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Lord Fin Tube--Introduction of High Flux tubes

High flux tube is a new product combining sintered method and machining technology. They can improve heat transfer coefficient of the inside and outside tubes , thus they can significantly improve overall heat transfer coefficient of tubes. They solve the current problem that heat transfer coefficient increased only on one side of heat transfer enhancement, while the total heat transfer efficiency is still low. They greatly improve the efficiency of the heat transfer tubes and heat exchangers.

On the one hand, High flux tube can reduce the steam demand. On the other hand, it can improve the heat transfer capability. In a large heat transfer system, because of the need of small temperature differences, the number of reboilers needed is very large. The use of High flux tube can reduce 3/4 the amount of reboilers, and temperature difference ΔT needed for only 5 ℃. Using High flux tube to replace traditional bare tube we can eliminate heat transfer bottlenecks, meet the need of larger heat transfer load, and significantly increase production. At the same time, while keeping machine efficiency, it can reduce cost by using lower steam pressure. 

High Flux tubes have been used extensively in a wide variety of services in the petrochemical and refining industry for more than 40 years.  High Flux tubes provide a significant performance advantage in boiling applications by reducing the CAPEX and OPEX for both grassroots and revamp projects.  This paper will illustrate how the benefits of the High Flux tube technology can be applied for plant operation optimization by reviewing a case study for a gas plant deethanizer unit revamp.  Revamping the unit’s bottlenecked condenser and reboiler with High Flux tubes increased the plant’s production rate by more than 60 percent within the existing limitations of the available heating and cooling mediums and plant footprint.  Heat exchanger bundle geometry modifications allowed for a maximum area revamp of the condenser, while mitigating critical heat flux concerns (vapor blanketing) in the steam-driven reboiler.

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