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Method of producing and distributing liquid natural gas

A technology of liquid natural gas and natural gas, applied in refrigeration and liquefaction, liquefaction, gas fuel and other directions, can solve the problems of high energy consumption and high investment in large factories

Active Publication Date: 2015-08-05
1304338 ALBERTA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the production of LNG is completed by large factories, which require high investment and high energy consumption

Method used

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  • Method of producing and distributing liquid natural gas
  • Method of producing and distributing liquid natural gas
  • Method of producing and distributing liquid natural gas

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Embodiment Construction

[0012] The following description of the method of producing and distributing LNG will refer to Figure 1 to Figure 5 . The method was developed to produce LNG at compressor stations along natural gas transmission pipelines. This method enables the economical production of LNG at different geographically distributed locations.

[0013] As mentioned above, the method was developed to produce LNG from natural gas compressor stations located on a network of natural gas transmission pipelines. The process utilizes the pressure differential between the high pressure line consumed by the mechanically driven motor at the transfer line compressor station and the low pressure fuel gas stream. The present invention enables small to medium scale LNG production at any gas compression station along the pipeline system. The ability to produce LNG close to the market offers significant advantages in terms of cost compared to existing logistics systems involving large-scale centralized prod...

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Abstract

A method for producing liquid natural gas (LNG) includes the following steps. Compressor stations forming part of existing natural-gas distribution network are identified. Compressor stations that are geographically suited for localized distribution of LNG are selected. Natural gas flowing through the selected compressor stations is diverted to provide a high pressure first natural gas stream and a high pressure second natural gas stream. A pressure of the first natural gas stream is lowered to produce cold temperatures through pressure let-down gas expansion and then the first natural gas stream is consumed as a fuel gas for an engine driving a compressor at the compressor station. The second natural gas stream is first cooled with the cold temperatures generated by the first natural gas stream, and then expanded to a lower pressure, thus producing LNG.

Description

technical field [0001] The present invention describes methods of producing and distributing liquefied natural gas (LNG) for use as a transportation fuel. Background technique [0002] The current abundant supply of natural gas in North America is due to developments in natural gas exploration and production that have enabled the cost-effective exploitation of previously inaccessible gas fields. This has resulted in a glut of natural gas. Forecasts indicate that future natural gas supply will remain high and prices low. As a way to add value to excess natural gas supplies, the natural gas industry recognizes that natural gas can be processed into LNG, which is primarily used as a fuel source for the transportation industry. At present, the production of LNG is completed by large factories, which require high investment and high energy consumption. The cost of transporting LNG from these large plants to the regional LNG market as a transportation fuel is approximately $1.0...

Claims

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Application Information

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IPC IPC(8): C10L3/12
CPCC10L3/101F25J1/0035C10L3/106F25J1/0201F25J1/0232F25J1/0202F25J3/0615F25J1/0037F25J2230/22C10L3/12F25J2240/70F25J2230/30F25J1/0274F25J2210/06F25J2240/40F25J1/023F25J1/004F25J2220/64F25J1/0022F25J2240/82
Inventor M·米利亚尔J·洛伦索
Owner 1304338 ALBERTA
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