Dear Sir / Madam

Hope you are having a good day.

I'm busy simulating TSA (Temperature Swing Adsorption) at the moment.

I could manage to simulate 3 steps of the TSA cycle:

1. Adsorption

2. Heating (Desorption)

3. Cooling

I get a logical result (loading on the adsorption bed) for the first cycle. However, when I try to repeat the same steps multiple times to reach a steady state condition, I get no loading (also no flowrates) on the bed. I also have attached a screenshot of the loading curve from Aspen Adsorption. (step 1, 2 and 3 takes 900s = single cycle time and I plotted the graph for two cycles = 900s * 2 cycles = 1800s. As you can see, no loadings are happening in the 2nd cycle).

I'm well aware that this question is very vague; there could be many factors causing this problem but if any of you experienced this before, I would like to kindly ask for your precious suggestions.

Thank you for your precious time and supports.

Kind regards,

So-mang Kim