Faculty Profiles - MACHIDA, Hiroshi

Papers - MACHIDA, Hiroshi

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Quantitative Analyses of Chemical Structural Change and Gas Generation Profile of Coal upon Heating toward Gaining New Insights for Coal Pyrolysis Chemistry

Fukuoka Tetsuya, Takeda Norihiro, Zhang Lu, Machida Hiroshi, Zhang Wei, Watanabe Masahiko, Nishibata Yuko, Hayashi Jun-ichiro, Norinaga Koyo

ISIJ INTERNATIONAL Vol. 59 ( 8 ) page： 1376-1381 2019

An approach for quantifying transferable hydrogen in pyrolyzing coals

Norinaga K., Fukuoka T., Machida H., Zhang W.

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

Norinaga K., Nishio H., Khuyen T., Machida H.

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

Low temperature swing process for CO2 absorption-desorption using phase separation CO2 capture solvent

Machida Hiroshi, Ando Ryuya, Esaki Takehiro, Yamaguchi Tsuyoshi, Horizoe Hirotoshi, Kishimoto Akira, Akiyama Katsuya, Nishimura Makoto

INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL Vol. 75 page： 1 - 7 2018.8

Shear Viscosity and Heterogeneous Structure of Alkylaminoethanol-Based CO2 Absorbents

Yamaguchi Tsuyoshi, Ando Ryuya, Yoshida Koji, Yamaguchi Toshio, Machida Hiroshi

JOURNAL OF PHYSICAL CHEMISTRY B Vol. 122 ( 14 ) page： 4045-4050 2018.4

Degradation Test for Energy-Saving CO<inf>2</inf> Absorbent based on Phase Separation Type Solvent by Aqueous (Amine + Ether) Solution

Maeda N., Kishimoto A., Machida H., Yamaguchi T.

GHGT 2018 - 14th International Conference on Greenhouse Gas Control Technologies 2018

Language：English Publishing type：Research paper (scientific journal) Publisher：GHGT 2018 - 14th International Conference on Greenhouse Gas Control Technologies

The unique phase separation type amine/ether absorbent is expected to realize the CO2 separation process with low-energy consumption (1.5GJ/ton-CO2). In this study, a degradation test of the absorbent under thermal load of liquid regeneration was conducted in order to clarify 1) the behavior of its performance declination for CO2 capture and 2) the behavior of amine loss mainly caused by generation of by-product. The regeneration condition was chosen based on two assumptions that a) most likely to damage to the solution, which means high-oxidation atmosphere containing oxygen and sulfur oxide, and b) adopting actual operating temperature when absorbing or desorbing. As a result, only a small amount of the CO2 capture capability was lost through 48 hours cyclic thermal load of 50-90 °C. Consequently, it was found that the phase separation type solvent could be durable enough for the practical use. Besides, the running cost associated with make-up amine might be drastically reduced.

Scopus

Energy-saving CO<inf>2</inf> Capture Process Using Phase Separation Type Solvent by Aqueous (amine + ether) Solution

Machida H., Takehiro E., Yamaguchi T., Norinaga K., Kishimoto A., Akiyama K., Nishimura M.

GHGT 2018 - 14th International Conference on Greenhouse Gas Control Technologies 2018

Language：English Publishing type：Research paper (scientific journal) Publisher：GHGT 2018 - 14th International Conference on Greenhouse Gas Control Technologies

We have developed the phase separation solvent for CO2 capture. Our developed solvent consists amine, organic solvent and water and shows single liquid phase before CO2 absorption though it shows two liquid phases after CO2 absorption. Feature of phase separation solvent is reducing temperature difference between absorber and stripper. We apply the heat pump system for CO2 separation and evaluate the energy consumption. Low temperature swing process saves energy requirement for CO2 capture process with highly-effective reaction-heat recovering. To evaluate the CO2 capture system with our solvent, screening test for amine and organic solvent combination and CO2 solubility measurement were examined. In the phase separation test, three types of solvents were obtained by combining amine and ether, that is, no phase separation with CO2 scrubbing, phase separation with CO2 scrubbing, and thoroughly immiscible. The phase behaviour depends on the hydrophobicity of amines or organic solvents, and the types of solvents were classified using the hydrophobic parameter.

