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| Revamps 2006 |
Rene G Gonzalez, PTQ.
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2006 / Revamps |
Today's refinery revamps are commissioned with the aim of increasing transportation fuel production by adding
conversion
capacity. Higher reactor capacity needs significant scope to
improve the throughput and efficiency of associated product recovery
systems.
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| Vacuum unit pressure control |
Tony Barletta, Process Consulting Services Inc
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2006 / Revamps |
Nowhere
is attention to detail more important than in vacuum column presure
control. Operational issues such as higher heater duty and column
pressure must be weighted against avoiding residue entrainmnet in HVGO.
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| Distributor design and testing |
Deepak Dhabalia and Mark Pilling, Sulzer Chemtech Inc.
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2006 / Revamps |
A
new main fractionator designed to separate a range of feed streams
incorporates multiple layers of structured packing and a slurry
section. Flow testing to verify the distribution quality of the
column distributors is essential.
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| Fast-tracking an FCC revamp |
Michael Whatley, Navajo Refining Company
Scott Golden and Tony Barletta, Process Consulting Services
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2006 / Revamps |
The
design, detailed engineering and installatioin of one revamp took just
four-and-a-half months. Unit feed rate, product recovery and
product quality objectives were all met after the revamp.
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| Improving FCCU conversion and yields |
Warren S Letzsch, Shaw Stone & Webster Inc
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2006 / Revamps |
A
revamp of a Romanian FCCU included the replacement of old equipment,
such as a hot wall reactor with a cold wall design, which significantly
improved yields, operation and reliability.
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| Main fractionator water wash systems |
Christopher F Dean, Saudi Aramco Scott W Golden, Process Consulting Services Inc
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2006 / Revamps |
When
properly designed and operated, main fractionator wash water systems
can remove salt with little upset. Misconceptions concerning the
minimum column overhead temperature and operation when producing FCC
heavy naphtha are discussed.
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| Increasing deisobutaniser capacity |
Guiseppe Mosca, Gitta Van Hemel and Roberto Tocco, Sulzer Chemtech Bruno Lestrade, Total Group
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2006 / Revamps |
Insight
into procedures and details involving a distillation revamp can be
gained by looking at a project carried out on a deisobutaniser unit
separating isobutane from normal butane and heavier hydrocarbons.
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| Vacuum heater installation |
Giampiero Caronno, Foster Wheeler Italiana SpA
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2006 / Revamps |
One
refinery has proved it is possible to revamp any process unit by
modification and/or replacement of key process equipment in situ.
The project was completed in less than 12 months and included a 350-ton
fired heater module.
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| Digitising plants using laser scanning |
James McGill, Quantapoint
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2006 / Revamps |
In
a typical revamp situation, a lack of accurate as-built documentation
is frequently encountered. Digitising plants using laser scanning
can provide detailed unit dimensional and layout information, as well
as yield significant ROI.
More
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