Developmental Scientific Research For Carbon Recycling System with Waste Heat With Ferrites

铁氧体余热碳回收系统的科学研究进展

• 批准号: 06558067
• 负责人: TAMAURA Yutaka
• 金额: $ 10.62万
• 依托单位: TOKYO INSTITUTE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06558067/
• 关键词: Ni (II) -ferrite; CBNF; praseodymium oxide; oxygen release; heat; chemical energy conversion; endothermic process; carbon recycling system; H_2; 熱交換器; 水素発生; 化学エネルギー変換; 酸素分圧; 炭素循環; メタン化反応; 廃熱

1. Manufacture and operation of heat/chemical energy conversion device.A heat/chemical energy conversion device was manufactured and operated for measuring the heat conversion efficiency using the O_2 release reaction with CBNF (carbon bearing Ni (II) -ferrite). The conversion efficiency with CBNF was poor, since its O_2 releasing rate was too slow. To see the heat/chemical conversion efficiency of the device, the conversion efficiency with the praseodymium oxide was measured at 400ﾟC,and it was found that this device can work as a heat/chemical energy conversion system using the lattice oxygen release reaction at the lower temperature around 300-400ﾟC.2. Improvement of the heat/chemical energy conversion efficiency.To improve the heat/chemical energy conversion efficiency, a new system (combined cycle of 1st- and 2nd- Redox Systems), by which the heat/chemical energy conversion efficiency can be amplified, was designed. The 2nd Redox System can absorb the small amount of O_2 gas released from the 1st Redox System and accumulate the O_2 gas by repeating the 1st Redox System several times. The accumulated O_2 gas can be released by passing a low O_2 content gas at 300-400ﾟC,and can absorb the heat by the endothermic process. To prove this concept, a device specially designed was made using the praseodymium oxide as a material in the 2nd Redox System. This device worked according to the concept, and the combined cycle of 1st- and 2nd- Redox System was practically proved.3. Manufacture and operation of carbon recycling system with waste heat.A carbon recycling system, which converts CO_2 to methane using the H_2 generated by waste heat/chemical energy conversion system, was manufactured. This system can concentrate and separate the CO_2 from flue gas and produce a CH_4-rich (90%) gas. Based on the data obtained in the operation of this system, a new system which includes a new concept of 2nd-Redox System for heat/chemical energy conversion system, was designed.

1. 热能/化学能转换装置的制造和操作。利用O_2与含碳Ni (II) -铁氧体（CBNF）的释放反应，研制了热能/化学能转换装置，测量了热能转换效率。CBNF的O_2释放速度太慢，转化效率较差。为了考察该装置的热/化学转化效率，在400 C时测量了氧化镨的转化效率，发现该装置可以在300-400 C左右的较低温度下使用晶格氧释放反应作为热/化学能量转换系统。提高热能/化学能转换效率。为了提高热化学能的转换效率，设计了一氧化还原系统和二氧化还原系统的联合循环，提高了热化学能的转换效率。第二次氧化还原系统可以吸收第一次氧化还原系统释放的少量O_2气体，并通过多次重复氧化还原系统积累O_2气体。在300-400℃的温度下，通过低氧气体释放积聚的O_2气体，并通过吸热过程吸收热量。为了证明这一概念，在第二个氧化还原系统中使用氧化镨作为材料专门设计了一个装置。该装置按设想工作，一、二氧化还原系统的联合循环得到了实践证明。余热碳回收系统的制造与运行。研制了利用余热/化学能转换系统产生的H_2将co2转化为甲烷的碳循环系统。该系统能将烟气中的CO_2浓缩分离，生成富ch_4（90%）的烟气。根据该系统的运行数据，设计了一个包含热/化学能转换系统的二次氧化还原系统新概念的新系统。

项目成果

M.Ysuji,T.Wada,T.Yamamoto,T.Sano and Y.Tamaura:"CO2 decomposition by metallic phase on oxygen-deficient Ni (II)-bearing ferrite" J.Mater.Sci.Lett.,. 15. 156-158 (1996)

M.Ysuji，T.Wada，T.Yamamoto，T.Sano 和 Y.Tamaura：“缺氧 Ni (II) 轴承铁氧体上金属相的 CO2 分解”J.Mater.Sci.Lett.,。

Masamichi TSUJI, Takayuki TOGAWA, Yuuji WADA, Taizo SANO and Yutaka: "Kinetic Study for Formation of Cation‐Excess Magnetite" J.Chem.Soc.Faraday Trans. 91(10). 1553-1538 (1995)

Masamichi Tsuji、Takayuki TOGAWA、Yuuji WADA、Taizo SANO 和 Yutaka：“阳离子过量磁铁矿形成的动力学研究”J.Chem.Soc.Faraday Trans 91(10)。

T.Yoshida, H.Kato, M.Tsuji and Y.Tamaura: "Effect of platinum impregnationonto magnetite or Ni (II) -bearing toward the methanation of CO2" Proc.of Int.Sym.on Environmental Issues, on Ceramics 19-20,1994. 139-144 (1995)

T.Yoshida、H.Kato、M.Tsuji 和 Y.Tamaura：“Effect of Platinum impregnationonto Magnetite or Ni (II)-bearing对CO2甲烷化的影响”Proc.of Int.Sym.on环境问题，陶瓷19-

M.Tabata,H.Kato,M.Tsuji and Y.Tamaura: "Decomposition of CO2 to carbon using oxygen-deficient Zn (II)-bearing ferrite," Mater.Res.Soc.Proc.,. 344. 157-162 (1994)

M.Tabata、H.Kato、M.Tsuji 和 Y.Tamaura：“使用缺氧的含 Zn (II) 的铁氧体将 CO2 分解为碳”，Mater.Res.Soc.Proc.,。

M.Tsuji T.Togawa,Y.wada,T.Sano,and Y.Tamaura: "Kinetic study for the formation of cation-excess magnetite," J.Chem.Soc,Faraday Trans.,. 91[10]. 1533-1538 (1995)

M.Tsuji T.Tokawa、Y.wada、T.Sano 和 Y.Tamaura：“阳离子过量磁铁矿形成的动力学研究”，J.Chem.Soc，Faraday Trans.，。