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| Maximisingy gas plant capacit |
Tony Barletta and Scott Fulton Process Consulting Services Inc |
2004 / Q2 |
Water
entrapment and foaming must be avoided to maximise LPG recovery and
minimise downstream unit contaminants. Fundamental process and
equipment design principles that cause water entrapment and foaming are
reviewed
More
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| Fluidised catalytic cracker hydrotreater revamp |
Raj Patel Haldor Topsoe Inc
Howard Moore Harrell Duff Brian Hamari Marathon Ashland Petroleum LLC
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2004 / Q2 |
Primary
revamp of reactors, exchangers and other FCC pretreater components
provided return on investment for a complex refining facility. Improved
FCC yields, even from heavier feedstocks, increased the facility’s ULS
fuels capacity
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| Catalyst addition in ebullated-bed units |
Scott Sayles and Jim Bailor KBC Advanced Technologies Inc |
2005 / Q2 |
A
simple theoretical approach is available for calculating the catalyst
metals content, catalyst physical properties and the effect on catalyst
activity. Different catalyst addition rates are reviewed and compared
More
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| Turnaround preparation |
Don Turner Jacobs Field Services
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2005 / Q2 |
Several
work processes have been developed for maintenance turnarounds.
Incorporating these processes into a master cost-control and scheduling
system ensures materials availability as well as correct staffing
levels and timely execution
More
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| ULSD production: improved feed stream quality |
Daryl Hanson and Steve White, Process Consulting Services Inc |
2003 / Q2 |
Much
of hydrotreater revamp investment costs in future will be in dealing
with the most difficult-to-remove sulphur species, because of their low
reaction rates. But upstream fractionation improvements could
bring significant cost benefits.
More
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| Maximising profitability with FCC revamps |
Mark W Schnaith and Larry A Lacijan, UOP |
2003 / Q2 |
Three
case studies of the way increased capacity and product flexibility were
achieved in the face of equipment limitations and operating
constraints. Optimising feed injectors and riser disengagers was
among the strategies employed.
More
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| Hydrogen optimisation at minimal investment |
Nick Hallale and Ian Moore, AspenTech Ltd
Dennis Vauk, Air Liquide |
2003 / Q2 |
Refiners
making long-term investments to meet clean fuel specifications could at
the same time, with already-available technology, improve their
existing hydrogen resources to boost profitability in the short
term. The authors review the options.
More
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| C2 splitter retrofit and performance |
Sabah Kurukchi and Joseph Gondolfe, Stone and Webster
Antonio Joao Dias Prestes and Sergio Peter, Companhia Petroquimica do Sul (Copesul)
Peter McGuire, UOP |
2003 / Q2 |
High
capacity valve trays have been replaced during a tower revamp with a
different tray design, providing greater capacity plus ethylene
product. The trays operate at higher turndown in reflux and feed
rates and still produce on-spec products.
More
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