Toxic Gas Mitigation Nozzles

Containment and mitigation of toxic gas leaks with water spray systems


Chemical processing plants, refineries, and manufacturing facilities use and/or produce acidic or basic solutions, such as hydrofluoric acid (HF), hydrochloric acid (HCl), chlorine (Cl), or ammonia (NH3) that are capable of producing toxic gas clouds if they are accidentally leaked or exposed to atmospheric conditions. Mitigation of accidental releases of these gases can often be accomplished with water sprays that have a small average droplet size, thereby maximizing the surface area to volume ratio and providing the greatest contact between the water and the toxic/corrosive gas. BETE nozzles are used worldwide in toxic gas mitigation spray systems to remove water soluble, toxic gases from the air in the event of an accidental leak, preventing the spread of hazardous and/or poisonous vapor clouds into the atmosphere by producing a cloud of small droplets capable of capturing and containing the leak.

 

Download the BETE Fire Protection Brochure (PDF - 1.4MB)

BETE Nozzles for Fire Protection (PDF - 25 KB)
 

Selecting a Toxic Gas Mitigation Nozzle:

Important factors to consider:

  • Size & shape of target object or area
  • Available nozzle mounting locations
  • Required droplet size for effective mitigation
    • In most applications, maximizing the surface area to volume ratio of the spray is the most important factor as this exposes the greatest amount of surface area
    • As the absorption kinetics are primarily driven by surface area, this leads more efficient capture of the gas by the liquid
  • Required flow rate for effective mitigation
  • Available pressure drop (∆P) across the nozzle
    • ∆P = supply pressure at nozzle inlet - process pressure outside nozzle
  • Required material for environment and chemical compatability
  • Our experienced engineers can help determine which nozzle will perform as required with your design details
    • BETE is pleased to offer assistance in selecting nozzles and materials to meet the detailed specifications, required nozzle performance (K-factor (flow vs pressure), pattern/coverage, droplet size, etc.) and documentation requirements associated with approved water spray systems
    • However, as a nozzle manufacturer, BETE Fog Nozzle, Inc. cannot assume responsibility for the design of life/safety systems

Common Toxic Gas Mitigation Nozzle Uses and Industries:

  • Chemical processing industry
  • Petroleum industry
  • Power generation industry
  • Dousing leaks from ammonia tanks in the chemical industry
  • Containing accidental release of HF, HCl, or Cl gases
  • Dispersion of LNG vapor clouds
  • Towers and columns where absorption/mitigation is an integral part of the overall process stream

TF

  • BETE TF16FCN and TF20FCN nozzles were chosen for mitigation systems of accidental releases of hydrofluoric acid (HF) by the Industry Cooperative Hydrogen Fluoride Mitigation Assessment Program
  • Thirty percent finer atomization than an equivalent whirl nozzle
Nozzle Type(s):
Spiral
  • BETE is the originator of the spiral nozzle design, providing unparalleled atomization and clog resistance
Spray Pattern(s):
Full Cone
Flow Range:
.494 to 335 gpm
Typical Pressure Range:
40 to 150 psi
Angle Range:
90 - 170°
Common Materials:
316, Polypropylene, PTFE, PVDF
  • Plastics such as PTFE (Teflon), PVDF (Kynar), and polypropylene are often preferred due to the corrosive nature of the gases involved.

Full Cone

Select a nozzle number below for performance graph, drawings, and to request a quote.
Nozzle Number Connection Sizes Spray Angles gpm @ psi     (density: 1 SG)
5 psi 20 psi 40 psi 60 psi 100 psi 400 psi
TF 6 1/8″, 1/4″, 3/8″ 90°, 120°, 150°, 170° .494 .988 1.40 1.71 2.21 4.42
TF 8 1/8″, 1/4″, 3/8″ 90°, 120°, 150°, 170° .919 1.84 2.60 3.18 4.11 8.22
TF 10 1/4″, 3/8″ 90°, 120°, 150°, 170° 1.41 2.83 4.00 4.90 6.32 12.6
TF 12 3/8″ 90°, 120°, 150°, 170° 2.12 4.24 6.00 7.35 9.49 19.0
TF 14 3/8″ 90°, 120°, 150°, 170° 2.86 5.72 8.10 9.91 12.8 25.6
TF 16 3/8″ 90°, 120°, 150°, 170° 3.76 7.51 10.6 13.0 16.8 33.6
TF 20 3/8″ 90°, 120°, 150°, 170° 5.84 11.7 16.5 20.2 26.1 52.2
TF 24 1/2″ 90°, 120°, 150°, 170° 8.52 17.0 24.1 29.5 38.1 76.2
TF 28 1/2″ 90°, 120°, 150°, 170° 11.7 23.3 33.0 40.4 52.2 104
TF 32 3/4″ 90°, 120°, 150°, 170° 14.8 29.7 42.0 51.4 66.4 133
TF 40 1″ 90°, 120°, 150°, 170° 23.7 47.4 67.0 82.1 106 212
TF 48 1″ 90°, 120°, 150°, 170° 33.5 67.1 94.9 116 150 300

These values are filtered based on search criteria or application and do not represent the full range of nozzles for this series. Click here to see all available series offerings.

TF

  • BETE TF16FCN and TF20FCN nozzles were chosen for mitigation systems of accidental releases of hydrofluoric acid (HF) by the Industry Cooperative Hydrogen Fluoride Mitigation Assessment Program
  • Thirty percent finer atomization than an equivalent whirl nozzle
Nozzle Type(s):
Spiral
  • BETE is the originator of the spiral nozzle design, providing unparalleled atomization and clog resistance
Spray Pattern(s):
Hollow Cone
Flow Range:
.494 to 335 gpm
Typical Pressure Range:
40 to 150 psi
Angle Range:
90 - 170°
Common Materials:
316, Polypropylene, PTFE, PVDF
  • Plastics such as PTFE (Teflon), PVDF (Kynar), and polypropylene are often preferred due to the corrosive nature of the gases involved.

