成果報告書詳細
管理番号20160000000196
タイトル*平成27年度中間年報 水素利用等先導研究開発事業 エネルギーキャリアシステム調査・研究 高効率メタン化触媒を用いた水素・メタン変換
公開日2016/12/23
報告書年度2015 - 2015
委託先名日立造船株式会社
プロジェクト番号P14021
部署名新エネルギー部
和文要約
英文要約Advancement of Hydrogen Technologies and Utilization Project / Analysis and Development on Hydrogen as an Energy Carrier / Hydrogen conversion to methane by using catalyst having high activity for methanation (FY2014-FY2018), FY2015 Annual Report, Hitachi Zosen Corporation.

This present study aims to investigate feasibility on methanation system from
renewable hydrogen and CO2 as a solution for the problems which are;
1) long distance between consuming region and suitable place of renewable energy,
2) increasing in surplus energy generated by mismatch between supply and demand
with increasing in renewable energy.

1. Feasibility study on total energy efficiency of the methanation systems
In FY2015, in order to evaluate a durability of the catalyst, the methanation reaction
test as a bench scale with feeding the mixture gas of 80%-H2 and 20%-CO2 had been
carried out continuously. In spite of the high temperature condition (550 deg.C), the
degradation of catalytic activity was not observed after 1 year operation. However, it
must be taken into consideration that the actual CO2 resources contain a small amount
of poisoning materials such as sulfur components. Therefore, another durability tests
will be performed using above feed gas with some contaminations in FY2016 for more
understanding of the endurance.

2. Optimization of methanation system
Based on the results of simulation and process design in FY2014 and FY2015 a pilot
scale methanation plant was constructed and tested with 30 Nm3/h flow of feed gas (H2
24 Nm3/h, CO2 6 Nm3/h). As a result of the test, the methanation conversion rate was
99.8% at maximum, we succeeded that almost H2 converted (residual H2 in the outlet
gas; 1.7%, Target below 5%). The recovery rate of reaction heat was 70.4% that was
also quite higher than our target 35%.
Through the above demonstration tests, we found that it was possible to increase
further system performance with optimization of system components and operating
condition such as heat exchanger, pressure and temperature. Consequently, in
addition to the optimization of system components, the verification test will be carried
out in order to evaluate impact on the methane synthesis of hydrogen variation due to
volatile renewable energy in FY2016.
    
3. Meeting with the Institute of Applied Energy for system realization
To realize methanation system, the meetings with the Institute of Applied Energy were
held in May 12 and June 2, 2015.
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