Journal of Thermal Analysis and Calorimetry

, Volume 96, Issue 3, pp 777–782 | Cite as

Thermal explosion and runaway reaction simulation of lauroyl peroxide by DSC tests

  • Mei-Li You
  • Ming-Yang Liu
  • Sheng-Hung Wu
  • Jen-Hao Chi
  • Chi-Min Shu


Lauroyl peroxide (LPO) is a typical organic peroxide that has caused many thermal runaway reactions and explosions. Differential scanning calorimetry (DSC) was employed to determine the fundamental thermokinetic parameters that involved exothermic onset temperature (T0), heat of decomposition (ΔHd), and other safety parameters for loss prevention of runaway reactions and thermal explosions. Frequency factor (A) and activation energy (Ea) were calculated by Kissinger model, Ozawa equation, and thermal safety software (TSS) series via DSC experimental data. Liquid thermal explosion (LTE) by TSS was employed to simulate the thermal explosion development for various types of storage tank. In view of loss prevention, calorimetric application and model analysis to integrate thermal hazard development were necessary and useful for inherently safer design.


Activation energy (EaDifferential scanning calorimetry (DSC) Exothermic onset temperature (T0Heat of decomposition (ΔHdLauroyl peroxide (LPO) Thermal safety software (TSS) 



Frequency factor (s−1 M1–n)


Vessel wetted surface area (m2)


Liquid specific heat at constant pressure (kJ kg−1°C−1)


Initial concentration (mole L−1)


Activation energy (kJ mol−1)


Pre-exponential factor (s−1)


Rate at stage i (s−1)


Mass of reactant (g)


Mass of reactor (kg)


Order of reaction (dimensionless)


Maximum pressure during overall reaction (psig)

\( \dot{Q} \)

Heat flow (W g−1)


Calorific capacity (J g−1)


Ideal gas constant (8.314 J mol−1 K−1)


Wetted surface area (m2)


Self-accelerating decomposition temperature (°C)


Temperature (°C)


Final adjusted temperature (K)


Initial adjusted temperature (K)


Final temperature (°C)


Final measured temperature (K)


Exothermic onset temperature (°C)


Initial measured temperature (K)


Temperature of no return (°C)


Maximum temperature during overall reaction (°C)


Temperature on the wall (°C)


Time to maximum rate under adiabatic system (min, h)


Heat transfer coefficient (kJ min−1 m−2 K−1)

\( \phi \)

Thermal inertia (dimensionless)

(dT dt−1)

Self-heating rate (°C min−1)

(dT dt−1)A

Actual self-heating rate (°C min−1)


Degree of conversion (dimensionless)


Heating rate (°C min−1)


Heat of decomposition (J kg−1)


Heat conductivity (J ms K−1)



The authors are indebted to the donors of the National Science Council (NSC) in Taiwan under the contract No. NSC-96-2625-Z-224-001 for financial support. The authors would also like to thank Dr. Kuo-Ming Luo for valuable suggestions on experiments and the measurements of a runaway reaction.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2009

Authors and Affiliations

  • Mei-Li You
    • 1
    • 2
  • Ming-Yang Liu
    • 2
  • Sheng-Hung Wu
    • 1
  • Jen-Hao Chi
    • 3
  • Chi-Min Shu
    • 1
  1. 1.Graduate School of Engineering Science and TechnologyNational Yunlin University of Science and TechnologyYunlinTaiwan, ROC
  2. 2.Department of General EducationChienkuo Technology UniversityChanghuaTaiwan, ROC
  3. 3.Department of Fire ScienceWu Feng Institute of TechnologyChiayiTaiwan, ROC

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