DE102011104725A1 - Method for liquefying hydrocarbon rich fraction, particularly of natural gas, involves liquefying refrigerant mixture of refrigerant circuit against hydrocarbon-rich fraction - Google Patents
Method for liquefying hydrocarbon rich fraction, particularly of natural gas, involves liquefying refrigerant mixture of refrigerant circuit against hydrocarbon-rich fraction Download PDFInfo
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- DE102011104725A1 DE102011104725A1 DE201110104725 DE102011104725A DE102011104725A1 DE 102011104725 A1 DE102011104725 A1 DE 102011104725A1 DE 201110104725 DE201110104725 DE 201110104725 DE 102011104725 A DE102011104725 A DE 102011104725A DE 102011104725 A1 DE102011104725 A1 DE 102011104725A1
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- hydrocarbon
- refrigerant mixture
- fraction
- compressed
- rich fraction
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 31
- 239000000203 mixture Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 24
- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 21
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 21
- 239000004215 Carbon black (E152) Substances 0.000 title claims abstract description 20
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims description 14
- 239000003345 natural gas Substances 0.000 title claims description 7
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 230000005494 condensation Effects 0.000 claims abstract description 11
- 238000009833 condensation Methods 0.000 claims abstract description 9
- 238000009835 boiling Methods 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 9
- 238000005057 refrigeration Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 241001295925 Gegenes Species 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 210000003918 fraction a Anatomy 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
- 206010016352 Feeling of relaxation Diseases 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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
- F25J1/0002—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
- F25J1/0055—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 originating from an incorporated cascade
-
- 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
- F25J1/0212—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 single flow 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
- F25J1/0279—Compression of refrigerant or internal recycle fluid, e.g. kind of compressor, accumulator, suction drum etc.
- F25J1/0291—Refrigerant compression by combined gas compression and liquid pumping
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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 von Erdgas, wobei
- a) die Kohlenwasserstoff-reiche Fraktion gegen das Kältemittelgemisch eines Kältekreislaufes verflüssigt wird,
- b) das Kältemittelgemisch wenigstens zweistufig verdichtet wird,
- c) das verdichtete Kältemittelgemisch wenigstens nach der vorletzten Verdichterstufe partiell kondensiert wird,
- d) die dabei anfallende, tiefersiedende Gasfraktion auf den Enddruck verdichtet wird,
- e) das auf den Enddruck verdichtete Kältemittelgemisch partiell kondensiert wird, und
- f) die dabei anfallende tiefersiedende Gasfraktion und eine Flüssigfraktion des Kältemittelgemisches auf unterschiedlichen Temperaturniveaus kälteleistend entspannt und gegen die abzukühlende Kohlenwasserstoff-reiche Fraktion angewärmt werden.
- a) the hydrocarbon-rich fraction is liquefied against the refrigerant mixture of a refrigeration cycle,
- b) the refrigerant mixture is compressed at least in two stages,
- c) the compressed refrigerant mixture is partially condensed at least after the penultimate compressor stage,
- d) the accumulating, lower-boiling gas fraction is compressed to the final pressure,
- e) the condensed to the final pressure refrigerant mixture is partially condensed, and
- f) the resulting lower-boiling gas fraction and a liquid fraction of the refrigerant mixture at different temperature levels are cooled and cooled against the hydrocarbon-rich fraction to be cooled.
Ein gattungsgemäßes Verfahren zum Verflüssigen einer Kohlenwasserstoff-reichen Fraktion ist beispielsweise aus der nicht vorveröffentilchten
Wie in der
Bei der in der Figur der der
Aufgabe der vorliegenden Erfindung ist es, ein gattungsgemäßes Verfahren zum Verflüssigen einer Kohlenwasserstoff-reichen Fraktion anzugeben, das die vorgenannten Nachteile vermeidet und insbesondere einen geringeren spezifischen Energieaufwand aufweist.Object of the present invention is to provide a generic method for liquefying a hydrocarbon-rich fraction, which avoids the aforementioned disadvantages and in particular has a lower specific energy consumption.
Zur Lösung dieser Aufgabe wird ein Verfahren zum Verflüssigen einer Kohlenwasserstoff-reichen Fraktion vorgeschlagen, das dadurch gekennzeichnet ist, dass
- g) die bei der erstmaligen partiellen Kondensation anfallende Flüssigfraktion auf den Enddruck gepumpt und dem auf den Enddruck verdichteten Kältemittelgemisch zugemischt und
- h) die bei der partiellen Kondensation des auf den Enddruck verdichteten Kältemittelgemisches anfallende höhersiedende Flüssigfraktion gegen sich selbst die abzukühlende Kohlenwasserstoff-reiche Fraktion angewärmt wird.
