BOG processing apparatus
AssigneeChiyoda Corporation
InventorTakeshi Ikeda
Life of this patent
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Abstract
The present invention is to provide a BOG processing apparatus. The BOG processing apparatus includes a cooling device, a second cooling device, and a recovery device. The cooling device has a cooling drum, a BOC inlet part introducing the BOG, a first spray spraying LNG in an upward direction, a first filled layer contacting with the LNG and the BOG, a second spray spraying the LNG in a downward direction, a third spray spraying the LNG in a downward direction, a second filled layer adsorbing mist in the BOG, and a mist eliminator eliminating the mist in the BOG.
Claims11
A BOG processing apparatus for processing boil-off gas (BOG) generated from liquefied gas in a liquefied gas storage tank comprising:
- a cooling device for cooling the BOG by thermal exchange with the liquefied gas;
- and
- a recovery device for recovering a remaining liquid of the liquefied gas remaining for use in cooling by the cooling device, or a mixed liquid in which liquid of the BOG cooled and liquefied by the cooling device and the liquefied gas are mixed,
- wherein the cooling device includes
- a cooling drum formed in a cylindrical shape extending up and down, and circulating BOG from below to above;
- a BOG inlet part introducing the BOG from a lower portion of the cooling drum into an inside of the cooling drum;
- a first spray provided above the BOG inlet part and upwardly spraying the liquefied gas;
- a first filled layer provided above the first spray and bringing the liquefied gas into contact with the BOG;
- a second spray provided above the first filled layer and downwardly spraying the liquefied gas;
- a BOG outlet part provided in an upper portion of the cooling drum and sending the BOG cooled;
- a liquid outlet part provided in the lower portion of the cooling drum and sending the remaining liquid or the mixed liquid to the recovery device;
- a BOG supply line connected to the BOG inlet part and supplying the BOG from the liquefied gas storage tank;
- and
- a BOG circulation line connected to the BOG supply line and circulating the BOG to the BOG supply line, wherein the BOG is introduced from the BOG outlet part.
Dependencies are inferred from the claim text.