Regulation lag issues during the commissioning of a distillation tower?
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Experts, please help: During the startup of a distillation tower, there is a process of building up the liquid level and introducing steam. I would like to ask: 1) What percentage level is appropriate for building up the liquid level? 2) By how much does the liquid level drop when steam is introduced? 3) What percentage of the set value should the initial amount of steam be? And what is the amount of steam added each time? 4) How long does it usually take for the temperature to change after steam is introduced? The equipment in my unit is a methanol dehydration tower; the temperature at the top of the tower is 64 degrees, while it is 106.2 degrees at the bottom. The set value for steam consumption is 60 T/H, the feed rate is 110 T/H, and the output rate of light components is 33 T/H. I hope experts can provide some guidance.
It depends on the recirculation rate of your reboiler, the size of the steam pipes, and the need to adjust the steam supply gradually, based on the material balance of the tower