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Journal of Thermal Analysis and Calorimetry

, Volume 102, Issue 2, pp 579–585 | Cite as

Effects of cumene hydroperoxide on phenol and acetone manufacturing by DSC and VSP2

  • Chun-Chin Huang
  • Jiou-Jhu Peng
  • Sheng-Hung Wu
  • Hung-Yi Hou
  • Mei-Li You
  • Chi-Min Shu
Article

Abstract

Cumene hydroperoxide (CHP) being catalyzed by acid is one of the crucial processes for producing phenol and acetone globally. However, it is thermally unstable to the runaway reaction readily. In this study, various concentrations of phenol and acetone were added into CHP for determination of thermal hazards. Differential scanning calorimetry (DSC) tests were used to obtain the parameters of exothermic behaviors under dynamic screening. The parameters included exothermic onset temperature (T 0), heat of decomposition (ΔH d), and exothermic peak temperature (T p). Vent sizing package 2 (VSP2) was employed to receive the maximum pressure (P max), the maximum temperature (T max), the self-heating rate (dT/dt), maximum pressure rise rate ((dP/dt)max), and adiabatic time to maximum rate ((TMR)ad) under the worst case. Finally, a procedure for predicting thermal hazard data was developed. The results revealed that phenol and acetone sharply caused a exothermic reaction of CHP. As a result, phenol and acetone are important indicators that may cause a thermal hazard in the manufacturing process.

Keywords

Acetone Cumene hydroperoxide (CHP) Differential scanning calorimetry (DSC) Phenol Vent sizing package 2 (VSP2) 

List of symbols

C01

Initial concentration (mol L−1)

Cv

Heat capacity of the sample under constant volume per mass (mol L−1)

CvR

Heat capacity of the reactor or vessel under constant volume per mass (mol L−1)

dT/dt

Self-heating rate (°C min−1)

Ea

Activation energy (kJ mol−1)

k0

Frequency factor (mol L−1 s−1)

m0

Mass of the sample (g)

mR

Mass of the reactor vessel (g)

Pmax

Maximum pressure (psig)

T0

Exothermic onset temperature (K)

T01

Initiation temperature of a sample (K)

Tmax

Maximum temperature (K)

Tp

Exothermic peak temperature (K)

Ts

Self-heating temperature (K)

ΔHd

Heat of decomposition (kJ kg−1)

(dT/dt)max

Maximum self-heating rate (°C min−1)

(TMR)ad

Adiabatic time to maximum rate (min)

(dP/dt)max

Maximum pressure rise rate (psig min−1)

Φ

Thermal inertia (dimensionless)

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2010

Authors and Affiliations

  • Chun-Chin Huang
    • 1
  • Jiou-Jhu Peng
    • 1
  • Sheng-Hung Wu
    • 2
  • Hung-Yi Hou
    • 3
  • Mei-Li You
    • 4
  • Chi-Min Shu
    • 1
  1. 1.Department of Safety, Health, and Environmental EngineeringNational Yunlin University of Science and Technology (NYUST)DouliouTaiwan, ROC
  2. 2.Doctoral Program, Graduate School of Engineering Science and Technology, NYUSTDouliouTaiwan, ROC
  3. 3.Department of Occupational Safety and HealthJen-Teh Junior College of Medicine, Nursing and ManagementHoulongTaiwan, ROC
  4. 4.Department of General Education CenterChienkuo Technology UniversityChanghuaTaiwan, ROC

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