[Q&A Question 172] 2016.10.09
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【Q&A Question 172】October 09, 2016: Why is the water level at the interface of the reflux tank in the distillation column unstable? The answer key will be available after responding; scoring is based on answering the key points. Reason 1: Temperature fluctuations after cooling. 2: Unreasonable PID parameters. 3: Problems with the level gauge bulb in the fractionation tower, which have not been properly resolved. Remedial measures: 1. Stabilize the temperature after cooling; 2. Adjust the PID parameters; 3. Replace the components of the level gauge drum in the distillation tower.
Ammonium salt crystallization at the liquid level; severe corrosion of the control valve sleeve and tank
Pressure fluctuations, unstable tower top temperature!
1. Caused by pressure fluctuations in the distillation tower； 2. Fluctuations in the amount of acidic water sent out
The distillation column is not operating stably, and the feed contains water
This post was last edited by zhenry on 2016-10-9 at 15:47: 1. Temperature fluctuations after cooling; 2. Incorrect PID parameters; 3. Problems with the level gauge in the distillation tower, which have not been fully resolved. Remedial measures: 1. Stabilize the temperature after cooling; 2. Adjust the PID parameters; 3. Replace the components of the level gauge drum in the distillation tower.
If it is a problem with the instrument, compare it with the glass panel on site and contact an instrument technician for adjustment
The separator is designed to be small, or the amount of steam injected at the site is high, resulting in a short separation time
1. Temperature fluctuations after cooling. 2. Unreasonable PID parameters. 3. Problems with the level gauge tank in the fractionation tower, which have not been properly resolved.
1. Temperature fluctuations after cooling. 2. Incorrect PID parameters. 3. Problems with the level gauge bulb in the fractionation tower, which have not been properly resolved. Remedial measures: 1. Stabilize the temperature after cooling; 2. Adjust the PID parameters; 3. Replace components in the level gauge tank of the distillation tower