凝固性固形物を除去することによりLNGを製造する方法および装置

Japanese Patent JP2005515298

A

Novel processes and devices for the removal of freezable species such as carbon dioxide, water and heavy hydrocarbons from a natural gas feed stream during liquefaction to produce LNG are disclosed. The freezable species are able to be removed as a solid, avoiding the costly step of pretreatment to remove the freezable species from the natural gas feed stream prior to the liquefaction stage. The freezable species may be removed on a continuous basis being separated as solids following liquefaction of the natural gas feed stream with subsequent separation of the solids. The solid freezable species may then be liquefied on a continuous basis if required with natural gas recycled to the process. Continuous removal of the freezable species from the natural gas feed stream is achievable by maintaining cooling and separation apparatus at the same working pressure. Advantageously, at least part of the cooling vessel is constructed from a material having a low thermal conductivity which discourages formation of the solids of the freezable species on the walls of the cooling vessel.

Robert Amin
Anthony Frederick Kennard

JP2003562550A

May 26, 2005

January 17, 2003

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CURTIN UNIVERSITY OF TECHNOLOGY
CORE LABORATORIES AUSTRALIA PTY LTD

B01D21/26; B01D21/24; C10G5/06; C10L3/10; F25J1/00; F25J1/02; F25J3/02; F25J3/06; (IPC1-7): C10L3/10; B01D21/26; F25J1/00

JP2002508057A	2002-03-12
JPH10121071A	1998-05-12
JPS62190377A	1987-08-20
JPH06299175A	1994-10-25
JP2001324261A	2001-11-22
JPS61201614A	1986-09-06

WO1999001706A1	1999-01-14
US5819555A	1998-10-13
US3376709A	1968-04-09
US2900797A	1959-08-25

Akira Imai

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