11th July 2018

13:00 - 13:15 - Welcome and Introduction with Prof Chris D Rielly & Dr Gül Özcan-Taşkın

13:15 - 13:45 - Product Formulation - Prof Jerzy Baldyga

13:45 - 15:00 - Rotor-stators: geometries, design configurations, fluid dynamics - Prof Rich V Calabrese 

15:00 - 15:30 - Break

15:30 - 16:30 - Reactive mixing - Prof Jerzy Baldyga

16:30 - 17:00 - Workshop with open questions or tour of laboratories

12th July

09:00 - 10:00 - Liquid-liquid dispersion - Prof Rich V Calabrese 

10:00 - 11:00 - Powder dispersion and delamination in liquids - Dr Gül Özcan-Taşkın

11:00 - 11:30 - Break

11:30 - 12:15 - Population balance modelling - Prof Jerzy Baldyga

12:15 - 12:45 - Workshop with open questions or tour of laboratories

Product Formulation - Prof Jerzy Baldyga

In this multidisciplinary area which involves formulation scientists and engineers, the talk provides the perspective of the chemical engineer and will touch how the knowledge of fluid dynamics can be applied for product formulation. Examples will include bioproducts with reference to cell damage and emulsions with references to the rheology of concentrated and dilute dispersions formed.

Rotor-stators: geometries, design configurations, fluid dynamics - Prof Rich V Calabrese 

After a brief description of different rotor-stator designs used in the chemical and related industriesand a review of turbulent flow, results using advanced measurement techniques (LDA, PIV) and simulation methods (RANS, LES) to study the turbulent velocity and energy fields will be presented.

Emphasis will be placed on understanding the impact of the underlying fluid dynamics on dispersion and emulsification processes.  Measurement prediction and correlation of power draw, estimation of energy dissipation rate and turbulent scales, and applications to scale up will be discussed.  Examples will include both bladed rotor and slot and tooth devices. 

Reactive mixing - Prof Jerzy Baldyga

The role of mixing in reactive systems will be the main emphasis of this talk which will start with relevant concepts. Chemical test reactions in homogeneous systems and diluted emulsions, concept of energetic efficiency of mixing, reactions using rotor-stators will be covered.  

Liquid-liquid dispersion - Prof Rich V Calabrese 

This presentation will address emulsification and immiscible liquid dispersion in both batch and continuous operation, the kinetics of break up as well as the equilibrium drop size distribution (DSD) in laminar and turbulent flows.

Fundamental concepts will be introduced which allow quantification of break up and coalescence phenomena across various devices and relevant length scales.  The mechanistic theory will be applied to rotor-stator mixers and other high shear devices to provide correlations of practical utility. 

The role of dispersion zone hydrodynamics on ultimate drop size will be discussed. 

To consider a range of operations, emphasis will be placed on batch systems operating near equilibrium and continuous systems where the droplet phase undergoes a single pass through the mixing head.  The role played by surfactants will be considered. 

Powder dispersion and delamination in liquids - Dr Gül Özcan-Taşkın

Newly formulated products which contain nanoparticles in their formulation are finding increasing applications with a major challenge being the market introduction of these which requires large scale manufacture.

This talk will cover the incorporation of fine powders-nanoparticles-into a liquid, degglomeration of clusters of fine powders (mechanisms and kinetics of deagglomeration) and delamination of layered structures (intercalation and exfoliation), such as nanoclays and graphite. Dispersion rheology and its implications in terms of fluid flow, techniques that can be employed for monitoring these processes will also be part of the talk.

Power intensive process devices required for such processes will be mentioned with a brief mention of two example case studies relating to automotive applications. 

Population balance modelling - Prof Jerzy Baldyga

After an introduction to methods of characterising populations and statistical mechanical formulation of population balances, the interpretation of population balances multi-dimensional form of population balance equation, why and when one needs more than one internal coordinate will be elaborated.

Applications relating to solid-liquid and liquid-liquid dispersions (growth and dissolution modelling, breakage/fracture kernels, coalescence/aggregation kernels) in turbulent and laminar flows will be shown with particular emphasis on rotor-stators as the process device. 

Rich Calabrese

Richard V. Calabrese is Professor of Chemical & Biomolecular Engineering at the University of Maryland, College Park, MD USA.

Before joining Maryland in 1981, he worked for Pickard, Lowe & Garrick and Stevens Institute of Technology. He received his BS degree from the University of Rochester and his MS and PhD degrees from the University of Massachusetts.

Rich’s expertise is in turbulent mixing and multiphase flow, with emphasis on drop dispersion & coalescence, prediction & measurement of particle size distribution, and measurement & CFD simulation of velocity fields in stirred contactors. 

He is the author of more than 80 publications, has given more than 300 presentations, and is a consultant to numerous chemical and pharmaceutical companies.

He is director of the High Shear Mixing Research Program, an industrially funded consortium founded in 1997. He has been associated with BHR Group since 1991, contributing to the FMP and DOMINO industrial consortia.