- g) the liquid fraction obtained during the initial partial condensation is pumped to the final pressure and admixed with the refrigerant mixture compressed to the final pressure, and
- h) the higher-boiling liquid fraction obtained in the partial condensation of the refrigerant mixture compressed to the final pressure is warmed to itself against the hydrocarbon-rich fraction to be cooled.
Erfindungsgemäß wird nunmehr mittels wenigstens einer Pumpe die bei der erstmaligen partiellen Kondensation anfallende Flüssigfraktion aus dem sog. Mitteldruckabscheider in bzw. vor den sog. Hochdruckabscheider gefördert. Durch das Vorsehen dieser Pumpe wird die zweite Verdichterstufe entlastet, woraus günstigere Verbrauchszahlen resultieren. Die spezifische Verflüssigungsleistung des erfindungsgemäßen Verfahrens ist gegenüber einem Verflüssigungsverfahren, wie es beispielsweise in der
Des Weiteren wird die bei der partiellen Kondensation des auf den Enddruck verdichteten Kältemittelgemisches anfallende höhersiedende Flüssigfraktion dem Hauptwärmetauscher zugeführt, unterkühlt, entspannt, angewärmt und am warmen Ende des Hauptwärmetauschers mit der verdampften leichten Kältemittelfraktion gemischt. Alternative können die beiden Fraktionen bereits vor der Anwärmung zweiphasig gemischt werden. Das flüssige Hochdruck-Kältemittel besitzt ein leichteres Molekulargewicht und verdampft deshalb bei niedrigeren Temperaturen. Dies ergibt zusätzlich günstigere Verbrauchszahlen für den erfindungsgemäßen Verflüssigungsprozess.Furthermore, the higher-boiling liquid fraction resulting from the partial condensation of the refrigerant mixture compressed to the final pressure is fed to the main heat exchanger, subcooled, expanded, warmed and mixed with the vaporized light refrigerant fraction at the warm end of the main heat exchanger. Alternatively, the two fractions can be mixed in two phases before heating. The liquid high-pressure refrigerant has a lighter molecular weight and therefore evaporates at lower temperatures Temperatures. This additionally results in more favorable consumption figures for the liquefaction process according to the invention.
Weitere vorteilhafte Ausgestaltungen des erfindungsgemäßen Verfahrens zum Verflüssigen einer Kohlenwasserstoff-reichen Fraktion, die Gegenstände der abhängigen Patentansprüche darstellen, sind dadurch gekennzeichnet, dass die beiden Fraktionen getrennt voneinander verdampft werden oder die beiden Fraktionen nach ihrer kälteleistenden Entspannung zusammengeführt und gemeinsam verdampft werden.Further advantageous embodiments of the process according to the invention for liquefying a hydrocarbon-rich fraction, which are subject matters of the dependent claims, are characterized in that the two fractions are evaporated separately or the two fractions are brought together after their cold-relaxing relaxation and evaporated together.
Das erfindungsgemäße Verfahren zum Verflüssigen einer Kohlenwasserstoff-reichen Fraktion sowie weitere Ausgestaltungen desselben seien nachfolgend anhand des in der Figur dargestellten Ausführungsbeispieles näher erläutert.The inventive method for liquefying a hydrocarbon-rich fraction and further embodiments thereof are described below with reference to the embodiment shown in the figure.
Die Figur zeigt einen Erdgas-Verflüssigungsprozess, bei dem das zu verflüssigende Erdgas über Leitung A einem Wärmetauscher E zugeführt, nach erfolgter Verflüssigung gegen einen Kältekreislauf über die Leitung B abgezogen und seiner weiteren Verwendung bzw. Speicherung zugeführt wird. Nicht dargestellt in der Figur sind ggf. vorzusehende Vorbehandlungsschritte des zu verflüssigenden Erdgases sowie eine ggf. vorzusehende Abtrennung von Stickstoff und/oder C2+-Kohlenwasserstoffen.The figure shows a natural gas liquefaction process in which the natural gas to be liquefied via line A a heat exchanger E supplied, deducted after liquefaction against a refrigeration cycle via the line B and its further use or storage is supplied. Not shown in the figure are possibly to be provided pre-treatment steps of the natural gas to be liquefied as well as a possibly to be provided separation of nitrogen and / or C 2+ hydrocarbons.
