Chemical Engineering Practice

Fischer-Tropsch Synthesis: Where We Are and Where We May GO

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 27, 2015
The Germans followed a simple plan when they scaled up the Fischer-Tropsch (FT) synthesis to the commercial level. For the reactor, they set a simple...

Demonstrating Separation and Independence of Automated Systems

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 27, 2015
Layers of Protection Analysis (LOPA) exposes the role that automation plays in causing initiating events and in responding to the resulting abnormal...

Kraft Lignin Depolymerization Under Hydrothermal Conditions

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 27, 2015
Kraft lignin depolymerization was conducted in water and mixture of water and alcohols with different ratios. The highest lignin conversion yields...

A Tutorial on Model Based Loop Tuning

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 27, 2015
This presentation provides a tutorial on tuning PID process controllers using the Lambda process model based tuning methodology. This tuning...

The Four Pillars of Industrial Energy Efficiency

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 27, 2015
Opportunities to improve plant performance and thus enhance energy efficiency across the CPI fall into four main categories: operational improvements...

Integrated LNG and NGL Production

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 27, 2015
Cryogenic NGL extraction plants from natural gas offer an attractive opportunity for LNG production as a side stream. Cold gas is tapped from the...

Steam Load Shedding System Design Using Dynamic Simulation

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 27, 2015
In a refinery, steam utility is one of the most important utilities, which can be used at different temperature ranges. Proper handling of the...

Brayton Refrigeration Cycle for Small Scale LNG Plants

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 27, 2015
Liquefying natural gas is an industrial process of great importance with the current worldwide production capacity of about 300 million tonnes per...

Challenge of Mitsubishi Chemical's Process Safety

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 27, 2015
Mitsubishi Chemical has been working to improve process safety by implementing safety review (SR) activities.The aim of the SR activity is to improve...

On the Use of Laminar Burning Velocities in Process Safety

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 27, 2015
This study explores the role of the premixed laminar burning velocity as a global parameter to evaluate the explosion hazard of flammable gases and...

Can I Use My Cooling Water Header As a Relief Device?

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 27, 2015
According to current industry practice, a heat exchanger tube rupture scenario is considered when the design pressure or maximum possible system...

Refrigeration Compressor Recycle Quench Control

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 27, 2015
Many olefins plant refrigeration compressors use a spray quench of liquid refrigerant to cool the hot recycle gas stream. Typically, the recycle flow...

Reliability: The Next Revolution in Process Manufacturing

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 27, 2015
David Rosenthal, PE, CMRP is a Reliability Consultant representing his Reliability Strategy and Implementation Consultancy LLC firm. He previously...

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...

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...

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...

Design Considerations for Diesel Hydrotreaters

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 4, 2012
In 2006, the United States EPA mandated the use of 15 ppmw ultra-low sulfur diesel (ULSD) for on-road diesel fuel. At that time several refiners...

Dynamic Simulation: Value During LNG Process Design and Beyond

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 4, 2012
A contributor to complex/large project management difficulty is uncertainty gaps – gaps between the information required and that readily available...

Panel Discussion on Turnaround Excellence

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 4, 2012
A panel of industry experts will discuss topics of interest to Ethylene Producers with respect to turnaround excellence. Topics will be solicited...

Hydrotreating of Biooils to Jet Fuels: An Overview

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 4, 2012
This paper will give an overview of the current status of jet fuels production from hydrotreating of biooils, including vegetable oils and microalgae...

Analysis of Turnarounds in Olefin Plants: A 16-Year View

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 4, 2012
Comparative Performance Analysis™ (CPA™) benchmarking studies of the olefin industry have been conducted by HSB Solomon Associates LLC (Solomon)...

Design Challenges in Tankage Modernization

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 4, 2012
In order to comply with regulation requirements, a refinery needs to perform major revamps to produce different grades of Diesel, namely ULSD, Off-...

Hydroprocessing Design - Tutorial

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 4, 2012
Hydroprocessing or hydrotreating is the key technology to clean, to refine, and to convert crude oils into valuable products, such as gasoline and...

History of NOx In the Ethylene Industry

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 4, 2012
A history of NOx in the Ethylene Industry will be presented.

Capital Cost Targeting of Total Site Heat Recovery

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 4, 2012
Heat recovery on Total Site level can provide a considerably high potential for energy saving. It offers additional degrees of freedom for heat...

Appropriate Placement of Compressors and Expanders

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 4, 2012
The term “Appropriate Placement” was introduced in Pinch Analysis during the 1980s to indicate how special unit operations should be correctly...

Strategic Chemistry

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 4, 2012
Optimizing the clearing and cleaning of process units during turnarounds. Primary discussion involves the three key areas related to an effective,...

Evaluation of Dispersion Models for LNG Siting Applications

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 4, 2012
The federal safety standards for LNG facilities under 49 CFR Part 193 approves the use of specific dispersion models for performing vapor-gas...

Simple Opportunities for Improving Energy Efficiency

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 4, 2012
Energy efficiency has become an important theme in the process industries, and many companies have implemented sophisticated strategies to improve...

Hydrocarbons Turnarounds EHS Readiness

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 4, 2012
The Dow Hydrocarbons Business has a thorough process for managing excellent EHS performance during Turnarounds. We name an EHS Focal Point for each...

Turnaround Excellence - Key Success Factors

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 4, 2012
Turnaround Excellence is more than a state of being… it is a journey. Achieving and sustaining excellence is wholly dependent on a site approach of...

Modeling of Ground Flare Pits

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 4, 2012
New LNG liquefaction facilities have been configured to include large ground flares to allow for the safe combustion of large volumes of combustible...

Hydrocracking - An Overview

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
April 4, 2012
The paper will present an overview of the Hydrocracking process as applied in the refineries today. It will cover Mild Hydrocracking, Partial...

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