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Liquefied fuel gas system and method

A fuel gas and fuel technology, applied in the field of liquefied fuel gas system, can solve the problems of increased overall equipment weight, high initial investment cost, complex system, etc., to achieve increased efficiency and safety, low cost, and reduced overall cost Effect

Active Publication Date: 2018-08-31
SHELL INT RES MAATSCHAPPIJ BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The system of US-3302416 is relatively complex, resulting in a relatively high upfront investment cost (CAPEX) and increased weight of the overall equipment
[0012] Therefore, conventional transport equipment such as LNG fueled ships have applied gas consumers which generally have limited efficiency at the lower speed of the transport equipment to burn the boil-off gas, or steam reliquefaction technology which requires relatively expensive equipment

Method used

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  • Liquefied fuel gas system and method
  • Liquefied fuel gas system and method
  • Liquefied fuel gas system and method

Examples

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Embodiment Construction

[0060] LNG is a mixture of hydrocarbon gases, all of which have different boiling points. Fractional distillation of the gas mixture takes place in the storage tank due to the different boiling points of the respective gases under the conditions normally stored in the tank from which some of the liquefied gas is vaporized. Higher boiling components are less likely to vaporize than lower boiling components, which results in vaporized products with lower B.t.u. content and a different composition from the remaining liquid inventory in the tank. Examples of LNG compositions for exemplary compositions of "rich" LNG (i.e., LNG includes substantial amounts of components heavier than methane, such as ethane and propane) and "lean" LNG (including moderate amounts of heavier components) are provided in the table below.

[0061] Typical LNG fuel system designs incorporate vapor removal as a means of managing boil-off gas (BOG) within the LNG tank. This vapor removal method has been us...

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PUM

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Abstract

The present disclosure provides a method of fueling a transporter with liquefied fuel gas, the method comprising the steps of: providing a transporter, the transporter comprising a fuel gas storage tank for holding a liquefied fuel gas, a sub-cooler fluidly connected to the fuel gas storage tank, and a consumer; pumping the liquefied fuel gas from the fuel gas storage tank into the subcooler to create subcooled liquefied fuel gas; and introducing the subcooled liquefied fuel gas into the fuel gas storage tank. The subcooled liquefied fuel gas may be sprayed into a vapor space of the fuel gas storage tank. The method further comprises: pumping the liquefied fuel gas from the fuel gas storage tank to provide pressurized liquefied fuel gas; vaporizing the pressurized liquefied fuel gas to provide vaporized fuel gas; and providing the vaporized fuel gas to the consumer for propelling the means of transport using the vaporized fuel gas as a fuel.

Description

technical field [0001] The present disclosure generally relates to liquefied fuel gas systems and methods for fueling transportation equipment with liquefied fuel gas. Transportation equipment or vehicles may include, for example, trucks, trains or ships. The liquefied fuel gas may include, but is not limited to, liquefied natural gas (LNG). Background technique [0002] As the world's population grows and lives in cities, our roads, ports and airports are more congested than ever. A range of vehicles and fuels will be required to help meet this increased transportation demand. In the future, liquefied fuel gases such as liquefied natural gas (LNG) may form a larger portion of the transportation energy mix as areas such as higher vehicle efficiencies, biofuels, hydrogen and electrical mobility develop. LNG offers the added advantage of reducing CO2 emissions. In addition, the use of LNG and other liquefied gases as transportation fuels also generally limits emissions of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C7/04F17C1/00F17C13/00
CPCF17C1/00F17C13/004F17C2221/033F17C2223/0161F17C2223/033F17C2223/046F17C2225/0169F17C2225/033F17C2225/044F17C2227/0135F17C2227/0157F17C2227/0178F17C2227/0355F17C2227/039F17C2227/0393F17C2250/0439F17C2250/0452F17C2250/0456F17C2250/0636F17C2260/056F17C2265/035F17C2265/066F17C2270/0105F17C2270/0171F17C2270/0173F17C2250/0652F17C7/04F17C3/025F17C1/005
Inventor W·R·哈钦斯S·J·S·哈特曼
Owner SHELL INT RES MAATSCHAPPIJ BV