Das zu verdichtende Kältemittelgemisch des Kältekreislaufes wird über Leitung
Die über Leitung
Über Leitung
Die aus dem Sumpf des Abscheiders D3 über Leitung
Alternativ zu der vorbeschriebenen Verfahrensweise kann die höhersiedende Flüssigfraktion bereits vor ihrer Anwärmung mit der nicht oder nur teilweise angewärmten entspannten tiefersiedenden Flüssigfraktion zweiphasig gemischt werden; hierzu wird die im Ventil b entspannte Fraktion der im Ventil a entspannten Fraktion in der Leitung
Das erfindungsgemäße Verfahren zum Verflüssigen einer Kohlenwasserstoff-reichen Fraktion schafft ein Verflüssigungsverfahren, dessen spezifische Verflüssigungsleistung gegenüber einem zum Stand der Technik zählenden Verfahren, wie es beispielsweise in der
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
- DE 102010011052 [0002, 0002, 0003, 0004, 0004, 0007, 0017] DE 102010011052 [0002, 0002, 0003, 0004, 0004, 0007, 0017]
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE201110104725 DE102011104725A1 (en) | 2011-06-08 | 2011-06-08 | Method for liquefying hydrocarbon rich fraction, particularly of natural gas, involves liquefying refrigerant mixture of refrigerant circuit against hydrocarbon-rich fraction |
Applications Claiming Priority (1)
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DE201110104725 DE102011104725A1 (en) | 2011-06-08 | 2011-06-08 | Method for liquefying hydrocarbon rich fraction, particularly of natural gas, involves liquefying refrigerant mixture of refrigerant circuit against hydrocarbon-rich fraction |
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DE102011104725A1 true DE102011104725A1 (en) | 2012-12-13 |
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DE201110104725 Withdrawn DE102011104725A1 (en) | 2011-06-08 | 2011-06-08 | Method for liquefying hydrocarbon rich fraction, particularly of natural gas, involves liquefying refrigerant mixture of refrigerant circuit against hydrocarbon-rich fraction |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9441877B2 (en) | 2010-03-17 | 2016-09-13 | Chart Inc. | Integrated pre-cooled mixed refrigerant system and method |
WO2017103536A1 (en) * | 2015-12-17 | 2017-06-22 | Engie | Hybrid method for liquefying a fuel gas and facility for implementing same |
US10480851B2 (en) | 2013-03-15 | 2019-11-19 | Chart Energy & Chemicals, Inc. | Mixed refrigerant system and method |
US10663221B2 (en) | 2015-07-08 | 2020-05-26 | Chart Energy & Chemicals, Inc. | Mixed refrigerant system and method |
US11408673B2 (en) | 2013-03-15 | 2022-08-09 | Chart Energy & Chemicals, Inc. | Mixed refrigerant system and method |
US11428463B2 (en) | 2013-03-15 | 2022-08-30 | Chart Energy & Chemicals, Inc. | Mixed refrigerant system and method |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010011052A1 (en) | 2010-03-11 | 2011-09-15 | Linde Aktiengesellschaft | Process for liquefying a hydrocarbon-rich fraction |
-
2011
- 2011-06-08 DE DE201110104725 patent/DE102011104725A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010011052A1 (en) | 2010-03-11 | 2011-09-15 | Linde Aktiengesellschaft | Process for liquefying a hydrocarbon-rich fraction |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9441877B2 (en) | 2010-03-17 | 2016-09-13 | Chart Inc. | Integrated pre-cooled mixed refrigerant system and method |
US10502483B2 (en) | 2010-03-17 | 2019-12-10 | Chart Energy & Chemicals, Inc. | Integrated pre-cooled mixed refrigerant system and method |
US10480851B2 (en) | 2013-03-15 | 2019-11-19 | Chart Energy & Chemicals, Inc. | Mixed refrigerant system and method |
US11408673B2 (en) | 2013-03-15 | 2022-08-09 | Chart Energy & Chemicals, Inc. | Mixed refrigerant system and method |
US11428463B2 (en) | 2013-03-15 | 2022-08-30 | Chart Energy & Chemicals, Inc. | Mixed refrigerant system and method |
US10663221B2 (en) | 2015-07-08 | 2020-05-26 | Chart Energy & Chemicals, Inc. | Mixed refrigerant system and method |
US11408676B2 (en) | 2015-07-08 | 2022-08-09 | Chart Energy & Chemicals, Inc. | Mixed refrigerant system and method |
WO2017103536A1 (en) * | 2015-12-17 | 2017-06-22 | Engie | Hybrid method for liquefying a fuel gas and facility for implementing same |
FR3045795A1 (en) * | 2015-12-17 | 2017-06-23 | Engie | HYBRID PROCESS FOR THE LIQUEFACTION OF A COMBUSTIBLE GAS AND INSTALLATION FOR ITS IMPLEMENTATION |
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