Blue hydrogen is produced through reforming natural gas with carbon capture and storage, achieving a reduction in the product hydrogen carbon intensity compared to its unabated equivalent. Autothermal reforming (ATR) is well suited to blue hydrogen production as the energy to drive the reforming reaction is provided by partial combustion of the process stream rather than burning natural gas outside of the process to sustain necessary reaction temperatures in furnace tubes of a Steam Methane Reformer (SMR). In an ATR process, the carbon is contained in a high-pressure CO2 stream making 95% capture rates economical. Johnson Matthey Davy Technologies LCHTM technology is fundamentally different from other blue hydrogen processes. Instead of simply raising steam, LCHTM technology recovers heat at the maximum possible quality using the Gas Heated Reformer (GHR), to provide energy for 30% of the reforming conversion. The total energy efficiency of blue hydrogen production in this configuration is increased, to be by around 88% of the comparable SMR technology with post combustion capture.
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