EP 0572590 B1 19960904 - METHOD OF DENITROGENATING A CHARGE OF A HYDROCARBON MIXTURE CONSISTING MAINLY OF METHANE AND CONTAINING AT LEAST 2 % MOL NITROGEN
Title (en)
METHOD OF DENITROGENATING A CHARGE OF A HYDROCARBON MIXTURE CONSISTING MAINLY OF METHANE AND CONTAINING AT LEAST 2 % MOL NITROGEN
Title (de)
STICKSTOFFENTFERNUNGSVERFAHREN AUS EINEM HAUPTSÄCHLICH METHAN ENTHALTENDEN KOHLENWASSERSTOFFEINSATZGEMISCH MIT MINDESTENS 2 MOL % STICKSTOFF
Title (fr)
PROCEDE DE DEAZOTATION D'UNE CHARGE D'UN MELANGE D'HYDROCARBURES CONSISTANT PRINCIPALEMENT EN METHANE ET RENFERMANT AU MOINS 2 % MOLAIRE D'AZOTE
Publication
Application
Priority
- FR 9200991 W 19921022
- FR 9113081 A 19911023
Abstract (en)
[origin: FR2682964A1] The charge of LNG (1) is refrigerated by primary expansion in a turbine (21), direct heat exchange (2) and secondary static expansion (3). The refrigerated charge (4) is fractionated in a denitrogenation column (5) in a gas phase (10) consisting of nitrogen and methane, discharged at the head of the column (5), and into a denitrogenated LNG flow (11) drawn off from the bottom of said column. A first fraction (6) and a second fraction (8) of LNG are taken from the column (5), pass through the heat exchanger (2) to refrigerate the charge (1), and are then reinjected into the column as first (7) and second (9) reboiling fractions. After recovery of its negative calories (13), the gas fraction (10) is compressed (15) to form a flow (20) of combustible gaz.
IPC 1-7
IPC 8 full level
F25J 3/08 (2006.01); C10L 3/10 (2006.01); F25J 3/02 (2006.01)
CPC (source: EP US)
C10L 3/10 (2013.01 - EP US); F25J 3/0209 (2013.01 - EP US); F25J 3/0233 (2013.01 - EP US); F25J 3/0257 (2013.01 - EP US); F25J 2200/02 (2013.01 - EP US); F25J 2200/04 (2013.01 - EP US); F25J 2200/70 (2013.01 - EP US); F25J 2200/74 (2013.01 - EP US); F25J 2200/76 (2013.01 - EP US); F25J 2200/78 (2013.01 - EP US); F25J 2205/04 (2013.01 - EP US); F25J 2210/06 (2013.01 - EP US); F25J 2215/04 (2013.01 - EP US); F25J 2230/60 (2013.01 - EP US); F25J 2235/60 (2013.01 - EP US); F25J 2240/30 (2013.01 - EP US); F25J 2270/42 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE ES FR GB GR IT NL
DOCDB simple family (publication)
FR 2682964 A1 19930430; FR 2682964 B1 19940805; AU 2948192 A 19930521; AU 657816 B2 19950323; CA 2099003 A1 19930424; CA 2099003 C 20010508; DE 69213437 D1 19961010; DE 69213437 T2 19970327; DZ 1630 A1 20020217; EP 0572590 A1 19931208; EP 0572590 A4 19930917; EP 0572590 B1 19960904; ES 2093855 T3 19970101; GR 3021723 T3 19970228; JP 3234601 B2 20011204; JP H06503608 A 19940421; MY 108223 A 19960830; NO 180277 B 19961209; NO 180277 C 19970319; NO 932294 D0 19930622; NO 932294 L 19930823; NZ 244874 A 19950328; RU 2085815 C1 19970727; US 5421165 A 19950606; WO 9308436 A1 19930429
DOCDB simple family (application)
FR 9113081 A 19911023; AU 2948192 A 19921022; CA 2099003 A 19921022; DE 69213437 T 19921022; DZ 920136 A 19921021; EP 92923851 A 19921022; ES 92923851 T 19921022; FR 9200991 W 19921022; GR 960403118 T 19961120; JP 50750293 A 19921022; MY PI19921911 A 19921022; NO 932294 A 19930622; NZ 24487492 A 19921023; RU 93050179 A 19921022; US 8132693 A 19930811