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Heater Supports material spec

Home Forums Coking Technical Heaters & Furnaces Heater Supports material spec

This topic contains 4 replies, has 3 voices, and was last updated by  antonio saura Cebrian 12 years, 10 months ago.

  • Author
    Posts
  • #2810

    Freddy Martinez
    Participant

    What is the typical material used for tubes supports on a Coker Heater?
     
    Thanks, RI.

  • #5841

    Some specificacion for this heater
    ASTM specification a grade A351 HK40
     

    TUBE SUPPORTS



















    Location (top, bottom, intermediate):


    RADIANT ENDS

    RADIANT INTER.

    CONV. ENDS

    CONV. INTER.


    Material (ASTM specification and grade):


    TP 304 SS

    25Cr-20Ni A-297-HK

    S.S.

    25Cr-20Ni A-297-HK


    Spacing:




    in
    14′- 7″ MAX

    14′- 7″ MAX

    13′ – 1″ MAX

    13′ – 1″ MAX


    Coating (type and thickness):



    5″ – CASTABLE

    NONE

    4″ – CASTABLE

    NONE


    Design Metal Temperature



    F
    1.000

    1.780

    1000

    1,700 / 1,390 / 1,040

     
    Refractory Anchors (Material & Type):

     
    TP304SS V-CLIPS

    N/A

    TP304SS V-CLIPS

    N/A

    TUBE GUIDES
     
                      

               

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
          
     
     

  • #5840

     
    TUBE SUPPORTS

     

















     

    Location (top, bottom, intermediate):


    RADIANT ENDS

    RADIANT INTER.

    CONV. ENDS

    CONV. INTER.

     

    Material (ASTM specification and grade):


    TP 304 SS

    25Cr-20Ni A-297-HK

    S.S.

    25Cr-20Ni A-297-HK

     

    Spacing:




    in
    14′- 7″ MAX

    14′- 7″ MAX

    13′ – 1″ MAX

    13′ – 1″ MAX

     

    Coating (type and thickness):



    5″ – CASTABLE

    NONE

    4″ – CASTABLE

    NONE

     

    Design Metal Temperature



    F
    1.000

    1.780

    1000

    1,700 / 1,390 / 1,040

     
     
    Refractory Anchors (Material & Type):

     
    TP304SS V-CLIPS

    N/A

    TP304SS V-CLIPS

    N/A

  • #5839

    also TP304 SS   25 Cr-20Ni A-297 HK in Radiant section

  • #5797

    Claus Graf
    Participant

    The heaters I’ve seen had 25 Cr 20 Ni cast tube supports in the radiant section.
     
    However, depending on the fuel quality, higher alloy of Cr-Ni might be required.
     
    The link below might be helpful:
     
    http://www.fwc.com/publications/tech_papers/files/tindall%2Epdf
     
    Regards, CG

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