How to calculate the BOG volume in the cryogenic tank of an LNG liquefaction plant
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The Chengdu Shenleng process package is being used. Inside the liquefaction cryogenic tank, the BOG gas is generated as a result of flashing in the LNG flash tank; this gas flow is controlled by a pressure regulating valve (DN50), with a set opening pressure of 66 kPa. Now, we want to determine the amount of BOG gas that is generated through flashing. How can this be calculated?
Is there also a flash tank inside the cold box? Haven’t seen it before; is it a new technique? Personally, I don’t think it’s necessary to install this LNG flash tank
It’s not a new process, right? The flash tank is used to flash off the unliquidified natural gas and substances that cannot be liquidified, such as nitrogen
The LNG flash tank is likely to contain a relatively high amount of non-condensable light components such as hydrogen, or there are specific requirements regarding the BOG pressure; therefore, simulation calculations must be carried out using software tools such as HYSYS, ASPEN Plus, and ProII