Experimental investigation of explosion mitigating properties of aqueous potassium carbonate solutions

The experimental results show that by increasing the amount of potassium carbonate in water, an increase of the degree of mitigation (reduction of flame velocity and explosion overpressure) is observed up to possible full quenching. For the same mass loading density, aqueous solutions of K2CO3 in concentrations above 50-60 g/l have superior inhibition properties compared to dry K2CO3 powders with a particle distribution in the range of 20-100 μm.