The production of catalysts such as zeolites is a complex multiscale and multi-step process. Various material properties, particle size or moisture content, well operating parameters—e.g., temperature amount composition input flows—significantly affect the outcome each process step, hence determine properties final product. Therefore, design optimization processes task, which can be greatly fac...

In this work we address the systematic and environmentally efficient design of phosphoric acid production processes through a generic modelling and optimization framework. The employed framework aims to facilitate the design of phosphoric acid production schemes that improve the performance of existing industrial processes while accounting for a number of operating, economic and environmental d...

In this work, the hierarchical decomposition methodology was used to conceptually design the production of fuel ethanol from sugarcane. The decomposition of the process into six levels of analysis was carried out. Several options of technological configurations were assessed in each level considering economic and environmental criteria. The most promising alternatives were chosen rejecting the ...

This paper presents an approach for combined mass and energy integration in process synthesis and illustrates it at the thermochemical production of crude synthetic natural gas (SNG) from lignocellulosic biomass and its separation in a membrane cascade. Based on a general process superstructure, the design problem is decomposed into non-linear unit models whose energy and mass balances are used...

The study of the behaviour of Reaction-Separation processes with Recycle (RSR) becomes relevant for an integrated design and (plantwide) control at the early stages of the conceptual design, so that not only the recycle structure of the flowsheet can be established but also the operability of the system can be assessed. On the other hand, a computer-aided process design relies on the existence ...

Control structure design (CSD) deals with the following fundamental question: Given the process flowsheet, where should the controllers be placed, or more specifically, what variables should be measured (sensors) and manipulated (valves) and how should the two sets be interconnected for safe and economic operation? These choices are not obvious for most systems encountered in practice. The prob...

The optimal design of single mixed refrigerant (SMR) natural gas liquefaction process is decisive for upgrading the liquefied (LNG) value chain and can be achieved using simulators derivative-free optimization techniques in simulation–optimization frameworks. work consumption reduced by modifying flowsheet manipulating refrigeration cycle thermodynamic conditions composition. goal this paper en...