Experimental characterization of liquid film behavior during droplets–polyethylene particle collision
Abstract Nowadays, the droplet–particle collision characteristics in the gas‐phase ethylene polymerization process are still unclear. The high‐speed photography and a quasi‐circle imaging approach are employed to study the collision interaction characteristics between liquid droplets and polyethylen...
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crwiley:10.1002/aic.16909 2024-06-23T07:55:25+00:00 Experimental characterization of liquid film behavior during droplets–polyethylene particle collision Ren, Xiang Sun, Jingyuan Huang, Zhengliang Yang, Yao Tian, Sihang Wang, Jingdai Yang, Yongrong 2020 http://dx.doi.org/10.1002/aic.16909 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Faic.16909 https://onlinelibrary.wiley.com/doi/pdf/10.1002/aic.16909 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/aic.16909 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor AIChE Journal volume 66, issue 5 ISSN 0001-1541 1547-5905 journal-article 2020 crwiley https://doi.org/10.1002/aic.16909 2024-06-13T04:19:49Z Abstract Nowadays, the droplet–particle collision characteristics in the gas‐phase ethylene polymerization process are still unclear. The high‐speed photography and a quasi‐circle imaging approach are employed to study the collision interaction characteristics between liquid droplets and polyethylene particles. The liquid film evolution is studied through variations of the film thickness on the particle north pole, the dynamic contact angle, center angle and film thickness at the maximum extension. Results have found that for n ‐hexane the threshold temperature of the recoil happening increases with increasing initial Weber number, but for 1‐hexene it is stable. Over 70°C evaporation and splash occurs immediately. Under low Weber numbers, the water droplet stays for damping oscillations, the reference stable height of which is linearly related to temperatures. Moreover, three regimes of film thickness variation with time are identified and mathematically described, while Regime 3 characteristics are found strongly dependent on the liquid species, Weber number, and particle temperature. Article in Journal/Newspaper North Pole Wiley Online Library North Pole AIChE Journal 66 5 |
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English |
description |
Abstract Nowadays, the droplet–particle collision characteristics in the gas‐phase ethylene polymerization process are still unclear. The high‐speed photography and a quasi‐circle imaging approach are employed to study the collision interaction characteristics between liquid droplets and polyethylene particles. The liquid film evolution is studied through variations of the film thickness on the particle north pole, the dynamic contact angle, center angle and film thickness at the maximum extension. Results have found that for n ‐hexane the threshold temperature of the recoil happening increases with increasing initial Weber number, but for 1‐hexene it is stable. Over 70°C evaporation and splash occurs immediately. Under low Weber numbers, the water droplet stays for damping oscillations, the reference stable height of which is linearly related to temperatures. Moreover, three regimes of film thickness variation with time are identified and mathematically described, while Regime 3 characteristics are found strongly dependent on the liquid species, Weber number, and particle temperature. |
format |
Article in Journal/Newspaper |
author |
Ren, Xiang Sun, Jingyuan Huang, Zhengliang Yang, Yao Tian, Sihang Wang, Jingdai Yang, Yongrong |
spellingShingle |
Ren, Xiang Sun, Jingyuan Huang, Zhengliang Yang, Yao Tian, Sihang Wang, Jingdai Yang, Yongrong Experimental characterization of liquid film behavior during droplets–polyethylene particle collision |
author_facet |
Ren, Xiang Sun, Jingyuan Huang, Zhengliang Yang, Yao Tian, Sihang Wang, Jingdai Yang, Yongrong |
author_sort |
Ren, Xiang |
title |
Experimental characterization of liquid film behavior during droplets–polyethylene particle collision |
title_short |
Experimental characterization of liquid film behavior during droplets–polyethylene particle collision |
title_full |
Experimental characterization of liquid film behavior during droplets–polyethylene particle collision |
title_fullStr |
Experimental characterization of liquid film behavior during droplets–polyethylene particle collision |
title_full_unstemmed |
Experimental characterization of liquid film behavior during droplets–polyethylene particle collision |
title_sort |
experimental characterization of liquid film behavior during droplets–polyethylene particle collision |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1002/aic.16909 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Faic.16909 https://onlinelibrary.wiley.com/doi/pdf/10.1002/aic.16909 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/aic.16909 |
geographic |
North Pole |
geographic_facet |
North Pole |
genre |
North Pole |
genre_facet |
North Pole |
op_source |
AIChE Journal volume 66, issue 5 ISSN 0001-1541 1547-5905 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/aic.16909 |
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AIChE Journal |
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66 |
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5 |
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1802648010130194432 |