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Method for producing pressurized liquefied natural gas, and production system used in same

A pressurized liquefaction and natural gas technology, applied in the field of manufacturing PLNG and manufacturing systems, can solve problems such as unfavorable liquefied natural gas manufacturing systems, and achieve the effects of shortening the investment recovery period, reducing construction costs, and reducing maintenance costs

Active Publication Date: 2013-06-05
CLUSTER LNG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, conventional liquefied natural gas manufacturing systems still require processes for fractionating liquid hydrocarbons (ie, NGLs), and feed gas receiving equipment for them
Therefore, there are limitations in reducing plant construction costs and energy utilization
For this reason, conventional LNG manufacturing systems are disadvantageous in terms of economic viability in manufacturing LNG

Method used

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  • Method for producing pressurized liquefied natural gas, and production system used in same
  • Method for producing pressurized liquefied natural gas, and production system used in same
  • Method for producing pressurized liquefied natural gas, and production system used in same

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Embodiment Construction

[0085] Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following embodiments can also be changed into various forms, and the scope of the present invention is not limited to the following embodiments.

[0086] Throughout the disclosure, like reference numerals refer to like parts throughout the drawings and embodiments of the present invention.

[0087] figure 1 is a flowchart showing a pressurized liquefied natural gas production method according to the present invention.

[0088] Such as figure 1 As shown in , the pressurized liquefied natural gas production method according to the present invention produces pressurized liquefied natural gas by: removing water from natural gas without removing acid gas from natural gas supplied from the natural gas field 1; and The process of liquefying natural gas by pressurizing and cooling without fractionating natural gas into natural gas liquid (NGL). ...

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Abstract

The present invention relates to a method for producing pressurized liquefied natural gas and to a production system used in same. The method comprises: a dehydration step of receiving natural gas from a natural gas field and dehydrating the natural gas without a process of removing acid gas from the natural gas; and a liquefying step of liquefying the dehydrated natural gas at a pressure of 13 to 25 bars and a temperature of -120 to -95 DEG C without a process of fractionating a natural gas liquid (NGL) from the natural gas so as to produce pressurized liquefied natural gas. According to the present invention, costs for building and maintaining a plant may be reduced, costs for producing liquefied natural gas are reduced, and economic advantages may be obtained, and the length of time required to break even may be shortened in a small or medium-sized gas field, which is difficult to ensure using existing systems.

Description

technical field [0001] The present invention relates to a method for producing pressurized liquefied natural gas and a production system therefor, and more particularly, to a method for producing PLNG capable of reducing the construction cost and maintenance cost of a plant and reducing the production cost of liquefied natural gas and its The manufacturing system used. Background technique [0002] Generally speaking, liquefied natural gas (LNG) is a cryogenic liquid produced by cooling natural gas, mainly (methane), to a low temperature state of -162°C under atmospheric pressure. The volume of liquefied natural gas is about 1 / 600 of the volume of natural gas. Liquefied natural gas is colorless and transparent. Liquefied natural gas is known to be cost-effective for long-distance transportation because it is more efficient to transport than gaseous. [0003] Since a lot of costs are spent on the construction of manufacturing plants and the construction of vehicles, in ord...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/02F25J3/08B01D35/02
CPCF25J3/08F25J2220/68F25J1/005F25J2205/84C10L3/106F25J1/0263F25J2205/24F25J1/0272F17C1/00F25J2205/20F25J1/0055C10L3/12C10L3/104F25J2290/44F25J1/0254F25J2290/62F25J2220/66F25J1/0022F25J1/02F25J1/0265F17C5/02F17C2201/0109F17C2201/0138F17C2201/0147F17C2201/035F17C2201/052F17C2203/013F17C2203/0341F17C2203/035F17C2203/0629F17C2203/0643F17C2203/0646F17C2205/0111F17C2205/013F17C2205/0397F17C2209/232F17C2221/033F17C2223/0153F17C2223/035F17C2250/043F17C2250/0439F17C2265/031F17C2265/05F17C2270/0105
Inventor 柳盛振李正汉文荣植郑济宪李在烈崔东圭柳珍烈
Owner CLUSTER LNG CO LTD
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