Hollow Cone

Select a nozzle number below for performance graph, drawings, and to request a quote.
Nozzle Number Connection Sizes Spray Angles gpm @ psi     (density: 1 SG)
5 psi 20 psi 40 psi 60 psi 100 psi 400 psi
TF 6 1/4″ 90°, 120° .494 .988 1.40 1.71 2.21 4.42
TF 8 1/4″ 90°, 120° .919 1.84 2.60 3.18 4.11 8.22
TF 10 1/4″ 90°, 120° 1.41 2.83 4.00 4.90 6.32 12.6
TF 12 3/8″ 90°, 120° 2.12 4.24 6.00 7.35 9.49 19.0
TF 14 3/8″ 90°, 120° 2.86 5.72 8.10 9.91 12.8 25.6
TF 16 3/8″ 90°, 120° 3.76 7.51 10.6 13.0 16.8 33.6
TF 20 3/8″ 90°, 120° 5.84 11.7 16.5 20.2 26.1 52.2
TF 24 1/2″ 90°, 120° 8.52 17.0 24.1 29.5 38.1 76.2
TF 28 1/2″ 90°, 120° 11.7 23.3 33.0 40.4 52.2 104
TF 32 3/4″ 90°, 120° 14.8 29.7 42.0 51.4 66.4 133
TF 40 1″ 90°, 120° 23.7 47.4 67.0 82.1 106 212
TF 48 1″ 90°, 120° 33.5 67.1 94.9 116 150 300

These values are filtered based on search criteria or application and do not represent the full range of nozzles for this series. Click here to see all available series offerings.

N

  • FM Approved, UL Listed, Lloyd's Register
  • U.S. Coast Guard Approval for N3-N5 ratings (90° and 120°)
  • Clog resistant, one piece design
  • Suitable for use in NFPA 15 compliant systems
  • Designed for industrial environments
  • Available with blow-off covers to prevent build-up and clogging in open orifices and piping while not in use
Nozzle Type(s):
Spiral
  • BETE is the originator of the spiral nozzle design, providing unparalleled atomization and clog resistance
Spray Pattern(s):
Full Cone
Flow Range:
3.00 to 237 gpm
Typical Pressure Range:
40 to 150 psi
Angle Range:
90 - 120°
Common Materials:
316

Full Cone

Select a nozzle number below for performance graph, drawings, and to request a quote.
Nozzle Number Connection Sizes Spray Angles gpm @ psi     (density: 1 SG)
10 psi 20 psi 50 psi 75 psi 100 psi 150 psi
N 1 1/2″ 90°, 120° 3.00 4.24 6.71 8.22 9.49 11.6
N 2 1/2″ 90°, 120° 5.31 7.51 11.9 14.5 16.8 20.6
N 3 1/2″ 90°, 120° 8.25 11.7 18.5 22.6 26.1 32.0
N 4 1/2″ 90°, 120° 12.0 17.0 26.9 33.0 38.1 46.7
N 5 1/2″ 90°, 120° 16.5 23.3 36.9 45.2 52.2 63.9
N 6 1/2″, 1″ 90°, 120° 21.0 29.7 47.0 57.5 66.4 81.3
N 7 1″ 90°, 120° 33.5 47.4 75.0 91.8 106 130

These values are filtered based on search criteria or application and do not represent the full range of nozzles for this series. Click here to see all available series offerings.

TFXP

  • BETE TFXP nozzles provide the proven performance of the TF series with greater free passage for ultimate clog resistance
  • Largest free passage possible in a spiral nozzle - passes particles equal to the orifice size
  • Clog resistant
Nozzle Type(s):
Spiral
  • BETE is the originator of the spiral nozzle design, providing unparalleled atomization and clog resistance
Spray Pattern(s):
Full Cone
Flow Range:
2.12 to 335 gpm
Typical Pressure Range:
40 to 150 psi
Angle Range:
90 - 120°
Common Materials:
316, Polypropylene, PTFE, PVDF
  • Plastics such as PTFE (Teflon), PVDF (Kynar), and polypropylene are often preferred due to the corrosive nature of the gases involved.

Full Cone

Select a nozzle number below for performance graph, drawings, and to request a quote.
Nozzle Number Connection Sizes Spray Angles gpm @ psi     (density: 1 SG)
5 psi 20 psi 40 psi 60 psi 100 psi 400 psi
TFXP 12 3/8″ 90°, 120° 2.12 4.24 6.00 7.35 9.49 19.0
TFXP 14 3/8″ 90°, 120° 2.86 5.72 8.10 9.91 12.8 25.6
TFXP 16 3/8″ 90°, 120° 3.76 7.51 10.6 13.0 16.8 33.6
TFXP 20 3/8″ 90°, 120° 5.84 11.7 16.5 20.2 26.1 52.2
TFXP 24 1/2″ 90°, 120° 8.52 17.0 24.1 29.5 38.1 76.2
TFXP 28 1/2″ 90°, 120° 11.7 23.3 33.0 40.4 52.2 104
TFXP 32 3/4″ 90°, 120° 14.8 29.7 42.0 51.4 66.4 133
TFXP 40 1″ 90°, 120° 23.7 47.4 67.0 82.1 106 212
TFXP 48 1″ 90°, 120° 33.5 67.1 94.9 116 150 300

These values are filtered based on search criteria or application and do not represent the full range of nozzles for this series. Click here to see all available series offerings.