Problems in the reboiler and stripping section of a distillation column
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Due to the extremely high pressure in the distillation column, we reduced the feed volume and the amount of heat transfer oil used. Yet why is the problem in the stripping section so severe, while the temperature of the reactor is very low – more than 20 degrees lower than usual?
Friend, I think the feed rate generally can’t be adjusted. After reducing the steam volume at the bottom of the tower, did you increase the reflux rate accordingly?
The stripping section has been shortened, resulting in a lower concentration of heavy components in the bottom of the column; in other words, light components have mixed in. Naturally, the temperature also decreases. Changing the position of the feed inlet cannot alter the pressure drop.
Is the return temperature higher than before?
1\ Check the temperature measuring instrument 2: whether there is mist or entrainment
When the feed rate decreases, the liquid level in the tower bottom also drops; accordingly, the steam volume at the tower bottom decreases as well, leading to a drop in temperature. The high temperature in the retention section may be due to an improper adjustment of the reflux rate. I think the backflow should be reduced.