What could be the reason for condensed water to be absorbed and separated from the outer wall of the first-stage degassing tank?
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What could be the reason for condensate water to be absorbed and separated from the outer wall of the first-stage degassing tank, along with large fluctuations in vacuum level?
A large amount of volatile substances evaporate, absorbing heat in the process
There are many volatile substances; C4, C5, C6, etc. are liquefied by the cooler and then vaporized in the reflux tank, absorbing heat in the process
Yes, the condensate inside the tank evaporates due to the increased vacuum level, absorbing a large amount of heat which causes the condensable gases outside to condense!
Large fluctuations in vacuum level indicate unstable operation. The formation of condensed water through endothermic decomposition on the outer wall of the primary separation tank for reducing pressure suggests unstable operation at atmospheric pressure. The problem can be resolved by removing the light oil from the atmospheric pressure tower
The extraction rate of light components at atmospheric pressure is insufficient, causing the light components to enter the vacuum tower? Is that the correct understanding? Then how should the atmospheric pressure tower be adjusted? Should the exit temperature of the atmospheric pressure furnace be increased, or should the amount of material taken out via the side streams be increased? I’m a beginner seeking advice
It is not possible to increase the outlet temperature of the furnace; only the yield of light oil can be increased. To boost the yield of light oil, it is necessary to properly control the three types of balances, which represents a challenge in operation