Modeling CO2 Removal via Hollow Fiber Modules Archived Webinar Aug 30, 2018 Are you involved in CO2 removal? Are you focused—like many engineers—on the use of solvents? There’s another method of CO2 removal using highly selective membranes.
Mixer Simulations, Modeling Nonideal Reactors and Mixers Archived Webinar Apr 4, 2018 Continuous stirred tank reactors, batch reactors, and mixers are frequently used in the consumer product, food, pharmaceutical, and fine chemical industries. Processes using these devices usually...
Modeling Packed Bed Reactors Archived Webinar Oct 19, 2017 Do you work with investigations of packed bed reactors? Are you still modeling using the traditional approach of semi-analytical approximations? Learn why and how to model in the COMSOL software. In...
Mixing and Reaction without Stirred Tanks: Part 2 Archived Webinar May 31, 2017 Are you working with mixing and reaction processes in stirred tanks? It may be time to switch to pipelines. This is the second part of a two-part webinar series. Click here to also register for Part...
Fundamentals of Laminar Mixing and Applications Archived Webinar May 17, 2017 Do you know how to characterize a mixing system for power and blend time? Determine the best geometry for required mixing conditions or product specifications? Tune into this webinar. Join this...
Mixing and Reaction without Stirred Tanks: Part 1 Archived Webinar Apr 26, 2017 Are you working with mixing and reaction processes in stirred tanks? It may be time to switch to pipelines. This is the first part of a two-part webinar series. Click here to register for Part 2...
Mixing for Success in Batch Systems Archived Webinar Dec 18, 2013 In this webinar, batch processes that require mixing are discussed and the mixing challenges and opportunities for achieving process success are described. How mixing affects the course of batch...
Mixing and Blending of Solids Archived Webinar Oct 30, 2013 This webinar provides an introduction to both the fundamentals of mixing processes and how to assess mixture quality and examine the qualities of industrial powder mixing equipment.
Pay Attention to Mixing For Successful Process Development and Scale-up Archived Webinar Oct 12, 2011 In this webinar, the fourth in the series on industrial mixing, the focus is on key steps in addressing the needs for mixing in process development, scale-up and design.
Introduction to the Pneumatic Conveying of Solids Archived Webinar Sep 8, 2010 This webinar explores the various flow modes for conveying of solids and how they are used to convey product with minimum power and product attrition.
Mixing Scale-Up: Small Mistakes Can Mean Big Success Archived Webinar Jul 14, 2010 This Webinar provides insight into some essentials of mixing scale-up. You learn that how you conduct the tests can be as important as how you analyze the results.
Identifying Mixing Problems Archived Webinar Jun 9, 2010 The webinar also covers the simplest, to the most complex, blending problems. In the simplest blending problems, there is one process objective, and one critical process specification.
Storage and Flow of Bulk Solids Archived Webinar May 12, 2010 This webinar addresses the fundamentals of the flow and storage of bulk solids, and clearly demonstrates the considerable science behind the design and use of storage vessels for solids.
Fluid Mixing: Still Needed for the Process Industries in the 21st Century Archived Webinar Feb 10, 2010 In this webinar, we introduce key concepts in fluid mixing, and discuss the range of equipment geometries that are involved.
Introduction to Solids Processing and Particle Technology Archived Webinar Jan 20, 2010 This webinar provides an overview to solids processing technology, and highlights some of the issues faced when dealing with bulk solids, including scale-down/scale-up, and effects of particle size.
Fluid Mixing Technology for Operators eLearning (online) CourseAre you ready to expand your knowledge of mixing theories and improve your performance and results? This course is for you.
Flow of Solids in Bins, Hoppers, Chutes and Feeders eLearning (online) CourseIdentify strategies for alleviating problems, improving design and optimizing flow. Learn the bulk material flow strategies you need and how to apply...
Industrial Fluid Mixing for Engineers eLearning (online) CourseThis online course covers the fundamentals of mixing and how to apply the right technology to your process.
