DE102011014984A1 - Method for liquefying hydrocarbon-rich fraction, particularly natural gas stream, involves superheating refrigerant of refrigerant circuit against refrigerant of another refrigerant circuit - Google Patents
Method for liquefying hydrocarbon-rich fraction, particularly natural gas stream, involves superheating refrigerant of refrigerant circuit against refrigerant of another refrigerant circuit Download PDFInfo
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- DE102011014984A1 DE102011014984A1 DE201110014984 DE102011014984A DE102011014984A1 DE 102011014984 A1 DE102011014984 A1 DE 102011014984A1 DE 201110014984 DE201110014984 DE 201110014984 DE 102011014984 A DE102011014984 A DE 102011014984A DE 102011014984 A1 DE102011014984 A1 DE 102011014984A1
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- refrigerant
- refrigeration
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- rich fraction
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000004215 Carbon black (E152) Substances 0.000 title claims abstract description 19
- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 19
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 19
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims description 26
- 239000003345 natural gas Substances 0.000 title claims description 13
- 238000005057 refrigeration Methods 0.000 claims abstract description 59
- 238000004781 supercooling Methods 0.000 claims abstract description 9
- 238000013021 overheating Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 241001295925 Gegenes Species 0.000 description 2
- 239000003949 liquefied natural gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
Classifications
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- 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
- F25J1/0047—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 an "external" refrigerant stream in a closed vapor compression cycle
- F25J1/0052—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 an "external" refrigerant stream in a closed vapor compression cycle by vaporising a liquid refrigerant 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
- 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
- F25J1/0211—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 using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle
- F25J1/0214—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 using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle as a dual level refrigeration cascade with at least one MCR cycle
-
- 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
- F25J1/0211—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 using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle
- F25J1/0217—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 using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle as at least a three level refrigeration cascade with at least one MCR cycle
-
- 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
- F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
- F25J1/0262—Details of the cold heat exchange system
- F25J1/0263—Details of the cold heat exchange system using different types of heat exchangers
-
- 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
- F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
- F25J1/0262—Details of the cold heat exchange system
- F25J1/0264—Arrangement of heat exchanger cores in parallel with different functions, e.g. different cooling streams
- F25J1/0265—Arrangement of heat exchanger cores in parallel with different functions, e.g. different cooling streams comprising cores associated exclusively with the cooling of a refrigerant stream, e.g. for auto-refrigeration or economizer
-
- 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
- F25J1/0279—Compression of refrigerant or internal recycle fluid, e.g. kind of compressor, accumulator, suction drum etc.
- F25J1/0292—Refrigerant compression by cold or cryogenic suction of the refrigerant 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
- F25J1/02—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
- F25J1/0279—Compression of refrigerant or internal recycle fluid, e.g. kind of compressor, accumulator, suction drum etc.
- F25J1/0295—Shifting of the compression load between different cooling stages within a refrigerant cycle or within a cascade refrigeration 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
- F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
- F25J2290/12—Particular process parameters like pressure, temperature, ratios
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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)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Verflüssigen einer Kohlenwasserstoff-reichen Fraktion, insbesondere eines Erdgasstromes,
- – durch indirekten Wärmetausch der Kohlenwasserstoff-reichen Fraktion mit den Kältemitteln einer Kältekreislaufkaskade,
- – wobei wenigstens einer der Kältekreisläufe der Unterkühlung der verflüssigten Kohlenwasserstoff-reichen Fraktion dient und
- – das Kältemittel dieses Kältekreislaufes dem Kreislaufverdichter in überhitztem Zustand zugeführt wird.
- By indirect heat exchange of the hydrocarbon-rich fraction with the refrigerants of a refrigeration cycle cascade,
- - wherein at least one of the refrigeration circuits of the subcooling of the liquefied hydrocarbon-rich fraction is used and
- - The refrigerant of this refrigeration cycle is supplied to the cycle compressor in the overheated state.
Ein gattungsgemäßes Verfahren zum Verflüssigen einer Kohlenwasserstoff-reichen Fraktion ist beispielsweise aus dem
Ferner sind Verflüssigungsverfahren bekannt, bei denen die Kältekreislaufkaskade aus lediglich zwei Kältekreisläufen besteht. Bei dem eingangs beschriebenen Verflüssigungsverfahren zirkulieren innerhalb der drei Kältekreisläufe Kältemittelgemische. Diese werden nach ihrer vollständigen Verdampfung überhitzt und anschließend mittels sog. kaltansaugender Verdichter auf den jeweils gewünschten Kreislaufdruck verdichtet. Anstelle der vorbeschriebenen Kältemittelgemische können auch Reinstoffe in wenigstens einem oder sämtlichen Kältekreisläufen Verwendung finden.Furthermore, liquefaction processes are known in which the refrigeration cycle cascade consists of only two refrigeration cycles. In the liquefaction process described above, refrigerant mixtures circulate within the three refrigeration circuits. These are superheated after their complete evaporation and then compressed by means of so-called. Kaltansaugender compressor to the particular desired circuit pressure. Instead of the above-described refrigerant mixtures, pure substances can also be used in at least one or all of the refrigeration cycles.
