Influence of NH4H2PO4 powder on the laminar burning velocity of premixed CH4/Air flames

Hao, Jinyuan; Du, Zhiming; Zhang, Tianwei; Li, Haoyang

doi:10.1016/j.ijhydene.2022.09.003

Cited by 12 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…9). This does not differ from the practical data, well known from works [1,6], the authors of which also relate the effectiveness of extinguishing the flame during the decomposition of an inorganic compound under the influence of a flame. But, in contrast to the results of studies reported in [12,13], the data on the effect of combustion inhibitors on the process of slowing down the burning rate allow us to state the following:…”

Section: Discussion Of Results Of Investigating the Process Of Flame ...supporting

confidence: 50%

“…In work [1], using theoretical, experimental, and numerical modeling approaches, the complex mechanism of flame inhibition of a preliminary mixture of hydrocarbons/air with monoammonium phosphate (NH 4 H 2 PO 4 ) powder is studied. Experimental results demonstrate that the laminar burning rate of a premixed CH 4 /air/NH 4 H 2 PO 4 flame decreased non-linearly with increasing NH 4 H 2 PO 4 powder concentration.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

See 1 more Smart Citation

Identifying the regularities of n-heptane flame inhibition by inorganic compounds

Tsapko,

Likhnyovskyi

et al. 2024

EEJET

View full text Add to dashboard Cite

The task related to using inorganic compounds for extinguishing flames is to enable their inhibitory capacity during operation within wide limits. Therefore, the object of the current research was aqueous solutions of inorganic salts, on which the effectiveness of inhibitory properties during interaction with n-heptane flame was established. It has been proven that increasing the mass flow rate of water by 1.5 mg/s reduces the intensity of OH-radicals radiation from 70 % to 30 % and lowers the flame temperature by 90 °C. However, it was found that when potassium salts are given, the intensity of OH-radicals radiation decreases by more than 6 times, potassium chloride and sulfate reduce the intensity of OH-radicals radiation by more than 2.8 times. Among ammonium salts, salts of dihydrogen phosphate and ammonium hydrogen phosphate reduce the relative intensity of radiation of OH radicals by more than 1.3 times. Sodium salts include nitrates and sodium chloride, which reduce the relative radiation intensity of OH radicals by more than 1.6 times. This is manifested, first of all, in the enrichment of the combustible environment with fuel. When determining the flame temperature of flammable liquids, it was established that n-heptane has the most stable and highest flame temperature, which is 1768 °C. When adding inorganic compounds to the flame of n-heptane, nitrate salt, and potassium chloride, the flame temperature increased by less than 20 °C. However, ammonium salts increased the flame temperature to over 140 °C, despite the presence of water. The practical significance is that the results were taken into account during the design and development of extinguishing agents for extinguishing fires. Therefore, there are reasons to assert the possibility of regulating flame extinguishing processes by using inorganic compounds capable of inhibiting active flame radicals

show abstract

Section: Discussion Of Results Of Investigating the Process Of Flame ...supporting

confidence: 50%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Identifying the regularities of n-heptane flame inhibition by inorganic compounds

Tsapko,

Likhnyovskyi

et al. 2024

EEJET

View full text Add to dashboard Cite

show abstract

“…Current strategies for mine evacuation are blind and outdated technologies that only require people to run to predefined locations such as escape ways or refugee chambers during emergencies [1]. An evacuation is usually initiated by an explosion [2,3] and the release of a stench gas [4]. Upon smelling the stinky gas, miners leave their workplaces and start moving to predefined locations.…”

Section: Introductionmentioning

confidence: 99%

The Development of a New Smart Evacuation Modeling Technique for Underground Mines Using Mathematical Programming

Meij,

Shishvan,

Sattarvand

2024

Mining

View full text Add to dashboard Cite

Navigating miners during an evacuation using smart evacuation technology can significantly decrease the evacuation time of an underground mine in case of emergency hazards. This paper presents a mathematical programming model to calculate the most efficient escape path for miners as a critical component of smart evacuation technology. In this model, the total evacuation distance of the crew is minimized and scenarios with blocked pathways and stamina categories for the miners are simulated. The findings revealed that all the tested scenarios were technically feasible. Using the feature that filters out blocked pathways has no downsides as safer routes are calculated and there is no penalty in the computation time. This paper also discusses the social and technical issues that must be resolved before the algorithm can be implemented as an actual escape solution.

show abstract

Macroscopic behavior and kinetic mechanism of ammonium dihydrogen phosphate for suppressing polyethylene dust deflagration

Yu,

Meng,

Chen

et al. 2024

Chemical Engineering Journal

View full text Add to dashboard Cite

Influence of NH4H2PO4 powder on the laminar burning velocity of premixed CH4/Air flames

Cited by 12 publications

References 36 publications

Identifying the regularities of n-heptane flame inhibition by inorganic compounds

Identifying the regularities of n-heptane flame inhibition by inorganic compounds

The Development of a New Smart Evacuation Modeling Technique for Underground Mines Using Mathematical Programming

Macroscopic behavior and kinetic mechanism of ammonium dihydrogen phosphate for suppressing polyethylene dust deflagration

Contact Info

Product

Resources

About