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Simultaneous synthesis of heat-integrated water networks by a nonlinear program: Considering the wastewater regeneration reuse |
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| Authors: | Fangyou Yan Wei Li Jinli Zhang |
| Affiliation: | 1.School of Chemical Engineering and Material Science, Tianjin University of Science and Technology, Tianjin 300457, China;2.Key Laboratory for Green Chemical Technology MOE, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;3.Key Laboratory of Systems Bioengineering MOE, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China |
| Abstract: | Heat-integrated water network synthesis (HIWNS) has received considerable attention for the advantages of reducing water and energy consumptions. HIWNS is effective in water and energy sustainability. Mixed integer non-linear programming (MINLP) is usually applied in HIWNS. In this work, a novel nonlinear programming (NLP) was proposed for HIWNS by considering wastewater reuse and wastewater regeneration reuse. Integer variables are changed to non-linear equation by the methods for identifying stream roles and denoting the existence of process matches. The model is tested by examples with single and multiple regeneration unit problems. The testing results showed that the NLP is an alternative method for HIWNS with wastewater reuse and regeneration reuse. |
| Keywords: | None-linear programming Heat-integrated water network synthesis Wastewater regeneration reuse |
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