Establishment of sustainable electric power supplement system by system design tool using EUD

利用EUD系统设计工具建立可持续电力补充系统

基本信息

批准号：
17310021
负责人：
TAKESHITA Kenji
金额：
$ 5.25万
依托单位：
Tokyo Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2006
项目状态：
已结题

项目摘要

In this study, we proposed the PEACE (Peaceful East-Asia Centered Electricity) Network to supply the electricity stably in the East Asia region. Hydroelectric power and low quality natural gas was used as primary energy source. Hydrogen gas was produced by the electrolysis of water and DME (dimethylester) was produced by the catalytic reaction process with low quality natural gas and hydrogen gas. DME was used as an energy-transfer material, which is suitable for the long-distance transfer of energy. For the establishment of PEACE network, the development of reasonable DME synthesis process is required. The conventional DME synthesis systems (direct synthesis and methanol dehydration) were analyzed by EUD (Energy Utilization Diagram) method and the improvement of these systems was discussed. From these results, a new DME synthesis system using hydrogen and oxygen generated by the electrolysis of water was proposed.The methanol dehydration system was complicated, but both energy and exe … More rgy efficiencies were larger than those of direct synthesis system. This is because the carbon conversion yield is higher than that of direct method. The methanol dehydration system is more excellent than the direct synthesis system. From these results, we proposed a new DME synthesis system with high reaction conversion, in which the methanol synthesis column was divided to 5 columns and the pressure and temperature of these columns were optimized. As a result, the carbon conversion yield was increased to 99.5% and the exergy loss per 1mol DME production was reduced up to 60% of that for the direct synthesis and 40% of that for the methanol dehydration system.A chemical-looping combustor was developed and operated by a pilot-scale reactor. The chemical-looping combustion system can separate CO_2 from the outlet gas without any additional energy. In this system, two reactors are used to perform the combustion. In the reduction reactor, the reduction of metal by the fuel gas is performed, and the oxidation of the reduced metal by the air is performed in the oxidation reactor. A Fe_2O_3-AI_2O_3 composite powder is used as oxygen-transfer material between the reduction column and oxidation column. By the improvement of the separation of composite powder and gas in the reduction column, high CO_2 recovery more than 90% was attained successfully. Less

在这项研究中，东亚宁静的电力网络在东亚地区稳定。由低四级天然气和转移材料的催化反应，适合于建立和平网络的长距离转移通过EUD（能量利用图）分析了DME合成系统，并使用氢和氧气和EXE讨论了THESEMS的改进。直接方法比直接合成系统更高的甲醇系统碳转化率提高到99.5％，对于直接合成，每1mol DME产生的自行量损失降低了60％，而甲醇脱水系统的40％降低了。在该系统中，没有任何adtioner的tlet气体，在还原器中进行了两个反应器，并在氧化反应器中进行了燃料气的还原通过改善复合粉末和气体的分离，将氧气转移的材料作为氧气转移