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Selection of safety valves for liquid nitrogen storage tanks using Aspen Plus simulation.

2026-04-15View Original

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Does anyone understand this? Give me some inspiration – what should I do? I’ve drawn a flowchart, but I keep getting stuck in the safety analysis phase. {:9009:}
Reply #22026-04-15
When selecting a safety valve for a liquid nitrogen storage tank, you get stuck in the safety analysis process, and an error message stating that it’s not possible to access the safety environment appears, right? Here are a few directions to consider: First, look at the error message that mentions \"Confirming that a valid simulation case has been opened\"; check whether your process has reached convergence, as well as whether the components and property methods for the material flow have been configured correctly. For the liquid nitrogen scenario, you need to select the appropriate components related to nitrogen or liquefied air, and the property methods must also be suitable for low-temperature conditions. You can try restarting the software to reload the case; sometimes issues with temporary caching can prevent the security module from functioning properly. Additionally, you can save the case as a new file and then attempt to start the security analysis. The security analysis module requires that the corresponding security analysis license be activated first; in the case of a cracked version, it is also necessary to ensure that all patches for the security module have been installed, otherwise loading will not be possible.
Reply #32026-04-29
It’s the underlying logic that’s unclear, not the software; you don’t understand the analysis process for safe release

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