Simplified LNG Process
First Claim
1. A method for production of liquefied natural gas (LNG) comprising:
- taking a supply of natural gas including contaminants;
extracting from the supply gas water vapor and CO2;
in a first stage, separating the supply gas into first and second streams;
wherein the first stream is a cold stream arranged to have sufficient of the contaminants removed to meet a product specification for the composition of an LNG supply;
wherein the second stream contains natural gas and the contaminants;
and in a second stage liquefying the first stream for commercial supply;
and where in the second stream is returned for use as a natural gas supply.
3 Assignments
0 Petitions
Accused Products
Abstract
A simplified method for production of a commercial supply liquefied natural gas (LNG) supplied in a pressurized vessel includes taking a supply of natural gas including contaminants from a stranded well or from a pipe line and extracting from the supply gas water vapor and CO2 in a fixed bed absorption system. In a first stage the supply gas is separated into first and second streams where the first stream contains all the cold energy available from the feed stream and sufficient of the contaminants are removed to meet a product specification for the composition of the LNG supply. In a second stage the first stream is liquefied by the available cool energy for commercial pressurized supply container The second stream contains natural gas which is as much as 75% of the feed stream together with substantially all the contaminants and is used as a natural gas supply.
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Citations
13 Claims
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1. A method for production of liquefied natural gas (LNG) comprising:
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taking a supply of natural gas including contaminants; extracting from the supply gas water vapor and CO2; in a first stage, separating the supply gas into first and second streams; wherein the first stream is a cold stream arranged to have sufficient of the contaminants removed to meet a product specification for the composition of an LNG supply; wherein the second stream contains natural gas and the contaminants; and in a second stage liquefying the first stream for commercial supply; and where in the second stream is returned for use as a natural gas supply. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification