FR2804751A1 - Process for liquefying vapor from the evaporation of liquefied natural gas - Google Patents

Process for liquefying vapor from the evaporation of liquefied natural gas Download PDF

Info

Publication number
FR2804751A1
FR2804751A1 FR0001587A FR0001587A FR2804751A1 FR 2804751 A1 FR2804751 A1 FR 2804751A1 FR 0001587 A FR0001587 A FR 0001587A FR 0001587 A FR0001587 A FR 0001587A FR 2804751 A1 FR2804751 A1 FR 2804751A1
Authority
FR
France
Prior art keywords
column
natural gas
sent
exchanger
liquefied natural
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR0001587A
Other languages
French (fr)
Other versions
FR2804751B1 (en
Inventor
Dirk Goritz
Bernard Saulnier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Priority to FR0001587A priority Critical patent/FR2804751B1/en
Publication of FR2804751A1 publication Critical patent/FR2804751A1/en
Application granted granted Critical
Publication of FR2804751B1 publication Critical patent/FR2804751B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • F25J1/0025—Boil-off gases "BOG" from storages
    • 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
    • F25J1/02—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
    • F25J1/0201—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 only internal refrigeration means, i.e. without external refrigeration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/03—Treating the boil-off
    • F17C2265/032—Treating the boil-off by recovery
    • F17C2265/037—Treating the boil-off by recovery with pressurising
    • 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
    • F25J2205/90—Mixing of components
    • 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
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/62—Liquefied natural gas [LNG]; Natural gas liquids [NGL]; Liquefied petroleum gas [LPG]
    • 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
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/02—Mixing or blending of fluids to yield a certain product
    • 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
    • F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
    • F25J2235/60—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being (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
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/34—Details about subcooling of liquids

Abstract

The vapor is sent to a reliquefaction column (4) fed by a flow of liquefied natural gas and a liquid flow is extracted from the base of the column. The vapor is recooled before being sent to the column. Installation to carry out the process. The vapor is recooled before being sent to the column by indirect heat exchange with part of the liquid flow from the base of the column. The liquid flow is pressurized before exchanging heat with the vapor. The liquid flow (8) is vaporized by the heat exchange with the vapor, heated to above 0[deg]C. Liquefying installation for vapor from the evaporation of liquefied natural gas comprising a reliquefaction column, means of sending the vapor and a flow of liquefied natural gas to the column and means for extracting a liquid flow from the base of the column. The installation also contains a heat exchanger (2) and means of sending the vapor to the exchanger and then the column. The liquid from the base of the column is sent to the exchanger and is pressurized. The natural gas produced by vaporization of the natural gas sent from the column to the exchanger is recovered.

Description

La présente invention est relative à un procédé et installation de liquéfaction du vaporisat résultant de l'évaporation de gaz naturel liquéfié. The present invention relates to a process and installation for liquefying the vaporisate resulting from the evaporation of liquefied natural gas.

Le processus de reliquéfaction du vaporisat résultant l'évaporation de gaz naturel liquefié ( boil-off ) d'un terminal nécessite des apports conséquents de frigories à très basses températures. Ce froid est en genéral obtenu en utilisant uniquement les frigories contenues dans le gaz naturel liquéfié (GNL) à basse pression. vaporisat est envoyé en cuve d'une colonne de liquéfaction contenant des garnissages et alimentée en tête par un débit GNL à basse pression et s'y condense pour produire un débit liquide en cuve la colonne. The reliquefaction process of the vaporisate resulting from the evaporation of liquefied natural gas (boil-off) from a terminal requires substantial inputs of frigories at very low temperatures. This cold is generally obtained by using only the frigories contained in liquefied natural gas (LNG) at low pressure. vaporisate is sent to the tank of a liquefaction column containing packings and supplied at the head by a low pressure LNG flow and condenses therein to produce a liquid flow in the column tank.

Un but de présente invention est de réduire la taille cette colonne en gardant la même quantité de liquéfaction. An object of the present invention is to reduce the size of this column while keeping the same amount of liquefaction.

