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The Application of Ceramic Coatings to Extend Radiant Tube Life in Process Heaters and Improve Operational Efficiency with Cost Benefit Analysis

Picture for The Application of Ceramic Coatings to Extend Radiant Tube Life in Process Heaters and Improve Operational Efficiency with Cost Benefit Analysis
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Ceramic coatings technologies are an effective surface engineering tool in the management of heat flux on metal surfaces. Thin ceramic coatings can be employed to either increase or decrease heat transfer on metal surfaces by modulation of emissivity. While this characteristic is relatively easily impressed on a surface, long term coating sustainability and oxidation protection of the underlying metal is not readily achieved. This presentation provides a technical data-based introduction to the function, performance, testing, and installation of ceramic coatings on two key pieces of refining equipment.
• Process heaters are critical production assets for the downstream hydrocarbon processing industries such as refineries and petrochemical plants. The efficient operation of these units is vital to plant productivity since they consume large amounts of energy to provide the required heat for the process. They may also bottleneck feed throughout due to heat transfer limits. Scaling and hot spots in the radiant tube section can cause local coking and premature material failure. Improvements in operating efficiency and reliability can yield significant cost benefits and a fast return on investment. Additionally, radiant transfer properties of existing refractory systems can be improved, increasing process efficiencies. Know ceramic performance metrics can be used to predictively model performance improvement. • Flare tips routinely suffer from material overheat, creep and oxidation. Ceramic systems are employed to mitigate these, through the installation of both low emissivity and low conductive heat transfer materials. This paper and case study discusses how different ceramic systems can be used in the management of heat transfer, the protection of surfaces from corrosion, and provide insight into the less intuitive mode by which heat transfer can be promoted.

Product Number: MPWT19-14438
Author: John Bacon, Johannes Poth and Iain Hall
Publication Date: 2019
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