Chemicals & Materials

Reducing Process Complexity for Cellulosic Ethanol

Conference Presentation
AIChE Annual Meeting
October 18, 2011
Much of the process complexity and high capital costs associate with cellulosic ethanol (dilute acid hydrolysis as a pretreatment and enzymatic...

Fermentation of Carbon Dioxide to Ethanol

Conference Presentation
AIChE Annual Meeting
October 16, 2011
Many fermentation processes have been used to convert biomass to various fuels. Syngas, which is a mixture of CO, CO 2 , and H 2 , is one process...

Carbon Impact On Lithium-Sulfur Battery Performance

Conference Presentation
AIChE Annual Meeting
October 16, 2011
Several carbons were evaluated for supporting sulfur in a lithium sulfur battery. The carbon properties had a significant impact on performance.

A New Class of Polymer Inhibitors

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 16, 2011
Polymer inhibitors are used within an ethylene plant in locations which are susceptible to aggressive polymer formation i.e. Primary Fractionator,...

Process Automation During Refinery Unit Transitions

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 15, 2011
Process Automation ideas and technologies have been used sporadically for decades. However, in US refineries, automation technologies are still...

Introductory Remarks

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 15, 2011

Flare Minimization Via Dynamic Simulation

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 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...

Mitigation of Preheat Fouling by Eliminating the Cause

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 15, 2011
Today, there is no excuse for not getting five years or more on the run length of refinery preheat exchangers without the need for cleaning. Among...

Improving Ethylene Charge Gas Compressor Performance

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 15, 2011
The changing landscape of the ethylene industry requiring more feedstock flexibility and upstream and downstream integration increases the complexity...

Trip & Throttle Valve Reliability

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 15, 2011
Trip & Throttle Valve Reliability Trip & Throttle (or Stop) valves are used in ethylene plants to isolate the energy to steam turbines when...

Ethylene Boil-off Compressor Process Safety Incident

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 15, 2011
Braskem, a Brazilian player among petrochemical manufacturers, produces monomers, resins and chemicals specialties. The overall Ethylene capacity is...

Cracked Gas Compressor Control Tutorial

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 15, 2011
The market conditions over the couple of years has prompted many end-users to review antisurge control design to help lower their energy index. A...

Advanced Hydrogen Management : More Than a Balancing Act

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 15, 2011
Modern high complexity refining landscape involves increasing proportion of “opportunity crude” processing and widened bottom-of-the-barrel...

Objectives of Anti-Surge Control

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 15, 2011
Objectives of Anti-Surge Control Preventing a compressor surge is the primary purpose of an anti-surge controller. However, there are additional...

Thoughts about Safety, Staying at Zero

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 15, 2011
Perfect safety records and perfect environmental records are an “inalienable right”, given to us not by governments, companies, or others. It is a...

Operational Inputs Into the Mechanical Integrity Program

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 15, 2011
A predictive mechanical integrity (MI) program is based on the following: * Damage mechanisms that affect process equipment. * Rate at which...

Industry Standards for Composite Repair Systems

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 14, 2011
ABSTRACT A significant amount of work has transpired over the past several years in generating consensus-based standards that include ASME PCC-2 and...

Petroleum Resid Conversion: Opportunities and Limitations

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 14, 2011
In the conversion of vacuum resids one has the option to form coke as a byproduct or to devise conversion processes that prevent coke formation while...

C5 Metathesis for Increased Propylene Production

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 14, 2011
The production of on-purpose propylene via the metathesis of ethylene and butenes now exceed 6% of the total propylene. The supply of butenes is...

Life Cycle of Aluminum Plate Fin Exchangers

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 14, 2011
Abstract: Corrosion, blockage, fouling, and mechanical/thermal overload are the key degradation mechanisms that operators need to control to avoid...

Multi-Model MPC for a Complex pH Neutralization Process

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 14, 2011
Control of feed pH control is an important task in chemical industries, wastewater treatment, polymerization reactions, fatty acid production and...

Exploitation of Low-Grade Heat In Site Utility Systems

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 14, 2011
The site utility system provides the heating, cooling load along with power production for the processes on the total site. Low-grade heat is...

Novel Additives to Improve Resid Quality

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 14, 2011
With an increasing focus on resid upgrade and bottom of the barrel conversion over the years due to economic advantages, refiners are increasingly...

New Continuous Coking Process

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 14, 2011
NEW CONTINUOUS COKING PROCESS A new coking process can accept resid feed from the conventional resid heater in a coking plant and continuously...

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