2 results about "Thermochemical cycle" patented technology

This invention discloses a nuclear power generation and hydrogen production integrated utilization system, relating to the field of nuclear power hydrogen production technology. The key technical point is that by simultaneously distributing the high-temperature thermal energy of a molten salt reactor to a supercritical carbon dioxide Brayton cycle power generation system and a three-step vanadium-chlorine thermochemical cycle hydrogen production system, a new parallel-coupled, cascaded energy conversion architecture is constructed. This fundamentally overcomes the drawback of mismatch between heat grade and energy demand in traditional series-type nuclear power integrated utilization schemes. This design not only enables efficient power generation from high-temperature thermal energy and gentle hydrogen production from mid-temperature thermal energy, but also achieves deep recovery of waste heat through an internal heat exchange network, significantly improving the overall energy utilization efficiency of the system. The invention demonstrates significant technological progress in improving energy utilization efficiency, reducing production costs, and decreasing carbon emissions, providing a practical technical path for the multi-product integrated utilization of nuclear energy and large-scale green hydrogen production.

A process for producing hydrogen, sulfuric acid, and sulfur dioxide (SO2) utilizes the Sulfur-Iodine (S—I) thermochemical cycle. Acid gases, typically processed in sulfur recovery units, are combusted in an acid gas burner with air, enriched air, or oxygen, without fuel gas, to produce SO2. Iodine facilitates hydrogen production.A portion or all of the acid gases are directed to the burner in accordance with the present invention. The process reduces SO2 and CO2 emissions, with produced SO2 used for fertilizer production and CO2 sent for removal or CO2 liquefaction.The generated hydrogen supplies facility needs, such as hydrotreaters, reducing external imports and operating costs.