The floating liquefied natural gas production, storage and unloading facility of the present invention includes a gas inlet system for introducing natural gas from a gas field, a pretreatment system for pretreating the natural gas introduced by the gas inlet system, and natural gas pretreated by the pretreatment system A liquefaction system that liquefies By including, according to the present invention, it is possible to operate a floating liquefied natural gas production, storage and unloading facility capable of more efficiently recovering and processing BOG generated in the LNG storage tank.
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