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ChemE On Demand

AIChE's ChemE on Demand is a multi-media digital library containing hundreds on-demand webinars and recorded conference presentations. This convenient resource is designed to meet your needs as a chemical engineer. AIChE professional members are entitled to 6 FREE 'credits', good for content in ChemE on Demand each year. Undergraduate student members get free unlimited access to ALL ChemE On Demand content.

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The Nuclear Fuel Cycle in the U.S.: What Are the Options?

AIChE Webinar
Sep 11, 2013
Candido Pereira, Christopher Phillips
Chris Phillips describes both reprocessing and long term storage as complementary ways of dealing with the used nuclear fuel (UNF) from the US's nuclear reactors. Candido Pereira provides an overview of the nuclear fuel cycle and possible future directions for sustainable nuclear power production with an emphasis on chemical processing and recycle.

Atmospheric Impacts of Expanded Natural Gas Use

AIChE Webinar
Aug 21, 2013
David Allen
This presentation focuses on air quality impacts associated with hydraulic fracturing. Data and modeling on emissions and impacts of photochemically active air pollutants, toxic air pollutants and greenhouse gas emissions are described.
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Stable Facilitated Transport Membrane For Olefin/Paraffin Separation

May 2, 2013
Ali Hamza, Glenn Towe, Majid Keyvani
Currently, the separation of olefins (ethylene, propylene) from paraffins (ethane, propane) on a commercial scale is accomplished almost exclusively by cryogenic distillation in petrochemical industries and is considered highly energy intensive. Consequently, there is an enormous economic incentive...

Linking SPYRO Rigorous Stream Cracking Model

May 2, 2013
Marat Akhmedov, Marco W.M. Van Goethem, Ronald Goris, Satomi Yamaya
Furnace simulations are currently used in all layers of process control from planning and scheduling down to the APC layer. However in the DCS regression models are still present for process optimization. Typically the purpose of these regressions is to predict the severity on a continuous basis to...

Process Control in Ethylene Plants: A Historical Perspective

May 2, 2013
Eddy Fontenot, Peter Le, Sanjay Sharma, Satish Baliga
Process control has been the cornerstone of automation technology in ethylene plants for the past several decades. Stiff global competition combined with intermittent periods of uncertain market growth has forced the industry to re-evaluate business models and to continuously search for innovative...

CSB Investigation of Chevron Richmond Refinery Fire

May 1, 2013
Amanda Johnson, Dan Tillema, Donald Holmstrom, Kelly Wilson, Lauren Grim, Mark Wingard, Roger Evans, Steve Cutchen
On August 6, 2012 a hydrocarbon fire occurred at approximately 6:30 p.m. in the crude unit of the Chevron Richmond Refinery in Richmond, California. Approximately 20 workers were present when an 8" line ruptured and engulfed the employees in a vapor cloud. Five employees suffered minor injuries and...

Retrofitting Burner Management Systems At Existing Furnaces

May 1, 2013
Johan vanderEijk, Menno van der Bij
Retrofitting Burner Management Systems at Existing Furnaces This paper presents a pragmatic approach for how to retrofit and safely operate the firing system for an existing cracking furnace. With respect to safety, the firing system needs to work inside a defined operating window. This has to be...

Case Studies in Process Safety: Lessons Learned From Software-Related Accidents

May 1, 2013
Terry Hardy
Abstract Software often plays a significant role in the safety of complex systems such as those used in the chemical processing and energy production industries. Because computing systems are increasingly being used to control critical functions, software may directly contribute to an accident...

Effect of Process Conditions On Film Temperature in Fired Heaters

May 1, 2013
Arturo Morales-Fuentes, Martn Picn-Nez
Variation in process conditions in fired heaters arise due to multiple circumstances, of these, percentage of excess air, throughput and inlet temperature are the most recurrent. Film temperature is an important parameter to be observed during the operation of this type of equipment due to its...

Clean and "Dirty" Tar Reforming of Biomass Gasification Gas

May 1, 2013
Klas J. Andersson, Poul Erik Hjlund Nielsen
A prerequisite for the establishment of an efficient biomass-to-chemicals production or CHP applications utilizing engines is a good thermodynamic utilization of the hot synthesis gas exiting a biomass gasifier. A second and important criteria is the extraction or conversion of tars (polyaromatic...

The Mitigation Conundrum: When Reducing One Hazard May Increase Another

May 1, 2013
Filippo Gavelli, Scott G. Davis
Siting regulations for onshore LNG facilities in the United States require the consequences of credible accidental scenarios to be confined within the facility’s boundaries – that is, no harm should occur to the public or public property from the worst credible events. Compliance with regulations...

Calcium Stearate Deflagrations A Series of Unfortunate Events

May 1, 2013
Albert I. Ness, Konanur Manjunath
A series of deflagrations occurred in a plant unloading Calcium Stearate from bulk bags. Each one had a different root cause and illustrates the importance of management systems for ignition control and the need to evaluate a system for many types of ignition sources. The first event was caused by...

Furnace Burner Management Practices within Nova Canada

May 1, 2013
Murray DeBoer
Furnace Burner Management Practices within Nova Canada The focus of this paper will be on the cracking heaters at the NOVA Chemicals Corunna site, located near Sarnia, Ontario, where a major site revamp drove the replacement of the cracking heater burners and as a result, required the heater BMS to...

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