Experimental research on low-pressure water mist in suppressing ship oil pool fire effectiveness with KCl

doi:10.16265/j.cnki.issn1003-3033.2019.04.010

Abstract

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.

Key words: ship fire, low pressure water mist, KCl additive, oil pool fire, suppression effect

CLC Number:

X932

SU Shichuan, GUO Chenyu, WANG Liang, CUI Haibin, CAO Jiabin. Experimental research on low-pressure water mist in suppressing ship oil pool fire effectiveness with KCl[J]. China Safety Science Journal, 2019, 29(4): 58-63.

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