(620f) Property-BASED MASS INTEGRATION Considering Efficient Property Operators

Authors: 
Ponce-Ortega, J. M., Universidad Michoacana de San Nicolás de Hidalgo
Serna-González, M., Universidad Michoacana de San Nicolás de Hidalgo


The proper use of the resources is an ongoing need in all processes because of the global competitiveness and the environmental deterioration. One of the most used strategies to have an efficient use of resources is the mass integration, which traditionally has been carried out based on the composition of waste streams; however, the waste streams characterization is highly challenging because the large number of components presented. Recently have been reported a series of methodologies for the synthesis of mass integration networks based on properties considering the recycle, reuse and regeneration of waste streams, these methodologies consider property balances instead of component balances in the mixing points; however, several of the property operators considered in the property balances produce significant errors in some specific cases. Therefore, this paper proposes a disjunctive model for a better prediction of mixing properties, within a recycle, reuse and regeneration strategy, considering simultaneously the effects of temperature that drastically affect the value of some properties of the streams (depreciated in most of the previous works). The model considers to synthesize the water network that meets the process and environmental constraints based on properties at the minimum total annual cost. The methodology proposed has been applied to several cases of study, and the results show that the model accurately predicts better mixing properties than the models previously reported, without numerical complications because the model avoids nonconvex terms.