(537g) Simultaneous Process Synthesis and Heat Integration Using Building Block Superstructure
Building-block based superstructure , on the other hand, can yield non-intuitive flowsheets while considering different mass integration alternatives without a priori postulation of the processing steps and the connectivity between them. This representation is based on a two-dimensional grid structure where several different phenomena, e.g. reaction, V-L equilibrium, G-L equilibrium, etc., can be represented either as a âsingle blockâ or via multiple neighboring blocks sharing a common boundary. This provides a generic representation method for novel intensified equipment design and synthesis. Recently, this method has been also demonstrated for equipment-based representation along with detailed design formulations . Furthermore, the method has been applied for different process integration problems including mass integration, heat integration and property integration [9-10]. In this work, we will show that the building block representation method can be also used to perform simultaneous flowsheet synthesis and heat integration. The formulation is based on a single mixed integer nonlinear programming (MINLP) model. As the flowsheet connectivity and equipment types are not specified a priori, the heat integration formulation is based on a generic formulation that can handle streams with unknown identity (i.e. hot/cold). Owing to its fundamental outlook toward process synthesis, building-block superstructure with heat integration enables to design, synthesize and discover new processes including refrigeration cycles without specification of the processing routes beforehand. With this, proposed method becomes a powerful tool for the synthesis of more sustainable and energy efficient processes for a variety of applications which will be demonstrated by several case studies.
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