Blue hydrogen: Autothermal Reforming hydrogen In the Autothermal Reforming
In order to mitigate the emissions of CO and CO2 from the process, and to make the hydrogen low carbon in nature, the CO2 must be recovered and stored. Figure 2 [21]
(ATR) process [20], a desulfurized hydrocarbon feedstock such as natural gas, refinery off gas, pre- reformed gas, Fischer-Tropsch tail-gas, Liquefied Petroleum Gas (LPG) or naphtha, is pre-heated and potentially pre-reformed before entering the ATR reactor at 30 to 100 barg via a burner. In the ATR reactors, the feed gas reacts with oxygen (partial combustion) and steam to produce a mixture of CO, CO2 and hydrogen (synthesis gas or syngas). The gas stream is cooled in a process gas boiler, generating high-pressure steam which can be exported to other industrial units or used for power generation. The syngas can either be used in further chemical manufacturing steps, or the components can be separated into pure hydrogen, CO and CO2 in a similar way to the SMR methodology above.
"In Autothermic Reforming hydrogen reactors, feed gas reacts with oxygen and steam to produce a carbon monoxide, carbon dioxide and hydrogen."
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