The liquefied natural gas sent from the LNG liquefaction plant and the LNG unloading station is sent to the LNG full-capacity tank for storage through the cryogenic insulation pipe. Liquefied natural gas (LNG) is output by the LNG submersible pump, the flash vapor (BOG) generated by the LNG storage tank is recovered through the BOG system, and the gas after the safety valve enters the flare or is released through the safe release gas (EAG) system.

　　Inlet, purge, and pre-cooling system

　　◆Liquid inlet system: the liquefied natural gas sent from the LNG liquefaction unit or the unloading station is sent to the 20000m³ LNG storage tank through the low-temperature process pipeline for storage, and the liquid can be fed through the top liquid inlet pipeline or the bottom liquid inlet pipeline (two sets), and the top liquid inlet Remote control emergency shut-off valves (two sets) are required to be installed in the liquid inlet pipeline at the bottom.

　　◆Purge system: The room temperature and low pressure nitrogen from the process unit area enters the main container through the purge loop pipeline set in the main container, enters the bottom insulation layer of the storage tank through the bottom insulation layer nitrogen purge line, and is purged through the submersible pump. Enter the submersible pump well to ensure the replacement of air in all corners of the storage tank and the drying of the internal insulation materials, and the top of the secondary container is equipped with a nitrogen purge exhaust line, the bottom insulation layer is set with two purge exhaust pipes, and the interlayer space is set One ring-shaped exhaust pipe is used to discharge the replacement air during purging.

　　◆Pre-cooling: The storage tank is installed under the suspended roof plate, and 3 symmetrical pre-cooling pipelines with nozzles are evenly distributed, and the root valve of the pipeline is set to ensure that the pre-cooling is cut off. The storage tank is pre-cooled using liquid nitrogen medium, and liquid nitrogen is pre-cooled. The tank truck access point is located in the liquid inlet header at the lower part of the tower ladder.

　　Durr equipment is now available

　　3-250 cubic liquid argon vacuum storage tank

　　200-3000 cubic atmospheric cryogenic liquid argon storage tank