LNG filling process

1. What is the principle and process of unloading from tanker to tank?
The principle is pressure push, high pressure sends low pressure, the process is that the liquid phase is connected to the liquid phase, and the gas phase is connected to the gas phase.
2. What is the filling principle and process from tank to tank car?
The principle is pressure push, high pressure sends low pressure, the process is that the liquid phase connects the liquid phase, and the gas phase connects the gas phase
3. What is the filling principle and process from tank to cylinder?
Tank-filled steel cylinders are generally in gaseous state, and the process is cryogenic pump (boost) – vaporizer (gasification) – pressure regulating device (stabilized pressure) – filling row. Make
The liquid is cryogenic pump (boost) – pressure gauge (see pressure)

For the first liquid filling (the inner cylinder is at normal temperature), the steps are as follows:
Connect the liquid filling pipeline, and the medium gas blows off the moisture and dust in the liquid filling connection pipeline. The gas phase balance valve and liquid inlet valve of the storage tank are respectively connected with the gas phase of the tank car.
The phase balance valve is connected with the liquid outlet valve.
Open the exhaust valve, fill the indicator valve, the combined valve of the liquid level gauge is in a balanced state, and close the residual liquid valve.
Open the upper inlet valve and slowly fill the storage tank from the upper part. After the exhaust valve is exhausted stably, the filling speed can be accelerated, so that the combination valve of the liquid level gauge is at
In the open state, after the liquid level gauge displays, open the lower liquid inlet valve. At this time, the upper liquid inlet valve can be closed, and the liquid can be fed only from the lower part, or can be fed from the upper and lower parts at the same time.
Filling is complete when fluid flows from the fill indicator valve. First close the liquid outlet valve of the liquid source, close the upper and lower liquid inlet valves, close the full indicator valve, and open the residual liquid
valve, then remove the charge line.