Hazard Assessment of Hydrogen Peroxide with Polyphosphonic Acid by Vent Sizing Package 2

In order to evaluate the effect of polyphosphonic acid used as a stabilizer on the hydrogen peroxide, VSP2 (Vent Sizing Package 2) was employed to carry out the thermal runaway reaction for the various concentrations of Amino Trimethylene Phosphonic Acid(ATMP) with hydrogen peroxide (H2O2) and H2O2 mixes with 100 ppm Fe3+, respectively. Thermodynamic parameters were recorded under the adiabatic condition, and the time to the maximum rate TMRad at 25 °C was obtained from the dynamics data. The results indicated that polyphosphonic acid could restrain the effect of temperature and Fe3+ on the catalytic decomposition of H2O2, and reduced the risk of thermal runaway significantly. The initial decomposition temperature T0 of H2O2 rises as the concentration of ATMP increases but stops rising when the concentration exceeds 400 ppm. In the environment of 400 ppm ATMP, it was discovered that T0 of H2O2 increased from 50°C to 115°C.