PRESSURE MANAGEMENT SYSTEM FOR STORAGE TANK CONTAINING LIQUEFIED NATURAL GAS

A pressure management system for a storage tank of liquefied natural gas (LNG) is disclosed. The storage tank includes an outlet, an ullage space, and a condenser coil. The pressure management system includes a boil-off gas (BOG) shut-off valve, an expansion valve, a vortex tube, and a combustor. Th...

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Bibliographische Detailangaben
1. Verfasser:	FOEGE AARON G
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED,LIQUEFIED, OR SOLIDIFIED GASES FIXED-CAPACITY GAS-HOLDERS FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOWOF GASES OR LIQUIDS FLUID-PRESSURE ACTUATORS HEATING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING STORING OF DISTRIBUTING GASES OR LIQUIDS VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED ORSOLIDIFIED GASES WEAPONS
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Beschreibung
Zusammenfassung:	A pressure management system for a storage tank of liquefied natural gas (LNG) is disclosed. The storage tank includes an outlet, an ullage space, and a condenser coil. The pressure management system includes a boil-off gas (BOG) shut-off valve, an expansion valve, a vortex tube, and a combustor. The BOG shut-off valve connected to the outlet, facilitate passage of a BOG stream when the storage tank is at a threshold pressure. The BOG stream is expanded in the expansion valve and passed through the vortex tube to split the BOG stream into a hot stream and a cold stream. The cold stream is passed through the condenser coil present in the ullage space of the tank to cool and condense the BOG inside the storage tank. The hot stream and the cold stream are combusted in the combustor to produce power.