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Title: Pilot-Plant Scale 12 kW Microwave Irradiation Reactor for Woody Biomass Pretreatment
Authors: HASEGAWA, Naoki
MITANI, Tomohiko  kyouindb  KAKEN_id  orcid (unconfirmed)
DAIDAI, Masakazu
SEGO, Hisayuki
WATANABE, Takashi  kyouindb  KAKEN_id
Author's alias: 長谷川, 直輝
三谷, 友彦
篠原, 真毅
渡邊, 隆司
Keywords: Microwave heating
permittivity measurement
finite element method
Issue Date: Oct-2014
Publisher: Institute of Electronics, Information and Communication Engineers(IEICE)
Journal title: IEICE Transactions on Electronics
Volume: E97.C
Issue: 10
Start page: 986
End page: 993
Abstract: A simple, low reflection, and highly-efficient pilot-plant scale microwave irradiation reactor for woody biomass pretreatment was fabricated. Pretreatment is an essential process for effective bioethanol production.The fabricated reactor consists of 8 microwave irradiators which are attached to a metal pipe. The woody biomass mixture which contains water and organic acid flows through the metal pipe and is heated by microwaves at a total power of 12 kW. To design the microwave irradiators, we used a 3D Finite Element Method (FEM) simulator, which was based on the measured complex permittivity data of the woody biomass mixture.The simulation results showed that the reflection coefficient |S11| from the reactor was less than -30 dB when the woody biomass mixture temperature was between 30°C and 90°C.Finally, we experimentally confirmed that the fabricated irradiation reactor yielded a microwave absorption efficiency of 79%.
Rights: © 2014 The Institute of Electronics, Information and Communication Engineers
DOI(Published Version): 10.1587/transele.E97.C.986
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