We have a 800,000-ton hydrogenation refining unit; during operation, the reflux tank at the top of the desulfurization tower often fills up. A new line was added to send naphtha to the tank farm, but since the tanks in that area are external floating-roof tanks equipped with breather valves, hydrogen sulfide gas spreads throughout the plant
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Regarding the issue of the full level in the reflux tank at the desulfurization tower of the hydrorefining unit
A full reflux tank indicates that the load at the top of the tower is too high. Could you reduce the amount of gasoline you use in blending? Also, when you mention the desulfurization tower, do you mean the hydrogen sulfide stripping tower or the fractionation tower?