I need help from experts regarding the calculations for low-temperature methanol wash absorption towers!
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I’m a beginner; I’ve gone through the beginner’s course materials from Yanhua over these two weeks. If you want to test your skills, use the low-temperature methanol washing tower for practice, but you keep making mistakes. They keep saying my feed rate is zero. I checked the input data several times; there’s no problem. I’m seeking advice from everyone! ->Simulation calculations completed ... * WARNING ZERO FEED TO THE BLOCK. BLOCK BYPASSED * WARNING AT LEAST ONE FEED HAS ZERO FLOW BLOCK BYPASSED
Why isn’t there anyone experienced to give guidance? ? Help, Ya.
Someone previously asked about the simulation of the rectisol process. Based on the information you provided, it’s unclear which module is having the issue. Without feed, it is not necessarily a boundary feed; it could also be an intermediate stream. For example, if the temperature setting for flash is low, below the bubble point temperature, then the vapor phase outlet value becomes zero, and the feed to the modules downstream of it will also be zero. Check to see which module is having the problem, then examine the settings of the previous module as well as the stream result traffic
Physical properties are the basis for simulation, bro. If you have any relevant physical property parameters for low-temperature methanol, share them so we can discuss them together!
Thank you for the advice. I’m just a beginner; even with a tower and two connected circulating coolers, there are no special property-based methods. It’s all the software’s default settings. At first, I used the PSRK method suggested online, and that’s exactly the situation I described. Later, I remembered that a Henry’s law formulation could be used in the textbook, so I adopted that formulation; however, the PSRK method could not be used simultaneously, so I switched to NRTL-2, and convergence was achieved. There is a temperature difference compared to the LINDER process package available. I don’t know why, but in any case, it finally settled down. Fortunately, it was the result of actual practice on my own without any textbooks. Hehe.