How does Aspen simulate Hg in flue gas?
Thread Content
Recently, I used Aspen to simulate flue gas undergoing washing, and found that the Hg in the flue gas was washed into the liquid phase, which clearly does not correspond to reality. How can Aspen be used to simulate Hg in flue gas?
The Aspen Plus software itself does not include a simulation module for mercury in flue gases. However, Hg in flue gas can be simulated by custom components. Here is one possible method: 1. In Aspen Plus’ database, select an existing component similar to Hg (such as H2O) as a substitute. 2. During the simulation, rename this substitute component as Hg. 3. When adjusting the model, it is necessary to set the physical properties of Hg (such as density, boiling point, etc.) to the actual properties of mercury. 4. If the transformation and migration of Hg in flue gas need to be considered, corresponding reaction and mass transfer models must be introduced based on the actual conditions. It should be noted that custom components are merely placeholders to represent similar substances, and they cannot provide Hg-specific property and behavior models. Therefore, this method should be used with caution when simulating Hg in flue gas, and it needs to be verified and adjusted based on actual conditions. .