主管:中华人民共和国应急管理部
主办:应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU

Fire Science and Technology ›› 2020, Vol. 39 ›› Issue (12): 1720-1722.

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Exploratory experimental study on thermal stability of foam

WU Jing-feng, TAN Long-mei, ZHOU Ri-feng, LANG Xu-qing, SHANG Zu-zheng, MOU Xiao-dong, JIAO Jin-qing   

  1. SINOPEC Research Institute of Safety Engineering, State Key Laboratory of Safety and Control for Chemicals, Shandong Qingdao 266100, China
  • Online:2020-12-15 Published:2020-12-15

Abstract:

By observing the change of foam state and oil temperature on hot oil surface, the influence factors of foam thermal stability and foam performance on oil temperature were studied. The test proves that the temperature of the oil determines the thermal stability of the foam. The critical oil temperature at which the foam stays on the oil is 125 ℃; when the oil temperature is higher than 125 ℃, as the oil temperature increases, the foam disappears faster and faster. The decrease rate of oil temperature is related to the temperature of oil, the foam drainage rate, and the viscosity of oil, but has nothing to do with the foam expansion ratio. The higher the oil temperature, the faster the foam drainage rate and the lower the viscosity of the oil, the faster the decrease rate of the oil temperature  

Key words: high temperature oil, foam, foam properties, expansion, 25% drainage time, foam stability