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Journal Articles

Quantitative evaluation of CO$$_{2}$$ emission reduction of active carbon recycling energy system for ironmaking by modeling with Aspen Plus

Suzuki, Katsuki*; Hayashi, Kentaro*; Kurihara, Kohei*; Nakagaki, Takao*; Kasahara, Seiji

ISIJ International, 55(2), p.340 - 347, 2015/02

 Times Cited Count:6 Percentile:54.39(Metallurgy & Metallurgical Engineering)

Use of the Active Carbon Recycling Energy System in ironmaking (iACRES) has been proposed for reducing CO$$_{2}$$ emissions. To evaluate the performance of iACRES quantitatively, a process flow diagram of a blast furnace model with iACRES was developed using Aspen Plus, a chemical process simulator. CO$$_{2}$$ emission reduction and exergy analysis were performed by using mass and energy balance obtained from simulation results. The following CO$$_{2}$$ reduction methods were evaluated as iACRES: solid oxide electrolysis cells (SOEC) with CO$$_{2}$$ capture and separation (CCS), SOEC without CCS, and a reverse water-gas shift reactor powered by a high-temperature gas-cooled reactor. iACRES enabled CO$$_{2}$$ emission reduction by 3-11% by recycling CO and H$$_{2}$$, whereas effective exergy ratio decreased by 1-7%.

Journal Articles

Process modeling of iACRES by ASPEN Plus and evaluation of the whole system

Hayashi, Kentaro*; Suzuki, Katsuki*; Kurihara, Kohei*; Nakagaki, Takao*; Kasahara, Seiji

Tanso Junkan Seitetsu Kenkyukai Saika Hokokusho; Tanso Junkan Seitetsu No Tenkai, p.27 - 41, 2015/02

Applying Active Carbon Recycling Energy System to ironmaking (iACRES) process is a promising technology to reduce coal usage and CO$$_{2}$$ emissions. To evaluate performance of iACRES quantitatively, a process flow diagram of the blast furnace model with iACRES was developed using Aspen Plus. CO$$_{2}$$ emission reduction and exergy analysis was predicted by using mass and energy balance obtained from the simulation results. The followings were investigated as iACRES: solid oxide electrolysis cells (SOEC) with CO$$_{2}$$ capture and separation (CCS), SOEC without CCS, and a reverse water-gas shift reactor as the a CO$$_{2}$$ reduction reactor powered by a high-temperature gas-cooled reactor. iACRES could provide CO$$_{2}$$ emission reductions of 3-11% by recycling CO and H$$_{2}$$, whereas the effective exergy ratio decreased by 1-7%.

Journal Articles

Hierarchical structure-property relationships in graft-type fluorinated polymer electrolyte membranes using small- and ultrasmall-angle X-ray scattering analysis

Tran Duy, T.*; Sawada, Shinichi; Hasegawa, Shin; Yoshimura, Kimio; Oba, Yojiro*; Onuma, Masato*; Katsumura, Yosuke*; Maekawa, Yasunari

Macromolecules, 47(7), p.2373 - 2383, 2014/04

 Times Cited Count:16 Percentile:38.22(Polymer Science)

The hierarchical structures of graft-type ETFE-based polymer electrolyte membranes (ETFE-PEMs) were investigated using small- and ultrasmall-angle X-ray cattering experiments. The ETFE-PEMs with IECs $$<$$ 2.4 mmol/g possessed conducting graft domains around lamellar crystals, with a d-spacing of 21.8-29.1 nm, and oriented crystallites with short and long correlation distances of 218-320 and 903-1124 nm, respectively. The membranes with IECs $$>$$ 2.7 mmol/g showed a new phase of crystallite network domains with a d-range of 225-256 nm, indicating a phase transition from oriented crystallite to crystallite network structures in the IEC range of 2.4-2.7 mmol/g. Noted that for the ETFE-PEMs with high IECs higher conductivity at 30% RH and compatible tensile strengths at 100% RH and 80 $$^{circ}$$ C, compared with Nafion, originated from the well-interconnected ion channels around the crystallites and the remaining lamellar crystals and crystallites, respectively.

