Citation

Su S, Guo C, Wang L, Cui H, Cao J. China Saf. Sci. J. 2019; 29(4): 58-63.

Copyright

(Copyright © 2019, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2019.04.010

PMID

unavailable

Abstract

In order to investigate the effectiveness of low-pressure water mist with KCl in suppressing heptane oil pool fire, based on a 1. 5 m×1. 5 m×1. 0 m enclosed cabin platform, experimental studies were conducted on the flame characteristics of heptane oil pool fire suppressed by low-pressure water mist (0. 2-0. 6 MPa) with different KCl concentrations (5%, 10%, 15%, 20%).The changes of heptane mass loss rates and flame heights with different KCl mass fractions and at different injection pressure were analyzed. The results show that although the low-pressure pure water mist can strengthen the flame combustion of oil pool, yet the low-pressure water mist with KCl additive can effectively restrain the development of oil fire, among which the water mist with 20% concentration of KCl solution has the best extinguishing effect under 0. 6 MPa pressure. The increase of KCl mass fraction can reduce the average mass loss rate of heptane and lower the overall flame height; similarly, the growth of nozzle pressure can also reduce the fuel oil's average mass loss rate, shorten the fluctuation time of flames, thus advancing combustion into the attenuation stage. © 2019 China Safety Science Journal

Language: zh