What usually causes the flash tank of a material evaporation system to become filled with liquid?
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What causes the liquid level in the flash tank of the material evaporation system to rise and lead to overfilling? I would like to ask the experts for their advice
Check whether there is a problem with the liquid level control system for the drainage fluid, and see if there have been any changes in the quality of the steam. It’s sufficient to examine both the inlet and outlet aspects
There are many reasons; too much liquid entering? Was the heating insufficient? In short, it’s either a material imbalance or a heat imbalance; taking a comprehensive look will make it clear.
Check whether the proportion of heavy components in the feed has increased, whether the feed temperature has dropped, whether the pressure in the flash tank has risen, and whether the discharge from the flash tank is smooth – these are the main areas to investigate
Thank you to all the experts for their suggestions. After checking the condition of the equipment, no abnormalities were found. Later, two issues were identified: originally, the liquid fed into the flash tank was boiling at atmospheric pressure; subsequently, as the temperature dropped significantly, the pressure of the steam supplied also decreased, resulting in a lower temperature of the liquid at atmospheric pressure； During that period, the solution concentration in the flash tank was low, resulting in a decrease in density. With the same vacuum level in the flash tank, normal evaporation does not occur; due to the low density, the height of the atmospheric leg increases as well. These two factors caused the flash tank to become filled with liquid, but things have now returned to normal.