Multiscale modeling is a tool aimed at combining mathematical descriptions of different process scales into a single, properly tailored scale integration hierarchy allowing for reliable modeling and simulation. This concept has already been successfully applied in deriving accurate state variable distributions for processes that exhibit full spatiotemporal variation and thus do not allow for th...

Fischer-Tropsch synthesis is one of the most important catalytic reactions that convert the synthetic gas to light and heavy hydrocarbons. One of the main issues is selecting the type of reactor. The slurry bubble reactor is suitable choice for FischerTropsch synthesis because of its good qualification to transfer heat and mass, high durability of catalyst, low cost maintenance and repair. The ...

A vast majority of material processing in industry involves homogeneous phase reactions. These reactions are carried out in batch mode as well as continuous mode. The empty tubular reactors are widely used reactor systems for continuous processing in chemical and allied industry. The heat effects due to these reactions necessitate the use of some heat removal/addition system with these reactors...

This paper presents the results of a calculation code approach providing solution to point kinetics problem for IVG.1M research reactor National Nuclear Center Republic Kazakhstan and allowing simulation dynamic processes going on during start-ups, including changes in thermal state all its elements, regulator displacement, accumulation absorbers fuel, beryllium reflector. A mathematical descri...

Dynamic reactor operations will gain interest with the increase of intermittent electricity from renewable sources. Periodic operation catalytic reactors can also be used for kinetic studies better parameter estimation than steady-state operation. This methodology is exemplified case acetylene hydrogenation over Pd/α-Al2O3 using small amplitude flow oscillations. It allows evaluation several el...