Abstract: In order to deal with BOG in time,quickly reduce the pressure of the cargo tank of carrier,and ensure that the temperature and pressure of the cargo in the cargo tank are within the appropriate range,thereby improving the safety and shipping capacity of the carrier,based on the components of LNG and cooling water,and considering the main circulation,processing capacity,floor area,safety,model types and other factors,a cryogenic flow scheme is designed to provide a new idea for breaking through the marine BOG reliquefaction technology.

Key words: BOG, security, processing capacity, cryogenic flow scheme