Optimization of Operating Conditions for CO 2 Methanation Process Using Design of Experiments

Chae-Eun Yeo, Minhye Seo, Dongju Kim, Cheonwoo Jeong, Hye-Sun Shin and Suhyun Kim
Additional contact information
Chae-Eun Yeo: Plant Engineering Center, Institute for Advanced Engineering, Yongin 17180, Korea
Minhye Seo: Plant Engineering Center, Institute for Advanced Engineering, Yongin 17180, Korea
Dongju Kim: Plant Engineering Center, Institute for Advanced Engineering, Yongin 17180, Korea
Cheonwoo Jeong: Research Institute of Industrial Science and Technology (RIST), 187-12 Geumho-ro, Gwangyang-si 57801, Korea
Hye-Sun Shin: Research Institute of Industrial Science and Technology (RIST), 187-12 Geumho-ro, Gwangyang-si 57801, Korea
Suhyun Kim: Plant Engineering Center, Institute for Advanced Engineering, Yongin 17180, Korea

Energies, 2021, vol. 14, issue 24, 1-12

Abstract: In this study, the Taguchi experimental design method using an L16 orthogonal array was attempted in order to investigate the optimal operating conditions for the CO 2 methanation process in Ni-based catalysts. The relative influence of the main factors affecting CO 2 conversion and CH 4 yield was ranked as follows: reactor pressure > space velocity > reaction temperature. The optimal combination of operating conditions was a reactor temperature of 315 °C, a pressure of 19 bar, and a space velocity of 6000 h −1 . The effect of the H 2 /CO 2 ratio on CO 2 conversion and CH 4 yield was further considered under these optimal operating conditions. Moreover, the catalyst was characterized in order to investigate the production of coke through Brunauer–Emmett–Teller analysis, thermogravimetric analysis, and scanning electron microscopy. The amount of coke produced after the reaction for approximately 24 h was ~2 wt.%. Therefore, the desired CH 4 yield and long-term operational stability were successfully obtained using the Taguchi design method and catalyst characterization.

Keywords: CO 2 methanation; power to gas; Taguchi method; design of experiments; coking (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/14/24/8414/pdf (application/pdf)
https://www.mdpi.com/1996-1073/14/24/8414/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:14:y:2021:i:24:p:8414-:d:701624

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().