CH3OH as H2 carrier solves the risk of an unstable energy supply. CH3OH is used for H2 transportation and international trade to supply in demanding areas (Taiwan) with insufficient renewable energy, thus improving the stability and resilience of energy. Key technologies include CO2 hydrogenation, CH3OH reforming and CO2 recovery, and high-efficiency H2 storage and transport. We establish H2 storage and production chain to achieve energy security, international trade, and low-carbon goals.

A hydrophobic catalyst can hydrogenate CO2 to CH3OH at mild pressure, exceeding the yield of CH3OH reported in the literature. Green HydroTec demonstrated CH3OH reforming for H2 production and obtained high-purity H2 by PSA. We combine the technologies of methanol reforming to produce H2 and purification, then design an optimal process for H2 production, H2 purification, CO2 recovery/ liquefaction. The costs and energy consumption are evaluated to establish a supply chain of H2 energy carriers.

We construct a supply chain for distance transportation of renewable H2 and international trades to achieve sustainable low-carbon technology system by CH3OH as H2 carrier. This system includes CH3OH reforming to H2, and CO2 hydrogenation to CH3OH, that can also be operated independently to provide companies with an on-time and stable source of H2, or for power generation, as well as CO2 recycling to reduce carbon emissions. Therefore, we can provide company the choices for energy requirement.