L'invention permet également d'augmenter la capacité reliquéfier des gaz d'évaporisation et de regazéifier directement une partie GNL dans le réseau utilisateur à haute pression. Autrement dit, en gardant même quantité de liquéfaction, l'invention permet d'utiliser des frigories contenues dans le GNL à basse pression ailleurs que dans la colonne (par exemple dans un échangeur basse pression contre l'azote, (voir demande de brevet français 9913902) sans changer les conditions de fonctionnement du procédé en aval (notamment les températures d'aspiration des pompes HP 7). The invention also makes it possible to increase the capacity to reliquefy evaporating gases and to directly regasify an LNG part in the high pressure user network. In other words, by keeping the same amount of liquefaction, the invention makes it possible to use frigories contained in LNG at low pressure elsewhere than in the column (for example in a low pressure exchanger against nitrogen, (see French patent application 9913902) without changing the operating conditions of the downstream process (in particular the suction temperatures of the HP 7 pumps).

Selon un objet de l'invention, il est prévu un procédé de liquéfaction du vaporisat résultant de l'évaporation de gaz naturel liquéfié dans lequel on envoie le vaporisat à une colonne de reliquéfaction alimentée par un débit de gaz naturel liquéfié et on soutire un débit liquide en cuve de la colonne caractérisé en ce que le vaporisat est refroidi avant d'être envoyé à la colonne. According to an object of the invention, there is provided a process for liquefying the vaporisate resulting from the evaporation of liquefied natural gas in which the vaporisate is sent to a reliquefaction column supplied with a flow of liquefied natural gas and a flow is withdrawn liquid in the column tank, characterized in that the vaporizer is cooled before being sent to the column.

Optionnellement, le vaporisat est refroidi avant d'être envoyé à la colonne par échange indirect de chaleur avec une partie du débit liquide soutiré en cuve de la colonne. Selon un autre objet de l'invention, il est prévu une installation liquéfaction du vaporisat résultant de l'évaporation de gaz naturel liquéfié comprenant une colonne de reliquéfaction, des moyens pour envoyer le vaporisat et un débit de gaz naturel liquéfié à fa colonne et des moyens pour soutirer débit liquide en cuve de la colonne caractérisée en ce qu'elle comprend échangeur chaleur et des moyens pour envoyer le vaporisat à l'échangeur et ensuite à colonne.  Optionally, the vaporizer is cooled before being sent to the column by indirect heat exchange with part of the liquid flow withdrawn from the bottom of the column. According to another object of the invention, there is provided an installation for liquefying the vaporisate resulting from the evaporation of liquefied natural gas comprising a reliquefaction column, means for sending the vaporisate and a flow of liquefied natural gas to the column and means for withdrawing liquid flow from the bottom of the column, characterized in that it comprises heat exchanger and means for sending the vaporisate to the exchanger and then to the column.

De préférence, elle comprend - moyens pour envoyer le liquide de la cuve de la colonne à l'échangeur - moyens pour pressuriser le liquide envoyé à l'échangeur; - moyens pour récupérer du gaz naturel produit par vaporisation du gaz naturel liquéfié envoyé à la colonne à l'échangeur. Preferably, it comprises - means for sending the liquid from the bottom of the column to the exchanger - means for pressurizing the liquid sent to the exchanger; - Means for recovering natural gas produced by vaporization of liquefied natural gas sent to the column to the exchanger.

L'invention sera décrite en détail en se référant à la figure qui représente schématiquement une installation selon l'invention. The invention will be described in detail with reference to the figure which schematically represents an installation according to the invention.

