Authors:Jian-Ming Wei, Mei-Li You, Yung-Chuan Chu, and Chi-Min Shu
the endothermic melting belongs to the quasi-AC type [ 4 ].
In this study, vent sizing package 2 (VSP2) and thermalactivitymonitorIII (TAMIII) were used to analyze the thermokinetic parameters and safety indices. VSP2 is an adiabatic
goals of this study were to obtain reliably accurate thermokinetic parameters that can be applied to industrial manufacturing processes and incompatible reactions to avoid a reaction disaster.
The thermalactivitymonitorIII (TAMIII) [ 8 , 9
Authors:J.-M. Tseng, M.-Y. Liu, S.-L. Chen, W.-T. Hwang, J.-P. Gupta, and C.-M. Shu
Methyl ethyl ketone peroxide (MEKPO) is an unstable material above certain limits of temperature, decomposing into chain reactions
by radicals. The influence of runaway reactions on this basic characteristic was assessed by evaluating kinetic parameters,
such as activation energy (Ea), frequency factor (A), etc., by thermal activity monitor III (TAM III). This was done under three isothermal conditions of 70, 80, and 90 °C,
with MEKPO 31 mass% combined with nitric acid (HNO3 6 N) and sodium nitrate (NaNO3 6 N). Nitric acid mixed with MEKPO gave the maximum heat of reaction (△Hd) and also induced serious reactions in the initial stage of exothermic process under the three isothermal temperatures. The
time to maximum rate (TMR) also decreased when HNO3 was mixed with MEKPO. Thus, MEKPO combined with HNO3 6 N forms a very hazardous mixture. Results of this study will be provided to relevant plants for alerting their staff on
adopting best practices in emergency response or accident control.
Authors:Shang-Hao Liu, Chun-Ping Lin, and Chi-Min Shu
liquid organic peroxides.
Moreover, the microcalorimeter, thermalactivitymonitorIII (TAMIII), was applied to detect and record the exothermic activity of CHP, DTBP, and TBPB under isothermal conditions at the temperature range of 80–110 °C
Authors:Lung-Chang Tsai, Yun-Ting Tsai, Chun-Ping Lin, Shang-Hao Liu, Tsung-Chih Wu, and Chi-Min Shu
examined using a thermal dynamic calorimeter (differential scanning calorimetry, DSC) and isothermal microcalorimeter (thermalactivitymonitorIII, TAMIII) to evaluate basic exothermic decomposition and various thermokinetic parameters. Furthermore
Authors:S. Lin, J. Tseng, M. Lee, T. Wu, and C. Shu
Styrene is an important chemical in the petrochemical industry. In recent years, there have been sporadic releases, runaway
reactions, fires, and thermal explosion accidents incurred by styrene and its derivatives worldwide. The purpose of this study
was to estimate the impact of styrene and its derivatives of α-methylstyrene (AMS) and trans-β-methylstyrene (TBMS) contacting with benzaldehyde. Experiments were carried out to evaluate the thermokinetic parameters
estimated by differential scanning calorimetry (DSC) and thermal activity monitor III (TAM III). TAM III was used to determine
the fundamental thermokinetics under various isothermal temperatures, 80, 90 and 100°C. This autocatalytic reaction was demonstrated
in thermal curves. After styrene was contacted with benzaldehyde, the exothermic onset temperature (T0) and the total heat of reaction (Qtotal) were altered by DSC tests. When benzaldehyde is mixed with AMS and TBMS, the reaction time will be shorter but the enthalpy
reduced, as revealed by TAM III tests.
As AMS and TBMS, respectively, were contacted with benzaldehyde, both exothermic phenomena were changed during the reaction
excursion. According to the results of this research, an operator should dictate the oxygen concentration in order to avoid
any potential hazards during handling and transportation.
Authors:J.-J. Peng, S.-H. Wu, H.-Y. Hou, C.-P. Lin, and C.-M. Shu
Over 90% of the cumene hydroperoxide (CHP) produced in the world is applied in the production of phenol and acetone. The additional
applications were used as a catalyst, a curing agent, and as an initiator for polymerization. Many previous studies from open
literature have verified and employed various aspects of the thermal decomposition and thermokinetics of CHP reactions. An
isothermal microcalorimeter (thermal activity monitor III, TAM III), and a thermal dynamic calorimetry (differential scanning
calorimetry, DSC) were used to resolve the exothermic behaviors, such as exothermic onset temperature (T0), heat power, heat of decomposition (ΔHd), self-heating rate, peak temperature of reaction system, time to maximum rate (TMR), etc. Furthermore, Fourier transform
infrared (FT-IR) spectrometry was used to analyze the CHP products with its derivatives at 150 °C. This study will assess
and validate the thermal hazards of CHP and incompatible reactions of CHP mixed with its derivatives, such as acetonphenone
(AP), and dimethylphenyl carbinol (DMPC), that are essential to process safety design.