Operability-based Approach for Process Design, Intensification, and Control: Application to High- Dimensional and Nonlinear Membrane Reactors
نویسندگان
چکیده
Process operability was originally proposed as an approach for the design and control of complex chemical processes. This approach has been applied to processes that are described by high-dimensional linear models. For nonlinear systems, an operability-based method for design and intensification of low-dimensional membrane reactor systems has also been reported. However, operability algorithms for nonlinear systems are currently limited by the problem size that they can address. In this paper, an operability-based approach for process design, intensification and control is proposed to bridge this gap in the literature by facing the challenges of process nonlinearity and model size. The proposed framework relies on the combination of classical operability concepts with nonlinear programming tools for the computation of input and output sets in high dimensions. This study opens new avenues for process intensification research connected to design and control of advanced energy systems. To illustrate the effectiveness of the developed method, a membrane reactor system for the direct methane aromatization conversion to benzene and hydrogen is addressed as a shale/natural gas utilization example. The obtained results indicate that the proposed approach can be employed as a tool for input-output analysis of complex chemical and energy systems. These results also point out computational challenges associated with the design problem in high dimensions.
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