Gasification of the Char Residues with High Ash Content by Carbon Dioxide

Junjie Xue, Zhen Dong (), Hao Chen, Mengyuan Zhang, Yufeng Zhao, Yanpeng Chen and Shanshan Chen
Additional contact information
Junjie Xue: PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China
Zhen Dong: PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China
Hao Chen: PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China
Mengyuan Zhang: PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China
Yufeng Zhao: PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China
Yanpeng Chen: PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China
Shanshan Chen: PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China

Energies, 2024, vol. 17, issue 17, 1-35

Abstract: To increase the carbon conversion of char in gasification, this paper aimed to reveal the gasification behaviours of char residues. Char residues with different ash contents in this work were prepared from Shenmu char and Tejing char. Those char residues were gasified by different CO 2 gas mixtures at different temperatures. The gasification process of char residue was different from the end stage of the gasification process of the corresponding raw char: the gasification rate of the char residue increased at first and then decreased, whereas the gasification rate of the corresponding raw char kept decreasing during the end stage of gasification. The highest gasification rate was achieved at a lower conversion in the gasification of char residue than in the gasification of the corresponding raw char. Catalytic minerals, high temperature, and high CO 2 partial pressure benefited the gasification of gasified char residues. The char residues that contained more catalytic minerals were more reactive in gasification and were less sensitive to changes in temperature and CO 2 partial pressure. The Modified Random Pore Model (MRPM) and Random Pore Model (RPM) were used to predict the gasification kinetics of the chars, and the MRPM describes the gasification processes of gasified char residues well.

Keywords: gasification; char; modelling; high ash content (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: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/17/17/4432/pdf (application/pdf)
https://www.mdpi.com/1996-1073/17/17/4432/ (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:17:y:2024:i:17:p:4432-:d:1471058

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 ().