Chemical Engineering Practice

Piloting Bioreactors for Agitation Scale-Up

February
2008
Reactions and Separations
Gregory T. Benz
This article offers guidance on how to design appropriate experiments to measure scalable data for agitation in both aerobic and anaerobic bioreactors.

Choose the Right Gas Sensor

September
2009
Instrumentation
Sandra Barnes
Selecting a sensor for continuous monitoring involves many considerations. This article discusses the types of sensors available, their applicability and limitations, and how to choose an appropriate sensor to protect people and equipment.

CEP: Process Automation Corner - Process Simulation and Process Control

September
2013
Process Automation Corner
Terry McMahon
Chemical engineers have been practicing process simulation since the advent of the profession in the early 20th century. It was called process design and inevitably involved simplifying assumptions, including that steady-state process conditions had...

Determining Discharge Rates of Particulate Solids

May
2016
Fluids and Solids Handling
Shrikant Dhodapkar, Karl V. Jacob, Madhusudhan Kodam
Many factors affect the flowrate of bulk solids. This article reviews the underlying physics of solids flow and explains how to calculate the discharge rate of solids from processing and handling equipment.

Nanosensors: Evolution, Not Revolution...Yet

June
2008
News Feature
Suzanne A. Shelley
Promising nanotechnology-enabled sensors, monitoring devices and analytical instruments continue to advance toward commercialization for diverse industrial, environmental, medical and military applications— but hurdles remain.

Modeling Reactive Absorption

January
2009
Reactions and Separations
Eugeny Kenig, Panos Seferlis
Effective modeling of reactive absorption enhances system design, improves experiment planning for parameter-estimation, and facilitates process operation and control decisions.

SBE Special Section: Biopharmaceuticals - Continuous Processing in Upstream Operations

December
2015
SBE Special Section
Chun Chen, Chetan T. Goudar, Huong Le
Perfusion technology offers many benefits over fed-batch processing, such as reducing the size of the bioreactor, which reduces capital costs and enables the use of single-use bioreactor technology. Despite these advantages, a shift to continuous perfusion will likely be gradual.

Introduction to Fluidization

November
2014
Back To Basics
Raymond Cocco, S. B. Reddy Karri, Ted Knowlton
Fluidized beds offer excellent heat transfer, and have the unique ability to move a wide range of solid particles in a fluid-like fashion. This article explains the basics of fluidization theory and outlines how to design a typical fluidized bed.

Understand the Basics of Membrane Filtration

April
2013
Back To Basics
Hua Wang, Hongyi Zhou
Membrane filtration is an integral part of many industrial processes, as it is often more environmentally sustainable and cost-effective than other separation technologies

Big Data Analytics: Meet the Authors

March
2016
Special Section
Richard D. Braatz / Leo H. Chiang / Lloyd F. Colegrove / Salvador GarcÍa Muñoz / Chaitanya Khare / John F. MacGregor / Marco S. Reis / Mary Beth Seasholtz / David White

Patent Update: Can a Patent Be Infringed Before It Issues?

June
2016
Patent Update
Henry Heines
How long does a U.S. utility patent remain in force? If asked this question, many might say 20 years. This is not correct, however. The term of a patent is the period of time extending from the issue date of the patent to 20 years from the date on...

Fundamentals of Agglomeration

Archived Webinar
May 18, 2016
Refresh your knowledge of the basic principles of agglomeration and why and how to incorporate them into your production. This 60-minute webinar...

Prevent Caking of Bulk Solids

April
2016
Fluids and Solids Handling
Greg Mehos, P.E.
Understanding the mechanisms behind caking, identifying key process variables and product specifications, and testing samples to predict the increase in cohesive strength of a powder over time are key to preventing and solving caking problems.

2019 AIChE Annual Meeting

November 10-15, 2019
The AIChE Annual Meeting is the premier educational forum for chemical engineers interested in innovation and professional growth. Academic and industry experts will cover wide range of topics relevant to cutting-edge research, new technologies, and emerging growth areas in chemical engineering.

2018 AIChE Annual Meeting

October 28 - November 2, 2018
The AIChE Annual Meeting is the premier educational forum for chemical engineers interested in innovation and professional growth. Academic and industry experts will cover wide range of topics relevant to cutting-edge research, new technologies, and emerging growth areas in chemical engineering.

Fugacity Demystified

Archived Webinar
Mar 2, 2016
Trying to understand fugacity, but feeling uncertain? Clear up your confusion in just one hour. This webinar provides a concise review of fugacity...

Hybrid Cell Culture Models for Efficient Process Development

Conference Presentation
AIChE Annual Meeting
Thursday, November 12, 2015 - 3:15pm-5:45pm
Cell culture processes are dynamic systems governed by a large number of influential and highly interacting process variables. Despite the stringent...

Dynamic Modeling and Advanced Control of Tablet Press

Conference Presentation
AIChE Annual Meeting
Thursday, November 12, 2015 - 12:30pm-3:00pm
The tablet press is one of the most critical but least understood unit operation involved in both batch and continuous tablet manufacturing process...

Hydrolysis of Ddg

Conference Presentation
AIChE Annual Meeting
Wednesday, November 11, 2015 - 12:30pm-3:00pm
Liquid hot water (LHW) extraction was used as a pretreatment method to separate the hemicellulose fraction from dried distiller’s grain with solubles...

