Optimization Modeling for Advanced Syngas to Olefin Reactive Systems

Article Engineering, Chemical

Prediction of the Thermal Runaway Limit and Optimal Operation of Heat Transfer-Limited, Fixed-Bed Reactor Systems

Can Ekici et al.

Summary: This research presents a new prediction for thermal runaway in fixed-bed reactor systems, taking into consideration internal thermal resistance and radial temperature gradients. Comparing with common criteria, the study found that even in systems where heat transfer is negligible, empirical design criteria for thermal runaway can be inaccurate. For cases where internal heat transfer is relevant, the proposed runaway limit is more stringent than limits derived from simpler 1-D models. The results also demonstrate that the thermal runaway limit can be accurately determined using numerical or analytical methods based on the alpha model.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2021)

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Article Engineering, Chemical

Kinetics of Direct Olefin Synthesis from Syngas over Mixed Beds of Zn-Zr Oxides and SAPO-34

Joseph F. DeWilde et al.

Summary: This study demonstrates the direct conversion of syngas into a mixture of olefins and paraffins using a packed bed containing a physical mixture of Zn-Zr mixed oxide catalyst and SAPO-34. The kinetic measurements confirm olefin hydrogenation predominantly occurs over the SAPO-34 catalyst. A developed kinetic model and technoeconomic analysis highlight the importance of considering the olefin-to-paraffin ratio as a key performance metric for commercial scale syngas conversion.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2021)

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Article Multidisciplinary Sciences