Suppression of methane/air explosion by water mist with potassium halide additives driven by CO<sub>2</sub>

Wei Tan; Dong Lü; Liyan Liu; Guorui Zhu; Nan Jiang

doi:10.1016/j.cjche.2019.03.020

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Suppression of methane/air explosion by water mist with potassium halide additives driven by CO₂

Process Systems Engineering and Process Safety | Updated：2026-01-06

- Suppression of methane/air explosion by water mist with potassium halide additives driven by CO₂
- Chinese Journal of Chemical Engineering Vol. 27, Issue 11, Pages: 2742-2748(2019)
- Affiliations：
  
  1. School of Chemical Engineering and Technology, Tianjin University,Tianjin,China,300354
  2. Tianjin Fire Research Institute of MEM,Tianjin,China,300381
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2019.03.020
  CLC：
- Published：2019
- Accepted：
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[J]. 中国化学工程学报, 2019, 27(11): 2742-2748.
DOI：

[J]. 中国化学工程学报, 2019, 27(11): 2742-2748. DOI： 10.1016/j.cjche.2019.03.020.

摘要

Abstract

To enhance the explosion suppression effects of water mist

various potassium halide additives were tested in a confined vessel filled with a 10% mixture of methane/air. Air and CO

(0.7 MPa) were used as driver gases. The results revealed that halide additives exhibit considerable suppression effects on explosion overpressure. A 30% KI mist decreased the explosion overpressure by 27.46% compared with the suppression by pure water mist under the same conditions. When CO

is used as the driver gas

it will dissolve in water under high pressure. The synergistic effect of a CO

solution with an effective additive afforded significant suppression. Under the same conditions

the overpressures suppressed by a mist of 30% KI + 0.7 MPa CO

solution decreased by 33.53% compared with those suppressed by pure water mist driven by air. The synergistic suppression effect is much better than that of a 0.7 MPa CO

solution mist or 30% KI mist alone. The multicomponent additives can be considered when suppressing methane/air explosions with pressure-formed water mist.

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Suppression of methane/air explosion by water mist with potassium halide additives driven by CO2

DOI：10.1016/j.cjche.2019.03.020

摘要

Abstract

关键词

Keywords

references

Suppression of methane/air explosion by water mist with potassium halide additives driven by CO₂