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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.
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