DE102007029434A1 - Process for the disposal of carbon dioxide - Google Patents

Process for the disposal of carbon dioxide Download PDF

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Publication number
DE102007029434A1
DE102007029434A1 DE102007029434A DE102007029434A DE102007029434A1 DE 102007029434 A1 DE102007029434 A1 DE 102007029434A1 DE 102007029434 A DE102007029434 A DE 102007029434A DE 102007029434 A DE102007029434 A DE 102007029434A DE 102007029434 A1 DE102007029434 A1 DE 102007029434A1
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carbon dioxide
fraction
liquefaction
liquefaction process
fractionation
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DE102007029434A
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German (de)
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Heinz Dr. Bauer
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Linde GmbH
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Linde GmbH
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Priority to DE102007029434A priority Critical patent/DE102007029434A1/en
Priority to CN200880021862A priority patent/CN101874187A/en
Priority to RU2010102252/06A priority patent/RU2482407C2/en
Priority to AU2008267511A priority patent/AU2008267511A1/en
Priority to MX2009013404A priority patent/MX2009013404A/en
Priority to US12/666,664 priority patent/US20100212354A1/en
Priority to MYPI20095486A priority patent/MY177037A/en
Priority to PCT/EP2008/004505 priority patent/WO2009000393A2/en
Publication of DE102007029434A1 publication Critical patent/DE102007029434A1/en
Priority to NO20100108A priority patent/NO20100108L/en
Withdrawn legal-status Critical Current

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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
    • 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
    • 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"
    • F25J1/0045—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 vaporising a liquid return 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
    • F25J1/003—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
    • F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
    • F25J1/0095—Oxides of carbon, e.g. CO2
    • 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
    • F25J1/0245—Different modes, i.e. 'runs', of operation; Process control
    • F25J1/0249—Controlling refrigerant inventory, i.e. composition or quantity
    • F25J1/025—Details related to the refrigerant production or treatment, e.g. make-up supply from feed gas itself
    • 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
    • F25J1/0275—Construction and layout of liquefaction equipments, e.g. valves, machines adapted for special use of the liquefaction unit, e.g. portable or transportable devices
    • F25J1/0277—Offshore use, e.g. during shipping
    • F25J1/0278—Unit being stationary, e.g. on floating barge or fixed platform
    • 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
    • F25J2220/00—Processes or apparatus involving steps for the removal of impurities
    • F25J2220/60—Separating impurities from natural gas, e.g. mercury, cyclic hydrocarbons
    • F25J2220/66—Separating acid gases, e.g. CO2, SO2, H2S or RSH
    • 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
    • F25J2260/80—Integration in an installation using carbon dioxide, e.g. for EOR, sequestration, refrigeration etc.

Abstract

Es werden ein Verfahren sowie eine Anordnung zur Entsorgung einer oder mehrerer Kohlendioxid-enthaltender Fraktionen, die an einer oder mehreren Stellen eines Fraktionierungs- und/oder Verflüssigungsprozesses, wie bspw. eines Erdgasverflüssigungsprozesses, anfallen, beschrieben. Erfindungsgemäß wird bzw. werden die Kohlendioxid-enthaltende(n) Fraktion(en) einer Reinigung (B) und/oder Verflüssigung (C) unterworfen und anschließend sequestriert (D). Hierbei wird vorzugsweise zumindest ein Teilstrom (6) der verflüssigten Kohlendioxid-enthaltenden Fraktion(en) als Kältemittel (D) innerhalb des Fraktionierungs- und/oder Verflüssigungsprozesses verwendet.A method and apparatus for disposing of one or more carbon dioxide-containing fractions incurred at one or more locations of a fractionation and / or liquefaction process, such as a natural gas liquefaction process, is described. According to the invention, the carbon dioxide-containing fraction (s) is subjected to purification (B) and / or liquefaction (C) and then sequestered (D). In this case, preferably at least one substream (6) of the liquefied carbon dioxide-containing fraction (s) is used as the refrigerant (D) within the fractionation and / or liquefaction process.

