International Journal of Environmental Science and Development

Abstract—In order to study the synergistic fire extinguishing effect of potassium salt additives in water mist, the fire extinguishing experiments were carried out with the two of seven kinds of potassium salt additives (KNO₃, CH₃COOK, K₂C₂O₄, KCl, K₂CO₃, K₂SO₄ and KHCO₃) with the same mass fraction. The results show that the fire extinguishing time of K  ₂  C ₂ O₄ -  K ₂ SO₄, K ₂CO₃ - CH₃COOK, K ₂ CO₃ - KCl,  KNO₃ - K ₂ SO₄, CH ₃COOK - K ₂ SO₄ is less  than t he fire extinguishing time of the single additive, which indicates that the chemical inhibiting effects of the additives are enhanced, and there is a synergistic fire extinguishing effect among the potassium additives combinations which are mentioned above. Finally, the mechanism of the synergistic fire extinguishing effect is conjectured as follows: under the activation of high-temperature steam in the flame zone, a kind of substance after melting or decomposing accelerates the generation rate of fire extinguishing active substances, thereby increasing the extinguishing efficiency.

Index Terms—Mechanism, potassium, synergistic effect, water mist.

The authors are with Beijing Institute of Technology, Beijing, China (e-mail: 452083443@qq.com, 478550071@qq.com, zhaolinshuang@bit.edu.cn).

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Cite: Zhe Dong, Shao-Kun Wei, and Lin-Shuang Zhao, "Experimental Study on Synergistic Fire Extinguishing between Different Potassium Additives in Water Mist," International Journal of Environmental Science and Development vol. 10, no. 2, pp. 75-78, 2019.