Faculty Profiles - NORINAGA Koyo

Papers - NORINAGA Koyo

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An approach for quantifying transferable hydrogen in pyrolyzing coals Reviewed

Norinaga K

36th Annual International Pittsburgh Coal Conference: Clean Coal-Based Energy/Fuels and the Environment, PCC 2019 2019

Reducing energy required for CO<inf>2</inf> separation and recovery process by employing phase separation solvents Reviewed

Norinaga K

36th Annual International Pittsburgh Coal Conference: Clean Coal-Based Energy/Fuels and the Environment, PCC 2019 2019

An approach for quantifying transferable hydrogen in pyrolyzing coals Reviewed

Norinaga K

36th Annual International Pittsburgh Coal Conference: Clean Coal-Based Energy/Fuels and the Environment, PCC 2019 2019

Reducing energy required for CO<inf>2</inf> separation and recovery process by employing phase separation solvents Reviewed

Norinaga K

36th Annual International Pittsburgh Coal Conference: Clean Coal-Based Energy/Fuels and the Environment, PCC 2019 2019

Characteristics of gas evolution profiles during coal pyrolysis and its relation with the variation of functional groups Reviewed

Zhang, L, Qi, S, Takeda, N, Kudo, S, Hayashi, J, Norinaga, K

International Journal of Coal Science and Technology Vol. 5 ( 4 ) page： 452 - 463 2018.12

Effects of HZSM-5 on volatile products obtained from the fast pyrolysis of lignin and model compounds Reviewed

Yang Huamei, Norinaga Koyo, Li Ji, Zhu Wenyou, Wang Haijun

FUEL PROCESSING TECHNOLOGY Vol. 181 page： 207 - 214 2018.12

Prediction of hot coke oven gas reforming by LES coupled with the extended flamelet/progress variable approach Reviewed

Panlong Yu, Koyo Norinaga, Hiroaki Watanabe, Toshiaki Kitagawa

Fuel Vol. 231 page： 234 - 243 2018.11

Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Ltd

Large-eddy simulation (LES) coupled with the extended flamelet/progress variable approach (EFPV) has been performed to predict characteristics of reacting flows in a bench-scale hot coke oven gas (HCOG) reformer. In order to investigate the capability of capturing effects of operating conditions, simulations were carried out in two different cases in which the coke oven gas temperature and oxygen ratio were altered. Results showed that the LES coupled with the EFPV performed very well in terms of predicting temperature distribution as well as the temperature variation trend between the two cases. In addition, major species such as H2, CO, CO2, H2O and CH4, as well as minor species like benzene and some typical polycyclic aromatic hydrocarbons (PAH) were analyzed to illustrate their activities and dominant chemical events. With regards to the composition of the dry reformed gas, comparisons were made between the experimental data and the numerical simulation results, and reasonable results have been obtained. It has been confirmed that the general feature of the reacting flows in the HCOG reformer can be precisely captured by the present LES.

DOI： 10.1016/j.fuel.2018.05.104

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Characteristic Properties of Lignite to Be Converted to High-Strength Coke by Hot Briquetting and Carbonization Reviewed

Shinji Kudo, Aska Mori, Gentaro Hayashi, Takuya Yoshida, Noriyuki Okuyama, Koyo Norinaga, Jun-Ichiro Hayashi

Energy and Fuels Vol. 32 ( 4 ) page： 4364 - 4371 2018.4

Language：English Publishing type：Research paper (scientific journal) Publisher：American Chemical Society

A sequence of hot briquetting and carbonization (HBC) is a promising technology for the production of coke with a high mechanical strength from lignite, but factors affecting the coke strength have not yet been fully understood. The HBC cokes prepared from 12 lignites in this study showed diverse tensile strength (e.g., from 0.2 to 31.2 MPa in the preparation at 200 °C and 112 MPa for hot briquetting and 1000 °C for carbonization), and the coke strengths could not be explained by differences in commonly used structural properties of the parent lignites, such as elemental composition and contents of volatile matter/fixed carbon and ash. In this study, two methods were proposed for correlating the coke strength with the lignite properties, which employed the chemical structure analyzed by solid-state 13C nuclear magnetic resonance or the volumetric shrinkage during carbonization. A stronger coke was obtained from lignite that contained more aliphatic carbons (less aromatic carbons) or shrank more considerably. These characteristics contributed to intensified compaction of lignite in the briquetting and suppression of the formation of large pores, which are a cause of coke fracture. Two empirical equations, predicting the coke strength from the parameters of lignite properties, were established to be criteria for selection of lignite as HBC coke feedstock, although further investigation with more experimental data would be necessary for the validation.

DOI： 10.1021/acs.energyfuels.7b03155

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Computational Study on the Thermal Decomposition of Phenol-Type Monolignols Reviewed

Yuki Furutani, Yuki Dohara, Shinji Kudo, Jun-Ichiro Hayashi, Koyo Norinaga

International Journal of Chemical Kinetics Vol. 50 ( 4 ) page： 304 - 316 2018.4

Language：English Publishing type：Research paper (scientific journal) Publisher：John Wiley and Sons Inc.