Un debit 1 de 25 000 Nm3lh résultant de l'évaporation du gaz naturel liquéfié contenu dans un réservoir d'entreposage après recompression est à et 7 baya. débit se refroidit dans un échangeur 2 à -120 C et le débit refroidi est envoye en cuve d'une colonne de reliquéfaction 4 contenant des garnissages. Cette colonne est alimentée en tête par un débit de 285 000 Nm3lh de GNL à -157 C bara envoyé par les pompes immergées des réservoirs de GNL. GNL, étant a l'état sous-refroidi à ce niveau de pression, peut absorber le débit refroidi 3 passe ainsi à l'état liquide en mélange avec le GNL. Un liquide 6 à - 144,9 C soutiré en cuve de la colonne 4 et est pompé par la pompe 7 à bars, la pression nécessaire au réseau du consommateur de gaz naturel. partie de liquide est envoyée dans des dispositifs utilisés en pratique (par exemple échangeur atmosphérique ou échangeur à l'eau) pour servir de produit. L'autre partie 8, 11490 Nm3lh de GNL à la haute pression de 75 bara et à -1 et renvoyée ' l'échangeur 2 pour y être réchauffée à 1 C à contre-courant avec vaporisat et ainsi vaporisée formant un débit 9 de gaz naturel à 75 bars, qui également de produit. Sans récuperation d'énergie frigorifique, la température du liquide 6 serait de -138 C, température qui peut risquer la cavitation des pompes 7, due au faible NPSH (hauteur d'aspiration nette). A flow 1 of 25,000 Nm3lh resulting from the evaporation of liquefied natural gas contained in a storage tank after recompression is at and 7 baya. flow is cooled in an exchanger 2 at -120 C and the cooled flow is sent to the tank of a reliquefaction column 4 containing linings. This column is supplied at the head with a flow rate of 285,000 Nm3lh of LNG at -157 C bara sent by the submerged pumps of the LNG tanks. LNG, being in the sub-cooled state at this pressure level, can absorb the cooled flow 3 thus passes to the liquid state in mixture with the LNG. A liquid 6 at - 144.9 C withdrawn from the tank of column 4 and is pumped by the pump 7 at bars, the pressure necessary for the network of the consumer of natural gas. part of the liquid is sent into devices used in practice (for example atmospheric exchanger or water exchanger) to serve as a product. The other part 8, 11490 Nm3lh of LNG at high pressure of 75 bara and at -1 and returned 'the exchanger 2 to be reheated there at 1 C against the current with vaporizer and thus vaporized forming a flow 9 of gas natural at 75 bars, which also produces. Without cooling energy recovery, the temperature of the liquid 6 would be -138 C, a temperature which can risk cavitation of the pumps 7, due to the low NPSH (net suction height).

Autrement , pour une température maximum en aval du reliquéfacteur -138 C, la récupération de l'énergie frigorifique permet de reliquéfier 42000Nm3/h vaporisat, soit une augmentation de liquéfaction 17.000 Nm3/h, de regazéifier 20000Nm3/h de GNL à haute pression.Otherwise, for a maximum temperature downstream of the reliquifier -138 C, the recovery of the refrigerating energy makes it possible to reliquefy 42000Nm3 / h vaporisat, i.e. an increase in liquefaction 17.000 Nm3 / h, to regasify 20000Nm3 / h of LNG at high pressure.

Claims (1)