Description

Die Erfindung betrifft ein Verfahren sowie eine Anordnung zur Entsorgung einer oder mehrerer, Kohlendioxid-enthaltender Fraktionen, die an einer oder mehreren Stellen eines Fraktionierungs- und/oder Verflüssigungsprozesses, wie bspw. eines Erdgasverflüssigungsprozesses, anfallen.The The invention relates to a method and an arrangement for disposal one or more carbon dioxide-containing fractions, the one or more points of a fractionation and / or liquefaction process, such as a natural gas liquefaction process.

Im Rahmen von Fraktionierungs- und/oder Verflüssigungsprozessen, wie bspw. Erdgasfraktionierungs- und/oder -verflüssigungsprozesse, fällt bzw. fallen im Regelfall eine oder mehrere, Kohlendioxid-enthaltende Fraktionen an. Derartige "Kohlendioxid-Quellen" sind bspw. das aus der Sauergasentfernung bzw. Aminwäsche stammende Restgas sowie die Abgasströme von Gasturbinen und Dampferzeugern. Die vorgenannten Kohlendioxid-enthaltenden Fraktionen werden bisher im Wesentlichen unbehandelt an die Atmosphäre abgegeben. Der Grund hierfür ist darin zu sehen, dass durch die TA Luft zwar Grenzwerte für Kohlenwasserstoffe und Schwefelverbindungen vorgegeben sind, nicht jedoch für Kohlendioxid; dessen Emission ist daher heute noch uneingeschränkt erlaubt. Im Hinblick auf die gegenwärtigen Diskussionen bzgl. der Kohlendioxid-Problematik kann eine derartige Vorgehensweise als nicht mehr zeitgemäß angesehen werden.in the Framework of fractionation and / or liquefaction processes, such as natural gas fractionation and / or liquefaction processes, usually fall or fall one or more, carbon dioxide-containing To fractions. Such "carbon dioxide sources" are, for example, from the sour gas removal or amine wash derived residual gas as well as the exhaust gas flows of gas turbines and steam generators. The aforementioned carbon dioxide-containing fractions are so far essentially released untreated to the atmosphere. The reason for this is that TA Although air limits for hydrocarbons and sulfur compounds are given, but not for carbon dioxide; whose Emission is therefore still permitted today without restriction. With regard to the current discussions regarding the Carbon dioxide problem can be such a procedure as no longer be considered contemporary.

Bei einer Vielzahl von Verflüssigungs- und/oder Fraktionierungsprozessen wird Kohlendioxid als Kältemittel herangezogen. Insbesondere bei Erdgasverflüssigungsprozessen eignen sich Rein-Kohlendioxid-Kältemittelkreisläufe zur Vorkühlung des zu verflüssigenden Erdgases; ein derartiges Erdgasverflüssigungsverfahren ist beispielsweise in der US 6,722,157 offenbart. Der Bereitstellung und insbesondere der Entsorgung des für diese (Vorkühl)Kältekreisläufe erforderlichen Kohlendioxids wird bisher jedoch kein ausreichendes Augenmerk geschenkt.In a large number of liquefaction and / or fractionation processes, carbon dioxide is used as the refrigerant. Especially in natural gas liquefaction processes, pure carbon dioxide refrigerant circuits are suitable for precooling the natural gas to be liquefied; Such a natural gas liquefaction process is for example in the US 6,722,157 disclosed. The provision and in particular the disposal of the carbon dioxide required for these (precooling) refrigeration cycles, however, has so far received insufficient attention.

Aufgabe der vorliegenden Erfindung ist es, ein gattungsgemäßes Verfahren sowie eine gattungsgemäße Anordnung zur Entsorgung einer oder mehrerer, Kohlendioxidenthaltender Fraktionen anzugeben, die die vorbeschriebenen Nachteile vermeiden.task The present invention is a generic Method and a generic arrangement for disposal of one or more carbon dioxide-containing fractions specify that avoid the disadvantages described above.

