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Petrochemicals

Using a Continuous MPC Algorithm to Control An Unsteady Batch Fermentation Process

Mar 14, 2011
William Stewart
Classical MPC has been leveraged to improve control on a nonlinear unsteady-state system, batch alcohol fermentation. The controller uses a hybrid model with fundamental reaction equations along with empirical process data-based modeling. More than thirty lines of batch quality control have been...

Multi-Model MPC for a Complex pH Neutralization Process

Mar 14, 2011
Weiting Tang
Control of feed pH control is an important task in chemical industries, wastewater treatment, polymerization reactions, fatty acid production and biochemical processes. However, this is a challenging problem due to (i) presence of large and varying time delays and (ii) complex time varying...

Processing Heavy Crudes In Existing Refineries

Mar 13, 2011
Kevin Turini
Increasing amounts of heavy crudes are being produced, particularly in Canada and South America. The discount prices for these crudes, relative to light sweet crudes, make them attractive for refiners that can process them, particularly if they have a geographic advantage relative to the crude...

Impact of MARPOL Annex VI Regulations for Marine Fuels Supply

Mar 23, 2010
Maoqi Feng
The International Maritime Organization's (IMO) has adopted new emissions standards, MARPOL Annex VI, for large ships and their fuels in order to reduce air pollution from the global shipping industry. For the Sulfur Emission Control Area (SECA), including North Sea and California, starting from 1...

Tutorial on Using New Multivariable Solutions to Improve Flow Best Practices

Mar 22, 2010
Nathan Stokes
New advancements in multivariable pressure transmitter technology allow you to improve your flow measurement practices. By better understanding these advancements, you will be better able to quantify and optimize installed performance, select the right combination of compensation for a specific...

Variability, Inventory Uncertainty and Supply Chains

Mar 22, 2010
Tony Cooper
This session will develop a fundamental understanding of how cycle time variation in stages of a supply chain propagates into measures of overall cycle time. Application can be seen in supply chains and inside plants with batch processes. While the sources of variation are symmetrical and can be...

Successful Energy Stewardship

Mar 22, 2010
An energy stewardship program, aimed at driving energy efficiencies from no-cost operational improvements has been implemented with considerable success across the Valero refining system. Two years since commencement of the program roll out, energy use has been reduced by 5% and over $140 million...

Applied Hydroaeromechanics in Oil and Gas Drilling

October, 2009
An all-in-one reference combining hydrodynamic theory with drilling applications for the design, planning, and optimization of drilling operations Hydromechanical processes underlie the majority of technology operations in drilling and present a crucial concern as the pace and depth of drilling...

Oxygen/Combustible Safeguards in Low Nox Fired Heaters

Mar 22, 2010
Edward M. Marszal
Refineries have been installing low NOx equipment on their fired heaters in response to tighter environmental regulation. Low NOx burners minimize air ingress in locations other than directly at the burner, and internally recirculate flue gas in the heater firebox. They operate on much narrower...

Environmental Law and Regulation 101

Mar 21, 2010
Chris A. Paul
This presentation will provide a summary of each of the primary environmental regulatory programs, including air, water, waste and emergency planning. These programs are also known by their statutory names, the Clean Air Act, Clean Water Act, Resource Conservation and Recovery Act and the Emergency...

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