Alfa Laval Packinox for hydrotreating - Alfa Laval - #1

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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