Investigations of the effects of two typical jet crushing methods on the atomization and dust reduction performance of nozzles
Abstract Single-fluid nozzles and dual-fluid nozzles are the two typical jet crushing methods used in spray dust reduction. To distinguish the atomization mechanism of single-fluid and dual-fluid nozzles and improve dust control efficiency at the coal mining faces, the atomization characteristics an...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-09-01
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| Series: | International Journal of Coal Science & Technology |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s40789-023-00606-4 |
| _version_ | 1827635856588931072 |
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| author | Han Han Hetang Wang Qi Zhang Yunhe Du Haojie Wang Hui Wang |
| author_facet | Han Han Hetang Wang Qi Zhang Yunhe Du Haojie Wang Hui Wang |
| author_sort | Han Han |
| collection | DOAJ |
| description | Abstract Single-fluid nozzles and dual-fluid nozzles are the two typical jet crushing methods used in spray dust reduction. To distinguish the atomization mechanism of single-fluid and dual-fluid nozzles and improve dust control efficiency at the coal mining faces, the atomization characteristics and dust reduction performance of the two nozzles were quantitatively compared. Results of experiments show that, as water supply pressure increased, the atomization angle of the swirl pressure nozzle reaches a maximum of 62° at 6 MPa and then decreases, but its droplet size shows an opposite trend with a minimum of 41.7 μm. The water supply pressure helps to improve the droplet size and the atomization angle of the internal mixing air–liquid nozzle, while the air supply pressure has a suppressive effect for them. When the water supply pressure is 0.2 MPa and the air supply pressure reaches 0.4 MPa, the nozzle obtains the smallest droplet size which is 10% smaller than the swirl pressure nozzle. Combined with the dust reduction experimental results, when the water consumption at the working surface is not limited, using the swirl pressure nozzle will achieve a better dust reduction effect. However, the internal mixing air–liquid nozzle can achieve better and more economical dust reduction performance in working environments where water consumption is limited. |
| first_indexed | 2024-03-09T15:33:17Z |
| format | Article |
| id | doaj.art-8504ec6115cb41de85d1b59e292fe490 |
| institution | Directory Open Access Journal |
| issn | 2095-8293 2198-7823 |
| language | English |
| last_indexed | 2024-03-09T15:33:17Z |
| publishDate | 2023-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | International Journal of Coal Science & Technology |
| spelling | doaj.art-8504ec6115cb41de85d1b59e292fe4902023-11-26T12:09:17ZengSpringerOpenInternational Journal of Coal Science & Technology2095-82932198-78232023-09-0110111510.1007/s40789-023-00606-4Investigations of the effects of two typical jet crushing methods on the atomization and dust reduction performance of nozzlesHan Han0Hetang Wang1Qi Zhang2Yunhe Du3Haojie Wang4Hui Wang5State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and TechnologyState Key Laboratory of Coal Resources and Safe Mining, China University of Mining and TechnologyState Key Laboratory of Coal Resources and Safe Mining, China University of Mining and TechnologySchool of Safety Engineering, China University of Mining and TechnologySchool of Safety Engineering, China University of Mining and TechnologyState Key Laboratory of Coal Resources and Safe Mining, China University of Mining and TechnologyAbstract Single-fluid nozzles and dual-fluid nozzles are the two typical jet crushing methods used in spray dust reduction. To distinguish the atomization mechanism of single-fluid and dual-fluid nozzles and improve dust control efficiency at the coal mining faces, the atomization characteristics and dust reduction performance of the two nozzles were quantitatively compared. Results of experiments show that, as water supply pressure increased, the atomization angle of the swirl pressure nozzle reaches a maximum of 62° at 6 MPa and then decreases, but its droplet size shows an opposite trend with a minimum of 41.7 μm. The water supply pressure helps to improve the droplet size and the atomization angle of the internal mixing air–liquid nozzle, while the air supply pressure has a suppressive effect for them. When the water supply pressure is 0.2 MPa and the air supply pressure reaches 0.4 MPa, the nozzle obtains the smallest droplet size which is 10% smaller than the swirl pressure nozzle. Combined with the dust reduction experimental results, when the water consumption at the working surface is not limited, using the swirl pressure nozzle will achieve a better dust reduction effect. However, the internal mixing air–liquid nozzle can achieve better and more economical dust reduction performance in working environments where water consumption is limited.https://doi.org/10.1007/s40789-023-00606-4Dust controlSpray nozzleAtomization characteristicsDust reduction performance |
| spellingShingle | Han Han Hetang Wang Qi Zhang Yunhe Du Haojie Wang Hui Wang Investigations of the effects of two typical jet crushing methods on the atomization and dust reduction performance of nozzles International Journal of Coal Science & Technology Dust control Spray nozzle Atomization characteristics Dust reduction performance |
| title | Investigations of the effects of two typical jet crushing methods on the atomization and dust reduction performance of nozzles |
| title_full | Investigations of the effects of two typical jet crushing methods on the atomization and dust reduction performance of nozzles |
| title_fullStr | Investigations of the effects of two typical jet crushing methods on the atomization and dust reduction performance of nozzles |
| title_full_unstemmed | Investigations of the effects of two typical jet crushing methods on the atomization and dust reduction performance of nozzles |
| title_short | Investigations of the effects of two typical jet crushing methods on the atomization and dust reduction performance of nozzles |
| title_sort | investigations of the effects of two typical jet crushing methods on the atomization and dust reduction performance of nozzles |
| topic | Dust control Spray nozzle Atomization characteristics Dust reduction performance |
| url | https://doi.org/10.1007/s40789-023-00606-4 |
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