Zur Lösung dieser Aufgabe wird ein Verfahren zur Entsorgung einer oder mehrerer, Kohlendioxid-enthaltender Fraktionen vorgeschlagen, das dadurch gekennzeichnet ist, dass die Kohlendioxid-enthaltende(n) Fraktion(en) einer Reinigung und/oder Verflüssigung unterworfen und anschließend sequestriert wird bzw. werden.to Solution to this problem becomes a method of disposal one or more carbon dioxide-containing fractions proposed, characterized in that the carbon dioxide-containing (s) Fraction (s) subjected to cleaning and / or liquefaction and then sequestrated.

Die erfindungsgemäße Anordnung zur Entsorgung einer oder mehrerer, Kohlendioxidenthaltender Fraktionen ist gekennzeichnet durch wenigstens eine Reinigungs- und/oder wenigstens eine Verflüssigungseinheit, der die Kohlendioxid-enthaltende(n) Fraktion(en) zugeführt wird bzw. werden sowie durch Mittel zum Zuführen der gereinigten und/oder verflüssigten, Kohlendioxid-enthaltenden Fraktion(en) zu einer Sequestrierung.The Inventive arrangement for the disposal of a or more carbon dioxide-containing fractions is indicated by at least one cleaning and / or at least one liquefaction unit, the carbon dioxide-containing fraction (s) fed be or by means for supplying the purified and / or liquefied, carbon dioxide-containing fraction (s) to a sequestration.

Weitere vorteilhafte Ausgestaltungen des erfindungsgemäßen Verfahrens sowie der erfindungsgemäßen Anordnung zur Entsorgung einer oder mehrerer, Kohlendioxidenthaltender Fraktionen, die Gegenstände der abhängigen Patentansprüche darstellen, sind dadurch gekennzeichnet, dass

  • – zumindest ein Teilstrom der verflüssigten Kohlendioxid-enthaltende(n) Fraktion(en) als Kältemittel innerhalb des Fraktionierungs- und/oder Verflüssigungsprozesses verwendet wird,
  • – die verflüssigten Kohlendioxid-enthaltende(n) Fraktion(en) vor ihrer Sequestrierung auf einen Druck von wenigstens 100 bar gepumpt wird bzw. werden und
  • – die Kohlendioxid-enthaltende(n) Fraktion(en) einen Kohlendioxid-Gehalt von wenigstens 90 Vol.-% aufweist bzw. aufweisen.
Further advantageous embodiments of the method according to the invention and of the arrangement according to the invention for disposing of one or more carbon dioxide-containing fractions, which form the subject of the dependent claims, are characterized in that
  • At least a partial flow of the liquefied carbon dioxide-containing fraction (s) is used as refrigerant within the fractionation and / or liquefaction process,
  • - The liquefied carbon dioxide-containing fraction (s) is pumped before its sequestration to a pressure of at least 100 bar and / or
  • - The carbon dioxide-containing fraction (s) having a carbon dioxide content of at least 90 vol .-% or have.

Das erfindungsgemäße Verfahren und die erfindungsgemäße Anordnung zur Entsorgung einer oder mehrerer, Kohlendioxid-enthaltender Fraktionen Expansionsturbine, sowie weitere Ausgestaltungen des- bzw. derselben seien nachfolgend anhand des in der Figur dargestellten Ausführungsbeispiels näher erläutert.The inventive method and the invention Arrangement for disposal of one or more, carbon dioxide-containing Fractions expansion turbine, as well as further refinements of this or the same will be described below with reference to FIG Embodiment explained in more detail.

