Flammability
studies of 3-methyl pyridine/water system |
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| Authors: | R-L Yun Y-M Chang C-H Lin K-H Hu C-M Shu |
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| Institution: | (1) Doctoral Candidate, Graduate School of Engineering Science and Technology, , National Yunlin University of Science and Technology (NYUST), Touliu, Yunlin, Taiwan, ROC, 64002, 123, University Rd., Sec. 3;(2) Process Safety and Disaster Prevention Laboratory, Department of Safety, Health, and Environmental Engineering, National Yunlin University of Science and Technology (NYUST), Touliu, Yunlin, Taiwan, ROC, 64002, 123, University Rd., Sec. 3;(3) Department of Occupational Safety and Health, Jen-Teh Junior College of Medicine, Nursing and Management, Houlong, Miaoli, Taiwan, ROC, 35664, 1, Jen-Teh Rd. |
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| Abstract: | In industrial processes, information
on the safety property of chemicals is essentially crucial for safe handling
during unit operations. Ensuring the safe use of combustible or flammable
substances in processes is unlikely without detailed investigations of their
flammability characteristics and related hazards. We studied 3-methyl pyridine
(3-picoline), e.g., flammability limits (LFL/UFL), maximum explosion pressure
(P
max), maximum
explosion pressure rise (dP/dt)max, minimum oxygen concentration
(MOC), vapor deflagration index (K
g),
and characterized the influence of inert steam (H2O)
on critical parameters for 3-picoline/water mixtures at 270°C, 1 atm,
various oxygen concentrations, and vapor mixing ratios (100/0, 30/70, 10/90
and 5/95 vol.%) with a 20-L-Apparatus in simulated conditions, respectively.
The results showed that the flammability characteristics
of 3-picoline(aq) all increased with the oxygen concentration.
However, as the composition of inert steam increased, the flammability parameters
and the degree of fire and explosion hazards were significantly reduced, instead.
This study elucidated the flammability properties of 3-picoline mixed with
inert steam. The conclusions could be applied to proactively prevent the relevant
processes from incurring fire and explosion accidents. |
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| Keywords: | fire and explosion hazards flammability characteristics inert steam 20-L-Apparatus 3-methyl pyridine (3-picoline) |
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