Errors in Aspen simulation during filler absorption

Thread Content

What is being simulated here is the physical absorption process in a packed tower, where a concentrated LiBr solution absorbs water vapor to become a dilute solution. The Ratefrac program was used for this simulation, and the following errors occurred: – Processing input specifications... INFORMATION: Pure component parameters for some components are retrieved from the SDF table. These parameters are used with the ELECNRTL option set, unless you enter your own parameters in the PROP-DATA paragraphs. The parameters retrieved for the H2O component are: VLBROC PLXANT. ** Error while checking input specifications. Block name: B1; Model name: RATEFRAC. In the “CHEMISTRY GLOBAL” paragraph, there are no “STOIC” sentences. ! Errors while processing input specifications. What does it mean that there are no “STOIC” sentences in the “CHEMISTRY GLOBAL” paragraph? In my reaction, under Chemistry Global, the reactions shown are: LIBR(S) Salt → LIBR(S) LI+ + BR-; SALT1 → Salt; SALT1 → LI+ + BR- + H2O. LIBR:(S) Salt → LIBR:(S) LI+ + BR- + 2 H2O. LITHI-01 undergoes dissociation: LITHI-01 → LI+ + BR-. This post was last edited by amo*cillin on 2009-4-10 at 15:10