Die in der Figur dargestellten Black-Boxes A, A' und A'' stehen für mehrere "Kohlendioxid-Quellen", wie bspw. eine oder mehrere Aminwäschen (A), eine oder mehrere Gasturbinen (A') sowie einen oder mehrere Dampferzeuger (A''), wie sie im Regelfall im Rahmen von Fraktionierungs- und/oder Verflüssigungsprozessen vorgesehen sind.The Black boxes A, A 'and A "shown in the figure stand for several "carbon dioxide sources", such as one or more amine washes (A), one or more gas turbines (A ') and one or more Steam generators (A ''), as normally used in fractionation and / or liquefaction processes are provided.

Das in diesen "Kohlendioxid-Quellen" anfallende Kohlendioxid-enthaltende Gas- bzw. Abgas wird für die Leitungen 1, 2 und 3 abgezogen, zusammengeführt und über eine gemeinsame Leitung 4 einer Reinigungseinheit B zugeführt. Diese Reinigungseinheit B ist vorzugsweise als absorptiv, adsorptiv und/oder permeativ arbeitende Reinigungseinheit ausgebildet. Die Reinigungseinheit B umfasst – sofern dies im Einzelfall erforderlich ist – eine Trocknungseinheit für die zugeführte, Kohlendioxidenthaltende Fraktion. Die aus der Reinigungseinheit B über Leitung 5 abgezogene Kohlendioxid-enthaltende Fraktion weist vorzugsweise einen Kohlendioxid-Gehalt von mehr als 90 Vol.-% auf.The resulting in these "carbon dioxide sources" carbon dioxide-containing gas or exhaust gas is for the lines 1 . 2 and 3 deducted, merged and via a common line 4 a cleaning unit B supplied. This cleaning unit B is preferably designed as an absorptive, adsorptive and / or permeative cleaning unit. The cleaning unit B comprises - if this is necessary in individual cases - a drying unit for the fed, carbon dioxide-containing fraction. The from the cleaning unit B via line 5 withdrawn carbon dioxide-containing fraction preferably has a carbon dioxide content of more than 90 vol .-%.

Diese Fraktion wird nunmehr soweit verdichtet, dass in der nachgeschalteten Verflüssigungseinheit C eine Verflüssigung der Kohlendioxid-enthaltenden Fraktion gegen ein geeignetes Medium, wie beispielsweise Kühlwasser, Luft oder ein anderes geeignetes Fluid, erfolgen kann.This fraction is now compressed so far that in the downstream liquefaction unit C liquefaction of the carbon dioxide-containing fraction against a suitable medium, as in For example, cooling water, air or other suitable fluid can take place.

Die verflüssigte Kohlendioxid-enthaltende Fraktion kann nunmehr erfindungsgemäß zur Gänze oder wenigstens teilweise als Kältemittel, beispielsweise zur Vorkühlung im Rahmen eines Erdgasverflüssigungsprozesses oder zur Kühlung bei der Abtrennung leichterer Kohlenwasserstoffe, wie C2+- oder C3+-Kohlenwasserstoffe, aus Erdgas herangezogen werden. Diese (Vor) Kühlung sei durch die Black-Box D, der die Kohlendioxid-enthaltende Fraktion über Leitung 6 zugeführt wird, dargestellt.The liquefied carbon dioxide-containing fraction can now be used according to the invention wholly or at least partially as a refrigerant, for example for precooling in the context of a natural gas liquefaction process or for cooling in the separation of lighter hydrocarbons, such as C 2+ or C 3+ hydrocarbons, from natural gas. This (pre-) cooling is through the black box D, which is the carbon dioxide-containing fraction via line 6 is supplied, shown.

Die als Kältemittel (Black-Box D) verwendete und "verbrauchte" Kohlendioxidenthaltende Fraktion wird über Leitung 7 wiederum der Verflüssigungseinheit C zugeführt und in dieser ggf. rückverflüssigt.The used as refrigerant (Black Box D) and "spent" carbon dioxide-containing fraction is via line 7 in turn fed to the liquefaction unit C and reliquefied in this possibly.

