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Materials Considerations in Hydrogen Production

Materials Considerations in Hydrogen Production. For ICHS 2007. Highlights. Our background/experience in Hydrogen Degradation of steel materials, general Other materials Knowledge – Best Practice Sum-up. Herøya industrial site, Porsgrunn. Background Hydrogen. Experience

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Materials Considerations in Hydrogen Production

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  1. Materials Considerations in Hydrogen Production For ICHS 2007

  2. Highlights • Our background/experience in Hydrogen • Degradation of steel materials, general • Other materials • Knowledge – Best Practice • Sum-up

  3. Herøya industrial site, Porsgrunn

  4. Background Hydrogen • Experience • Production, Handling and Storage • Electrolysis, Steam reforming, Electrolysers • Incidents • CO2-line • Ammonia plant • Hydrogen out of control

  5. Hydrogen in Porsgrunn

  6. Metallic Materials for Hydrogen • Stress above yield • Sound structure without transformation (austenite) • Limited strength/stress level • Design • Environmental Factors (non-H2) • External environment (chlorides) • Production environment (lye, temperature, other..) • ppm-elements (oxygen, fluorides, other..) SCC in lye

  7. Corrosion due to environment

  8. Other materials • Composites (storage) • Diffusion • Fatigue • Based on natural gas standards • Seals/packings • Plastic materials • Rubber materials

  9. Knowledge • Standards, recommendations, best practice • Based on natural gas • Several sources – standardisation • Databases for incident reporting • API – Nelson • Collection of data and evaluation is important • Ownership of databases, follow-up

  10. Sum-up • Most incidents in the hydrogen business are not directly related to hydrogen compatibility of materials. • External environment may give unexpected degradation of materials. • Variations in process conditions may have large consequences upon materials selection. • Focus on trace elements in production, transportation and storage of hydrogen. • Be aware of established knowledge. • Further develop recommended practice based on databases.

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