<B>REVENDICATIONS</B><B> CLAIMS </B> 1. Procédé de liquéfaction du vaporisat résultant de l'évaporation gaz naturel liquéfié dans lequel on envoie le vaporisat à une colonne reliquéfaction (4) alimentée par un débit de gaz naturel liquéfié et on soutire un débit liquide en cuve de la colonne caractérisé en ce que le vaporisat est refroidi avant d'être envoyé à la colonne. Procédé selon la revendication 1 dans lequel le vaporisat est refroidi avant d'être envoyé à la colonne par échange indirect de chaleur avec une partie du débit liquide soutiré en cuve de la colonne. Procédé selon la revendication 2 dans lequel le débit liquide (8) pressurisé avant d'échanger de la chaleur avec le vaporisat. Procédé selon l'une des revendications 2 et 3 dans lequel le debit liquide se vaporise par échange de chaleur avec le vaporisat. Procédé selon la revendication 4 dans lequel le débit liquide (8) se réchauffe à une température au-dessus de 0 C par échange de chaleur avec le vaporisat. Installation de liquéfaction du vaporisat résultant de l'évaporation de gaz naturel liquéfié comprenant une colonne de reliquéfaction (4), des moyens pour envoyer le vaporisat et un débit de gaz naturel liquéfié à la colonne et des moyens pour soutirer un débit liquide en cuve de la colonne caractérisée en ce qu'elle comprend un échangeur de chaleur (2) et des moyens pour envoyer le vaporisat à l'échangeur et ensuite à la colonne. Installation selon la revendication 6 comprenant des moyens pour envoyer 1e liquide de la cuve de la colonne (4) à l'échangeur (2). Installation selon la revendication 7 comprenant des moyens (7) pour pressuriser le liquide envoyé à l'échangeur. Installation selon les revendications 6, 7 ou 8 comprenant des moyens pour recupérer du gaz naturel produit par vaporisation du gaz naturel envoyé de la colonne à l'échangeur.1. Method for liquefying the vaporisate resulting from the evaporation of liquefied natural gas in which the vaporisate is sent to a reliquefaction column (4) supplied with a flow of liquefied natural gas and a liquid flow is drawn off from the bottom of the column, characterized in that that the vaporizer is cooled before being sent to the column. The method of claim 1 wherein the vaporizer is cooled before being sent to the column by indirect heat exchange with part of the liquid flow withdrawn from the bottom of the column. The method of claim 2 wherein the liquid flow (8) pressurized before exchanging heat with the vaporizer. Method according to one of claims 2 and 3 wherein the liquid flow vaporizes by heat exchange with the vaporize. The method of claim 4 wherein the liquid flow (8) heats up to a temperature above 0 C by heat exchange with the vaporizer. Installation for the liquefaction of the vaporisate resulting from the evaporation of liquefied natural gas comprising a reliquefaction column (4), means for sending the vaporisate and a flow of liquefied natural gas to the column and means for withdrawing a liquid flow from the tank the column characterized in that it comprises a heat exchanger (2) and means for sending the vaporisate to the exchanger and then to the column. Installation according to claim 6 comprising means for sending the liquid from the bottom of the column (4) to the exchanger (2). Installation according to claim 7 comprising means (7) for pressurizing the liquid sent to the exchanger. Installation according to claims 6, 7 or 8 comprising means for recovering natural gas produced by vaporization of the natural gas sent from the column to the exchanger.
FR0001587A 2000-02-09 2000-02-09 PROCESS AND PLANT FOR LIQUEFACTION OF VAPORISATE RESULTING FROM THE EVAPORATION OF LIQUEFIED NATURAL GAS Expired - Fee Related FR2804751B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0001587A FR2804751B1 (en) 2000-02-09 2000-02-09 PROCESS AND PLANT FOR LIQUEFACTION OF VAPORISATE RESULTING FROM THE EVAPORATION OF LIQUEFIED NATURAL GAS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0001587A FR2804751B1 (en) 2000-02-09 2000-02-09 PROCESS AND PLANT FOR LIQUEFACTION OF VAPORISATE RESULTING FROM THE EVAPORATION OF LIQUEFIED NATURAL GAS

Publications (2)

Publication Number Publication Date
FR2804751A1 true FR2804751A1 (en) 2001-08-10
FR2804751B1 FR2804751B1 (en) 2002-06-14

Family

ID=8846795

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0001587A Expired - Fee Related FR2804751B1 (en) 2000-02-09 2000-02-09 PROCESS AND PLANT FOR LIQUEFACTION OF VAPORISATE RESULTING FROM THE EVAPORATION OF LIQUEFIED NATURAL GAS

Country Status (1)

Country Link
FR (1) FR2804751B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006031362A1 (en) 2004-09-14 2006-03-23 Exxonmobil Upstream Research Company Method of extracting ethane from liquefied natural gas

