbon gas processing
US9080811B2 (en) * 2009-02-17 2015-07-14 Ortloff Engineers, Ltd Hydrocarbon gas processing
US8881549B2 (en) * 2009-02-17 2014-11-11 Ortloff Engineers, Ltd. Hydrocarbon gas processing
US20100287982A1 (en) 2009-05-15 2010-11-18 Ortloff Engineers, Ltd. Liquefied Natural Gas and Hydrocarbon Gas Processing
CA2764636C (en) * 2009-06-11 2018-12-04 Ortloff Engineers, Ltd. Hydrocarbon gas processing including a single equipment item processing assembly
AR076506A1 (en) * 2009-06-11 2011-06-15 Sme Products Lp HYDROCARBON GAS PROCESSING
US9021832B2 (en) 2010-01-14 2015-05-05 Ortloff Engineers, Ltd. Hydrocarbon gas processing
US9057558B2 (en) * 2010-03-31 2015-06-16 Ortloff Engineers, Ltd. Hydrocarbon gas processing including a single equipment item processing assembly
US9068774B2 (en) * 2010-03-31 2015-06-30 Ortloff Engineers, Ltd. Hydrocarbon gas processing
CN102933273B (en) 2010-06-03 2015-05-13 奥特洛夫工程有限公司 Hydrocarbon gas processing
US10451344B2 (en) 2010-12-23 2019-10-22 Fluor Technologies Corporation Ethane recovery and ethane rejection methods and configurations
US20140026615A1 (en) * 2012-07-26 2014-01-30 Fluor Technologies Corporation Configurations and methods for deep feed gas hydrocarbon dewpointing
US20140075987A1 (en) 2012-09-20 2014-03-20 Fluor Technologies Corporation Configurations and methods for ngl recovery for high nitrogen content feed gases
US9803917B2 (en) 2012-12-28 2017-10-31 Linde Engineering North America, Inc. Integrated process for NGL (natural gas liquids recovery) and LNG (liquefaction of natural gas)
MX2016003093A (en) 2013-09-11 2016-05-26 Ortloff Engineers Ltd Hydrocarbon gas processing.
JP6591983B2 (en) 2013-09-11 2019-10-16 オートロフ・エンジニアーズ・リミテッド Hydrocarbon gas treatment
US9790147B2 (en) 2013-09-11 2017-10-17 Ortloff Engineers, Ltd. Hydrocarbon processing
CA2935851C (en) 2014-01-02 2022-05-03 Fluor Technologies Corporation Systems and methods for flexible propane recovery
US9939194B2 (en) * 2014-10-21 2018-04-10 Kellogg Brown & Root Llc Isolated power networks within an all-electric LNG plant and methods for operating same
FR3042983B1 (en) * 2015-11-03 2017-10-27 Air Liquide REFLUX OF DEMETHANIZATION COLUMNS
US10006701B2 (en) * 2016-01-05 2018-06-26 Fluor Technologies Corporation Ethane recovery or ethane rejection operation
US10330382B2 (en) 2016-05-18 2019-06-25 Fluor Technologies Corporation Systems and methods for LNG production with propane and ethane recovery
US10533794B2 (en) 2016-08-26 2020-01-14 Ortloff Engineers, Ltd. Hydrocarbon gas processing
US10551119B2 (en) 2016-08-26 2020-02-04 Ortloff Engineers, Ltd. Hydrocarbon gas processing
US10551118B2 (en) 2016-08-26 2020-02-04 Ortloff Engineers, Ltd. Hydrocarbon gas processing
US11402155B2 (en) * 2016-09-06 2022-08-02 Lummus Technology Inc. Pretreatment of natural gas prior to liquefaction
US11725879B2 (en) 2016-09-09 2023-08-15 Fluor Technologies Corporation Methods and configuration for retrofitting NGL plant for high ethane recovery
FR3056223B1 (en) * 2016-09-20 2020-05-01 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude PROCESS FOR THE PURIFICATION OF NATURAL LIQUEFIED GAS
RU2640976C1 (en) 2017-05-05 2018-01-12 Компания "Сахалин Энерджи Инвестмент Компани Лтд." Method for controlling liquefaction of natural gas
US11543180B2 (en) 2017-06-01 2023-01-03 Uop Llc Hydrocarbon gas processing
US11428465B2 (en) 2017-06-01 2022-08-30 Uop Llc Hydrocarbon gas processing
AU2018328192B2 (en) * 2017-09-06 2023-08-24 Linde Engineering North America, Inc. Methods for providing refrigeration in natural gas liquids recovery plants
US11112175B2 (en) 2017-10-20 2021-09-07 Fluor Technologies Corporation Phase implementation of natural gas liquid recovery plants
RU2685101C1 (en) * 2018-09-03 2019-04-16 Андрей Владиславович Курочкин Apparatus for low-temperature separation with dephlegmation of ltsd for extraction of hydrocarbons c2+ from natural gas (versions)
US12098882B2 (en) 2018-12-13 2024-09-24 Fluor Technologies Corporation Heavy hydrocarbon and BTEX removal from pipeline gas to LNG liquefaction
US12215922B2 (en) 2019-05-23 2025-02-04 Fluor Technologies Corporation Integrated heavy hydrocarbon and BTEX removal in LNG liquefaction for lean gases
