The study proposes the evaluation of residence-time distribution (RTD) in situ an industrial dryer for production recycled polyester fibers (PES) from colorless polyethylene terephthalate (PET) flakes without interruption production. A disturbance pulse type was employed, which tracer (blue PET flakes) had previously been crystalized and its concentration obtained according to time at outlet. A...

The present work focuses on investigating the residence time behavior of microparticles in a concurrent downer reactor through experiments and numerical simulations. For simulations, three-dimensional multiphase model was developed using Euler-Lagrange approach. were performed 0.8 m-long steel with gravitational particle injection. effects different operating conditions, e.g., sheath gas veloci...

A regression model for simulating residence time distribution (RTD) of turbulent flows in helical static mixers is proposed and developed to predict the residence time distribution in static mixers. An efficient method is required to estimate the RTD and the sole means of achieving this is through detailed regression model. The RTD was calculated numerically by regression model. The results of ...