Year: 2025
Type: article
Abstract: High Resolution Image Download MS PowerPoint Slide This study investigates the microscale suppression mechanisms of four powder explosion suppressants on coal dust/methane (CH 4 ) mixed system explosions. Combining experimental and numerical simulation methods, we explore the gas-phase reaction processes and the role of free radicals in the explosion suppression. Results show that all suppressants reduce the maximum explosion pressure and pressure rise rate, with MPP being the most effective, reducing pressure by 38%. Suppressants inhibit explosions through physical (heat absorption) and chemical (free-radical consumption) mechanisms. Phosphorus-containing intermediates from NH 4 H 2 PO 4 and MPP react with free radicals, while NaHCO 3 and MCA decompose to produce inert gases and consume O• and H• radicals. This work provides a theoretical foundation for optimizing explosion suppressants in mining safety applications.
Source: ACS Omega
Authors: Changhu Li, Pengjiang Deng, Youwei Guo, Bingbing Zhang, Yansong Zhang, Xiangrui Wei
Language: English
Subfield: Aerospace Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,935
Award: G3151819749
OpenAlex ID: W4411080385