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Improved multi-component refrigeration process for liquefaction of natural gas

A liquefied natural gas, multi-component technology, used in liquefaction, gas processing/storage purposes, gas fuels, etc., which can solve the problems of high operating costs and large capital investment.

Inactive Publication Date: 2003-12-24
EXXONMOBIL UPSTREAM RES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Gas processing equipment typically uses chemical and / or physical solvent regeneration methods requiring substantial capital investment
In addition, operating costs are high

Method used

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  • Improved multi-component refrigeration process for liquefaction of natural gas
  • Improved multi-component refrigeration process for liquefaction of natural gas
  • Improved multi-component refrigeration process for liquefaction of natural gas

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Embodiment Construction

[0060] The mass and energy balances were simulated to illustrate the embodiments shown in the figures, the results of which are presented in Tables 1-7. The data in the table are used to better understand the attached Figure 1-7 Scheme shown in , but the invention is not unnecessarily limited thereto. The temperature and flow rates in the table are not limiting of the invention, and the temperature and flow rate can have many variations in view of the technology disclosed here. The corresponding relationship between the table and the accompanying drawings is: Table 1 corresponds to figure 1 ; Table 2 corresponds to figure 2 ; Table 3 corresponds to image 3 ; Table 4 corresponds to Figure 4 ; Table 5 corresponds to Figure 5 ; Table 6 corresponds to Figure 6 ; Table 7 corresponds to Figure 7 .

[0061] Data were obtained using the commercially available process simulator HYSYS TMdata obtained, however, can also be obtained using other commercially available proce...

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Abstract

This invention relates to a process for liquefying a pressurized gas stream rich in methane in which the liquefication of the gas stream occurs in a heat exchanger being cooled by a closed-loop multi-component refrigeration system to produce a methane-rich liquid product having a temperature above about -112 DEG C. (-170 DEG F.) and a pressure sufficient for the liquid product to be at or below its bubble point. The liquefied gas product is then introduced to a storage means at a temperature above about -112 DEG C. (-170 DEG F.).

Description

field of invention [0001] The invention relates to a natural gas liquefaction method, in particular to a method for producing pressurized liquid natural gas (PLNG). Background of the invention [0002] Natural gas has become widely used in recent years due to its clean burning properties and convenience. Many sources of natural gas are located in remote regions, long distances from industrial markets for the gas. Sometimes, pipelines are used to transport the produced natural gas to industrial markets. When pipeline transportation is not feasible, the produced natural gas is usually processed into liquefied natural gas (hereinafter referred to as "LNG") for delivery to the market. [0003] A distinguishing feature of LNG plants is the need for large equipment investments. The equipment used to liquefy natural gas is usually very expensive. A liquefaction plant is made up of several basic systems, including processing gas to remove impurities, liquefaction, refrigeration,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17C9/00B23K9/173B23K35/30B60K15/03C10L3/06C22C38/00C22C38/04C22C38/06C22C38/08C22C38/12C22C38/14C22C38/16F17C1/00F17C1/14F17C3/00F17C3/02F17C7/00F17C7/02F17C13/00F17D1/08F25J1/00F25J1/02F25J3/02
CPCF25J1/0292F17C2250/03F17C1/14F25J2235/60F17C2223/035F17C2265/022C22C38/04F17C13/001F17C2265/034F17C2265/036F17C2270/0105F17C2225/035F17C2265/037F25J2230/08F25J1/0254F25J1/0231F25J2220/64C22C38/001C22C38/14F17C7/00F17C2223/033F17C3/025C22C38/12F17C2265/066F17C2203/0648F25J1/0291F25J1/0052F17C2221/033F17C1/00F17C2223/0123B23K9/173F17C2225/0123F17C2265/033F25J1/0042F25J1/0035F25J1/0085F17C2260/046F17C2270/0173B23K35/3066F25J1/025F17D1/082F25J2245/90F17C2270/0171F17C1/002F25J2230/60C22C38/06F25J1/0055F17C2225/033F25J2205/50F17C2265/068F25J1/0087F25J2290/62F25J1/0211F17C7/02F17C2205/0323B60K15/03006F17C2225/0161F17C2265/035F17C3/00F25J2205/04F25J1/0095F25J1/0212F25J1/0215F25J1/0022F17C2265/017C22C38/16C22C38/08F25J2210/04F25J1/004F25J1/0219F25J2245/02F25J2230/30F25J1/0025F25J3/02
Inventor R·R·伯温E·T·科尔E·L·基姆伯E·R·索马斯L·R·凯利
Owner EXXONMOBIL UPSTREAM RES CO
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