(310e) A Novel Photocatalytic Process for Electrification of Hydrogen Production By Steam Methane Reforming.
AIChE Annual Meeting
2021
2021 Annual Meeting
Fuels and Petrochemicals Division
Fuel Processing for Hydrogen Production
Tuesday, November 9, 2021 - 1:30pm to 1:50pm
This presentation will introduce an alternative process for electrifying the production of hydrogen via SMR while eliminating CO2 emissions. The heart of this process is a novel photocatalytic reactor that uses LEDâs to drive the reforming reaction in the presence of a plasmonic nanoparticle photocatalyst. A major benefit over the traditional design is the absence of any greenhouse emissions that originate from the combustion of natural gas; the only energy input required is electricity. As with a traditional process, the product of SMR is an admix of carbon oxides (both CO and CO2) and hydrogen along with leftover reactants. A water gas shift unit provided at the downstream of reformer converts CO to CO2 and hydrogen. An inhouse-designed pressure swing adsorption (PSA) system can produce fuel-cell grade hydrogen as a raffinate. The carbon dioxide from PSA extract can be separated out of the unreacted methane using a metal organic framework matrix (or similar). This CO2 is then further reacted with a split stream of the PSA raffinate (i.e., hydrogen) to produce methanol (a value-added chemical). Leftover methane is recycled back. Such a cascaded operation eliminates CO2 emissions.
References
- Green Hydrogen, A Guide to Policy Making, International Renewable Energy Policy, 2020.
- Hydrogen, Fuel and Technology, IEA, August 2020
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