Simulation problem in ASPEN (circulating fluid)
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In ASPEN simulations, I believe it is necessary to ensure material conservation throughout the process and avoid losses of the circulating fluid. So, apart from adding the required amount of circulating fluid, are there any other methods, such as preventing the loss of circulating fluid by force? (Of course, this can only be used in simulations.) At the same time, a similar problem arises during simulated absorption: why does the absorbing liquid (such as water) vaporize in large quantities? Since there are no condensers or reboilers available, this results in a temperature distribution in the tower that is completely different from the actual one. I’m not sure if there are any brothers who are very knowledgeable in this area; I look forward to discussing it together to improve our skills~ This post was last edited by pengyu407 on 2009-3-12 at 16:16.]
1. Design specifications 2. The feed is first flashed to determine its state… First, check whether the set conditions are correct
The absorption towers you mentioned generally have intermediate condensation and bottom reflux. Moreover, when the system is first started up, water is usually added to the bottom of the tower without any discharge, and circulation continues until the desired absorption concentration is reached at which point discharge occurs. This ensures that the water entering the system does not vaporize, which is necessary for effective absorption. Towers used for absorption that also include cooling functions operate in this manner; such towers are generally referred to as quench towers. . You can install an intermediate condenser and a large amount of bottom stream reflux.
Thank you to the two people above; what they said makes a lot of sense~~