Green vs fossil-based energy vectors: A comparative techno-economic analysis of green ammonia and LNG value chains

Restelli, Federica; Gambardella, Marta; Pellegrini, Laura Annamaria

doi:10.1016/j.jece.2023.111723

Cited by 5 publications

(1 citation statement)

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“…According to the H 2 SMR, hydrogen sulfide is converted to H 2 and carbon disulfide (CS 2 ) via reaction (5). Hydrogen holds considerable value due to its versatility and potential as a clean energy carrier, as its combustion does not generate CO 2 emissions [21]. As a clean alternative to traditional fuels, hydrogen can be employed in various applications, ranging from fueling vehicles and generating power to serving as a reducing agent in industrial processes.…”

Section: Hydrogen Sulfide Methane Reformationmentioning

confidence: 99%

Waste to H2 Sustainable Processes: A Review on H2S Valorization Technologies

Spatolisano,

Restelli,

Pellegrini

et al. 2024

Energies

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In the energy transition from fossil fuels to renewables, the tendency is to benefit from ultra-sour natural gas reserves, whose monetization was previously considered unviable. The increasing H2S content together with the growing concern about emissions that are harmful to the environment, make necessary the development of efficient strategies for pollutants management. Although large-scale H2S conversion is well-established through the Claus process, novel technologies for H2S valorization could be a reliable alternative for waste-to-valuable chemicals, following the circular economy. In this perspective, technologies such as Hydrogen Sulfide Methane Reformation (H2SMR), non-thermal plasma, photocatalytic decomposition, decomposition through cycles and electrolysis are analyzed for the H2 production from H2S. They represent promising alternatives for the simultaneous H2S valorization and H2 production, without direct CO2 emissions, as opposite to the traditional methane steam reforming. The various H2S conversion routes to H2 are examined, highlighting the advantages and disadvantages of each of them. This review focuses in particular on the most promising technologies, the H2SMR and the non-thermal plasma, for which preliminary process scheme and techno-economic analysis are also reported. Finally, the major research gaps and future developments necessary to unlock the full potential of hydrogen sulfide valorization as a sustainable pathway for hydrogen production are discussed.

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Section: Hydrogen Sulfide Methane Reformationmentioning

confidence: 99%