Artur Wodołażski

This article presents multiphase numerical computational fluid dynamics (CFD) for simulating hydrothermal liquefaction of sewage sludge in a continuous plug-flow reactor. The discrete particle method (DPM) was used to analyze the solid particles’ interaction in liquid–solid high shear flows to investigate coupling computational fluid dynamics (CFD)...

The main purpose of this paper is the techno-economic analysis of hydrogen production from biogas via steam reforming in a pilot plant. Process flow modeling based on mass and energy balance is used to estimate the total equipment purchase and operating costs of hydrogen production. The pilot plant installation produced 250.67 kg/h hydrogen from 12...

This research study investigates the modelling and simulation of biomass anaerobic dark fermentation in bio-hydrogen production in a continuous plug flow reactor. A CFD multiphase full transient model in long-term horizons was adopted to model dark fermentation biohydrogen production in continuous mode. Both the continuous discharge of biomass, whi...

In this paper, dynamic behavior and optimization of aerated sludge flocs stirrer tank bioreactors in scale-up study have been investigated. Three-dimensional CFD multiphysics model of bioreactor with multiphase population balance and biokinetics with metaheurystic process optimization has been developed. Simulation of hydrodynamics-PBM-kinetic rela...

This study presents full transient, three-dimensional numerical models of a PV-TEG hybrid module coupled with single-phase inverter by co-simulation. The influence of factors, such as wind speed, solar radiation intensity, or ambient temperature on the PV-TEG system, was also examined. The numerical model was implemented using Ansys software which...

The paper deals with the modelling and simulation of an isothermal heat flow microcalorimeter that is able to measure heat flows of several µW in microliter volume test samples. The microcalorimeter model is obtained and analyzed using the computational fluid dynamics (CFD) techniques. The only unknown model parameter is a thin layer of thermal gre...

The development of methanation technology is supported by detailed modeling and process simulation to optimize the design and study of its reaction dynamic properties. The chapter presents a discussion of selected catalysts and its kinetic models in the methanation reaction. The development models of fixed-bed reactors in the methane synthesis were...

The paper presents the simulation of a catalyst-paraffin oil slurry hydrodynamics under high pressure and temperature in a convex bottom reactor with a Rushton turbine which was conducted with an application of computational fluid dynamics (CFD) modeling. An analysis to obtain a uniform distribution of solid catalyst particles suspended in paraffin...

This study aims to model a plant for synthesis dimethyl ether via methanol using syngas derived from biomass gasification. Two steps prior to dimethyl ether synthesis gas composition adjustment and purification to remove the acid components were explicitly analysed. Process simulation of the technological installation was implemented in the CHEMCAD...

Aerated stirrer tank bioreactors are commonly used to convert organics and remove nutrients through microbial floc environments. Computational Fluid Dynamic CFD based on multiphase approach coupled with gas (air) and solid (sludge flocs) population balance models (pbm) are using in co-simulation to modelling dynamics complex multiphysics phenomena...

Solid-liquid stirred reactors are commonly used in conversion of post processing gas to liquid hydrocarbons, Fischer-Tropsch synthesis and alcohols (such as methanol). Computational Fluid Dynamics (CFD) is being used to predict hydrodynamics and population balance models (PBM) for catalyst particles in scale-up stirrer reactor. Therefore, modelling...

This paper presents a model of dynamics control for continuous stirred tank reactor (CSTR) in methanol synthesis in a three-phase system. The reactor simulation was carried out for steady and transient state. Efficiency ratio to achieve maximum performance of the product per reactor unit volume was calculated. Reactor dynamics simulation in closed...

The possibility of using a membrane chip calorimeter as an on-line measurement instrument depends on the condition that the calorimeter's characteristics are linear in the measuring range of flow rates. This condition is met when the heat conduction is considered only in the plane of the calorimeter membrane and the heat losses in other directions...

Three-dimensional computational fluid dynamics numerical model was used for modeling the MeOH synthesis in a 3-phase slurry reactor on CuO/ZnO catalyst slurry in paraffin oil. The syngas hydrodynamics and hold-up, conc. profile and velocity field of slurry in the reactor were detd. For balancing the syngas bubble flow, the population balance model...

Synthesis of MeOH by hydrogenation of CO2 at varying temp., pressure and syngas compn. was numerically simulated by using Vanden Bussche & Froment kinetic model. Thermodynamic calcns. of equil. concns. of MeOH and CO were carried out.

The paper presents a computational simulation energy recovery of methanol dehydration to dimethyl ether (DME) in industrial process plant. Heat recovery technology from the viewpoint of energy saving in the environmental protection for the two key nodes in the system: reactor and distillation column was examined. Limited energy helps reduce emissio...

The extraction of necessary information and its interpretation in the case of biotechnological processes may be a difficult task. This is due to the fact that the large amounts of available data are often a combination of on-line and off-line measurements with a hierarchical structure. Moreover, the measurement data can be geographically dispersed...

The paper presents computational fluid dynamics (CFD) method to hydrodynamics modelling of slurry in a tank reactor with a mixer. Numerical calculations were performed for two blade impeller. An analysis to obtain a uniform distribution of the solid particles in the whole volume of the slurry reactor has been carried out. Selected results of hydrod...

This paper presents the possibility to use biomethane as a fuel for transportation. The emissions of pollutants from combustion of biomethane and the commonly used fuels have been compared. It was indicated that implementation of this fuel for transport results in environmental benefits: significant reduction of pollutant emissions, smog and nois...

Celem pracy jest ocena wybranych, komercyjnie stosowanych technologii zgazowania węgla w instalacjach IGCC (Integrated Gasification Combined Cycle) pod kątem efektywności technicznej i środowiskowej. Do oceny i porównania wybrano cztery technologie zgazowania różniące się sposobem podawania paliwa i złożem: strumieniowe (złoże suche i zawiesina wod...