Comparison of Algorithms and Results of Design and Verification Versions for Calculation of Chemical Technology Apparatuses

Algorithms and results of the design and verification versions of calculating chemical technology apparatuses are compared. It is shown that the verification version of the calculation is not appropriate for the correct selection of technological equipment when organizing chemical production. On the example of separating liquid mixtures by rectification, it is shown that the large number of specified initial calculation parameters leads to a discrepancy in the material balance and the required purity of the products obtained from the separation process. An algorithm for the design calculation of a rectification unit for separating three-component liquid mixtures is proposed. It is noted that it is necessary to maintain material balances not only in the first column but throughout the entire unit.