Patent AU-2012324009-B2 (AU)
Title: System and method for producing a liquefied hydrocarbon stream and method of operating a compressor
Inventor: VAN AKEN MICHIEL GIJSBERT
IPC: F25J1/00
Filed: 2012-12-13
Granted: 2015-08-06
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date W O 2013/087740 A2 20 June 2013 (20.06.2013) W I PO I P CT (51) International Patent Classification: AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, F25J1/00 (2006.01) FO1D 15/10 (2006.01) BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, F25J1/02 (2006.01) F04D 27/00 (2006.01) DO, DZ, EC, EE, EG, ES, Fl, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, (21) International Application Number: KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, PCT/EP2012/075314 ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, (22) International Filing Date: NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, 13 December 2012 (13.12.2012) RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, (25) Filing Language: English ZM, Zw. (26) Publication Language: English (84) Designated States (unless otherwise indicated, for every (30) Priority Data: kind of regional protection available): ARIPO (BW, GH, 11193688.6 15 December 2011 (15.12.2011) EP GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, (71) Applicant (for all designated States except US): SHELL TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, INTERNATIONALE RESEARCH MAATSCHAPPIJ EE, ES, Fl, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, B.V. [NL/NL]; Carel van Bylandtlaan 30, NL-2596 HR MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, The Hague (NL). TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, (71) Applicant (for US only): SHELL OIL COMPANY ML, MR, NE, SN, TD, TG). [US/US]; P.O. Box 2463, One Shell Plaza, Houston, Texas Declarations under Rule 4.17: 77252-2463 (US). - as to applicant's entitlement to apply for and be granted a (72) Inventor: VAN AKEN, Michiel, Gijsbert; Carel van patent (Rule 4.17(ii)) Bylandtlaan 23, NL-2596 HR The Hague (NL). Published: (74) Agent: MATTHEZING, Robert, Maarten; Shell Interna- - without international search report and to be republished tional BV, P.O. Box 384, NL-2501 CJ The Hague (NL). upon receipt of that report (Rule 48.2(g)) (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, (54) Title: SYSTEM AND METHOD FOR PRODUCING A LIQUEFIED HYDROCARBON STREAM AND METHOD OF OP ERATING A COMPRESSOR 240 225 ,220 400 200 210 430 430 230' /--300 "10 90 140 1 5 100 110 (57) Abstract: At least part of a fluid is compressed in a compressor driven by an electric motor. The compressor has variable inlet guide vanes of which an angle can be adjusted. The electric motor is powered using a power supply network, and a signal represent ative of a condition of the power supply network is monitored. From the signal, it is automatically determined whether additional load shedding is needed, by comparing the signal to a predetermined criterion. The variable inlet guide vanes angle is automatically f4 adjusted when the criterion is satisfied and additional load shedding is needed. This automatically reduces the loading of the com pressor. The compressor and the method of operating it may be employed as part of a system for producing a liquefied hydrocarbon stream and/or in the course of producing a liquefied hydrocarbon stream, in which case the compressor can be a refrigerant com pressor and the fluid a refrigerant fluid.