Why does this phenomenon occur after the solvent in the sulfur unit is replaced?
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This post was last edited by liaifeng on 2018-9-10 at 19:51. A few days ago, we replaced some of the solvents in the solvent system of the sulfur unit; these solvents were supplied by another manufacturer. As a result, the temperature returning to the tower increased significantly. We adjusted the steam supply to keep the temperature returning to the tower around 119.5°C, but the temperature at the top of the tower dropped from 104°C to 95°C. Have you guys encountered this problem?
With constant top pressure, an increase in the temperature of the reflux returning to the column at the reboiler outlet usually implies an increase in the column pressure drop.
This shows that, under the same solvent and steam flow rates, the solvent at the back is easier to separate into gas and liquid!