- 著者
- 村田 博敏 土中 夏樹 水野 諭 サンチェス エドムンドJr. 難波 邦彦 井田 民男
- 出版者
- 一般社団法人 スマートプロセス学会 (旧高温学会)
- 雑誌
- スマートプロセス学会誌 (ISSN:2186702X)
- 巻号頁・発行日
- vol.3, no.5, pp.276-282, 2014-09-20 (Released:2015-08-01)
- 参考文献数
- 8
- 被引用文献数
- 4 10
In recent years, the development of bio-energy in cooperation with an ASEAN country is a very important issue for both participating countries, which would be able to build a win-win relationship. ASEAN countries have a large amount of unused biomass resources. However, raw biomass business does not seem to work well based on experience unless a new technology is introduced. The Bio-coke (referred to as BIC) is a domestic energy technology in Japan. In this study, Bio-coke made from unused resources of fruits that are imported in large quantities from ASEAN countries is being focused. The compressive strength measured for Banana peel Bio-coke was 98.4 MPa at initial moisture of 1.81 mass% while the Orange peel Bio-coke measured 167.0 MPa at initial moisture of 0.52 mass%. Meanwhile, the apparent Yang's modulus ratio based on cool compressive test for the former is about 4.0 GPa and 4.5GPa for the latter. Through hot compressive test at 973 K, 8 MPa was recorded for Banana peel Bio-coke and about 4.2 MPa for Orange peel Bio-coke.
1 0 0 0 OA バイオ新固形エネルギー:バイオコークスによる超緩慢燃焼分野を拓く
- 著者
- 井田 民男
- 出版者
- 一般社団法人 日本燃焼学会
- 雑誌
- 日本燃焼学会誌 (ISSN:13471864)
- 巻号頁・発行日
- vol.57, no.181, pp.214-221, 2015 (Released:2018-01-26)
- 参考文献数
- 7
- 被引用文献数
- 1
Currently, various energies such as fossil fuels and nuclear power are considerable expenditures. Resource depletion and environmental issues are taking place by activation of various problems and economic activity due to population growth in developing countries. However, in order for society to develop, energy, such as natural energy, is required have been studied for this purpose. We are grappling with new solid bioenergy development named Biocoke. This Biocoke has new solid fuel characteristics with high density and high compressive strength. Firstly, this article reported on new bio-solid fuel which has different density and observed its combustion phenomenon. Through the observation of combustion for bio-solid fuel with different density from 0.8∼1.4 g/cm3, we quantitatively derived ignition limit of biosolid fuel about the difference of density. Thus, we confirmed time continuing the flame and char combustion and observed the situation of spread of combustion into the inside of solid fuel. Finally, Kinki University launched the Great East Japan Earthquake Reconstruction Support Office in August 2012. Its two main themes are of the reconstruction assistance "From Zero to Plus" and rehabilitation support from the disaster of "To Zero from Minus". We suggested that Biocoke is stabilized for a long time from various data. Especially, we was carried to the dissolution test into water from Biocoke including of adhere radioactive Cs-147. Emission of radioactive material from Biocoke reduced until 25%.
1 0 0 0 OA 高圧縮固体バイオマス燃料の燃焼利用
- 著者
- 伊東 弘行 酒井 雄人 井田 民男 藤田 修
- 出版者
- 一般社団法人 日本燃焼学会
- 雑誌
- 日本燃焼学会誌 (ISSN:13471864)
- 巻号頁・発行日
- vol.53, no.164, pp.63-68, 2011 (Released:2018-01-26)
- 参考文献数
- 14
Utilization of biomass fuel is attracting more attention due to its advantage to the global warming problem. Biocoke (BIC), highly densified biomass briquette, has unique features such as economical advantages for its versatility of biomass resources, high volumetric calorific value because of its high density and high mechanical strength. The BIC made of Reynoutria japonica (Japanese knotweed), cylindrical blocks with 48 mm in diameter and 85 mm in length, are selected in the study. To investigate the fundamental thermal and combustion properties of the BIC, ignition and combustion behaviors are observed in the hot air flow. The results show that the ignition mode and the mass loss rate during the flaming combustion are influenced by the supplied air temperature with an interesting manner. This may be ascribed to the thickness of the heated layer inside the BIC depending on the preheating condition. This is because the heated thickness strongly controls the evolution characteristics of pyrolysis gas and the temperature distribution inside the BIC depends on the distinctive property of the BIC, high density. Finally, a new concept of BIC combustion method is proposed considering the BIC unique physical features as well as its fundamental combustion characteristics.
微視的な拡散燃焼過程の理解は,流れと燃焼反応の相互作用からなる燃焼挙動の定常性を定量化する上で重要である。微視的な拡散燃焼過程を研究するには,分子レベルでの燃焼反応による挙動と分子拡散による流れの条件との相互関連を定量的に理解することが重要となる。同時に微視的な定常拡散燃焼過程を造りだすことは,それらの条件の整合性を見出せる可能性を含んでいる。本研究で開発されたシングル・マイクロフレームでは、分子拡散作用と燃焼反応現象との微視的な燃焼メカニズムに基づく性状を定量的に把握することができた。次のステップとして開発されたダブル・マイクロフレームでは、異なる燃料種における微視的な燃焼過程の変化を可視化することができた。1つの興味ある現象は、アウターバーナ(OB)によって形成された半球状の水素拡散燃焼場にインナーバーナ(IB)よりアセチレン燃料を微流量を供給することにより、輝炎発光の発生制御が可能となり、水素拡散火炎の半球状の極点からのみ輝炎発光が生じ出すことが明らかとなった。本研究では、微視的な燃焼過程を究めるために分子レベルでの拡散作用と燃焼反応が非対称かつ非定常な燃焼過程を実現できる微視的な燃焼場を造りだした。この微視的な燃焼場は、非同軸のバーナで,OBで形成された定常な拡散火炎内においてIBにより分子数千個のオーダで任意の位置から燃料が供給され形成される。結果次のような成果を得た。1)微視的な定常拡散燃焼場において、ススの生成過程である輝炎発光がマイクロフレームの半球状の極点で発生するメカニズムは、拡散燃焼場が軸対称であることが必要条件であることが示唆された。2)フレキシブル・ダブルマイクロフレームによって形成される非対称燃焼場では、輝炎発光像が不定位置でかつ非周期で発生することが定量的に明らかとなった。
