Progress in Caking Mechanism and Regulation Technologies of Weakly Caking Coal
Efficient and clean utilization remains a pivotal development focus within the coal industry. Nevertheless, the application of weakly caking coal results in energy loss due to the caking property, thereby leading to a waste of resources. This paper, therefore, concentrates on the caking property, of...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-08-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/18/15/4178 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849406299085733888 |
|---|---|
| author | Zhaoyang Li Shujun Zhu Ziqu Ouyang Zhiping Zhu Qinggang Lyu |
| author_facet | Zhaoyang Li Shujun Zhu Ziqu Ouyang Zhiping Zhu Qinggang Lyu |
| author_sort | Zhaoyang Li |
| collection | DOAJ |
| description | Efficient and clean utilization remains a pivotal development focus within the coal industry. Nevertheless, the application of weakly caking coal results in energy loss due to the caking property, thereby leading to a waste of resources. This paper, therefore, concentrates on the caking property, offering insights into the relevant caking mechanism, evaluation indexes, and regulation technologies associated with it. The caking mechanism delineates the transformation process of coal into coke. During pyrolysis, the active component generates the plastic mass in which gas, liquid, and solid phases coexist. With an increase in temperature, the liquid phase is diminished gradually, causing the inert components to bond. Based on the caking mechanism, evaluation indexes such as that characteristic of char residue, the caking index, and the maximal thickness of the plastic layer are proposed. These indexes are used to distinguish the strength of the caking property. However, they frequently exhibit a poor differentiation ability and high subjectivity. Additionally, some technologies have been demonstrated to regulate the caking property. Technologies such as rapid heating treatment and hydrogenation modification increase the amount of plastic mass generated, thereby improving the caking property. Meanwhile, technologies such as mechanical breaking and pre-oxidation reduce the caking property by destroying agglomerates or consuming plastic mass. |
| format | Article |
| id | doaj-art-792ac8f2e6f548d1a63b29dd6717c0a7 |
| institution | Kabale University |
| issn | 1996-1073 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj-art-792ac8f2e6f548d1a63b29dd6717c0a72025-08-20T03:36:26ZengMDPI AGEnergies1996-10732025-08-011815417810.3390/en18154178Progress in Caking Mechanism and Regulation Technologies of Weakly Caking CoalZhaoyang Li0Shujun Zhu1Ziqu Ouyang2Zhiping Zhu3Qinggang Lyu4State Key Laboratory of Coal Conversion, Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, ChinaState Key Laboratory of Coal Conversion, Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, ChinaState Key Laboratory of Coal Conversion, Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, ChinaState Key Laboratory of Coal Conversion, Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, ChinaState Key Laboratory of Coal Conversion, Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, ChinaEfficient and clean utilization remains a pivotal development focus within the coal industry. Nevertheless, the application of weakly caking coal results in energy loss due to the caking property, thereby leading to a waste of resources. This paper, therefore, concentrates on the caking property, offering insights into the relevant caking mechanism, evaluation indexes, and regulation technologies associated with it. The caking mechanism delineates the transformation process of coal into coke. During pyrolysis, the active component generates the plastic mass in which gas, liquid, and solid phases coexist. With an increase in temperature, the liquid phase is diminished gradually, causing the inert components to bond. Based on the caking mechanism, evaluation indexes such as that characteristic of char residue, the caking index, and the maximal thickness of the plastic layer are proposed. These indexes are used to distinguish the strength of the caking property. However, they frequently exhibit a poor differentiation ability and high subjectivity. Additionally, some technologies have been demonstrated to regulate the caking property. Technologies such as rapid heating treatment and hydrogenation modification increase the amount of plastic mass generated, thereby improving the caking property. Meanwhile, technologies such as mechanical breaking and pre-oxidation reduce the caking property by destroying agglomerates or consuming plastic mass.https://www.mdpi.com/1996-1073/18/15/4178weakly caking coalcaking propertycaking mechanismevaluation indexesregulation technologies |
| spellingShingle | Zhaoyang Li Shujun Zhu Ziqu Ouyang Zhiping Zhu Qinggang Lyu Progress in Caking Mechanism and Regulation Technologies of Weakly Caking Coal Energies weakly caking coal caking property caking mechanism evaluation indexes regulation technologies |
| title | Progress in Caking Mechanism and Regulation Technologies of Weakly Caking Coal |
| title_full | Progress in Caking Mechanism and Regulation Technologies of Weakly Caking Coal |
| title_fullStr | Progress in Caking Mechanism and Regulation Technologies of Weakly Caking Coal |
| title_full_unstemmed | Progress in Caking Mechanism and Regulation Technologies of Weakly Caking Coal |
| title_short | Progress in Caking Mechanism and Regulation Technologies of Weakly Caking Coal |
| title_sort | progress in caking mechanism and regulation technologies of weakly caking coal |
| topic | weakly caking coal caking property caking mechanism evaluation indexes regulation technologies |
| url | https://www.mdpi.com/1996-1073/18/15/4178 |
| work_keys_str_mv | AT zhaoyangli progressincakingmechanismandregulationtechnologiesofweaklycakingcoal AT shujunzhu progressincakingmechanismandregulationtechnologiesofweaklycakingcoal AT ziquouyang progressincakingmechanismandregulationtechnologiesofweaklycakingcoal AT zhipingzhu progressincakingmechanismandregulationtechnologiesofweaklycakingcoal AT qingganglyu progressincakingmechanismandregulationtechnologiesofweaklycakingcoal |