• What are the most attractive long-term options for incorporating autothermal reforming (ATR) and/or partial oxidation (POX) to produce blue hydrogen at near-zero CO2 emissions? Or can CO2 emissions from SMR units be further reduced?



  • Scott Miller, Honeywell UOP/Ortloff Engineers, scott.a.miller@honeywell.com

    Current SMR units can reduce CO2 emissions from on-site hydrogen production by approximately 60% through the addition of pre-combustion carbon capture to an existing SMR unit and by over 90% by adding post-combustion carbon capture to an existing unit, which significantly reduces the process Scope 1 emissions.

    When designing a new unit and leveraging ATR or POX technology with carbon capture to produce hydrogen, over 98% of the CO2 emissions from the process can be captured. These technologies are, therefore, very attractive when minimising Scope 1 emissions is critical, which will be driven by policies focused on reducing the carbon intensity of hydrogen production. ATR and POX also typically benefit from economies of scale, making them the most economical way to produce lower-carbon hydrogen in large quantities as demand for hydrogen grows.