EP 2461038 B1 20170308 - Operation control method for BOG multistage displacement compressor
Title (en)
Operation control method for BOG multistage displacement compressor
Title (de)
Betriebssteuerungsverfahren für einen Mehrstufen-Verdrängungskompressor
Title (fr)
Procédé de contrôle de fonctionnement pour compresseur BOG de déplacement à phases multiples
Publication
Application
Priority
JP 2010271577 A 20101206
Abstract (en)
[origin: EP2461038A2] Provided is an operation control method for a BOG multistage displacement compressor including connected multiple displacement compression units (9,10) for compressing boil off gas (BOG) generated from liquefied natural gas, including: under a predetermined state, performing operation control so that the ratio (load ratio) of a load of a low-pressure stage compression unit (9) to a load of a high-pressure stage compression unit (10) in the BOG multistage displacement compressor is larger than load ratios under states other than the predetermined state. Namely, the BOG multistage displacement compressor is configured so that suction temperature in the low-pressure stage compression unit (9) can be detected, and the predetermined state is set to a state where the detected temperature of the suction temperature is equal to or higher than a set temperature that is preset. According to such a method, even if the low-pressure stage side suction gas has a temperature higher than that in steady operation, the load (gas load) due to a differential pressure between suction gas and discharge gas on the high-pressure stage side can be prevented from exceeding an allowable gas load.
IPC 8 full level
F04C 23/00 (2006.01); F04C 28/02 (2006.01); F04C 28/12 (2006.01)
CPC (source: EP)
F04C 23/001 (2013.01); F04C 28/02 (2013.01); F04C 18/16 (2013.01); F04C 2270/015 (2013.01); F04C 2270/19 (2013.01); F04C 2270/21 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2461038 A2 20120606; EP 2461038 A3 20121003; EP 2461038 B1 20170308; CN 102562556 A 20120711; CN 102562556 B 20150408; JP 2012122352 A 20120628; JP 5261466 B2 20130814
DOCDB simple family (application)
EP 11190467 A 20111124; CN 201110397859 A 20111205; JP 2010271577 A 20101206