• Oxygen Burners PrimeFire FH (EN)

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    • Oxygen Burners PrimeFire FH

    Technical Information
    • Cooler running burner and block for increased reliability and product life
    • Maintenance free design for less downtime and lower maintenance costs
    • Simple design, easy to configure and order for your specific application
    • 60% reduction in fuel consumption as compared with Air-Fuel Pre-Mix solutions
    • 80% NOx reduction as compared with Air-Fuel Pre-Mix solutions
    • Capable of firing Hydrogen (up to a 20% Hydrogen/80% Natural Gas blend)

    Edition 10.20 · EN
    32-00254-02

    1 Application

    The forehearth is the section of the glass furnace just after melting and just before forming. It’s function is to maintain temperature at glass working point (~1200 °C).

    For furnace OEM’s and operators in the glass industry looking for the latest forehearth burner available on the market, the Eclipse PrimeFire FH delivers next generation technology, longer product life, a maintenance free design, and a unique patent-pending burner-block combination.

    2 Mechanical construction

    The PrimeFire FH has a modular design with a common oxygen body. This allows quick capacity changes by simply changing fuel tubes. The design of this burner is uniquely paired with the block to provide ideal performance in the forehearth environment. The patent pending combination of burner and block creates a long-lasting burner which can reliably run with little maintenance.

    The block, available in Fused Mullite or AZS, depending on the needs of the application, is 5” x 5” square and 9” long, with one burner per each block.

    The oxygen inlet is at a 90 degree angle to the fuel inlet.

    See Dimensions for details on dimensions.

    3 Function

    Forehearth oxygen gas burners are small, nozzle mixing burners designed to be inserted into the forehearth to provide temperature homogeneity throughout the glass by increasing the heat of the glass melt in the area near the forehearth wall where cooling occurs more rapidly.

    These burners consist of a 300-series stainless steel gas tip and a 300-series stainless steel or oxygen nozzle. They produce a short, bright flame intended to keep the temperature of the glass near the forehearth wall, where cooling is most rapid, at the same level as the middle of the glass bed.

    Forehearth burners use one size body for all nozzle sizes making for easier maintenance and greater capacity flexibility. They fire natural gas or up to a 20% Hydrogen/80% Natural Gas fuel blend, and come with a unique block to fit the exact requirements of the burner.

    4 Selection

    The burner is designed with a unique burner and block combination and can be ordered/configured with or without fittings, a choice of standard pipe lengths, choice of block material, and with or without hoses.

    4.1 Burner size

    The PrimeFire FH is designed for use with Natural Gas and can be used with a Hydrogen Natural Gas blend and is available in three sizes to provide the best performance possible across a range of capacity needs.

    Model Natural Gas Fuel Flow Rate,
    scfh (Nm3/hr)     		Hydrogen Blend1) Fuel Flow Rate,
    scfh (Nm3/hr)
    FH0517 5 (0.142) to 17 (0.484) 5.8 (0.15) to 19.7 (0.51)
    FH0935 9 (0.256) to 35 (0.997) 10.4 (0.27) to 40.5(1.06)
    FH1350 13 (0.37) to 50 (1.425) 15 (0.39) to 57.9 (1.5)

    Fuel: Fuel Blend (80% NG + 20% H2) with 863 Btu/ft3 HHV - sg = 0.49

    4.2 Block Material

    Block materials available include Fused Mullite and AZS depending on the customer’s application.

    4.3 Pipe Length

    The standard pipe lengths are available in 2inch increments from 10 to 24 inches in length

    Unique lengths are available on request from the Connected Combustion Solutions team.

    4.4 Fittings

    The PrimeFire FH is available with or without fittings, all with NPT thead.

    4.5 Hoses

    Hoses can be added optionally.

    4.6 Selection table

    Option FH0517 FH0935 FH1350
    Fuel Type G G G
    Pipe and Fittings XXX, 000, 100, 120, 140, 160, 180, 200, 220, 240 XXX, 000, 100, 120, 140, 160, 180, 200, 220, 240 XXX, 000, 100, 120, 140, 160, 180, 200, 220, 240
    Block M, A M, A M, A
    Hoses H, X H, X H, X

    Order example

    FH0517G140MH

    Note: orders using Hydrogen, are specials and will be reviewed by our Engineering Department.