Derjenige Anteil der verflüssigten, Kohlenendioxid-enthaltenden Fraktion, der einer Sequestrierung zugeführt werden soll, wird mittels einer ein- oder mehrstufigen Pumpeinheit 9 auf den gewünschten Sequestrierungsdruck gepumpt. Dieser liegt vorzugsweise oberhalb 100 bar. Über Leitung 8 erfolgt die Zuführung der Kohlendioxidenthaltenden Fraktion zu einer geeigneten Sequestrierung E, wie bspw. einer unterirdische Lagerstätte bzw. Kaverne.The portion of the liquefied, carbon dioxide-containing fraction to be subjected to sequestration is determined by means of a single-stage or multi-stage pumping unit 9 pumped to the desired sequestering pressure. This is preferably above 100 bar. Via wire 8th the delivery of the carbon dioxide-containing fraction to a suitable sequestration E, such as, for example, an underground deposit or cavern.

Das erfindungsgemäße Verfahren sowie die erfindungsgemäße Anordnung zur Entsorgung einer oder mehrerer, Kohlendioxid-enthaltender Fraktionen eignet sich insbesondere auf schwimmenden Erdgas-Produktionsanlagen, da bei diesen aufgrund der mit bestimmten Kohlenwasserstoffgemischen verbundenen Sicherheitsrisiken Kohlendioxid als Kältemittel für die Vorkühlung bevorzugt wird. In vorteilhafter Weise kommt die Erfindung immer dann zur Anwendung, wenn zum einen innerhalb des Fraktionierungs- und/oder Verflüssigungsprozesses mehrere Kohlendioxid-enthaltende Fraktionen anfallen und zum anderen flüssiges Kohlendioxid bzw. eine verflüssigte Kohlendioxid-enthaltende Fraktion als Kältemittel gewünscht bzw. erforderlich ist.The inventive method and the invention Arrangement for disposal of one or more, carbon dioxide-containing Fractions are particularly suitable for floating natural gas production plants, because of these due to the with certain hydrocarbon mixtures associated safety risks Carbon dioxide as a refrigerant is preferred for the pre-cooling. In an advantageous manner Way, the invention is always used when, on the one hand within the fractionation and / or liquefaction process several carbon dioxide-containing fractions incurred and the other liquid carbon dioxide or a liquefied one Carbon dioxide-containing fraction desired as a refrigerant or required.

ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES 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 The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • - US 6722157 [0003] - US 6722157 [0003]

Claims (7)