RU2726329C1 (en) * 2019-01-09 2020-07-13 Андрей Владиславович Курочкин Low-temperature dephlegmation technology with rectification installation of natural gas deethanization channels (versions)
RU2726328C1 (en) * 2019-01-09 2020-07-13 Андрей Владиславович Курочкин Deethanization unit for natural gas using ltdf (versions)
RU2725989C1 (en) * 2019-02-01 2020-07-08 Андрей Владиславович Курочкин Apparatus for low-temperature dephlegmation with rectification of integrated production of non-waste field gas treatment (versions)
US11561043B2 (en) * 2019-05-23 2023-01-24 Bcck Holding Company System and method for small scale LNG production
EP3980483A4 (en) * 2019-06-05 2023-06-21 ConocoPhillips Company Two-stage heavies removal in lng processing
US10894929B1 (en) 2019-10-02 2021-01-19 Saudi Arabian Oil Company Natural gas liquids recovery process
RU2758754C1 (en) * 2021-03-10 2021-11-01 Андрей Владиславович Курочкин Method for reconstruction of low-temperature gas separation unit to increase in yield of gas condensate (options)
TW202309456A (en) 2021-05-14 2023-03-01 美商圖表能源與化學有限公司 Side draw reflux heavy hydrocarbon removal system and method
AU2023334591A1 (en) * 2022-09-02 2025-03-20 Honeywell Lng Llc Liquefaction of natural gas feeds containing hydrogen

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3224947A (en) * 1961-06-19 1965-12-21 Phillips Petroleum Co Apparatus for controlling vapor-liquid flow ratios within a fractionation column
US4157904A (en) * 1976-08-09 1979-06-12 The Ortloff Corporation Hydrocarbon gas processing
US4251249A (en) * 1977-01-19 1981-02-17 The Randall Corporation Low temperature process for separating propane and heavier hydrocarbons from a natural gas stream
FR2571129B1 (en) * 1984-09-28 1988-01-29 Technip Cie PROCESS AND PLANT FOR CRYOGENIC FRACTIONATION OF GASEOUS LOADS
US4617039A (en) * 1984-11-19 1986-10-14 Pro-Quip Corporation Separating hydrocarbon gases
US4596588A (en) * 1985-04-12 1986-06-24 Gulsby Engineering Inc. Selected methods of reflux-hydrocarbon gas separation process
US4960702A (en) * 1985-09-06 1990-10-02 Codon Methods for recovery of tissue plasminogen activator
US5275005A (en) * 1992-12-01 1994-01-04 Elcor Corporation Gas processing
US5685170A (en) * 1995-11-03 1997-11-11 Mcdermott Engineers & Constructors (Canada) Ltd. Propane recovery process
US5799507A (en) * 1996-10-25 1998-09-01 Elcor Corporation Hydrocarbon gas processing
US5890378A (en) * 1997-04-21 1999-04-06 Elcor Corporation Hydrocarbon gas processing
US5992175A (en) * 1997-12-08 1999-11-30 Ipsi Llc Enhanced NGL recovery processes
US6116050A (en) * 1998-12-04 2000-09-12 Ipsi Llc Propane recovery methods
US6401486B1 (en) * 2000-05-18 2002-06-11 Rong-Jwyn Lee Enhanced NGL recovery utilizing refrigeration and reflux from LNG plants
AU2001271587B2 (en) * 2000-08-11 2004-09-02 Fluor Technologies Corporation High propane recovery process and configurations
US6526777B1 (en) * 2001-04-20 2003-03-04 Elcor Corporation LNG production in cryogenic natural gas processing plants
US6742358B2 (en) * 2001-06-08 2004-06-01 Elkcorp Natural gas liquefaction
EP1412682A1 (en) * 2001-06-29 2004-04-28 ExxonMobil Upstream Research Company Process for recovering ethane and heavier hydrocarbons from a methane-rich pressurized liquid mixture
WO2003095913A1 (en) * 2002-05-08 2003-11-20 Fluor Corporation Configuration and process for ngl recovery using a subcooled absorption reflux process
US7051553B2 (en) * 2002-05-20 2006-05-30 Floor Technologies Corporation Twin reflux process and configurations for improved natural gas liquids recovery
US7069744B2 (en) * 2002-12-19 2006-07-04 Abb Lummus Global Inc. Lean reflux-high hydrocarbon recovery process
US6662589B1 (en) * 2003-04-16 2003-12-16 Air Products And Chemicals, Inc. Integrated high pressure NGL recovery in the production of liquefied natural gas
US7204100B2 (en) * 2004-05-04 2007-04-17 Ortloff Engineers, Ltd. Natural gas liquefaction
MX336113B (en) * 2007-08-14 2016-01-08 Fluor Tech Corp Configurations and methods for improved natural gas liquids recovery.

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