非焦煤炼铁基本原理再研究及最理想工艺、装备的设想Ⅱ  

Future Study on the Basic Principle and the Imagination on the Ideal Technology and Equipment for Non-coking Coal Ironmaking Process( Ⅱ)

作　　者：郭汉杰[1,2] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]高端金属材料特种熔炼与制备北京市重点实验室,北京100083

出　　处：《冶金设备》2015年第6期1-9,59,共10页Metallurgical Equipment

摘　　要：利用还原需求和热量需求计算得到的铁氧化物碳还原最低碳素需求和CO2的最小排放,与某钢铁企业的月平均高炉煤气成分进行了对比,发现其内部反应已经非常接近热力学理论的平衡,要想进一步降低能耗是非常困难的;在高炉内部追求高的间接还原比例,即生成更多的CO2是没有意义的。通过设计的"煤制气-气基直接还原"工艺的热力学研究,找到了实现冶金过程由Fe2O3还原得到1t铁需要的理论最低能耗的工艺,碳素消耗225.36kg(其中还原剂碳161.15kg,发热剂碳为64.21kg)和O2消耗120m3。From reductant carbon and exothermal agent carbon two aspects,calculating the reaction thermodynamic the minimum carbon demand and CO2 emissions,and comparing this with month average ton iron blast furnace gas of some iron and steel enterprise,It have been found that the internal reaction inside blast furnace has been very close to the theoretical value of thermodynamics balance,and to further decrease the energy consumption is very difficult. Seeking for high indirect reduction rate inside the blast furnace,namely generating more CO2 is meaningless. Through the thermodynamics research on the design process of ＂coal gasified-gas-based direct reduction＂,the minimum energy consumption process in theory for gaining 1t iron from Fe2O3 reduction was found,which need carbon consumption 225. 36kg（ including reductant carbon 161. 15 kg,exothermal agent carbon 64. 21kg） and O2 consumption 120m^3.

关 键 词：非焦煤炼铁 炼铁能耗 煤制气—气基直接还原炼铁 

分 类 号：TF55[冶金工程—钢铁冶金]