不必用惰性气体置换空气。
另外，在开工置换阶段，由原来先用燃料气置换改为直接用液化石油气置换，这样不需排放轻组分至火炬，减少了气体损失。
In addition, LPG is now directly used as displacing gas instead of the fuel gas at the start up period, and no light component exhausts to the flare system, so the gas loss is reduced.
作为置换剂起头向下移动的活塞继续走高以及冷气体转移到汽缸热端以及循环再次起头。
As the displacer begins to move down the piston continues to move up and the cold gas is transferred to the hot end of the cylinder and the cycle starts again.
在液化石油气运输船中，要进行储罐内气体的置换作业，其安全第一，关系重大。
In LPG transporting ship, the most important thing is the safety in the case of displacing operation of LPG in tanks.
在液化石油气运输船中，要进行储罐内气体的置换作业，其安全第一，关系重大。
In LPG transporting ship, the most important thing is the safety in the case of displacing operation of LPG in tanks.
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