著者

郷原 巧 Ankit JAIN 松本 悟志 荒巻 徹 伊藤 順子 渡邉 信 野口 良造 中嶋 光敏 市川 創作

出版者

一般社団法人 日本エネルギー学会

雑誌

バイオマス科学会議発表論文集 第14回バイオマス科学会議 (ISSN:24238333)

巻号頁・発行日

pp.91-92, 2019-01-09 (Released:2019-01-09)

参考文献数

3

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Microalgal biocrude was produced by hydrothermal liquefaction (HTL) of native microalgae slurry using a bench-scale continuous flow tubular reactor. The native algae was harvested in an open raceway pond in Minamisoma city, Fukushima prefecture. The slurry of native algae was continuously injected to a tubular reactor by high-pressure pumps, and the temperature was increased gradually through preheating tubes. The slurry eventually reached the reaction tube, which was held at 350 °C and 19.5 MPa, where it was kept for 6 min. The yield of biocrude recovered in a tank No. 1 was 43.0 wt%. The higher heating value (HHV) of biocrude was 29.1 MJ/kg-dry (34.5 MJ/kg-daf) calculated by the chemical elements using Dulong's formula.

著者

菅澤 貢 吉廻 秀久 繁田 政治

出版者

一般社団法人 日本エネルギー学会

雑誌

バイオマス科学会議発表論文集 第14回バイオマス科学会議 (ISSN:24238333)

巻号頁・発行日

pp.1-2, 2019-01-09 (Released:2019-01-09)

参考文献数

2

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Bamboo forests mostly uncontrolled are spread nationwide in Japan and expanding the area with 3,000ha per year. Bamboo is growing rapidly but difficult to use as biomass because it contains harmful substances like potassium (K) and chlorine (Cl) which cause a fatal damage to boilers and a generation of carcinogenic Dioxins. HITACHI has developed an innovative reforming process, i.e. pulverizing and eluting to eliminate the above harmful substances which enables bamboo can be used as a typical wood-based biomass. And moreover, the waste liquid used for elution can be reused as a fertilizer realizing an environmentally friendly recycling scheme.