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4017283A (en) * 1971-11-17 1977-04-12 Sulzer Brothers Limited Method and plant for making up nitrogen vaporization losses in nitrogen-containing liquified natural gas carrying tankers
JPH07157782A (en) * 1993-12-09 1995-06-20 Tokyo Gas Co Ltd Reliquefying device for bog generating in liquefied natural gas storage tank
WO2000023756A1 (en) * 1998-10-22 2000-04-27 Exxonmobil Upstream Research Company Volatile component removal process from natural gas

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4017283A (en) * 1971-11-17 1977-04-12 Sulzer Brothers Limited Method and plant for making up nitrogen vaporization losses in nitrogen-containing liquified natural gas carrying tankers
JPH07157782A (en) * 1993-12-09 1995-06-20 Tokyo Gas Co Ltd Reliquefying device for bog generating in liquefied natural gas storage tank
WO2000023756A1 (en) * 1998-10-22 2000-04-27 Exxonmobil Upstream Research Company Volatile component removal process from natural gas

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 09 31 October 1995 (1995-10-31) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006031362A1 (en) 2004-09-14 2006-03-23 Exxonmobil Upstream Research Company Method of extracting ethane from liquefied natural gas
US8156758B2 (en) 2004-09-14 2012-04-17 Exxonmobil Upstream Research Company Method of extracting ethane from liquefied natural gas
EP1789739A4 (en) * 2004-09-14 2018-06-06 Exxonmobil Upstream Research Company Method of extracting ethane from liquefied natural gas

Also Published As

Publication number Publication date
FR2804751B1 (en) 2002-06-14

Similar Documents

Publication Publication Date Title
JP4496224B2 (en) LNG vapor handling configuration and method
KR930008299B1 (en) Reliquefaction of boil-off from liquefied natural gas
US3724229A (en) Combination liquefied natural gas expansion and desalination apparatus and method
RU2121637C1 (en) Method and device for cooling fluid medium in liquefying natural gas
KR100777137B1 (en) Boil off gas reliquefaction apparatus using packing tower
US20090100844A1 (en) Apparatus and method for controlling temperature in a boil-off gas
KR100761975B1 (en) Lng bog reliquefaction apparatus and lng bog reliquefaction method
FR2675891A1 (en) PROCESS FOR PRODUCING LIQUID NITROGEN USING LIQUEFIED NATURAL GAS AS THE ONLY REFRIGERANT.
KR20190116480A (en) How to purge dual purpose liquefied natural gas / liquefied nitrogen storage tanks
NO321742B1 (en) Method and apparatus for gas condensation
US4699642A (en) Purification of carbon dioxide for use in brewing
BG63828B1 (en) Method for the liquefaction of natural gas containing at least one freezing component
KR900005143A (en) Vaporization Reliquefaction of Liquid Natural Gas
WO2004099691A1 (en) Method and system for the production of pressurized air gas by cryogenic distillation of air
JP7346453B2 (en) Methods and equipment for storing and distributing liquefied hydrogen
FR2803851A1 (en) PROCESS FOR PARTIAL LIQUEFACTION OF A HYDROCARBON CONTAINING FLUID SUCH AS NATURAL GAS
KR960041990A (en) How to remove nitrogen from LNG
KR20200080461A (en) Fuel Gas Supply System and Method
CA2131120A1 (en) Process and equipment for producing compressed gazeous nitrogen and/or oxygen
FR2804751A1 (en) Process for liquefying vapor from the evaporation of liquefied natural gas
EP0766055B1 (en) Process and apparatus for the production of pressurized gas by cryogenic distillation
FR2702040A1 (en) Process and installation for producing oxygen and / or nitrogen under pressure
FR2709538A1 (en) Method and installation for producing at least one pressurized air gas
KR101895490B1 (en) Fuel gas managemant and supply system in ships
WO2024083386A1 (en) Gas recovery method and apparatus for a compressor

Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20101029