Suiting Dynamic Models of Fixed-Bed Catalytic Reactors for Computer-Based Applications

24 Fixed Film Stationary Bed and Fluidized Bed Reactors

Computer aided design of pellets for fixed-bed reactors performing Michaelis-Menten reactions

The problem of designing the pellet characteristics for existing fixed-bed reactors has been studied. The reactor is assumed to be a unidimensional, plug-flow, heterogeneous type. Three particle shapes, two intraparticle mass transfer mechanisms, two kinds of film resistance to mass transfer and two poisoning patterns have been considered. An economic balance to both product market price and pe...

Investigation of SLIM Dynamic Models Based on Vector Control for Railway Applications

Although, Single-Sided Linear Induction Motor (SLIM) utilization has increased in railway applications due to their numerous advantages in comparison to Rotational Induction Motors (RIM), there are some sophistication in their mathematical models and electrical drive. This paper focuses on the problems of SLIM modeling, with assuming end-effect on the basis of Field Oriented Control (FOC) as a ...

Numerical simulation of catalytic reactors by molecular-based models

Investigations in the field of high-temperature catalysis often reveal complex interactions of heterogeneous, homogeneous, and radical chemistry coupled with mass and heat transfer. The fundamental aspects as well as several applications of high-temperature catalysis are covered in the light of these interactions. Benefits of molecular-based numerical simulations are discussed. Furthermore, thi...

New model for performance prediction in fixed-bed reactors based on the approach of the unused bed zone.

In the present study a practical model useful for designers dealing with pilot scale reactors for pollutant control has been developed. Investigations were undertaken for a single-component lead study on New Zealand clinoptilolite at the temperature of 25+/-1 degrees C. Fifteen runs under different operating conditions such as particle characteristics (expressed as d*(p)/D), column geometry (as...