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1. (WO2019067123) NATURAL GAS LIQUEFACTION BY A HIGH PRESSURE EXPANSION PROCESS
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Pub. No.: WO/2019/067123 International Application No.: PCT/US2018/047955
Publication Date: 04.04.2019 International Filing Date: 24.08.2018
IPC:
F25J 1/00 (2006.01) ,F25J 1/02 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25
REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
J
LIQUEFACTION, SOLIDIFICATION, OR SEPARATION OF GASES OR GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT
1
Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25
REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
J
LIQUEFACTION, SOLIDIFICATION, OR SEPARATION OF GASES OR GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT
1
Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
02
requiring the use of refrigeration, e.g. of helium or hydrogen
Applicants:
PIERRE, Fritz, Jr. [US/US]; US (US)
EXXONMOBIL UPSTREAM RESEARCH COMPANY [US/US]; 22777 Springwoods Village Parkway Spring, TX 77389, US (AllExceptUS)
Inventors:
PIERRE, Fritz, Jr.; US
Agent:
JENSEN, Nathan, O.; US
BAEHL, Stephen; US
FICK, C., Milton; US
ARECHEDERRA, Leandro; US
BORDELON, Bruce, M.; US
Priority Data:
62/565,72529.09.2017US
Title (EN) NATURAL GAS LIQUEFACTION BY A HIGH PRESSURE EXPANSION PROCESS
(FR) LIQUÉFACTION DE GAZ NATUREL AU MOYEN D'UN PROCÉDÉ DE DÉTENTE À HAUTE PRESSION
Abstract:
(EN) A method and system for liquefying a methane-rich high-pressure feed gas stream using a system having first and second heat exchanger zones and a compressed refrigerant stream. The compressed refrigerant stream is cooled and directed to the second heat exchanger zone to additionally cool it below ambient temperature. It is then expanded and passed through the first heat exchanger zone such that it has a temperature that is cooler, by at least 2,8 °C, than the highest fluid temperature within the first heat exchanger zone. The feed gas stream is passed through the first heat exchanger zone to cool at least part of it by indirect heat exchange with the refrigerant stream, thereby forming a liquefied gas stream. At least a portion of the first warm refrigerant stream is directed to the second heat exchanger zone to cool the refrigerant stream, which is compressed.
(FR) L'invention concerne un procédé et un système de liquéfaction d'un courant de gaz d'alimentation à haute pression riche en méthane au moyen d'un système comportant des première et seconde zones d'échange de chaleur et un courant de fluide frigorigène comprimé. Le courant de fluide frigorigène comprimé est refroidi et dirigé vers la seconde zone d'échange de chaleur afin de le refroidir davantage en dessous de la température ambiante. Il est ensuite détendu et passé à travers la première zone d'échange de chaleur de manière à présenter une température plus froide, d'au moins 2,8 °C, par rapport à la plus haute température du fluide à l'intérieur de la première zone d'échange de chaleur. Le courant de gaz d'alimentation est passé à travers la première zone d'échange de chaleur afin de refroidir au moins une partie du courant par échange de chaleur indirect avec le courant de fluide frigorigène, formant ainsi un courant de gaz liquéfié. Au moins une partie du premier courant de fluide frigorigène tiède est dirigée vers la seconde zone d'échange de chaleur afin de refroidir le courant de fluide frigorigène, qui est comprimé.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)