Optimizing LNG Production Via Boil Off Gas System Design

Conference Presentation
AIChE Annual Meeting
Wednesday, November 11, 2015 - 12:30pm-3:00pm
Optimizing LNG Production via Boil Off Gas System Design John Ergina – Technical Professional – Process, KBR Sumit Sharma – Senior Technical...

Hydrolysis Kinetics of Woody Biomass: Surface Renewal

Conference Presentation
AIChE Annual Meeting
Wednesday, November 11, 2015 - 8:30am-11:00am
Woody biomass is known to be composed of three major components: cellulose, lignin and hemicellulose. Cellulose is the most stable natural polymer in...

Democratizing Fossil Fuel Conversion

Conference Presentation
AIChE Annual Meeting
Tuesday, November 10, 2015 - 12:30pm-3:00pm
Do you have a billion dollars? Neither do most of the 6 million companies in the Unites States. In fact, less than 10 companies in the U.S. can...

The Travelling Fluidized Bed Project: Working Together

Conference Presentation
AIChE Annual Meeting
Tuesday, November 10, 2015 - 8:30am-11:00am
John Chen had a strong attachment to “challenge problems” to evaluate the ability of models and CFD codes to accurately predict complex fluidization...

Alternative Sampling Densities in Non-Uniform Sampling

Conference Presentation
AIChE Annual Meeting
Monday, November 9, 2015 - 3:15pm-5:45pm
Non-uniform sampling (NUS) is more widely practiced, but many implementations either do not weight the distribution of samples, or follow exponential...

Room Temperature Shape Memory Polymers

Conference Presentation
AIChE Annual Meeting
Monday, November 9, 2015 - 8:30am-11:00am
Temperature controlled shape memory polymers can be synthesized via a facile method using long chain fatty acid and cross-linked natural rubber. For...

Water Desalination By Shock Electrodialysis

Conference Presentation
AIChE Annual Meeting
Monday, November 9, 2015 - 8:30am-11:00am
The development of cost and energy efficient water purification systems, specifically desalination systems, is one of the most critical engineering...

Phase Equilibria Concepts

Archived Webinar
Oct 7, 2015
Phase equilibria usually determines what type of separation process will be economical. Modeling of phase equilibria relies upon mathematical...

European Efforts in Process Intensification

Archived Webinar
Aug 19, 2015
European Union (EU) efforts to develop Process Intensification (PI) for the chemical industry have been more focused and organized than US efforts...

The Dow Chemical Story

Archived Webinar
Jun 25, 2015
Dow Chemical was founded in 1897 by Herbert Henry Dow. Learn about the history of this chemical giant as it grows and merges into the top company it...

Energy and Entropy, Concepts and Balances

Archived Webinar
May 20, 2015
Energy and entropy balances are central to process thermodynamics calculations. This presentation reviews the principles for each balance. Examples...

Process Spray Applications and Spray Science

Archived Webinar
May 13, 2015
This presentation is about achieving improved spray performance by better integrating the operational requirements, key fluid properties, and spray...

Flare Regulatory Trends and Impact on Ethylene Manufacture

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Thursday, April 30, 2015 - 8:30am-9:00am
Global attention on improving oil and gas, refinery, petrochemical, and related industrial flaring practices continues its forward advance intimately...

Impact of Control Valve Performance on Control Performance

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Wednesday, April 29, 2015 - 2:45pm-3:00pm
A significant amount of time is often spent specifying and selecting the proper control valve for the application. However, this effort is generally...

Regulators Versus Control Valves: What's the Best Fit?

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Wednesday, April 29, 2015 - 1:30pm-2:15pm
This session will review the selection criteria for consideration of pressure regulators vs. control valves for uses on various applications to...

Mitigating Variable TDS Levels in Wastewater Biotreatment

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Wednesday, April 29, 2015 - 10:45am-11:15am
Wastewaters characterized by elevated Total Dissolved Solids (TDS) levels and high organic content are produced by food, petroleum, and petrochemical...

Recent Trends in the Removal of Sulfate through Precipitation

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Wednesday, April 29, 2015 - 10:15am-10:45am
Removal of Sulfate through Precipitation Many mines have very high sulfate concentrations in their waste water due to the sulfides in the ore...

Analysis of the Capabilities of Cybersecurity Defenses

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Wednesday, April 29, 2015 - 9:30am-10:00am
The threats to our critical infrastructure continue to evolve. As new cyberattacks are created and discovered, it is incumbent upon us to evaluate...

Robotic Convection Bank Cleaning

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Tuesday, April 28, 2015 - 2:45pm-3:15pm
Ethylene cracking heaters like other box fired heaters in the refining and petrochemical industry represent a significant investment in a plant...

Refiners Meet the Challenges in a Changing Environment

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Tuesday, April 28, 2015 - 2:30pm-3:00pm
Tom Hogan, Senior Vice President of Turner, Mason & Co., will discuss the refinery responses to a rapidly changing environment. Expanding...

Tier 3 Vehicle Emissions and Fuel Standards Compliance

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
Tuesday, April 28, 2015 - 1:30pm-2:00pm
Tier 3 Vehicle Emissions and Fuel Standards Compliance - A Sustainability Perspective Jacqueline Sibblies, PE Environmental Compliance Consulting P.O...

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