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Conference Presentations - 2011 AIChE Spring Meeting and Global Congress on Process Safety

Inferential Monitoring & Optimization of Crude Units Via Hybrid Models

Mar 15, 2011
Vladimir Mahalec
Refinery crude units often process variety of feedstocks. If properties of the feed entering the crude unit are not precisely known, it is difficult to predict how changes in the tower operating conditions will affect properties of the products. Similarly, if on-line analyzers are not available, it...

Ethylene Boil-off Compressor Process Safety Incident

Mar 15, 2011
Niara Eckhard Uhlein
Braskem, a Brazilian player among petrochemical manufacturers, produces monomers, resins and chemicals specialties. The overall Ethylene capacity is 3,600 KTA, distributed in six Olefins plants. Naphtha is the main raw material of the petrochemical and plastic productive chain in Brazil, followed...

Operational Inputs Into the Mechanical Integrity Program

Mar 15, 2011
F. Russ Davis
A predictive mechanical integrity (MI) program is based on the following: * Damage mechanisms that affect process equipment. * Rate at which degradation progresses. * Ability of the inspection group to identify and correct equipment damage before equipment failure. Operational temperature, pressure...

Effect of the Characteristic Dimension of Catalytic Wall Microchannels and Microslits on the Performance of Microreactors Coupling the Methane Steam Reforming and Combustion Reactions: A CFD Simulation Study

Mar 15, 2011
Luis M. Gandia
Effect of the Characteristic Dimension of Catalytic Wall Microchannels and Microslits on the Performance of Microreactors Coupling the Methane Steam Reforming and Combustion Reactions: A CFD Simulation Study G. Arzamendi 1 , I. Uriz 1 , P.M. Diéguez 1 , M. Montes 2 , M.A. Centeno 2 , J.A. Odriozola...

Scoping Study of Methanol Production From CO2 with Nuclear Electrolysis H2

Mar 15, 2011
Richard D. Doctor
A scoping study of system costs for producing methanol from CO 2 and H 2 using low-carbon electricity to supply the hydrogen from commercial electrolysis produced methanol via: CO 2 + 3H 2 ➝ CH 3 OH + H 2 O Assuming low-carbon electricity at $75/MW, electrolysis delivers hydrogen at $5/kg and the...

Exploitation of Low-Grade Heat In Site Utility Systems

Mar 14, 2011
Ankur Kapil
The site utility system provides the heating, cooling load along with power production for the processes on the total site. Low-grade heat is available in large amount across the process industry from temperatures of 30 o C to 250 o C as gases (e.g. flue gas) and/or liquids (e.g. cooling water)...

Secondary Effects of Reducing Carbon Dioxide Emissions

Mar 14, 2011
Eloy Flores III
Secondary Effects of Reducing Carbon Dioxide Emissions While climate change has lost some interest to the global economy, the United States and the World continue to move forward on advancing research and technologies to capture, sequester, or reuse the green house gas carbon dioxide. Capturing...

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