Download - Vortex Tube Cryogenic & Pressurized Liquid Vaporization

Vortex Tube Cryogenic & Pressurized Liquid Vaporization

An application of the innovative technology of

Prepared by: Gasficient Consulting Services

Copyright 2104 - Gasficient Consulting Services

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Cryogenic & Pressurized Liquids

• Cryogenic Liquids - stored at very low temperatures so remain liquid at low pressure (eg LNG, CO2, N2, O2)

• Pressurized Liquids - stored at ambient air temperature but under pressure so remain liquid (eg Propane, Butane, LPG)


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Vaporization of Cryogenic & Pressurized Liquids

• Cryogenic & Pressurized liquids require heat to gasify

• Where in-tank vaporization does not produce sufficiently rapid vaporization liquid is drawn off and heated outside the tank.

• Often a heat source is used to warm the liquid and to overcome the latent heat of vaporization


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LPG Liquid Vaporization Outside Tank


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Vortex Tube Liquid Vaporization (LPG)

• Vortex tube reduces vaporized LPG pressure and provides mass and energy separation resulting in hot and cold stream outlet from the vortex pressure reducer.

• Vortex tube pre-heats the liquid LPG upstream of the LPG vaporizer thus reducing the fuel consumption of the conventional vaporizer

• The air source heat exchanger warms the vortex cold fraction to compensate for the heat transferred to the liquid LPG


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Process Description

• LPG is vaporized at the storage pressure in the tank (eg 6 bar)

• Pressure reduction (eg to 1 barg) required for distribution or utilization

• Vortex pressure reducer with an integral heat exchange chamber that is warmed due to the mass and energy separation

• Liquid LPG is pre-heated before it enters the LPG vaporizer.

• LPG vapor cold fraction is warmed in the ambient air heat exchanger thus ensuring the vaporized LPG remains in vapor form


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LPG Vaporization


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Benefits

• Enhance LPG vaporization to reduce the amount of energy, greenhouse gas emissions and the expense of operation

• Vortex tube can provide a reduction (eg 10-15% depending on ambient air temperature) in fuel required for LPG vaporization


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Conclusion

• Discussion