Preliminary study on the explosive performance of coal dust and prospects for engineering applications
Abstract This study aims to evaluate the efficiency and energy release characteristics of different types of coal in pulse detonation engines (PDE) to advance the development of deep coal fluidization detonation technology, achieving more efficient and cleaner coal utilization. Using a custom PDE se...
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Nature Portfolio
2025-01-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-85274-x |
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| author | Jing Guo Shirong Ge |
| author_facet | Jing Guo Shirong Ge |
| author_sort | Jing Guo |
| collection | DOAJ |
| description | Abstract This study aims to evaluate the efficiency and energy release characteristics of different types of coal in pulse detonation engines (PDE) to advance the development of deep coal fluidization detonation technology, achieving more efficient and cleaner coal utilization. Using a custom PDE setup, experiments were conducted with four coal types at mass flow rates from 30 to 120 g/s. High-frequency pressure sensors assessed pressure dynamics and detonation wave propagation, complemented by numerical simulations for accuracy. Results show that the maximum detonation pressure (Pmax) increases linearly with coal mass flow, with anthracite reaching 1.52 MPa at 120 g/s. A consistent linear relationship between Pmax and maximum temperature (T max) was observed. Detonation combustion efficiency (η DCE) improved with mass flow, with peat rising from 52.3% to 83.7%. These findings provide a foundation for advancing deep coal fluidized detonation technology, contributing to more efficient and cleaner coal utilization. |
| format | Article |
| id | doaj-art-76f5c29639694766889f356b4de1a875 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-76f5c29639694766889f356b4de1a8752025-01-05T12:18:37ZengNature PortfolioScientific Reports2045-23222025-01-0115111610.1038/s41598-025-85274-xPreliminary study on the explosive performance of coal dust and prospects for engineering applicationsJing Guo0Shirong Ge1China University of Mining and Technology (Beijing)China University of Mining and Technology (Beijing)Abstract This study aims to evaluate the efficiency and energy release characteristics of different types of coal in pulse detonation engines (PDE) to advance the development of deep coal fluidization detonation technology, achieving more efficient and cleaner coal utilization. Using a custom PDE setup, experiments were conducted with four coal types at mass flow rates from 30 to 120 g/s. High-frequency pressure sensors assessed pressure dynamics and detonation wave propagation, complemented by numerical simulations for accuracy. Results show that the maximum detonation pressure (Pmax) increases linearly with coal mass flow, with anthracite reaching 1.52 MPa at 120 g/s. A consistent linear relationship between Pmax and maximum temperature (T max) was observed. Detonation combustion efficiency (η DCE) improved with mass flow, with peat rising from 52.3% to 83.7%. These findings provide a foundation for advancing deep coal fluidized detonation technology, contributing to more efficient and cleaner coal utilization.https://doi.org/10.1038/s41598-025-85274-xCoalDetonation characteristicsDetonation efficiency |
| spellingShingle | Jing Guo Shirong Ge Preliminary study on the explosive performance of coal dust and prospects for engineering applications Scientific Reports Coal Detonation characteristics Detonation efficiency |
| title | Preliminary study on the explosive performance of coal dust and prospects for engineering applications |
| title_full | Preliminary study on the explosive performance of coal dust and prospects for engineering applications |
| title_fullStr | Preliminary study on the explosive performance of coal dust and prospects for engineering applications |
| title_full_unstemmed | Preliminary study on the explosive performance of coal dust and prospects for engineering applications |
| title_short | Preliminary study on the explosive performance of coal dust and prospects for engineering applications |
| title_sort | preliminary study on the explosive performance of coal dust and prospects for engineering applications |
| topic | Coal Detonation characteristics Detonation efficiency |
| url | https://doi.org/10.1038/s41598-025-85274-x |
| work_keys_str_mv | AT jingguo preliminarystudyontheexplosiveperformanceofcoaldustandprospectsforengineeringapplications AT shirongge preliminarystudyontheexplosiveperformanceofcoaldustandprospectsforengineeringapplications |