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
消防科学与技术

消防科学与技术 ›› 2025, Vol. 44 ›› Issue (12): 1747-1753.

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正丁醇和乙醇不同混合比例流淌火蔓延特性研究

丁超1, 肖康3, 刘先双1, 宋小康1, 郭欣妍1, 马双阳2   

  1. （1.安徽建筑大学 环境与能源工程学院，安徽 合肥 230602； 2.城市生命线产业发展集团有限公司，安徽 合肥230601； 3.太原理工大学 化学与化工学院，山西 太原 030024）
  • 收稿日期:2024-08-04 修回日期:2024-10-07 出版日期:2025-12-15 发布日期:2025-12-25
  • 作者简介:丁 超，安徽建筑大学环境与能源工程学院教授，主要从事建筑火灾与防控技术方面的研究，安徽省合肥市经济技术开发区紫云路292号，230602。
  • 基金资助:
    安徽省高校优秀青年科研项目（2022AH030037）；安徽省高校优秀青年人才支持计划项目（qxyqZD2022058）

Study on the spreading characteristics of spill fire with different mixing ratios of n-butanol and ethanol

Ding Chao1, Xiao Kang3, Liu Xianshuang1, Song Xiaokang1, Guo Xinyan1, Ma Shuangyang2   

  1. (1. School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei Anhui 230602, China; 2. Urban Lifeline Industry Development Group Co., Ltd., Hefei Anhui 230601, China; 3. College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan Shanxi 030024, China)
  • Received:2024-08-04 Revised:2024-10-07 Online:2025-12-15 Published:2025-12-25

摘要： 为了深入研究不同燃料相互混合以及燃料泄漏速率对流淌火蔓延特性的影响，本文基于长、宽分别为100 cm、4 cm的流淌槽，研究了不同混合比例、不同泄漏流量下正丁醇-乙醇混合燃料流淌火的燃烧特性。结果表明：混合燃料流淌火火焰在前进过程中，蔓延方式随着燃料泄漏速率的增加分为“跳跃-回缩-爬行”“跳跃-爬行”和“匀速蔓延”3种模式，随着混合比例的增大不再出现“回缩”现象；对于相同泄漏速率的混合燃料，火焰高度随正丁醇、乙醇混合比例的增大而减小；混合乙醇后，正丁醇燃料流淌火的蔓延速率增大，混合比例从10：0上升到10：4时，火焰平均蔓延速率增大了46.55%；在相同泄漏速率情况下，流淌火区域温度和辐射热流密度随正丁醇、乙醇混合比例的增大而减小。

关键词: 流淌火, 正丁醇, 乙醇, 混合燃料, 蔓延特性

Abstract: In order to study the influence of different fuel mixture and fuel leakage rate on the spreading characteristics of spill fire, this paper conducts research on the combustion characteristics of n-butanol-ethanol mixed fuel spill fire with different mixing ratios and leakage rates based on a spill with dimensions of 100 cm×4 cm. The results show that during the forward process, the spreading pattern of the mixed fuel spill fire flame changes with the increase of the fuel leakage rate, dividing into three modes, "jump-recoil-crawl", "jump-crawl", and "uniform spreading", and there will be no "recoil" phenomenon as the mixing ratio increases; for the same leakage rate of the mixed fuel, the flame height decreases as the n-butanol-ethanol mixing ratio increases; the spreading velocity of the mixed fuel spill fire after adding ethanol to n-butanol increases, and the average spreading speed increases by 46.55% when the mixing ratio rises from 10：0 to 10：4; under the same leakage rate conditions the temperature and radiant heat flux density in the spill fire area decrease as the n-butanol-ethanol mixing ratio increases.

Key words: spill fire, n-butanol, ethanol, mixed fuel, spread characteristics