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HN/HNX gas generation - Protective gas

Mahler AGS HN/HNX gas generation plants are based on the combustion of hydrocarbons to cover protective gas demands for up to 1.200 Nm³/h. Hydrogen contents between 1 - 12 vol. -% can be achieved.


The sub stoichiometric combustion of hydrocarbons (NG, LPG) with subsequent conversion of CO to CO2 followed by removal of CO2 by means of Mono Ethanol Amine (MEA) is a well-established process for the generation of protective gas. Depending on customers’ demands the HN/HNX gas generation plants can deliver a protective gas with a hydrogen content between 1 vol.- % to 12 vol.-%.

Individual plant concepts to cover higher capacities and different hydrogen contents, as well as back-up systems to guarantee a continuous gas supply can be offered.

For a detailed process description and process flowsheet please click here.

Plant features of the HN/HNX gas generation plants

  • Low cost on-site production
  • Fully automatic and unattended operation
  • Product flexibility regarding flow and H2-content
  • Completely pre-manufactured skids
  • High availability and reliability
  • Design for long lifetime

Plant data

Feedstock:
Natural gas (NG), liquefied petroleum gas (LPG)
Product gas capacity:
350 to 1.200 Nm³/h
H2-content:
1 – 12 vol.-%
Delivery pressure*:
about 1,1 bar(abs)

* at exit oxygen VPSA unit; higher pressures on demand.

Typical applications for HN/HNX gas generation plants

  • Metallurgical industry (e.g. galvanizing, annealing)
  • Float glass industry
HNX gas generation
CO2 scrubber
CO shift for HNX gas generation
HNX gas dryer