Inherently Safety Quenching of HCN Polymerization with Phosphoric Acid Conference PresentationAIChE Spring Meeting and Global Congress on Process SafetyApril 12, 2016Hydrogen Cyanide (HCN) product is stored in tanks at many production facilities. It is capable of self-reaction that could end in explosive...
Characterization of Lab and Plant Reactors Using Fast Competitive Reactions and a Predictive Model Conference PresentationAIChE Annual MeetingNovember 12, 2015Scale-up of reaction and crystallization conditions often involves assumptions about equivalence of mixing between lab and plant. Scale-down of...
The Confined Impeller Stirred Tank (CIST): A New Mixing Device Designed to Properly Scale-Down Local Mixing Effects in Industrial Applications Conference PresentationAIChE Annual MeetingNovember 12, 2015The confined impeller stirred tank (CIST): a new mixing device designed to properly scale-down local mixing effects in industrial applications Marcio...
An Investigation of Mixing Performance of a Continuous Powder Mixing Process Conference PresentationAIChE Annual MeetingNovember 11, 2015Continuous manufacture of drug products is receiving increased attention both from academics and industry in recent years. Pfizer’s approach to...
Simulation of Gas-Solid Flow in a Modified Internally Circulating Fluidized Bed By Using a Multi-Scale CFD Approach Conference PresentationAIChE Spring Meeting and Global Congress on Process SafetyApril 28, 2015Particle flow and mixing affect considerably the performance of a gas-solid fluidized bed. In particular, the regeneration of a fluid catalytic...
The Gas-Solid Two-Phase Flow and Mixing in a FCC Riser with Different Feedstock Injection Schemes Conference PresentationAIChE Spring Meeting and Global Congress on Process SafetyApril 28, 2015Feedstock injection zone is a key section for fluid catalytic cracking (FCC) riser reactor. The mixing between oils and catalysts in this zone...
Applying PAT for Pharmaceutical Powder Blending Process: Challenges and Opportunities Conference PresentationAIChE Annual MeetingNovember 19, 2014Pharmaceutical powder blending presents challenges for high risk category products such as highly potent drugs, low dose drugs, drugs with narrow...
Imparting Ionic Liquid Character to Commodity Chemicals Conference PresentationAIChE Annual MeetingNovember 18, 2014We have observed that certain bulky salts that are commonly used to synthesize ionic liquids are also highly soluble in a number of polar organic...
Comparative Techno-Economic Analysis of a Softwood Ethanol Process Featuring Post-Hydrolysis Sugars Concentration Operations and Continuous Fermentation with Cell Recycle Conference PresentationAIChE Annual MeetingNovember 18, 2014Many softwood fermentation processes are constrained by low sugars and high inhibitor concentrations in the hydrolysate. Low sugars concentrations...
Nanoparticle Stabilized High Internal Phase CO2-in-Water Foams: Effects of Surfactants and Polymers Conference PresentationAIChE Annual MeetingNovember 17, 2014Chemical formulations of nanoparticles and surfactants are developed to stabilize high internal phase carbon dioxide-in-water (C/W) foams for low...
Enhancing polymerization reactor performance through better micro-mixing - a modeling study using PDF methods Conference PresentationSouthwest Process Technology ConferenceOctober 9, 2014Micro-mixing plays a dominant role in determining the performance of polymerization reactors. The present talk will present a modeling framework for...
Use Modeling to Evaluate Processing Solutions for Heavy Oils Conference PresentationAIChE Spring Meeting and Global Congress on Process SafetyApril 2, 2014The world’s energy industry has followed the availability of easily attainable and economically feasible supplies for the oil segment that has moved...
Reactivity of Biopolymers in Ionic Liquids Conference PresentationAIChE Annual MeetingNovember 6, 2013Ionic liquids are gaining increasing acceptance as novel solvents for chemical transformations. This has included a recent focus on the use of ionic...
Large Eddy Simulation - Based Mixing Tee Analysis and Comparison with in-Service Failure Data Conference PresentationAIChE Spring Meeting and Global Congress on Process SafetyMay 1, 2013The mixing process of hot and cold fluids in a tee junction is chaotic (turbulent) in nature and can result in high cycle thermal fatigue of the...
