title: Role of steel slags on biomass/carbon dioxide gasification integrated with recovery of high temperature heat.
abstract: Disposal of biomass in the agriculture and steel slags in the steel industry provides a significant solution toward sustainability in China. Herein these two sectors were creatively combined as a novel method, i.e., biomass/CO2gasification using waste heat from hot slags where the influence of chemical compositions of steel slags, characterized as iron oxide content and basicity, on gasification thermodynamics, was systemically reported for the first time. Both the target gases of CO, H2and CH4and the polluted gases of NH3, NO and NO2were considered. It was first found that an increasing iron content and slag basicity continuously improved the CO yield at 600-1000°C and 800-1000°C, respectively; while the effect on polluted gas releases was limited. Moreover, the solid wastes after gasification could be utilized to provide nutrients and improve the soil in the agriculture, starting from which an integrated modern system was proposed herein.
authors: Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing 100871, PR China.
authors: Yongqi
authors: Y
authors: Sun
authors: Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing 100871, PR China.
authors: Qianyi
authors: Q
authors: Liu
authors: Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing 100871, PR China.
authors: Hao
authors: H
authors: Wang
authors: School of Environmental Science and Engineering, South University of Science and Technology of China, Shenzhen 518055, PR China. Electronic address: zhangzt@sustc.edu.cn.
authors: Zuotai
authors: Z
authors: Zhang
authors: Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing 100871, PR China.
authors: Xidong
authors: X
authors: Wang
mesh_terms: D000383:Agriculture; D018533:Biomass; D002245:Carbon Dioxide / Q000032:analysis / Q000737:chemistry*; D002681:China; D005740:Gases / Q000737:chemistry; D006358:Hot Temperature; D062611:Solid Waste; D013232:Steel; D018505:Waste Management / Q000379:methods
chemical_list: D005740:Gases; D062611:Solid Waste; D013232:Steel; D002245:Carbon Dioxide
keywords: Biomass gasification; Chemical composition; Heat recovery; Steel slags; Syngas yields