Chemical Engineering Practice

Virtualizing Your Process Control Computers

January
2012
Instrumentation
Paul Hodge
By employing the latest virtualization solutions for process control systems, chemical plants can reduce PC hardware requirements, simplify system management, and lower the total cost of ownership, as well as improve site availability, reliability,...

Prepare Your Cooling System Before Startup

July
2012
Heat Transfer
Paul R. Puckorius
Pre-startup actions such as initial water treatment and equipment coatings in cooling tower water systems can increase system life expectancy and efficiency, and reduce corrosion and fouling.

Exposing Coriolis Mass Flowmeters' Dirty Little Secrets

March
2004
Instrumentation
James R. Reizner
Coriolis technology appears to be the perfect technology. But, upon closer inspection, a key flaw is revealed - the inability to accurately and consistently measure two-phase flow and aerated liquids.

Process Simulation from the Ground Up

April
2009
Back To Basics
David Hill
Today's process simulators produce graphical, data-filled and detailed results that can improve the effectiveness of the engineers who use them.

Reliability for Safety Instrumented Systems

September
2004
Instrumentation
J. Patrick Williams
This article offers a detailed reliability-based methodology for determining the safety integrity level of instrumented systems by providing overpressure protection where arrangements of multiple pressure-relief valves are impractical to implement.

Use Exponential Functions to Correlate Temperature Dependence

July
2008
Physical Properties
Faruk Civan
Use Exponential Functions to Correlate Temperature Dependence Asymptotic exponential equations may provide a more-accurate or easier-to-use representation of a property’s temperature dependence than commonly used polynomial expressions.

Choosing Trays and Packings for Distillation

September
2009
Back To Basics
Bruce S. Holden , Mark Pilling
Tower-related problems can be difficult, time-consuming, and expensive to diagnose and fix. Here’s how to avoid difficulties and improve operating efficiency.

Legionella: An Invisible Risk

April
2008
News Feature
Cynthia F. Mascone
Ignoring this hidden hazard can put both the public and companies that operate cooling towers at risk.

Reduce Thermal Risk in Industrial Synthesis

October
2001
Safety
Richard C. Wedlich 
Knowing the safe operating conditions for a reaction allows us to select appropriate safety measures and thereby lower both the likelihood and the severity of a thermal runaway.

Designing a Process Flowsheet

May
2009
Back To Basics
Vornel Walker
Piping and instrumentation diagrams belong to a family of flowsheets that includes block flow diagrams and process flow diagrams. Technology advances have transformed these resources into intelligent documents, capable of storing layers of digital...

Selecting In-Process Particle-Size Analyzers

August
2003
Fluids and Solids Handling
Paul Barrett
To select the proper instrument for process monitoring, one must determine what attribute of the particle system impacts the process or product parameter of concern. Once the size region is identified, it can be tracked in-process, opening up the...

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.

Tracing Process Problems

April
2002
Instrumentation
John E. Hoots
In water chemistry control, fluorescent tracing technology can quickly and effectively determine and deal with the root cause of a problem.

Measuring Temperature by Direct Contact

September
2011
Back To Basics
Gary Freemer
Thermocouples and resistance temperature detectors are the most common contacting temp­erature sensors. Understand the techniques and apply them correctly to increase your temperature measurement accuracy.

Using Chromatography to Separate Complex Mixtures

December
2010
Back To Basics
Nathalie Fraud
Purifying high-value mixtures, such as pharmaceuticals, can be an expensive undertaking. Choosing the correct chromatography methods can improve purity and reduce processing time and cost.

Determine the Optimum Number of Process Trains

January
2010
Back To Basics
Gregory T. Benz
This article demonstrates that the repair and expense costs of process trains are not proportional to their capital costs and that, in most cases, building one plant with a single process train is the most economically efficient choice. <br>...

CEP: Chem Economics - Plastic Additives are Poised for Growth

July
2012
Chem Economics
T. Kevin Swift
Not all polymers are useful and/or processable in their natural form. Thus, functional chemicals are added to polymer resins to facilitate processing and to enhance, extend, or otherwise modify the properties of the plastic products manufactured from polymer resins. Such plastic additives represent a $4.6-billion business in the U.S.

Flare Minimization Via Dynamic Simulation

AIChE Spring Meeting and Global Congress on Process Safety
Mar 15, 2011
Flaring in chemical process industry (CPI) is an important method to protect equipment and personnel safety during the process upset and the chemical...

Quantitative Models for Assessing MOC Performance

Global Congress on Process Safety
Mar 13, 2011
The safety community, bolstered by the PSM regulations, has emphasized the importance of proper management of change to ensure safe, reliable and...

Unit Operations for Smart Nanomanufacturing

AIChE Annual Meeting
Nov 8, 2010
There is a chasm between promising nanotechnological advances in the laboratory and commercial manufacturing. Many techniques have been developed to...

Introduction and Objectives of the Session

AIChE Annual Meeting
Nov 8, 2010
This session will examine plant, company and industry roles in energy, sustainability, environment, EH&S and economic performance across several...

Fuel Performance Parameters for Marine Engines

AIChE Spring Meeting and Global Congress on Process Safety
Mar 23, 2010
The regulations for sulfur reduction in marine fuels are impacting the whole spectrum beginning from the production of the fuel in the refineries to...

Practical Process Control: Tuning and Troubleshooting

December, 2009
Practical Process Control (loop tuning and troubleshooting). This book differs from others on the market in several respects. First, the presentation is totally in the time domain (the word "LaPlace" is nowhere to be found). The focus of the book is actually troubleshooting, not tuning. If a...

Chemical Engineering Faculty Directory: 2009-2010

December, 2009
This faculty directory lists the contact information of all the faculty members, placement administrators, and student organizations of almost 500 worldwide universities and technical institutes offering chemical engineering curricula. This offers a comprehensive reference tool that is unique and...

Inline Mixing Device for Medical Applications

AIChE Annual Meeting
Nov 10, 2009
In 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...

A Standardized Approach to Smart Manufacturing

AIChE Annual Meeting
Nov 9, 2009
Advanced Process Control (APC) is a key element of the Smart Manufacturing paradigm, that helps drive the operation toward it's optimum point. For...
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