April 2012 | AIChE

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April 2012

Belma Demirel

Belma Demirel recently joined Praxair which supplies atmospheric, process and specialty gases, high-performance coatings, and related services and technologies. Prior to Praxair, she worked at Rentech, Inc. for about 11 years.  She, as a manager of Catalyst Development, led the catalyst development, testing and scale-up efforts for Fischer-Tropsch synthesis to convert carbonaceous materials to valuable fuels and chemicals.

Before joining Rentech, Inc. in 2000, she worked at Eltron Research, Inc. between 1999 and 2000 as a senior chemical engineer. Her responsibilities at Eltron...Read more

Modeling of LNG Spills Into Trenches and Troughs

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 5, 2012
Trenches and troughs are commonly used in LNG storage and transfer facilities to contain potential LNG spills. The trenches are concrete-lined...

Assuring Ethylene Purity: Reliable Sub-Ppm Measurement of Ammonia and Water with Online TDL Analyzers

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 5, 2012
Accompanying the ever-increasing performance of polymerization catalysts used to produce polyethylene (PE) is a general increase in catalyst...

CFD Simulation of the Falcon Tests Using the Homogeneous Equilibrium Model in FLACS

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 5, 2012
The CFD model FLACS was recently validated [1] against the 33 experimental data sets included in the Model Evaluation Database [2], which was...

Furnace Stories

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 5, 2012
The cracking furnace is the heart of the ethylene plant, consuming the most energy, adding the most value and with the potential to cause the most...

Emissivity of Cracking Furnace Coils, Novel Temperature Measurement Solutions for Cracking Furnaces

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 5, 2012
Accurate measurements of skin temperature on cracking furnace coils have become necessary for improved process control. Infrared devices have proven...

Designing LNG Vapor Dispersion Exclusion Zones to Protect the Public

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 5, 2012
The LNG industry, if not the entire energy industry, may be at a crossroad. Expectation of large shale gas supplies in the United States, with a...

Evaluation of Key Parameters for Designing Effective Water Curtain Systems for LNG Facilities Using Computational Fluid Dynamics

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 5, 2012
Concerns over public safety and security of an accidental LNG spill have motivated the continued study of LNG mitigation measures. Forced dispersion...

Galvanic Corrosion Between Dissimilar Metals

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 5, 2012
A Dow USGC cracker suffered a tube failure on a cracked gas compressor inner stage cooler after ten plus years of service. To further extend the...

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