BOG A BOG recondenser using venturi tube

摘要

The present invention proposes an apparatus for re-liquefying BOG generated by vaporization in an LNG storage tank. The apparatus of the present invention comprises a BOG pipeline (La) for guiding the BOG inside the LNG storage tank to the outside, and an LNG pump (28) for sending the LNG inside the LNG storage tank to the outside through the LNG pipeline (Lb). include In addition, the venturi tube 22 receives LNG from the LNG pipeline Lb and lowers the pressure while passing through the internal throat, and receives the BOG through the throat through the BOG pipeline. And, downstream of the venturi tube, a mixing pipeline (Lc) for re-liquefying BOG by heat exchange by mixing BOG and LNG coming out through it is installed. And the control valves (Va, Vb, Vc) that are respectively installed in the BOG pipeline (La), the LNG pipeline (Lb), and the mixing pipeline (Lc) to control the flow rate flowing therein are installed. desirable.