Journal Articles

Performance improvement of fluoropolymer electrolyte membranes by radiation processing

Yamaki, Tetsuya; Asano, Masaharu; Yoshida, Masaru

Gekkan Eko Indasutori, 10(6), p.5 - 11, 2005/06

no abstracts in English

Journal Articles

Journal Articles

Development of highly proton-conductive membranes based on crosslinked fluoropolymers by radiation chemical methods

Yamaki, Tetsuya; Yoshida, Masaru

Nenryo Denchi, 4(3), p.73 - 78, 2005/01

no abstracts in English

Journal Articles

Polyelectrolyte membranes based on crosslinked polytetrafluoroethylene

Yamaki, Tetsuya; Asano, Masaharu; Yoshida, Masaru

Kogyo Zairyo, 51(4), p.39 - 42, 2003/04

no abstracts in English

Journal Articles

Extraction of europium(III) into W/O microemulsion containing aerosol OT and a bulky diamide, 1; Cooperative effect

Suzuki, Hideya*; Naganawa, Hirochika; Tachimori, Shoichi

Solvent Extraction and Ion Exchange, 21(4), p.527 - 546, 2003/03

 Times Cited Count:11 Percentile:55.04(Chemistry, Multidisciplinary)

no abstracts in English

Journal Articles

Journal Articles

Styrene grafted and sulfonated proton conducting membranes based on radiation-crosslinked polytetrafluoroethylene and their fuel cell applications

Yamaki, Tetsuya; Asano, Masaharu; Morita, Yosuke*; Suwa, Takeshi*; Yoshida, Masaru

Proceedings of 9th International Conference on Radiation Curing (RadTech Asia '03) (CD-ROM), 4 Pages, 2003/00

Proton exchange membranes were prepared by the radiation-induced grafting of styrene into crosslinked polytetrafluoroethylene (PTFE) films and subsequent sulfonation. The degree of grafting was controlled in the range of 7-75% by the crosslinking density of the PTFE matrix as well as the grafting conditions. The films at the grafting yield of $$geq$$ 30% were found to give the ion exchange membranes with a homogeneous distribution of sulfonic acid groups. The resulting membranes showed a large ion exchange capacity reaching 2.9 meq g$$^{-1}$$, which exceeded the performance of commercially-available perfluorosulfonic acid films such as Nafion. This will encourage the use of our ion exchange membranes in polymer electrolyte fuel cells.

Journal Articles

Development of fluoropolymer electrolyte membranes by using a radiation-induced crosslinking technique

Yoshida, Masaru; Yamaki, Tetsuya

Saishin Nenryo Denchi Buzai; Sono Saisentan Gijutsu To Shinraisei Hyoka, p.82 - 92, 2003/00

no abstracts in English

Journal Articles

Crosslinked fluoropolymer electrolyte membranes prepared by ionizing radiation

Yamaki, Tetsuya; Yoshida, Masaru

Zukai, Nenryo Denchi no Subete, p.117 - 119, 2003/00

no abstracts in English

Journal Articles

R&D for new thermo nuclear energy convergion technologies

Ishiyama, Shintaro

Nippon Genshiryoku Gakkai-Shi, 44(12), p.879 - 881, 2002/12

no abstracts in English

Journal Articles

Demonstration of fuel cleanup system consisting of electrolytic reactor and tubular reservoir tank for fusion reactors

Isobe, Kanetsugu; Imaizumi, Hideki*; Hayashi, Takumi; Konishi, Satoshi; Nishi, Masataka

Fusion Science and Technology, 41(3), p.988 - 992, 2002/05

no abstracts in English

Journal Articles

Development of polymer electrolyte membrane for fuel cell by radiation induced graft polymerization

Suwa, Takeshi; Morita, Yosuke

Hoshasen To Sangyo, (93), p.22 - 28, 2002/03

no abstracts in English

Journal Articles

Polymer electrolyte membrane for fuel cell produced by radiation

Suwa, Takeshi

Porima Daijesuto, 54(3), p.17 - 26, 2002/03

no abstracts in English

Journal Articles

Temperature-switchable vapor sensor materials based on ${it N}$-isopropylacrylamide and calcium chloride

Chen, J.; Yoshida, Masaru; Maekawa, Yasunari; Tsubokawa, Norio*

Polymer, 42(23), p.9361 - 9365, 2001/11

 Times Cited Count:30 Percentile:26.16(Polymer Science)

no abstracts in English

Journal Articles

Development of oxygen sensors using zirconia solid electrolyte for fuel rods

*; Endo, Yasuichi; Yamaura, Takayuki; Matsui, Yoshinori; Niimi, Motoji; Hoshiya, Taiji; Kobiyama, M.*; Motohashi, Yoshinobu*

JAERI-Conf 99-006, p.343 - 348, 1999/08

no abstracts in English

Journal Articles

Development of electrolytic reactor for processing of gaseous tritiated compounds

Konishi, Satoshi; Maruyama, T.*; *; *; *

Fusion Engineering and Design, 39-40, p.1033 - 1039, 1998/00

 Times Cited Count:7 Percentile:43.93(Nuclear Science & Technology)

no abstracts in English

56 (Records 1-20 displayed on this page)