A detailed chemical kinetic model has been developed to theoretically predict the pyrolysis behavior of phenol-type monolignol compounds (1-(4-hydroxyphenyl)prop-2-en-1-one, HPP
p-coumaryl alcohol, 3-hydroxy-1-(4-hydroxyphenyl)propan-1-one, HHPP
1-(4-hydroxyphenyl)propane-1,3-diol, HPPD) released from the primary heterogeneous pyrolysis of lignin. The possible thermal decomposition pathways involving unimolecular decomposition, H-addition, and H-abstraction by H and CH3 radicals were investigated by comparing the activation energies calculated at the M06–2X/6–311++G(d,p) level of theory. The results indicated that all phenol-type monolignol compounds convert to phenol by side-chain cleavage. p-Coumaryl alcohol decomposes into phenol via the formation of 4-vinylphenol, whereas HPP, HHPP, and HPPD decompose into phenol via the formation of 4-hydroxybenzaldehyde. The pyrolytic pathways focusing on the reactivity of the hydroxyl group in HPP and producing cyclopentadiene (cyc-C5H6) were also investigated. The transition state theory (TST) rate constants for all the proposed elementary reaction channels were calculated at the high-pressure limit in the temperature range of 300–1500 K. The kinetic analysis predicted the two favorable unimolecular decomposition pathways in HPP: the one is the dominant channel below 1000 K to produce cyc-C5H6, and the other is above 1000 K to yield phenol (C6H5OH).

DOI： 10.1002/kin.21164

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Transient three-dimensional simulation of densification process of carbon fibre preforms via chemical vapour infiltration of carbon matrix from methane

Tang Zhepeng, Li Aijun, Hatakeyama Tomo, Shuto Hiroki, Hayashi Jun-ichiro, Norinaga Koyo

CHEMICAL ENGINEERING SCIENCE Vol. 176 page： 107-115 2018.2

Theoretical Study on Elementary Reaction Steps in Thermal Decomposition Processes of Syringol-Type Monolignol Compounds

Furutani Yuki, Dohara Yuki, Kudo Shinji, Hayashi Jun-ichiro, Norinaga Koyo

JOURNAL OF PHYSICAL CHEMISTRY A Vol. 122 ( 3 ) page： 822-831 2018.1

Predicting molecular composition of primary product derived from fast pyrolysis of lignin with semi-detailed kinetic model

Furutani Yuki, Kudo Shinji, Hayashi Jun-ichiro, Norinaga Koyo

FUEL Vol. 212 page： 515-522 2018.1

Current situation and future scope of biomass gasification in Japan Reviewed

Furutani, Y, Norinaga, K, Kudo, S, Hayashi, J.-I, Watanabe, T

Evergreen Vol. 4 ( 4 ) page： 24-29 2017.12

Theoretical Study on the Kinetics of Thermal Decomposition of Guaiacol and Catechol

Furutani Yuki, Dohara Yuki, Kudo Shinji, Hayashi Jun-ichiro, Norinaga Koyo

JOURNAL OF PHYSICAL CHEMISTRY A Vol. 121 ( 44 ) page： 8495-8503 2017.11

An approach for on-line analysis of multi-component volatiles from coal pyrolysis with Li+ -attachment ionization mass spectrometry Reviewed

Zhang Lu, Qi Shi-Chao, Iwanaga Keita, Uemura Kazuhiro, Zhang Li-Xin, Kudo Shinji, Hayashi Jun-ichiro, Furuya Kenji, Norinaga Koyo

FUEL PROCESSING TECHNOLOGY Vol. 158 page： 141-145 2017.4

Theoretical Study on Hydrogenolytic Cleavage of Intermonomer Linkages in Lignin Reviewed

Qi Shi-Chao, Zhang Lu, Kudo Shinji, Norinaga Koyo, Hayashi Jun-ichiro

JOURNAL OF PHYSICAL CHEMISTRY A Vol. 121 ( 15 ) page： 2868-2877 2017.4

Theoretical Study on Reaction Pathways Leading to CO and CO2 in the Pyrolysis of Resorcinol Reviewed

Furutani Yuki, Kudo Shinji, Hayashi Jun-ichiro, Norinaga Koyo

JOURNAL OF PHYSICAL CHEMISTRY A Vol. 121 ( 3 ) page： 631-637 2017.1

Production of Levoglucosenone and Dihydrolevoglucosenone by Catalytic Reforming of Volatiles from Cellulose Pyrolysis Using Supported Ionic Liquid Phase Reviewed

Kudo Shinji, Goto Nozomi, Sperry Jonathan, Norinaga Koyo, Hayashi Jun-ichiro

ACS SUSTAINABLE CHEMISTRY & ENGINEERING Vol. 5 ( 1 ) page： 1132-1140 2017.1

Toward Low-Temperature Coal Gasiication: Experimental and Numerical Studies of Thermochemical Coal Conversion Considering the Interactions between Volatiles and Char Particles Reviewed

Li Cheng-Yi, Zhang Li-Xin, Kudo Shinji, Hayashi Jun-Ichiro, Norinaga Koyo

KONA POWDER AND PARTICLE JOURNAL ( 34 ) page： 70-79 2017

Nano-sized nickel catalyst for deep hydrogenation of lignin monomers and first-principles insight into the catalyst preparation Reviewed

Qi Shi-Chao, Zhang Lu, Einaga Hisahiro, Kudo Shinji, Norinaga Koyo, Hayashi Jun-ichiro

JOURNAL OF MATERIALS CHEMISTRY A Vol. 5 ( 8 ) page： 3948-3965 2017

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Papers - NORINAGA Koyo