What is the purpose of the nitrogen used in the large tank area at the second plant?
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What is the specific function of the nitrogen pipeline designed by the Second Plant in the large tank area, which is connected to the methanol inlet pipeline? Is it used for nitrogen sealing? Or perform a permutation? Still purge?
It primarily serves to act as a nitrogen seal; it prevents air from entering the methanol tank when the liquid level in the tank changes, and it also helps reduce losses caused by the evaporation of methanol.
It primarily serves as a nitrogen seal to prevent methanol from evaporating and being lost.
Safety measures to contain volatile methanol vapor
If connected to a pipeline, I think it is for displacement; when connected to a tank, it is used for nitrogen sealing
Our company is connected to the imported methanol pipeline. Moreover, our company has internal floating disks. But the upper part of the tank is in contact with the atmosphere; if it is to be sealed with nitrogen, how should it be sealed? I climbed into the tank to check; the internal floating disk ensures a tight seal, and the system below is sealed as well. However, there is a possibility that the aluminum plate channels are not sealed properly.
Connecting a nitrogen pipeline to the inlet pipeline is not intended for nitrogen sealing; generally, the inlet is located at the bottom of the tank wall, and the introduction of nitrogen will cause bubbling, which in turn increases methanol losses. It should be used for purging and displacement.
Maintain positive pressure inside the tank to prevent negative pressure, which could cause the tank to deform!