Von Nachteil bei dem in dem
Aus dem
Eine derartige Verfahrensführung erfordert jedoch die Wiedereinspeisung eines zweiphasigen Kältemittels in einen Wärmetauscher. Dies macht es erforderlich, die beiden Kältemittelphasen gasförmig und flüssig gleichmäßig auf ggf. parallele Wärmetauscher und innerhalb des bzw. der Wärmetauscher zu verteilen. Eine angemessene Gleichverteilung erfordert jedoch einen hohen Aufwand bzgl. der Rohrleitungsführung sowie Regelung. Eine unzureichende Gleichverteilung kann in einer Minderleistung des Verflüssigungsprozesses resultieren.However, such a process requires the reintroduction of a two-phase refrigerant into a heat exchanger. This makes it necessary to distribute the two refrigerant phases gaseous and liquid uniformly to possibly parallel heat exchangers and within the heat exchanger (s). However, an adequate uniform distribution requires a high outlay in terms of piping and control. Inadequate uniformity can result in reduced performance of the liquefaction process.
Aufgabe der vorliegenden Erfindung ist es, ein gattungsgemäßes Verfahren zum Verflüssigen einer Kohlenwasserstoff-reichen Fraktion anzugeben, das die vorgenannten Nachteile vermeidet.Object of the present invention is to provide a generic method for liquefying a hydrocarbon-rich fraction, which avoids the aforementioned disadvantages.
Zur Lösung dieser Aufgabe wird ein Verfahren zum Verflüssigen einer Kohlenwasserstoff-reichen Fraktion vorgeschlagen, das dadurch gekennzeichnet ist, dass das Kältemittel des der Unterkühlung dienenden Kältekreislaufes gegen das Kältemittel des oder eines der anderen Kältekreisläufe soweit überhitzt wird, dass eine Saugtemperatur des Kreislaufverdichters von –50°C oder höher erreicht wird.To solve this problem, a method for liquefying a hydrocarbon-rich fraction is proposed, which is characterized in that the refrigerant of the supercooling refrigerant circuit is overheated against the refrigerant of the or one of the other refrigeration circuits so far that a suction temperature of the cycle compressor of -50 ° C or higher is reached.
Der Begriff ”Kältemittel” stehe im Folgenden sowohl für Reinstoffe als auch für Gemische. Analog hierzu stehe der Begriff ”Kältekreislauf” für Kreisläufe, in denen Reinstoffe oder Gemische zirkulieren.The term "refrigerant" hereinafter stands for both pure substances and mixtures. Similarly, the term "refrigeration cycle" stands for cycles in which pure substances or mixtures circulate.
Weitere vorteilhafte Ausgestaltungen des erfindungsgemäßen Verfahrens zum Verflüssigen einer Kohlenwasserstoff-reichen Fraktion, die Gegenstände der abhängigen Patentansprüche darstellen, sind dadurch gekennzeichnet, dass
- – das Kältemittel des der Unterkühlung dienenden Kältekreislaufes gegen das Kältemittel des oder eines der anderen Kältekreisläufe soweit überhitzt wird, dass eine Saugtemperatur des Kreislaufverdichters (C', C3) von –30°C oder höher erreicht wird,
- – sofern die Kältekreislaufkaskade drei Kältekreisläufe umfasst, von denen der erste der Vorkühlung, der zweite der Verflüssigung und der dritte der Unterkühlung der zu verflüssigenden Kohlenwasserstoff-reichen Fraktion dient, das Kältemittel des der Unterkühlung dienenden Kältekreislaufes gegen das Kältemittel des der Verflüssigung dienenden Kältekreislaufes überhitzt wird,
- – der Mengenstrom desjenigen Kältemittels, das der Überhitzung des Kältemittels des Unterkühlungs-Kältekreislaufes dient, regelbar ist, und
- – der Wärmetausch zwischen dem zu überhitzenden Kältemittel des der Unterkühlung dienenden Kältekreislaufes und dem Kältemittel des oder einem der anderen Kältekreisläufe in einem gewickelten Wärmetauscher erfolgt.
- The refrigerant of the refrigeration circuit serving for subcooling is overheated against the refrigerant of the or one of the other refrigeration circuits so that a suction temperature of the cycle compressor (C ', C3) of -30 ° C. or higher is reached,
- - If the refrigeration cycle cascade comprises three refrigeration circuits, of which the first of the pre-cooling, the second of the liquefaction and the third of the subcooling of the hydrocarbon-rich fraction to be liquefied, the refrigerant of the subcooling refrigerant circuit is overheated against the refrigerant of the liquefaction serving refrigeration circuit .
- - The flow rate of that refrigerant, which is used to overheat the refrigerant of the subcooling refrigeration cycle, is adjustable, and
- - The heat exchange between the refrigerant to be overheated serving the subcooling refrigerant circuit and the refrigerant of the or one of the other refrigeration circuits in a wound heat exchanger.
