LAPSE:2020.0439
Published Article
LAPSE:2020.0439
Investigation into the Suppression Effects of Inert Powders on the Minimum Ignition Temperature and the Minimum Ignition Energy of Polyethylene Dust
May 18, 2020
The risks associated with dust explosions still exist in industries that either process or handle combustible dust. This explosion risk could be prevented or mitigated by applying the principle of inherent safety. One effective principle is to add an inert material to a highly combustible material in order to decrease its ignition sensitivity. This paper deals with an experimental investigation of the influence of inert dust on the minimum ignition temperature and the minimum explosion energy of combustible dust. The experiments detailed here were performed in a Godbert−Greenwald (GG) furnace and a 1.2 L Hartmann tube. The combustible dust (polyethylene—PE; 800 mesh) and four inert powders (NaHCO3, Na2C2O4, KHCO3, and K2C2O4) were used. The suppression effects of the four inert powders on the minimum ignition temperature and the minimum explosion energy of the PE dust have been evaluated and compared with each other. The results show that all of the four different inert dusts have an effective suppression effect on the minimum ignition temperature and the minimum explosion energy of PE dust. However, the comparison of the results indicates that the suppression effect of bicarbonate dusts is better than that of oxalate dust. For the same kind of bicarbonate dusts, the suppression effects of potassium salt dusts are better than those of the sodium salt. The possible mechanisms for the better suppression effects of bicarbonate dusts and potassium salt dusts have been analyzed here.
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Keywords
dust explosion, inert powder, minimum ignition energy, minimum ignition temperature, suppression effect
Subject
Suggested Citation
Lin C, Qi Y, Gan X, Feng H, Wang Y, Ji W, Wen X. Investigation into the Suppression Effects of Inert Powders on the Minimum Ignition Temperature and the Minimum Ignition Energy of Polyethylene Dust. (2020). LAPSE:2020.0439
Author Affiliations
Lin C: State Key Laboratory Cultivation Bases for Gas Geology and Gas Control, College of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China; The Collaboration Innovation Center of Coal Safety Production of Henan Province, Henan
Qi Y: State Key Laboratory Cultivation Bases for Gas Geology and Gas Control, College of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China; The Collaboration Innovation Center of Coal Safety Production of Henan Province, Henan
Gan X: State Key Laboratory Cultivation Bases for Gas Geology and Gas Control, College of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China; The Collaboration Innovation Center of Coal Safety Production of Henan Province, Henan
Feng H: State Key Laboratory Cultivation Bases for Gas Geology and Gas Control, College of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China; The Collaboration Innovation Center of Coal Safety Production of Henan Province, Henan
Wang Y: State Key Laboratory Cultivation Bases for Gas Geology and Gas Control, College of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China; The Collaboration Innovation Center of Coal Safety Production of Henan Province, Henan [ORCID]
Ji W: State Key Laboratory Cultivation Bases for Gas Geology and Gas Control, College of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China; The Collaboration Innovation Center of Coal Safety Production of Henan Province, Henan
Wen X: School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo 454003, China [ORCID]
Qi Y: State Key Laboratory Cultivation Bases for Gas Geology and Gas Control, College of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China; The Collaboration Innovation Center of Coal Safety Production of Henan Province, Henan
Gan X: State Key Laboratory Cultivation Bases for Gas Geology and Gas Control, College of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China; The Collaboration Innovation Center of Coal Safety Production of Henan Province, Henan
Feng H: State Key Laboratory Cultivation Bases for Gas Geology and Gas Control, College of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China; The Collaboration Innovation Center of Coal Safety Production of Henan Province, Henan
Wang Y: State Key Laboratory Cultivation Bases for Gas Geology and Gas Control, College of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China; The Collaboration Innovation Center of Coal Safety Production of Henan Province, Henan [ORCID]
Ji W: State Key Laboratory Cultivation Bases for Gas Geology and Gas Control, College of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China; The Collaboration Innovation Center of Coal Safety Production of Henan Province, Henan
Wen X: School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo 454003, China [ORCID]
Journal Name
Processes
Volume
8
Issue
3
Article Number
E294
Year
2020
Publication Date
2020-03-04
Published Version
ISSN
2227-9717
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Original Submission
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PII: pr8030294, Publication Type: Journal Article
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LAPSE:2020.0439
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doi:10.3390/pr8030294
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[v1] (Original Submission)
May 18, 2020
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May 18, 2020
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https://psecommunity.org/LAPSE:2020.0439
Original Submitter
Calvin Tsay
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