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US 7,071,236 B2Granted
Natural gas liquefaction and conversion method
AssigneeInstitut Francais du Petrole
InventorsBéatrice Fischer, Alexandre Rojey
Life of this patent
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Abstract
The natural gas flowing in through line 1 is cooled, then expanded in turbine T1. The liquid at the bottom of drum D2 is the liquefied natural gas. The gas at the top of drum D2 is compressed by compressor K1, then fed into the treating plant using a Fischer-Tropsch process to convert the natural gas to natural gas liquid.
Claims8
A natural gas liquefaction and conversion method, wherein the following stages are carried out:
- a) cooling, then distilling the natural gas so as to obtain a scrubbed natural gas and a liquid,
- b) liquefying at least partly the scrubbed natural gas,
- c) expanding at least part of the partly liquefied natural gas obtained in stage b) so as to obtain a gas fraction and a liquid fraction,
- d) compressing part of the gas fraction obtained in stage c),
- e) expanding, then distilling the liquid obtained in stage a) so as to obtain a vapor and natural gas liquids,
- f) converting, by means of a Fischer-Tropsch process, the compressed gas obtained in stage d) and the vapors resulting from distillation in stage e) to a product comprising at least five carbon atoms per molecule.
3 more elements
Dependencies are inferred from the claim text.