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Passive Autocatalytic Recombiner NuRAPh2

  • Operation without external energy supply or intervention
  • Improved safety margin against hydrogen risk by lowering the ignition threshold to 0.5% of hydrogen concentration
  • Optimising natural convection for stack design and improving recombination performance
  • Modular product with configurable reaction surface and stack height to optimally meet the expected recombination requirements
  • To reduce congestion in comparison to conventional recombiners, suitable for rooms with low ceilings
  • Stainless steel construction for high durability, (excluding fixing systems and catalytic blocks)
  • Robust mechanical assembly design ensures reliability and accessibility
  • Once in place, the catalytic converters operate completely independently,  Their light and compact design, combined with  drawer installations, allowing easy maintenance and control
    The NuRAPh2 recombiner technology is patented.
  • Optimal performance in a reduced congestion due to its honeycombe structure, providing a large exchange surface for the catalytic reaction
  • Catalytic reaction initiation from 0,5% and nominal recombination rate at 1% H2 to 100% rH at 20°C (experimentally qualified at full scale)
  • Thermal disperion limited to the catalytic blocks
  • Seismic anti-aggression and operating resistance
  • No alterations of the recombiners characteristics in the presence of CO and CO2
NuRAPh2-1 NuRAPh2-2 NuRAPh2-6 NuRAPh2-4L
Width (mm) 323 473 1073 773
Depth (mm) 470 470 470 470
Height (mm) 927 927 927 1477
Number of  catalytic blocks 2 4 12 8
Priming 20°C, 100% r.H. 20°C, 100% r.H. 20°C, 100% r.H. 20°C, 100% r.H.
 Recombination rate reference*
(4% H2, 1.5 bar)		 0,14 0,29 0,87 1,35

 

 NuRAPh2-6L  NuRAPh2-10L
Width (mm) 1073 1673
Depth (mm) 470 470
Height (mm) 1477 1477
Number of  catalytic blocks 12 20
Priming 20°C, 100% r.H. 20°C, 100% r.H.
 Recombination rate reference*
(4% H2, 1.5 bar)		 2,02 3,37

 

*Comparison with practices in the field

Recomination rate of NuRAPh2-2
%vol H2 Recombination rate at Patm, 20°C
1% 0.3m3/h
2% 0.8m3/h
  • Mass 20 kg for the NuRAPh2-2, excluding support
  • Qualifying non-aggressive seismics
  • Performance not affected by the presence of CO and CO2
  • Summary of MPR79330-NSQ-01 qualification, based on experimental tests at the Jûlich Institute and numerical simulations carried out jointly with IRSN
Description

Passive Autocatalytic Recombiner

NuRAPh2 is a passive autocatalytic recombiner that secures the intergrity of installations against hydrogen risks.

It can be customised to meet  protection needs and adapts to the environmental constraints of the premises to be protected.

It contains catalytic substrates with a «honeycombe» structure that allows hydrogen to be recombined as low as 0,5% of hydrogen concentration, even under extreme humidity conditions.

Interested in this product ? Get in touch with a sales rep.
  • Operation without external energy supply or intervention
  • Improved safety margin against hydrogen risk by lowering the ignition threshold to 0.5% of hydrogen concentration
  • Optimising natural convection for stack design and improving recombination performance
  • Modular product with configurable reaction surface and stack height to optimally meet the expected recombination requirements
  • To reduce congestion in comparison to conventional recombiners, suitable for rooms with low ceilings
  • Stainless steel construction for high durability, (excluding fixing systems and catalytic blocks)
  • Robust mechanical assembly design ensures reliability and accessibility
  • Once in place, the catalytic converters operate completely independently,  Their light and compact design, combined with  drawer installations, allowing easy maintenance and control
    The NuRAPh2 recombiner technology is patented.
  • Optimal performance in a reduced congestion due to its honeycombe structure, providing a large exchange surface for the catalytic reaction
  • Catalytic reaction initiation from 0,5% and nominal recombination rate at 1% H2 to 100% rH at 20°C (experimentally qualified at full scale)
  • Thermal disperion limited to the catalytic blocks
  • Seismic anti-aggression and operating resistance
  • No alterations of the recombiners characteristics in the presence of CO and CO2
NuRAPh2-1 NuRAPh2-2 NuRAPh2-6 NuRAPh2-4L
Width (mm) 323 473 1073 773
Depth (mm) 470 470 470 470
Height (mm) 927 927 927 1477
Number of  catalytic blocks 2 4 12 8
Priming 20°C, 100% r.H. 20°C, 100% r.H. 20°C, 100% r.H. 20°C, 100% r.H.
 Recombination rate reference*
(4% H2, 1.5 bar)		 0,14 0,29 0,87 1,35

 

 NuRAPh2-6L  NuRAPh2-10L
Width (mm) 1073 1673
Depth (mm) 470 470
Height (mm) 1477 1477
Number of  catalytic blocks 12 20
Priming 20°C, 100% r.H. 20°C, 100% r.H.
 Recombination rate reference*
(4% H2, 1.5 bar)		 2,02 3,37

 

*Comparison with practices in the field

Recomination rate of NuRAPh2-2
%vol H2 Recombination rate at Patm, 20°C
1% 0.3m3/h
2% 0.8m3/h
  • Mass 20 kg for the NuRAPh2-2, excluding support
  • Qualifying non-aggressive seismics
  • Performance not affected by the presence of CO and CO2
  • Summary of MPR79330-NSQ-01 qualification, based on experimental tests at the Jûlich Institute and numerical simulations carried out jointly with IRSN
DOWNLOADABLE DOCUMENTS
Download
Product sheet
RÉFÉRENCES
Jülich Institute
IRSN
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