15-02-2021
XRG completes turnkey heater efficiency project
XRG Technologies recently completed the revamp of a large vertical cylinder (VC) crude heater, solving several operational problems while increasing efficiency from 78% to 91%.
Utilizing CFD modeling, XRG discovered that the existing double circle burner layout was causing flame clouds, hot spots on the tubes, and substantial outlet temperature imbalances between the different radiant passes limiting the furnace capacity. The hot spots caused radiant section tube creep in the heater and shorter run lengths between decoking.
To increase the heater efficiency, XRG designed a balanced draft air preheat system to take advantage of the heat that was being lost out the stack. XRG engineers modeled the combustion inside the furnace and optimized the heat flux profile by replacing the fifteen existing natural draft burners with five new forced draft burners.
Because the higher capacity burners operate with preheated combustion air, XRG worked with the burner manufacturer to produce optimal flame height and flux profile while meeting the stringent NOx requirements when operating on the refinery’s wide variety of fuels.
To take advantage of an already planned outage on the heater, XRG provided turn-key supply and installation of the equipment required to revamp the heater, including ID and FD fans, ductwork, dampers and air pre-heater. XRG utilized its 3D modeling capabilities to design flue gas and combustion air duct work that would fit into the tight existing space around the heater and ensure it could be easily installed during the short shutdown window.
XRG met all emissions, operational, efficiency and reliability goals for this VC Heater Revamp!
XRG Technologies is an innovative engineering and procurement firm specializing in fired equipment for the refining, petrochemical, and power markets. We collaborate with our partners to solve complex problems and manage projects from concept to completion. Our staff of industry experts will partner with you and function as your outside engineering support team. Our team of fired heater, burner, boiler, flare, vapor recovery and thermal oxidizer experts to create one centralized, go-to engineering firm for all your fired equipment needs!
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