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Alfa Laval Packinox for hydrotreating0 pages
Feed/effluent heat exchangers
The Alfa Laval Packinox Feed/Effluent Heat Exchanger for
hydrotreaters is a large heat transfer bundle inside a pressure
vessel. All heat transfer takes place inside the bundle, which
operates in true counter-current flow. Four bellows
compensate for differential thermal expansion between the
hot stainless steel bundle and the relatively cool low alloy
pressure vessel. Top and bottom end manholes facilitate
access for maintenance or repairs.
Because the bundle has no gaskets to soften and leak, the
exchanger can operate in temperatures as high as 550°C
(1000°F). Maximum operating pressure is the same as for the
pressure vessel. The low number of high-pressure flanges in
hot hydrogen service such as gasoil hydrodesulfurization
greatly reduces combustible vapor leaks and emissions of
toxic hydrocarbons and H2S.
Refiners see this as a major step forward in plant safety and
environmental performance for new units and revamps alike.
HDS flue gas emissions of SOX and NOX are also reduced
because charge heater duty is lower – or even zero – with
Alfa Laval Packinox technology.
Motivated by cheaper, cleaner, safer operation than offered by
other designs, refiners now more than ever find Alfa Laval
Packinox heat exchangers an efficient way to optimize their
hydrotreaters.
Alfa Laval Packinox devotes considerable resources to
research and development of heat exchangers for
hydrotreaters in response to the continued interest the
refining industry has shown since the first Alfa Laval Packinox
Feed/Effluent Heat Exchanger was installed in a hydrotreating
unit in 1993.
Feed/effluent heat exchangers and stripper bottoms heat exchangers
Alfa Laval Packinox for hydrotreating
