Do I need to set the weight percent glycol in the Make-Up/Blow-Down operation as in the amine unit simulation?
No, the glycol composition is determined by the regenerator performance. In an amine system, the ratio of amine to water is to be held constant resulting in different make-up rates for amine and water. The fact that two separate make-up flows are present in the amine system requires the additional specification to satisfy the extra degree of freedom. However, the make-up composition of glycol and amine must be specified either in the make-up stream or in the Make-Up/Blow-Down block “Makeup Bulk Composition” column. (A typical make-up composition for TEG is 99.9 wt % TEG and 0.1 wt % water). See ProMax help for details on specifying the Make-Up/Blow-Down.
