EXTRACTION OF NATURAL GAS LIQUIDS AND COOLING OF TREATED RECOMPRESSED GAS

• Main Authors: JØRSTAD, ODDVAR, MARÅK, KNUT ARILD
• Format: Patent
• Language: English; French
• Published: 22.10.2015
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; BLASTING; CHEMISTRY; COMBINED HEATING AND REFRIGERATION SYSTEMS; CRACKING HYDROCARBON OILS; EQUIPMENT FOR SHIPPING; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS; LIQUEFIED PETROLEUM GAS; LUBRICANTS; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; METALLURGY; MINERAL WAXES; MIXTURES BY PRESSURE AND COLD TREATMENT; NATURAL GAS; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; REFRIGERATION OR COOLING; RELATED EQUIPMENT; SHIPS OR OTHER WATERBORNE VESSELS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE; TRANSPORTING; WEAPONS

An apparatus for processing of natural gas feed gas NG comprises: an upstream natural gas liquid extraction part (11) using a distillation column (28), where natural gas liquids NGL are extracted from the bottom of the distillation column (28) and a treated natural gas stream can be taken from the top of the distillation column (28); and a compression and cooling part (21) where treated natural gas from the top of the distillation column (28) is compressed and cooled; wherein after the natural gas liquid extraction part (11) and before the compression and cooling part (21) the treated natural gas process stream passes through a pre-cooling part (31), which is used to generate cooling duty for the treated natural gas process stream NG' after it has passed the compression and cooling part (21). La présente invention concerne un appareil pour le traitement de gaz naturel (NG) d'alimentation qui comprend : une partie extraction (11) de liquides de gaz naturel en amont qui utilise une colonne de distillation (28), des liquides de gaz naturel (NGL) étant extraits du fond de la colonne de distillation (28) et un courant de gaz naturel traité pouvant être pris à partir de la partie supérieure de la colonne de distillation (28) ; et une partie (21) de compression et de refroidissement où du gaz naturel traité provenant de la partie supérieure de la colonne de distillation (28) est comprimé et refroidi ; après la partie (11) extraction de liquides de gaz naturel et avant la partie (21) de compression et de refroidissement, le courant de traitement de gaz naturel traité passe à travers une partie (31) de prérefroidissement, qui est utilisée pour générer la charge de refroidissement pour le courant de traitement de gaz naturel traité (NG') une fois qu'il est passé par la partie (21) de compression et de refroidissement.