The free radical mechanism of the effects of different metal materials on hydrogen explosion

Abstract

To investigate the effect of magnetic materials on hydrogen explosion, experiments on the effect of antimagnetic aluminium wires and ferromagnetic nickel wires on hydrogen explosion are carried out, using CHEMKIN-PRO software to simulate the free radical chain reaction process during hydrogen explosion. The results show that aluminium and nickel wires inhibit and promote the hydrogen explosion when the volume fraction of hydrogen is below 20% and above 25%, respectively. In general, the ferromagnetic nickel wires inhibit and promote the hydrogen explosion better than the aluminium wires. The ferromagnetic nickel wires are able to generate an induced magnetic field during the explosion process, which further influences the key radicals such as ·H, ·O, and ·OH in the hydrogen explosion chain reaction, thus resulting in the inhibition and promotion of hydrogen explosion by the nickel wires being stronger than that of the aluminium wires.