Unloading method of ISO tank container

1.Unloading by gravity

The location of the cargo storage tank is lower than the height of the container tank. Under the action of gravity, the cargo can easily flow into the storage tank through the bottom valve. In order to prevent damage caused by vacuum, it is necessary to ensure that there is enough gas to fill the tank. The volume of the unloaded cargo.

ps: If the goods are toxic or dangerous, connect the return pipe

2.Unloading under pressure

With the top of the container pressurized, unloading is carried out through the bottom valve or the top valve. For the cargo transported under the protection of inert gas, nitrogen or other inert gas is usually used as the pressure medium for unloading.

ps: In any case, the pressure inside the tank must not exceed the maximum working pressure of the container.

3.Unloading with a pump

This situation is suitable for connecting the pump to the top valve or bottom valve, or inserting the hose into the manhole to pump the cargo to the storage tank at a high place. Gas or air must be introduced into the tank to fill the unloaded cargo. Depending on the characteristics of the cargo, consider whether to provide gas by opening a manhole or connecting an air valve to an inert gas source. When using high flow pumps for unloading. In order to prevent the tank body from collapsing due to vacuum, it is recommended to have a vacuum safety valve to suck in the gas.

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