Prof. Calabrese is a Fellow of the AIChE and has received the NAMF Award for Sustained Contributions to Mixing Research & Practice and was elected to Tau Beta Pi as an eminent engineer. He was Fulbright Senior Scholar and SERC Visiting Fellow at the University of Birmingham (UK), a Visiting Scientist in Particle Science & Technology at the DuPont Experimental Station, and a Technical Adviser in the Office of the Assistant Secretary for Fossil Energy at the US Department of Energy.

He has provided input to DOE and its subcontractors on design matters related to slurry transport and mixing in the Hanford (nuclear) Waste Treatment Plant since 2001. His 1986 papers on liquid-liquid dispersion, published in AIChEJ with his students, have been recognised as one of the 21 most influential contributions to mixing research.

Rich has served as Chair of AIChE’s Chemical Technology Operating Council and is a member of several national committees. He is a founding member, past Treasurer and past President of the North American Mixing Forum (NAMF), and has served as national programming chair and as the Chair of MIXING XV. Rich has contributed to NAMF’s Handbook of Industrial Mixing and has also served as a Subject Editor for Chem. Eng. Res. Des., the journal of the European Federation of Chemical Engineers.

At Maryland, Prof. Calabrese has received several teaching awards, including the College of Engineering's Outstanding Teacher Award for junior faculty, their Poole & Kent Teaching Award for senior faculty, the AIChE Student Chapter’s Outstanding Teacher Award and the Celebrating Teachers Award from the Office of Multi-Ethnic Student Education.

Jerzy Baldyga

Jerzy Bałdyga is Professor of Chemical Engineering at Warsaw University of Technology.

He obtained his MSc and PhD in Chemical Engineering in 1974 and 1981, and DSc (habilitation) in Chemical Engineering in 1989 from WUT.

In 1997, he was appointed as the Chair of Mechanical Engineering and Process Dynamics and is at present the Chair of Engineering and Dynamics of Chemical Reactors at the Faculty of Chemical Engineering, WUT. He was the Dean of Faculty from 2005 to 2012. 

Professor Baldyga has been a visiting professor in ETH Zürich and University of Saskatchewan, working with Prof. J.R. Bourne in ETH on effects of turbulent flow and turbulent mixing on the course of complex chemical reactions. The outcome of this cooperation (1983-1988) is the “engulfment model of micromixing” which is nowadays applied by many research groups and has resulted in the book by J. Bałdyga, J. R. Bourne, “Turbulent Mixing and Chemical Reactions” John Wiley & Sons, (1999) and papers, recognised in October, 2011 as one of 21 most influential contributions in mixing research in XXth and XXIst century by North American Mixing Forum (NAMF) affiliated with AIChE.

Professor Bałdyga is a Delegate of Poland to Working Party on Mixing of European Federation of Chemical Engineering and since 2012 he has been the chair of the Working Party. He is also a Member of the Executive Board of EFCE (charity trustee), Member of Committee of Chemical & Process Engineering PAN (Chairman of Mixing Section) since 2016.

Jerzy is an editor of the International Journal of Chemical Engineering and member of the editorial board of Chemical and Process Engineering, Chemical Engineering and Processing: Process Intensification and Theoretical Foundation of Chemical Technology Journal.

He acts as an expert on Scientific Panels of Polish Ministry of Science and Higher Education and Foundation for Polish Science. He was the Conference Chair of the 14th European Conference on Mixing in 2012. He promoted 16 Doctors. He cooperates with many industrial companies including BASF, Unilever, Bayer and Solvay.

The main focus of his research is the application of fluid mechanics to problems of chemical engineering and chemical reaction engineering, using mathematical models based on complex systems of differential and integral-differential equations representing mass, momentum, species, energy and population balances. His research areas are:

• effects of flow (turbulent and laminar) and mixing on the course of complex chemical reactions i.e. micromixing problem
• effects of hydrodynamics and mixing on particle size and morphology in the process of precipitation,
• drop breakup and coalescence in turbulent flow,
• shear problem in biotechnology,
• relations between secondary processes (aggregation, breakage), structure of suspension, rheology of suspension, hydrodynamics and mixing,
• liquid-liquid microreactors,
• high-shear mixers.

Dates of Event - 11^th July 2018 – 12^th July 2018

Last Booking Date for this Event - 6^th July 2018

Description

The sessions will cover multiphase mixing and dispersion processes- liquid-liquid dispersions and emulsification, powder incorporation and deagglomeration, reactive mixing- performed using energy intensive process devices. Particular emphasis will be on rotor-stators whilst references will also be made to a range of process equipment, such as stirred tanks, stirred bead mills and ultrasonicators.

The programme consists of a range of lectures giving an overview of the different processes and devices, fundamental aspects, techniques- experimental and numerical- and applications relating to energy intensive processes. The event also includes workshop sessions during which the audience will be invited to take part in discussions, share specific points of joint interest or consult the speakers. It is anticipated that there will be ample opportunities for further interactions and networking during the breaks. A brief tour of selected laboratories of the Chemical Engineering will also run in parallel to the workshop session in small groups.

The event is free for all Loughborough University students and staff.

 

Attendance fees for those outside Loughborough University:

£120+VAT

 

Students: £60+VAT

 

10% reduction will be offered to LU alumni

Register Here »