Application of the Discrete Element Method (DEM) to Understand a Powder Blending Process and De-Risk Scale-up Conference PresentationAIChE Annual MeetingOctober 30, 2012Scale-up of batch manufacturing operations in the pharmaceutical industry often presents technical challenges and various risks. In this work, a case...
Agitation of Microbial Cultures Via Low-Frequency Acoustic Energy for Improved Oxygen Transfer Conference PresentationAIChE Annual MeetingNovember 10, 2009Conventional biological orbital shakers have substantial drawbacks that include low volumetric capacities, limited oxygen transfer capability and...
Inline Mixing Device for Medical Applications Conference PresentationAIChE Annual MeetingNovember 10, 2009In the surgical field, the mixing of two combined fluid streams is required to form fibrin glue, used as a tissue sealant or a hemostat. The sealant...
Mixing Scale-Down Studies for the Scale-Up of Beer Fermentation Conference PresentationAIChE Annual MeetingNovember 10, 2009Beer fermentations have traditionally been undertaken without the use of mechanical agitation with mixing being provided only by the CO2 evolved...
Experimental Investigation of Mixing Time in a Stirred, Torispherical-Bottomed Tank Equipped with a Retreat-Blade Impeller Conference PresentationAIChE Annual MeetingNovember 9, 2009Glass-lined reactors are typically used in the pharmaceutical and specialty chemicals industries because of their material compatibility with most...
Aerobic Fermenter Scale-up: Why Equal Mass Transfer Scale-up Doesn't Always Work Conference PresentationAIChE Annual MeetingNovember 9, 2009Transferring oxygen to the liquid is only one of several steps that must occur in an aerobic fermentation. After the oxygen is transferred to the...
Direct Conversion of Mixed Oxygenates to Isobutene over ZnxZryOz Mixed Oxides Conference PresentationAIChE Spring Meeting and Global Congress on Process SafetyApril 27, 2015Direct conversion of ethanol to isobutene has recently been reported over ZnxZryOz mixed oxide catalysts with balanced acid-base sites [1]. A complex...
Fluid Mixing Technology, Part 2 May 3, 2017Learn the basics of choosing an appropriate impeller for blending fluids in a stirred tank.
Fluid Mixing Technology, Part 1 March 9, 2017 Gain an overview of basic design principles for blending fluids in a stirred tank.
AIChE Journal Highlight: Microreaction Technology Comes of Age March2017Journal HighlightMicroreaction technology has matured over the past two decades, from simple devices and concepts to diverse commercial equipment and applications. This evolution has occurred in parallel with process intensification efforts aimed at using...
July 2015 CEP Preview July 6, 2015In this issue, get tips for selecting sensors for your plant's safety instrumented system (SIS), a guide to mixing, some of the latest development in biological engineering, and much more.
June 2015 CEP Preview June 16, 2015Chemical engineers continue to earn more than the average U.S. worker. The median salary of survey respondents is $127,000 — a 5.8% increase over the median reported in 2013.
Designing Multistage Agitated Reactors January2014Reactions and SeparationsGregory BenzThis article bridges the gap between theory and practice for the design of continuous-flow mechanically agitated reactors, with a focus on mechanical and hydraulic issues.
Comparison of Traditional Rushton Disc Turbines with up-Pumping Hydrofoil B2 Impellers in 550 L Pilot Scale Aerobic Submerged Fermentations Conference PresentationAIChE Annual MeetingNovember 10, 2009There has long been a debate concerning the most suitable impeller for aerobic submerged fermentation (and indeed, for gas liquid or 3-phase reactors...
Computational Fluid Dynamics Simulation of a Quadupole Magnetic Sorter Flow Channel Conference PresentationAIChE Annual MeetingNovember 9, 2009Isolation of the pancreatic islets is the important step in preparing islets for the transplantation in type 1 diabetes patients. Quadrupole magnetic...
