Let’s discuss how everyone takes safety margins into account when conducting simulations
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Everyone is doing simulations, either using ProII or Aspen and similar tools, to determine how safety margins should be considered, especially when it comes to applying these concepts in actual production – such as in the simulation of process modifications or new installations, as this is very important! This post was last edited by visavis on 2009-1-20 11:08.]
During simulation, it is usually necessary to simulate the normal, maximum, and minimum operating conditions separately. As for the safety margin for each device, you need to take this into account when evaluating each individual device
The selection of margin is considered together with the control method. Appropriate margin combined with the correct control method.
That’s too extreme. When using simulation tools, the precision is high, which means the safety margin should decrease. This safety margin is related to the precision of the calculations; if you’re not confident, it’s generally advisable to choose a value of 15%. But if you’re unsure about the simulations, the higher the value, the better. In engineering, the greater the safety, the better – yet economic considerations also need to be taken into account.
I’m a beginner with Pro2, and I’m not quite clear about how the various towers are selected. I only know about flash towers and distillation towers, but how are other types of towers and reactors such as those under reduced pressure or at atmospheric pressure represented? I hope the experts can offer some guidance. Thank you. If there is too much content, it can be sent to my email address 364191048@qq.com
With simulation tools, the accuracy is higher, but there are two scenarios to consider. If you already have the calibration data for the device, you can reduce the margin; if it is the first time being used in industrial settings, it is recommended to use a larger margin. And it avoids the embarrassment of driving. In the domestic situation, it's better to have a bit more surplus. Otherwise, you won’t be able to sleep if you drive. I think at least 20%.