What to do if there is a penetration through the negative-pressure tower in the C9 hydrogenation process?
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The temperatures at the bottom of the reflux pipes in the degassing tower (negative pressure tower) have all become equal; how should this be adjusted? Also, for the negative pressure tower, how should the vacuum level, reflux ratio, and the amount of gum at the top of the tower be adjusted?
The problem is not stated in sufficient detail; it needs to be explained more thoroughly.