#NetZero: Challenges and Opportunities of Firing Hydrogen in Process Heaters

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Tuesday, June 8th
9:30 – 11:30 a.m. (CET)

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  • Impact on installed burner design and their material selection
  • Safety aspects on furnace burner operation
  • Impact of high hydrogen fuel on radiant section efficiency
  • Numerical analysis of the heat distribution inside the furnace (CFD, test measurement data)
  • Pollutant emissions (CO, CO2, NOx, etc.)

Firing higher amounts of hydrogen in process heaters can reduce the overall CO2 emissions of a refinery to comply with upcoming restrictions on greenhouse emissions. Hydrogen has a lower heat release per unit volume, a higher adiabatic flame temperature, and a higher flame speed compared to other fuel gases. These characteristics have an important impact on the design of process burners as well as on the operation of process heaters.

Firing high amounts of hydrogen raises the combustion temperature and reduces the amount of flue gases. Both particularities impact the heat distribution within the heater (radiation/convection zone). This heat distribution, based on CFD results and experimental data, will be presented and discussed in this webinar. Also covered will be the need to carefully select burner materials to reduce maintenance work and the proper selection of burner type to ensure a high level of safety—both impacted by the elevated combustion temperature.

In addition to reduced CO2 emissions, CO and UHC emissions will be reduced by increasing the content of hydrogen in the fuel gas. A high amount of hydrogen leads to a reduction of prompt NOx and fuel NOx, but also to an increase of the thermal NOx. This non-trivial relation will be explained based on experimental data.

At the end of this webinar, you’ll have a greater understanding of the impact an increased hydrogen content in the fuel gas has on heater operation so you can confidently plan changes for firing high-hydrogen fuel.