    4.6.1 Type code

    FH0517
    Burner, PrimeFire FH, 5-17 SCFH
    FH0935
    Burner, PrimeFire FH, 9-35 SCFH
    FH1350
    Burner, PrimeFire FH, 13-50 SCFH
    G
    Natural Gas
    XXX
    No Fittings
    000
    Fittings only
    100
    10.0 Inches Long
    120
    12.0 Inches Long
    140
    14.0 Inches Long
    160
    16.0 Inches Long
    180
    18.0 Inches Long
    200
    20.0 Inches Long
    220
    22.0 Inches Long
    240
    24.0 Inches Long
    M
    Block Fused Mullite
    A
    Block AZS
    H
    With Hoses (24")
    X
    No Hoses
    ____
    Enter Zone Reference (Optional)

    5 Project planning information

    5.1 Installation

    Recommended mounting configuration with the
    (1) Oxygen Supply line,
    (2) Fuel Supply Line,
    (3) and pipe clamp.

    It is recommended that the PrimeFire FH be mounted such that the piping is anchored to allow pressure on the burner/block connection in order to ensure ideal performance.

    5.2 Gas Pressures at the Burner

    Natural Gas
    Fuel Oxygen
    Model Fuel Flow rate (SCFH) Fuel Pressure at the Burner ("w.c) Oxy Flow rate (SCFH) Oxy Pressure at the Burner ("w.c)
    FH0517 17 52.4 34 1.3
    FH0935 35 72.9 70 4.7
    FH1350 50 61.5 100 7.96
    Hydrogen
    Fuel1) Oxygen
    Model Fuel Flow rate (SCFH) Fuel Pressure at the Burner ("w.c) Oxy Flow rate (SCFH) Oxy Pressure at the Burner ("w.c)
    FH0517 19.7 57.7 33.4 1.3
    FH0935 40.5 80.2 68.8 4.5
    FH1350 57.9 61.5 98.3 7.7

    1) Fuel: Blend Fuel (80% NG + 20% H2) with 863 Btu/ft3 HHV - sg = 0.49

    5.3 Flame Lengths

    Flame lengths are given at high fire and minimum fire for each capacity. The flame length in this design has a linear relationship with the fuel flow rate. The higher the fuel flow rate at a given capacity the longer the flame

    ModelFuel Flow Rate, scfh (Nm3/hr) Flame Length, inches (meters)
    FH05175 (0.142)
    17 (0.484)     		3 (0.076)
    7 (0.178)
    FH09359 (0.256)
    35 (0.997)     		5 (0.127)
    10 (0.254)
    FH135013 (0.37)
    50 (1.425)     		7 (0.178)
    12 (0.305)

    5.4 Cooling Air Flow

    Removal of the burner nozzle is recommended when the burner is out of service. If removal is not possible, or not chosen, cooling flow, either clean, dry air, nitrogen or oxygen, must be used. Typical compressed air systems contain lubrication oils, which will contaminate oxygen-clean environments and cannot be used for cooling flows without special treatment. Cooling air provided by plant process air fans is one possible source.

    6 Technical data

    Capacity:

    FH0517: 5 to 17 SCFH

    FH0935: 9 to 35 SCFH

    FH1350: 13 to 50 SCFH

    Gas and Oxygen pressure:

    see Gas Pressures at the Burner

    Gas types:

    Natural gas, Hydrogen (up to 20% H2, 80% NG Blend)

    Block material:

    Fused Mullite

    AZS

    6.1 Dimensions

    Basic dimensions of the PrimeFire FH, showing both the Oxygen Inlet and Fuel Inlet orientation to the burner and block assembly.

    7 Maintenance

    The PrimeFire FH requires very little maintenance, if any. However, preventative maintenance is the key to a reliable, safe and efficient system. Burners in severe environments or operational conditions should be checked more frequently. Spare burners not in use should be completely drained and stored vertically to prevent rusting.

    NOTE: The periodic, monthly, and yearly lists are an average interval. If your environment is dirty, the intervals may be shorter. Check with local authorities having jurisdiction regarding their recommended maintenance schedules.

    For more details, refer to the Operating Instructions for Oxy-Fuel Burner PrimeFire FH

    8 Spare Parts

    The web app PartDetective for selecting spare parts is available at www.adlatus.org.