Das erfindungsgemäße Verfahren zum Verflüssigen einer Kohlenwasserstoff-reichen Fraktion sowie weitere vorteilhafte Ausgestaltungen desselben seien nachfolgend anhand der in den
Hierbei ist in der
Der zu verflüssigende Erdgasstrom wird bei dem in der
Der für die Vorkühlung und Verflüssigung des Erdgasstromes verwendete Kältekreislauf weist eine ein- oder mehrstufig ausgelegte Verdichtereinheit C auf. Das mittels dieser verdichtete Kältemittel wird über Leitung
Der der Unterkühlung des Erdgasstromes dienende Kältekreislauf weist ebenfalls eine ein- oder mehrstufig ausgelegte Verdichtereinheit C' auf. Das mittels dieser verdichtete Kältemittel wird über Leitung
Um die erfindungsgemäß gewünschte Überhitzung des Kältemittels des der Unterkühlung dienenden Kältekreislaufes zu erreichen, wird ein Teilstrom des in dem ersten Kältekreislauf zirkulierenden Kältemittels über Leitung
Anschließend wird der der Überhitzung des Kältemittels
Die vorerwähnten Wärmetauscher E3' und E'' können in einer beliebigen Bauart ausgeführt werden. auch bspw. als Geradrohrtauscher, die Ausführung als gewickelter Wärmetauscher und der Einbau in einen mit dem Wärmetauscher E3 bzw. E' gemeinsamen Mantel stellt eine bevorzugte Lösung dar.The aforementioned heat exchangers E3 'and E' 'can be made in any type. Also, for example. As a straight tube exchanger, the design as a coiled heat exchanger and the installation in a common to the heat exchanger E3 or E 'jacket is a preferred solution.
Die in der
Der zu verflüssigende Erdgasstrom, der über Leitung
Der der Vorkühlung des zu verflüssigenden Erdgasstromes dienende erste Kältekreislauf weist eine ein- oder mehrstufig ausgelegte Verdichtereinheit C1 auf. Das verdichtete Kältemittel wird dem Wärmetauscher E1 über Leitung
Auch der zweite, der Verflüssigung des Erdgasstromes dienende Kältekreislauf weist eine ein- oder mehrstufig ausgelegte Verdichtereinheit C2 auf. Das mittels ihr verdichtete Kältemittel wird über Leitung
Auch der dritte, der Unterkühlung des verflüssigten Erdgasstromes dienende Kältekreislauf weist eine ein- oder mehrstufig ausgelegte Verdichtereinheit C3 auf. Das mittels ihr verdichtete Kältemittel wird über die Leitung
Um die erfindungsgemäß gewünschte Überhitzung des Kältemittels des der Unterkühlung dienenden Kältekreislaufes zu erreichen, wird ein Teilstrom des Kältemittels des zweiten Kältekreislaufs über Leitung
Das erfindungsgemäße Verfahren zum Verflüssigen einer Kohlenwasserstoff-reichen Fraktion ermöglicht die Realisierung einer ausreichend großen Überhitzung des der Unterkühlung der Kohlenwasserstoff-reichen Fraktion dienenden Kältemittels. Eine wie in dem eingangs genannten
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- EP 0975923 [0002, 0004, 0020] EP 0975923 [0002, 0004, 0020]
- US 6742357 [0005, 0025] US 6742357 [0005, 0025]
Claims (5)
Priority Applications (1)
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DE201110014984 DE102011014984A1 (en) | 2011-03-24 | 2011-03-24 | Method for liquefying hydrocarbon-rich fraction, particularly natural gas stream, involves superheating refrigerant of refrigerant circuit against refrigerant of another refrigerant circuit |
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DE201110014984 DE102011014984A1 (en) | 2011-03-24 | 2011-03-24 | Method for liquefying hydrocarbon-rich fraction, particularly natural gas stream, involves superheating refrigerant of refrigerant circuit against refrigerant of another refrigerant circuit |
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DE102011014984A1 true DE102011014984A1 (en) | 2012-09-27 |
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DE201110014984 Withdrawn DE102011014984A1 (en) | 2011-03-24 | 2011-03-24 | Method for liquefying hydrocarbon-rich fraction, particularly natural gas stream, involves superheating refrigerant of refrigerant circuit against refrigerant of another refrigerant circuit |
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0975923A1 (en) | 1997-04-18 | 2000-02-02 | Linde Aktiengesellschaft | Method for liquefying a stream rich in hydrocarbons |
US6742357B1 (en) | 2003-03-18 | 2004-06-01 | Air Products And Chemicals, Inc. | Integrated multiple-loop refrigeration process for gas liquefaction |
-
2011
- 2011-03-24 DE DE201110014984 patent/DE102011014984A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0975923A1 (en) | 1997-04-18 | 2000-02-02 | Linde Aktiengesellschaft | Method for liquefying a stream rich in hydrocarbons |
US6742357B1 (en) | 2003-03-18 | 2004-06-01 | Air Products And Chemicals, Inc. | Integrated multiple-loop refrigeration process for gas liquefaction |
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