Study on the Suppression of Methane-Air Deflagration Characteristics by Sodium Salt-Modified Dry Water: Experimental and Simulation Research
SSRN, ISSN: 1556-5068
2024
- 32Usage
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Article Description
To prevent explosion hazards of methane, the explosion suppression effects of dry water were enhanced using sodium salt modifiers (NaHCO, CHCOONa, and NaHPO). The effects of different dry water on the pressure and time parameters of methane-air deflagration were tested experimentally. Meanwhile, combined with the thermal characteristics and reaction kinetics model, the mechanism of sodium salt dry water inhibiting methane-air deflagration was revealed. The experimental results show that as the amount of sodium salt modified dry water increased, the P and (dP/dt) of methane-air explosion decreased, and t and t prolonged. The inhibition effect of sodium bicarbonate modified dry water is the best. The calculation of kinetics showed that adiabatic flame temperature and laminar burning speed decreased linearly with the increase of sodium salt dry water addition. The thermal characteristics show that the pyrolysis process of sodium salt dry water absorb heat and dilute the oxygen concentration of the deflagration process. The gaseous NaO will combine with H, O and OH to produce relatively stable NaOH, which will produce chemical inhibition by reducing the net heat release and net key free radical production of the reaction. The research results help to promote the safe use of methane energy.
Bibliographic Details
Elsevier BV
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