◆Storage tank discharge (loading): Each storage tank is equipped with 2 submersible pumps (single flow: ~450m³/h, head: 140m.), and the discharge pipe of the submersible pump is equipped with a remote control pneumatic emergency shut-off valve , LNG orifice flow meter, and set the backflow pipeline after the pump, install check valve and root stop valve after each pump column discharge pipe is led out, then collect the discharge pipe, install 1 orifice plate flow rate on the discharge main pipe Meter, 1 emergency shut-off valve.

　　◆The submersible pump is equipped with a backflow pipeline after the pump, and a low-temperature regulating valve is installed on the main backflow pipeline after the pump. The cryogenic liquid circulates.

　　BOG recovery system

　　◆When the gas pressure in the storage tank rises to 20KPa (adjustable according to the process package), the low-temperature automatic control valve opens, and the gas is discharged into the BOG heater or low-pressure torch to balance the pressure in the storage tank; when the gas pressure in the tank drops to At 15KPa (adjustable according to the process package), the low-temperature regulating valve is closed to maintain the pressure of the storage tank within a safe range.

　　air supplement system

　　◆If the gas pressure in the storage tank drops to 5KPa, the low-temperature automatic regulating valve on the gas supply pipeline will open. When the pressure of the storage tank rises to 10KPa, the gas supply will be stopped (the specific adjustment can be made according to the liquefaction process package) to keep the tank pressure at one Operate within a safe pressure range.

　　EAG vent line

　　◆When the gas pressure in the storage tank is higher than 25KPa, the vent regulating valve opens, and the gas inside the storage tank is discharged into the low-pressure flare system or the tank top discharge header to ensure the safety of the storage tank.

　　◆A nitrogen seal is installed in front of the flame arrestor of the LNG storage tank top relief pipeline to prevent the moist air from freezing and blocking the flame arrestor.

　　Safety control pipeline

　　◆Pressure and vacuum relief valve as an integral part of the tank. The top of the storage tank is equipped with 2 sets of safety venting pipelines, equipped with 1 set of tank pressure relief valves, one for use and one for backup. There are always two sets of pressure relief valves in operation. When the gas pressure of the storage tank reaches 28KPa, the pressure relief valve opens , Exhaust pressure reduction.

　　◆Three sets of vacuum suction valves are set on the top of the storage tank, two sets of suction valves are always in operation. When the gas pressure of the storage tank reaches -0.3KPa, the suction valve opens to increase the gas pressure in the storage tank. .

　　Durr equipment is now available

　　3-250 cubic liquid argon vacuum storage tank

　　200-3000 cubic atmospheric cryogenic liquid argon storage tank