Adsorbent, hydrogen production system, and hydrogen production method

Abstract

The application discloses a carbon dioxide adsorbent, a hydrogen production system and a method. The hydrogen production system comprises a reforming unit and a carbon capture unit, and a zirconium-nickel-oxygen ternary composite oxide adsorbent is arranged in the carbon capture unit. The mixed gas after decarburization is returned to the reforming unit to promote the forward progress of the reforming reaction. The system adopts gradient waste heat grading utilization, three-tower staggered peak linkage self-adaptive control, and is matched with a fuel cell level five-stage high-purity hydrogen purification and pressure stabilizing buffer unit. The adsorbent is high-temperature resistant to poison and cyclically stable, the hydrogen production system can stably produce fuel cell level high-purity hydrogen, the carbon capture unit can realize self-heating and self-humidification by using reforming waste heat and steam by-products, and the raw materials of the reforming unit can be preheated, the hydrogen production system can also recycle the captured carbon dioxide to make dry ice to supply cooling for a computing power center, and has the advantages of high efficiency, energy saving, low carbon and circulation.