Recognizing the 21 Most Influential Contributions to Mixing Research January2014Reactions and SeparationsRichard Calabrese, Dr. Suzanne Kresta, Minye LiuHere is a look at the key milestones in the field of mixing, and how these foundational developments paved the way for current industrial practice.
Select the Right Impeller June2015Back To BasicsJulian FasanoThe key to effective, efficient mixing is selecting the appropriate impeller.
Tackling Difficult Mixing Problems August2015Fluids and Solids HandlingDr. David S. DickeySome difficult mixing problems cannot be solved, but their impacts can be lessened. Here’s how you can deal with difficult processes or products, misunderstandings about good mixing, and obstacles to improvements.
Determining Torque Split for Multiple Impellers in Slurry Mixing February2012Fluids and Solids HandlingGregory T. Benz, P.E.Yield-stress slurries, such as those used in paper, biofuel, and polymer production, can be difficult to mix. This article explains how to determine torque requirements for multiple-impeller slurry-mixing systems to optimize tank geometry and...
Designing Suspension-Mixing Systems January2006Fluids and Solids HandlingPavel Ditl, Frantisek RiegerImpeller and vessel geometries are key factors in selecting mixing equipment to efficiently suspend particulate solids in slurries
High-Shear Mixers: Still Widely Misunderstood November2007News FeatureSuzanne ShelleyAdvanced modeling techniques and improved geometric features are helping designers and users of rotor-stator mixers to demystify these complex devices, and get more consistent predictable results.
Agitating Fibrous Materials June2010Back To BasicsGregory T. BenzSlurry agitation involves complicated processes. This article presents guidelines for understanding the rheology of cellulosic and other fibrous materials, and outlines a method for scaling up their agitation.
AIChE Equipment Testing Procedure - Mixing Equipment (Impeller Type), 3rd Edition May, 2001The latest edition of this industry-friendly guide to evaluating the performance of mixing equipment brings this traditional process operation into the 21st century. The book starts with basic definitions and terms, and goes to detail test planning and procedures, and computation and evaluation of...
Understand Temperature Change in Process Stream Mixing September2006Heat TransferAnil K. Mehrotra, Dharmendra TiwaryThe isobaric and adiabatic mixing of process streams can yield an outlet stream temperature that is either in between, higher than, or lower than the inlet stream temperatures. This article uses simulation to explore temperature-change scenarios in...
Find Mixing Success through Failures - Part 1 October2008Fluids and Solids HandlingDavid S. Dickey, Gary K. PattersonUnderstanding when and why mixing fails in the laboratory is often the only way of avoiding a similar failure in a production-scale reactor.
Find Mixing Success Through Failures - Part 2 December2008Fluids and Solids HandlingDavid S. Dickey, Gary K. PattersonUnderstanding when and why mixing fails in the laboratory is often the only way of avoiding a similar failure in a production-scale reactor. Here we examine mixing in stirred-tank reactors and provide guidance on scale-up.
Optimize Mixing by Selecting the Proper Baffles February2002Fluids and Solids HandlingJulian B. Fasano, Kevin J. Myers, Mark F. ReederIt is common knowledge that baffles promote better flow in an agitated vessel, but how to apply them and what kind to use take some ingenuity.
Understand the Real World of Mixing March2010Back To BasicsThomas PostMost chemical engineering curricula do not adequately address mixing as it is commonly practiced in the chemical process industries. This article attempts to fill in the gaps by explaining flow patterns, mixing techniques, and the turbulent,...
Advanced Cubic Equations of State: When and How to Use Them November2002InstrumentationChorng H. Twu, Vince Tassone, Wayne SimUnderstanding the strengths and limitations of a cubic equation of state (CEOS) is crucial for selecting the right one for your flowsheet simulation.
How to Scale-Up Mixing Processes in Non-Newtonian Fluids May2003Fluids and Solids HandlingChristopher Henry , Robert J. Wilkens, Lew E. GatesThis article will describe the relationships that must be understood to scale-up fluid mixing processes in non-Newtonian, power-law fluids. The principles described apply to both close-clearance impellers, such as anchors and helixes, and to open...