Modified Claude Process for Producing Liquefied Gas
First Claim
1. A gas liquefying system, comprising:
- a first combiner adapted to form a first blended stream from a combination of an input gas and a first portion of a first recycle stream;
a heat exchanger adapted to receive the first blended stream and a second blended stream, transferring heat from the first blended stream to the second blended stream, producing a cooled first blended stream and a heated second blended stream;
a first expander adapted to receive the cooled first blended stream and to produce a mixture of gas and liquefied gas;
an outlet adapted to produce the liquefied gas;
a first compressor adapted to receive the gas from the mixture of gas and liquefied gas and to produce a second recycle stream;
a second combiner adapted to form the second blended stream from the second recycle stream and a third recycle stream and to provide the second blended stream to the heat exchanger;
a second compressor adapted to receive the heated second blended stream from the heat exchanger and produce the first recycle stream and to provide the first portion of the first recycle stream to the first combiner;
a second expander adapted to receive a second portion of the first recycle stream and to produce the third recycle stream and to provide the third recycle stream to the second combiner.
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Accused Products
Abstract
A system and method for liquefying gas are provided. The method includes combining an input gas and a first recycle stream to form a first blended stream, and producing a cooled first blended stream and a heated second blended stream by passing the first blended stream and a second blended stream through a heat exchanger. The method also includes producing a mixture of gas and liquefied gas from the cooled first blended stream using a first expander, and producing the liquefied gas at an outlet. The method further includes producing a second recycle stream from the gas from the output of the first expander using a first compressor, and combining the second recycle stream and a third recycle stream to form the second blended stream. The method still further includes producing the first recycle stream from the heated second blended stream using a second compressor, and producing the third recycle stream from the first recycle stream using a second expander.
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Citations
20 Claims
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1. A gas liquefying system, comprising:
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a first combiner adapted to form a first blended stream from a combination of an input gas and a first portion of a first recycle stream; a heat exchanger adapted to receive the first blended stream and a second blended stream, transferring heat from the first blended stream to the second blended stream, producing a cooled first blended stream and a heated second blended stream; a first expander adapted to receive the cooled first blended stream and to produce a mixture of gas and liquefied gas; an outlet adapted to produce the liquefied gas; a first compressor adapted to receive the gas from the mixture of gas and liquefied gas and to produce a second recycle stream; a second combiner adapted to form the second blended stream from the second recycle stream and a third recycle stream and to provide the second blended stream to the heat exchanger; a second compressor adapted to receive the heated second blended stream from the heat exchanger and produce the first recycle stream and to provide the first portion of the first recycle stream to the first combiner; a second expander adapted to receive a second portion of the first recycle stream and to produce the third recycle stream and to provide the third recycle stream to the second combiner. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of liquefying gas, the method comprising:
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combining an input gas and a first portion of a first recycle stream to form a first blended stream; producing a cooled first blended stream and a heated second blended stream by passing the first blended stream and a second blended stream through a heat exchanger adapted to transfer heat from the first blended stream to the second blended stream; producing a mixture of gas and liquefied gas from the cooled first blended stream using a first expander; producing the liquefied gas at an outlet; producing a second recycle stream from the gas from the mixture of gas and liquefied gas using a first compressor; combining the second recycle stream and a third recycle stream to form the second blended stream; producing the first portion and a second portion of the first recycle stream from the heated second blended stream using a second compressor; producing the third recycle stream from the second portion of the first recycle stream using a second expander. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A gas liquefying system, comprising:
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a heat exchanger adapted to receive an input gas and produce a cooled gas; and a gerotor expander adapted to receive the cooled gas and to produce a mixture of gas and liquefied gas. - View Dependent Claims (20)
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Specification