Scopus

Development of phase separation solvent for CO2 capture by aqueous (amine plus ether) solution

Machida Hiroshi, Oba Kazuki, Tomikawa Takashi, Esaki Takehiro, Yamaguchi Tsuyoshi, Horizoe Hirotoshi

JOURNAL OF CHEMICAL THERMODYNAMICS Vol. 113 page： 64-70 2017.10

過酸化水素の予熱条件が流通式メタン水熱部分酸化改質反応に与える影響 Reviewed

織田耕彦, 町田洋, 堀添浩俊

化学工学論文集 Vol. 43 ( 5 ) page： 342-346 2017.9

Partial Oxidation of Methane by Fenton Reaction under Hydrothermal Environment Reviewed

Yasuhiko ORITA, Hiroshi MACHIDA, Hirotoshi HORIZOE

Journal of the Japan Institute of Energy Vol. 96 ( 8 ) page： 339-345 2017.8

Phase Separation Solvent for CO2 Capture Reviewed

Hiroshi Machida, Takehiro Esaki, Kazuki Oba, Takashi Tomikawa, Tsuyoshi Yamaguchi, Hirotoshi Horizoe

Energy Procedia Vol. 114 page： 823-826 2017.7

Effect of Preheating Conditions of Hydrogen Peroxide on Flow-Type Hydrothermal Partial Oxidation of Methane

Orita Yasuhiko, Machida Hiroshi, Horizoe Hirotoshi

KAGAKU KOGAKU RONBUNSHU Vol. 43 ( 5 ) page： 342-346 2017

Biomass Pretreatment with Hydrothermal Explosion for Bioethanol Production Reviewed

Machida, Hiroshi Honda, Yurie Saito, Masahiro Horizoe, Hirotoshi

Vol. 96 ( 9 ) page： 386-392 2017

Hydrogen Peroxide and Carbon Dioxide Effect on Biomass Hydrothermal Treatment Reviewed

Hiroshi MACHIDA, Masahiro SAITO, and Hirotoshi HORIZOE

Journal of the Japan Institute of Energy Vol. 95 ( 639 ) page： 644 2016

Modeling of CO2 Solubility in Tertiary Amine Solvents Using pKa Reviewed

Hiroshi Machida, Hidetaka Yamada, Shin Yamamoto

Journal of Chemical & Engineering Data Vol. 61 page： 2144-2148 2016

CO2 Solubility Measurements and Modeling for Tertiary Diamines Reviewed

Hiroshi Machida, Hidetaka Yamada, Yuichi Fujioka, Shin Yamamoto

Journal of Chemical & Engineering Data Vol. 60 page： 814 2015

High efficiency metal removal from hexane-extracted algae oil using super and subcritical propane Reviewed

Hiroshi Machida, Hirotoshi Horizoe

Energy Conversion and Management Vol. 95 page： 90 2015

High pressure vapor liquid equilibria measurements and modeling of butane ethanol system and isobutane ethanol system Reviewed

H. Machida, K. Matsumura, H. Horizoe

Fluid Phase Equilibria Vol. 375 page： 176-180 2014.5

Production of 5-hydroxymethylfurfural from corn stalk catalyzed by corn stalk-derived carbonaceous solid acid catalyst Reviewed

Lulu Yan, Nian Liu, Yu Wang, Hiroshi Machida, Xinhua Qi

Bioresource Technology Vol. 173 page： 462 2014

Development of chemical CO2 solvent for high-pressure CO2 capture Reviewed

Shin Yamamoto, Hiroshi Machida, Yuichi Fujioka, Takayuki Higashii

Energy Procedia Vol. 37 page： 505-517 2013

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Papers - MACHIDA, Hiroshi