本发明公开了一种还原气循环利用的氢冶金系统及方法，属于冶金炼铁技术领域，包含还原气制备与循环系统及氢冶金竖炉炼铁系统。还原气制备与循环系统包括水制氢气设备、加热器、净化器、冷却气回收装置等；氢冶金炼铁系统包括储料仓、布料装置、竖炉本体、排料装置等。本发明采用纯H<subgt;2</subgt;作为还原气，进入竖炉与球团矿进行还原反应；炉顶气在预热球团矿后进入循环系统循环利用；低温H<subgt;2</subgt;作为冷却气进入冷却段，对高温还原铁直接进行冷却，经过冷却气回收装置，和炉顶气混合，进入储料仓对球团矿进行预热。本发明具有气体分布均匀、炉料布置均匀、还原气利用率高、排放和能耗低等优点。

The present invention discloses a hydrogen metallurgical system and method for the cyclic utilization of reducing gas, belonging to the field of metallurgical ironmaking technology, including a reduction gas preparation and circulation system and a hydrogen metallurgical shaft furnace ironmaking system. The reduction gas preparation and circulation system includes water to hydrogen equipment, heaters, purifiers, cooling gas recovery devices, etc; The hydrogen metallurgical ironmaking system includes a storage bin, a distribution device, a shaft furnace body, and a discharge device. The present invention adopts pure H<subgt; 2</subgt; As reducing gas, it enters the shaft furnace and undergoes a reduction reaction with the pellet ore; The furnace top gas enters the circulation system for recycling after preheating the pellets; Low temperature H<subgt; 2</subgt; As cooling gas, it enters the cooling section to directly cool the high-temperature reduced iron. After passing through the cooling gas recovery device, it is mixed with the furnace top gas and enters the storage bin to preheat the pellets. The present invention has the advantages of uniform gas distribution, uniform furnace material arrangement, high utilization rate of reducing gas, low emission and energy consumption, etc.