Development of Measurement System for Low Temperature Limit of Flammability

doi:10.7652/xjtuxb201405014

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Development of Measurement System for Low Temperature Limit of Flammability

更新时间：2025-07-09

- Development of Measurement System for Low Temperature Limit of Flammability
- Vol. 48, Issue 5, Pages: 78-81(2014)
- 作者机构：
  
  西安交通大学热流科学与工程教育部重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201405014
  CLC： O643.2
- Online First：10 May 2014，
  
  Published：2014
- 稿件说明：
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Development of Measurement System for Low Temperature Limit of Flammability[J]. 2014, 48(5): 78-81.
DOI：

Development of Measurement System for Low Temperature Limit of Flammability[J]. 2014, 48(5): 78-81. DOI： 10.7652/xjtuxb201405014.

摘要

由于闪点不能完全准确表示液体可燃的最低温度

根据ASTM E1232-07标准

研制了一套测量可燃性物质最低可燃温度的实验系统

该系统可用于液体及固体的可燃性实验研究

实验测量的重复性与准确度均优于±0.5 ℃。对ASTM E1232-07标准中给出的两种可燃性物质进行了测试

验证了实验系统的准确性。利用新研制的实验系统对几种常见可燃性液体的最低可燃温度进行了实验研究

并将其与闪点的测量结果进行了比较

在所研究的几种可燃性物质中

闪点与最低可燃温度的最大偏差达到了4 ℃

实验结果表明闪点测量结果具有一定的安全局限性。

Abstract

Because the lowest explosion temperature of combustible liquids cannot be completely accurately described by flash point

a low temperature limit of flammability measurement system for testing the flammable liquid or solid chemicals is developed following the standard of ASTM E1232-07. The repeatability and accuracy of the apparatus get better than ±0.5 ℃. The reliability of the system is validated by the measurements for acetic acid and phthalic anhydride. Low temperature limits of the flammability of several common flammable liquids are sought out and experimentally compared with their flash points. The maximum deviation between the low temperature limits of flammability and the flash points approaches 4 ℃

which reveals the importance of low temperature limit of flammability for the safety production

transport and operation in the industries relating to flammable compounds.

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references

中华人民共和国国家质量监督检验检疫总局. GB/T 21775—2008 闪点的测定: 闭杯平衡法[S]. 北京: 中国标准出版社, 2008.

American Society of Testing and Materials. ASTM E1232- 07 Standard test method for temperature limit of flammability of chemicals[S]. Philadelphia, USA: ASTM International, 2007.

BRANDES E, MITU M, PAWEL D. The low explosion point: a good measure for explosion prevention: experiment and calculation for pure compounds and some mixtures[J]. Journal of Loss Prevention in the Process Industries, 2007, 20(4): 536-540.

BRANDES E, MITU M, PAWEL D. Flash-point or lower explosion point: which one to choose for explosion-prevention[C/OL]∥Proceedings of European Combustion Meeting. Louvain-la-Neuve, Belgium, 2005.[2013-11-05]. http: ∥www.gfcombustion.asso.fr/ecm/2005/197_Pawel.pdf

ROWLEY J. Flammability limits, flash points, and their consanguinity-critical analysis, experimental exploration, and prediction[D]. Provo, UT, USA: Brigham Young University, 2010.

张可, 孟现阳, 郭静文, 等. 平衡杯闪点仪的研制及二甲基亚砜水溶液闪点的实验研究[J]. 工程热物理学报, 2013, 34(11): 2001-2005.

ZHANG Ke, MENG Xianyang, GUO Jingwen, et al. Development of flash point tester based on equilibrium method and flash points of dimethyl sulfoxide aqueous solutions[J]. Journal of Engineering Thermophysics, 2013, 34(11): 2001-2005.

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