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1. WO2020223333 - SOLVENT INJECTION AND RECOVERY IN A LNG PLANT

Publication Number WO/2020/223333
Publication Date 05.11.2020
International Application No. PCT/US2020/030448
International Filing Date 29.04.2020
IPC
F25J 1/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
JLIQUEFACTION, SOLIDIFICATION, OR SEPARATION OF GASES OR GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT
1Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
F25J 1/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
JLIQUEFACTION, SOLIDIFICATION, OR SEPARATION OF GASES OR GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT
1Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
02requiring the use of refrigeration, e.g. of helium or hydrogen
CPC
C10G 5/04
CCHEMISTRY; METALLURGY
10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
GCRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION
5Recovery of liquid hydrocarbon mixtures from gases, e.g. natural gas
04with liquid absorbents
C10L 2290/543
CCHEMISTRY; METALLURGY
10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
LFUELS NOT OTHERWISE PROVIDED FOR
2290Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
54Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
543Distillation, fractionation or rectification for separating fractions, components or impurities during preparation or upgrading of a fuel
C10L 3/12
CCHEMISTRY; METALLURGY
10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
LFUELS NOT OTHERWISE PROVIDED FOR
3Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
12Liquefied petroleum gas
F25J 1/0022
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS ; OR LIQUEFIED GASEOUS; MIXTURES BY PRESSURE AND COLD TREATMENT ; OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
1Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
0002characterised by the fluid to be liquefied
0022Hydrocarbons, e.g. natural gas
F25J 1/004
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS ; OR LIQUEFIED GASEOUS; MIXTURES BY PRESSURE AND COLD TREATMENT ; OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
1Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
003characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
0032using the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
004by flash gas recovery
F25J 1/0052
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS ; OR LIQUEFIED GASEOUS; MIXTURES BY PRESSURE AND COLD TREATMENT ; OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
1Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
003characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
0047using an "external" refrigerant stream in a closed vapor compression cycle
0052by vaporising a liquid refrigerant stream
Applicants
  • CONOCOPHILLIPS COMPANY [US]/[US]
Inventors
  • CALDERON, Michael J.
  • EMBRY, Dale L.
  • DAVIES, Paul R.
  • PRADERIO, Attilio J.
Agents
  • ELLIOTT, Taryn A.
  • REHM, Adam C.
  • RICE, Phllip
  • WOOLLEY, Patrick
Priority Data
62/840,18029.04.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SOLVENT INJECTION AND RECOVERY IN A LNG PLANT
(FR) INJECTION ET RÉCUPÉRATION DE SOLVANT DANS UNE INSTALLATION GNL
Abstract
(EN)
Implementations described and claimed herein provide systems and methods for processing liquefied natural gas (LNG). In one implementation, a solvent is injected into a feed of natural gas at a solvent injection point. A mixed feed is produced from a dispersal of the solvent into the feed of natural gas. The mixed feed contains heavy components. A chilled feed is produced by chilling the mixed feed. The chilled feed includes a vapor and a condensed liquid. The condensed liquid contains a fouling portion of the heavy components condensed by the solvent during chilling. The liquid containing the fouling portion of the heavy components is separated from the vapor. The vapor is directed into a feed chiller heat exchanger following separation of the liquid containing the fouling portion of the heavy components from the vapor, such that the vapor being directed into feed chiller heat exchanger is free of freezing components.
(FR)
Les modes de réalisation décrits et revendiqués par la présente invention concernent des systèmes et des procédés de traitement de gaz naturel liquéfié (GNL). Dans un mode de réalisation, un solvant est injecté dans une charge en gaz naturel au niveau d'un point d'injection de solvant. Une charge mixte est produite à partir d'une dispersion du solvant dans la charge en gaz naturel. La charge mixte contient des composants lourds. Une charge refroidie est produite par refroidissement de la charge mixte. La charge refroidie comprend une vapeur et un liquide condensé. Le liquide condensé contient une partie d'encrassement des composants lourds condensés par le solvant pendant le refroidissement. Le liquide contenant la partie d'encrassement des composants lourds est séparé de la vapeur. La vapeur est dirigée dans un échangeur de chaleur de refroidisseur de charge après séparation du liquide contenant la partie d'encrassement des composants lourds de la vapeur, de telle sorte que la vapeur dirigée dans l'échangeur de chaleur de refroidisseur de charge soit exempte de composants de congélation.
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