Several issues regarding coal combustion simulation
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I have two questions regarding the simulation of coal combustion: 1. How is the characteristic method selected when coal burns? I see that in some examples PR-BM is used, while in others IDEAL is used. How is this chosen? 2. Regarding the temperature for coal combustion, is the temperature setting in RYIELD 1000 degrees or 25 degrees?
1. I personally prefer the PR-BM method. 2. Either 1000/25 is fine; the product stream from the reactor is controlled by a Fortran-based reactor simulator.
Then what’s the point of setting a temperature value in the RYEILD reactor? ?
Reply to 2# haohuang: Does that mean that the generation of this logistics has little to do with temperature? Does the Fortran reactor control the generation rate of material flow? There’s no temperature control, right?
The temperature setting of Ryield has no impact on the final result, as its reaction is virtual, and the heat is also transferred to the subsequent combustion reaction. If you have any doubts, you can try setting different temperatures. Also. In ASPEN’s built-in coal combustion example solid3, the thermodynamic equations use the ideal model.
Reply to 5# shanxg: Thank you for your replies; I now understand a bit more. One more small question: Can the heat generated by Yeyield not be transferred to the subsequent GBBIS reactor? In other words, set the temperature of the GBBIS reactor directly, rather than letting the heat generated by the reaction determine its temperature? Because when performing sensitivity analysis, it is necessary to examine the relationship between reaction temperature and the product. If the temperature of the GBBIS reactor is not set directly, how can the temperature be adjusted?
May I ask how the reaction heat Q in the ryield module is calculated? Is it necessary to set the temperature of this module to be the same as that of Rgibbs behind it?
I’ve been studying coal combustion recently; I hope the original poster can share that Aspen for Coal material