亚氯酸钠助燃特性试验分析研究  

Experimental analysis and research on the combustion supporting characteristics of sodium chlorite

作　　者：施云献 Shi Yunxian(Tianjin Hedong Fire and Rescue Division,Tianjin 300000,China)

机构地区：[1]天津市河东区消防救援支队,天津300000

出　　处：《消防科学与技术》2024年第7期952-958,共7页Fire Science and Technology

摘　　要：为了研究亚氯酸钠的防火措施,首先,通过模拟试验研究了不同引火源和湿度条件下亚氯酸钠的助燃特性;其次,通过离子色谱法测定燃烧残留物中ClO-2的含量,以对亚氯酸钠的助燃效果进行定量分析;最后,基于上述研究,制定针对亚氯酸钠的防火设计策略。结果表明,烟头作为引火源时,亚氯酸钠可使大多数可燃物燃烧,尤其是对含硫物质和山梨酸钾的助燃作用最为显著;机械火花作为引火源时,亚氯酸钠可促进含硫物质和防腐剂燃烧,也能使疏松多孔的可燃物燃烧,但结构致密的布料则难以引燃;白炽灯作为引火源时,亚氯酸钠仅能助燃少数几种还原性较强的物质;而电暖器作为引火源时,亚氯酸钠无法促使样品燃烧。此外,水滴作为引火源时,亚氯酸钠可促使含硫有机物或有还原性的含硫物质燃烧。在33.1%~97.6%的湿度条件下,亚氯酸钠分别与硫磺、硫化钠混合的样品亦可发生燃爆。对亚氯酸钠助燃特性的试验研究可为其生产、存储和运输中的防火需求提供一定的参考。In order to study fire prevention measures for sodium chlorite,firstly,the combustion-supporting characteristics of sodium chlorite under different ignition sources and humidity conditions were studied through simulation experiments.Secondly,ion chromatography is employed to measure the content of ClO-2 in the combustion residues,thereby quantitatively analyzing the combustion-supporting effect of sodium chlorite.Finally,fire prevention design strategies for sodium chlorite are formulated based on the investigations above.The results show that when a cigarette butt is used as an ignition source,sodium chlorite can cause most of combustible materials to burn,with the greatest pronounced effect observed on sulfur-containing substances and potassium sorbate.When mechanical sparks are used as ignition sources,sodium chlorite can promote the combustion of sulfurcontaining substances,preservatives as well as porous combustibles,but it is difficult to promote the combustion of fabrics with dense structure.When an incandescent light is used as an ignition source,sodium chlorite can only facilitate the combustion of a few strong reducing agents.However,when an electric heater is used as an ignition source,sodium chlorite fails to cause the combustion of any of the experimental samples.In addition,when a drop of water is used as an ignition source,sodium chlorite can cause the combustion of sulfur-containing organic compounds or reductive sulfur-containing substance.Samples mixed with sulfur and sodium sulfide can even undergo deflagration under humidity conditions ranging from 33.1%to 97.6%.This paper can provide some reference for fire prevention requirements in production,storage and transportation of sodium chlorite.

关 键 词：亚氯酸钠 助燃特性 燃烧残留物 防火措施 

分 类 号：X913.4[环境科学与工程—安全科学] D918.91[政治法律—法学]