Patent SG-11201906786Y-A (SG)
Title: Method of purging a dual purpose lng/lin storage tank
Inventor: KAMINSKY ROBERT
IPC: F17C9/04
Filed: 2018-01-17
Abstract: 106 150 120 \- 1 , 112 102 104 140 142 144 100 136 00 O C (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 06 December 2018 (06.12.2018) WIP0 I PCT ~~~~~ 11111111011101010VIIIOH olo om om om o111111o1flo ow (10) International Publication Number WO 2018/222230 Al (51) International Patent Classification: F17C 9/04 (2006.01) F17C 9/02 (2006.01) (21) International Application Number: PCT/US2018/014058 (22) International Filing Date: 17 January 2018 (17.01.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/463,274 24 February 2017 (24.02.2017) US (71) Applicant (for all designated States except US): EXXONMOBIL UPSTREAM RESEARCH COMPA- NY [US/US]; (EMHC-E2-4A-296), 22777 Springwoods Village Parkway, Spring, TX 77389 (US). (72) Inventors; and (71) Applicants (for US only): KAMINSKY, Robert, D. [US/US]; 1058 Del Norte Street, Houston, TX 77018 (US). PIERRE, Fritz, Jr. [US/US]; 18011 Bayou Mead Trail, Humble, TX 77346 (US). (74) Agent: JENSEN, Nathan, 0. et al.; ExxonMobil Upstream Research Company, (EMHC-E2 4A-296), 22777 Spring- woods Village Parkway, Spring, TX 77389 (US). (81) Designated States (unless otherwise indicated, for every kind of national protection available): 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. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, (54) Title: METHOD OF PURGING A DUAL PURPOSE LNG/LIN STORAGE TANK FIG. I (57) : A method for loading liquefied nitrogen (LIN) into a cryogenic storage tank initially containing liquid natural gas (LNG) and a vapor space above the LNG. First and second nitrogen gas streams are provided. The first nitrogen stream has a lower temperature than the second nitrogen gas stream. While the LNG is offloaded from the storage tank, the first nitrogen gas stream is injected into the vapor space. The storage tank is then purged by injecting the second nitrogen gas stream into the storage tank to thereby reduce a natural gas content of the vapor space to less than 5 mol%. After purging the storage tank, the storage tank is loaded with LIN. [Continued on next page] WO 2018/222230 Al MIDEDIMOMOIDEIREEMODIMMONEHOMOVOIMIE UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (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), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Declarations under Rule 4.17: as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(11)) as to the applicant's entitlement to claim the priority of the earlier application (Rule 4.17(iii)) Published: — with international search report (Art. 21(3))