What percentage should the operating gas velocity be set at when simulating an amine liquid regeneration tower?
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Or should I test a few different air speeds?
Did you use the AMSIM module or simulate it directly with PRO/II’s columns? Under normal circumstances, for a regeneration tower, it is sufficient to adjust the heat load through defined operations, or to adjust the operating temperature and pressure. If tower diameter design & calculation (sizing) is involved, then define the percentage of flooding rate again
Module: after entering the rich liquid material, pressure, and temperature, the gas velocity ratio needs to be entered at the tower section; the default value is 75%
I want to do a calculation for the regeneration tower now; do I need to know the heat load applied to the reboiler first?
75% can be chosen; if more precise data is not available, this serves as the default & recommended value
Two methods: Define the heat load to check your absorption efficiency, or define the reflux ratio to verify your separation efficiency and heat load in turn
It’s not easy to calculate this reflux ratio. The gas phase coming out of the cooler goes to the sulfur treatment unit; part of the liquid phase is recycled while another part is sent outside, and there is no flow meter for that outgoing stream
If defining the heat load, should it be calculated using specialized software or roughly estimated with formulas?