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

1.热/化学能转换装置的制造和运行利用CBNF（碳载镍（II）-铁氧体）的释氧反应，制造并运行了热/化学能转换装置，用于测量热转换效率。CBNF的O_2释放速率太慢，转化效率很低。为了观察器件的热/化学转换效率，在400 ° C下测量了使用氧化镨的转换效率，并且发现该器件可以在约300-400 ° C的较低温度下使用晶格氧释放反应作为热/化学能转换系统工作。为了提高热能/化学能转换效率，设计了一种新的系统（一级氧化还原系统和二级氧化还原系统的联合循环），通过该系统可以放大热能/化学能转换效率。第二氧化还原系统可以吸收第一氧化还原系统释放的少量O_2气体，并通过重复第一氧化还原系统多次来积累O_2气体。通过300-400 ° C的低O_2含量气体，可以释放积聚的O_2气体，并通过吸热过程吸收热量。为了证明这一概念，在第二氧化还原系统中使用氧化镨作为材料制作了一个专门设计的装置。该装置按此原理工作，并对一、二级氧化还原系统联合循环进行了实际验证.余热炭回收系统的制造与运行利用余热/化学能转化系统产生的H2，制造了一套将CO2转化为甲烷的炭回收系统。该系统可将烟气中的CO_2进行浓缩分离，并产生富含CH_4（90%）的气体。在此基础上，设计了一种新的系统，其中包括一个新的概念，第二氧化还原系统的热/化学能转换系统。

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.