Verfahren zur Entsorgung einer oder mehrerer, Kohlendioxid-enthaltender Fraktionen, die an einer oder mehreren Stellen eines Fraktionierungs- und/oder Verflüssigungsprozesses, wie bspw. eines Erdgasverflüssigungsprozesses, anfallen, dadurch gekennzeichnet, dass die Kohlendioxid-enthaltende(n) Fraktion(en) einer Reinigung (B) und/oder Verflüssigung (C) unterworfen und anschließend sequestriert (D) wird bzw. werden.A method of disposing of one or more carbon dioxide-containing fractions incurred at one or more locations of a fractionation and / or liquefaction process, such as a natural gas liquefaction process, characterized in that the carbon dioxide-containing fraction (s) of a carbon dioxide-containing fraction Purification (B) and / or liquefaction (C) subjected and then sequestered (D) is or become. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass zumindest ein Teilstrom (6) der verflüssigten Kohlendioxid-enthaltende(n) Fraktion(en) als Kältemittel (D) innerhalb des Fraktionierungs- und/oder Verflüssigungsprozesses verwendet wird.Method according to claim 1, characterized in that at least one partial flow ( 6 ) the liquefied carbon dioxide-containing fraction (s) is used as the refrigerant (D) within the fractionation and / or liquefaction process. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die verflüssigten Kohlendioxid-enthaltende(n) Fraktion(en) vor ihrer Sequestrierung (D) auf einen Druck von wenigstens 100 bar gepumpt wird bzw. werden (9).A method according to claim 1 or 2, characterized in that the liquefied carbon dioxide-containing fraction (s) before their sequestering (D) is pumped to a pressure of at least 100 bar or ( 9 ). Verfahren nach einem der vorhergehenden Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Kohlendioxid-enthaltende(n) Fraktion(en) einen Kohlendioxid-Gehalt von wenigstens 90 Vol.-% aufweist bzw. aufweisen.Method according to one of the preceding claims 1 to 3, characterized in that the carbon dioxide-containing (n) Fraction (s) with a carbon dioxide content of at least 90% vol. have or have. Anordnung zur Entsorgung einer oder mehrerer, Kohlendioxid-enthaltender Fraktionen, die an einer oder mehreren Stellen eines Fraktionierungs- und/oder Verflüssigungsprozesses, wie bspw. eines Erdgasverflüssigungsprozesses, anfallen, gekennzeichnet durch wenigstens eine Reinigungs-(B) und/oder wenigstens eine Verflüssigungseinheit (C), der die Kohlendioxid-enthaltende(n) Fraktion(en) zugeführt wird bzw. werden sowie durch Mittel zum Zuführen der gereinigten und/oder verflüssigten, Kohlendioxid-enthaltenden Fraktion(en) zu einer Sequestrierung (D).Arrangement for disposal of one or more, carbon dioxide-containing Fractions which are at one or more points of a fractionation and / or Liquefaction process, such as a natural gas liquefaction process, incurred, characterized by at least one cleaning (B) and / or at least one liquefaction unit (C) containing the carbon dioxide-containing (s) Fraction (s) is fed or be and by means for supplying the cleaned and / or liquefied, Carbon dioxide-containing fraction (s) to sequestering (D). Anordnung nach Anspruch 5, dadurch gekennzeichnet, dass die Mittel zum Zuführen der gereinigten und/oder verflüssigten, Kohlendioxid-enthaltenden Fraktion(en) zu einer Sequestrierung (D) wenigstens eine Druckerhöhungseinheit (9) aufweisen.Arrangement according to claim 5, characterized in that the means for supplying the purified and / or liquefied, carbon dioxide-containing fraction (s) to a sequestration (D) at least one pressure increasing unit ( 9 ) exhibit. Anordnung nach Anspruch 6, dadurch gekennzeichnet, dass die Druckerhöhungseinheit (9) eine Erhöhung des Druckes des bzw. der der Sequestrierung (D) zugeführten Kohlendioxid-enthaltenden Fraktionen auf wenigstens 100 bar ermöglicht.Arrangement according to claim 6, characterized in that the pressure-increasing unit ( 9 ) allows an increase in the pressure of the or the sequestration (D) supplied carbon dioxide-containing fractions to at least 100 bar.
DE102007029434A 2007-06-26 2007-06-26 Process for the disposal of carbon dioxide Withdrawn DE102007029434A1 (en)

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DE102007029434A DE102007029434A1 (en) 2007-06-26 2007-06-26 Process for the disposal of carbon dioxide
CN200880021862A CN101874187A (en) 2007-06-26 2008-06-05 Method for the removal of carbon dioxide
RU2010102252/06A RU2482407C2 (en) 2007-06-26 2008-06-05 Method to remove carbon dioxide
AU2008267511A AU2008267511A1 (en) 2007-06-26 2008-06-05 Method for the removal of carbon dioxide
MX2009013404A MX2009013404A (en) 2007-06-26 2008-06-05 Method for the removal of carbon dioxide.
US12/666,664 US20100212354A1 (en) 2007-06-26 2008-06-05 Method of disposing of carbon dioxide
MYPI20095486A MY177037A (en) 2007-06-26 2008-06-05 Method of disposing of carbon dioxide
PCT/EP2008/004505 WO2009000393A2 (en) 2007-06-26 2008-06-05 Method for the removal of carbon dioxide
NO20100108A NO20100108L (en) 2007-06-26 2010-01-21 Carbon Dioxide Removal Procedure

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