Title:
液化窒素を使用して液化天然ガスから窒素を分離する方法及びシステム
Document Type and Number:
Japanese Patent JP6772267
Kind Code:
B2
Abstract:
A method for separating nitrogen from an LNG stream with a nitrogen concentration of greater than 1 mol %. A pressurized LNG stream is produced at a liquefaction facility by liquefying natural gas, where the pressurized LNG stream has a nitrogen concentration of greater than 1 mol %. At least one liquid nitrogen (LIN) stream is received from storage tanks, the at least one LIN stream being produced at a different geographic location from the LNG facility. The pressurized LNG stream is separated in a separation vessel into a vapor stream and a liquid stream. The vapor stream has a nitrogen concentration greater than the nitrogen concentration of the pressurized LNG stream. The liquid stream has a nitrogen concentration less than the nitrogen concentration of the pressurized LNG stream. At least one of the one or more LIN streams is directed to the separation vessel.
Inventors:
Pierre Fritz
Huntington Richard A
Huntington Richard A
Application Number:
JP2018530151A
Publication Date:
October 21, 2020
Filing Date:
November 10, 2016
Export Citation:
Assignee:
Exxon Mobil Upstream Research Company
International Classes:
F25J3/02; C10L3/10
Domestic Patent References:
| JP2010538234A | ||||
| JP2013036676A | ||||
| JP53005321B1 | ||||
| JP2015210079A | ||||
| JP2008537089A |
Foreign References:
| WO2010128466A1 | ||||
| WO2006120127A1 | ||||
| US20110126451 | ||||
| US20140130542 |
Attorney, Agent or Firm:
Shinichiro Tanaka
Disciple Maru Ken
▲吉▼田 和彦
Mitsuru Matsushita
Ichiro Kurasawa
Yasushi Yamamoto
Disciple Maru Ken
▲吉▼田 和彦
Mitsuru Matsushita
Ichiro Kurasawa
Yasushi Yamamoto