Thermal Hazard Evaluation of Cumene Hydroperoxide (CHP) Using Isothermal and Heating Method

Page 1

Thermal Hazard Evaluation of Cumene Hydroperoxide (CHP) Using Isothermal and Heating Method Sheng-Hung Wu*1, Pao-Wen G. Liu2, Ying-Ting Lin3, Chiao-Li Shih4, Tung-Tin Wu5 Department of Tourism and Hospitality, TransWorld University, 1221, Zhennan Rd., Douliou, Yunlin 640, Taiwan, ROC 1,4

Deparment of Safety Health and Environmental Engineering, Chung Hwa University of Medical Technology, Tainan, Taiwan, ROC 2,3

Green Carbon Science Technology Co., Ltd., Kaohsiung, Taiwan, ROC

5

wushprofessor@gmail.com; 2graceliu@mail.hwai.edu.tw

*1

Abstract Cumene hydroperoxide (CHP) is a explosive chemical in the chemical industry in Taiwan that can be identified as organic peroxide (OP). Therefore, CHP can be manufactured using cumene mixed with oxygen or air (21% O2) in the oxidation tower and can be an important chemical and hazardous chemical for dicumyl peroxide (DCPO) process, acrylonitrile-butadienestyrene (ABS) process, and phenol and acetone manufacturing plant. Since 1981-2010 in Taiwan, plenty of thermal explosion accidents of CHP were recorded and analyzed in Taiwan. Therefore, this study was applied to analyze thermal hazard of CHP using an isothermal calorimeter. The reaction order (n) was calculated to be 0.5 that can be used to simulate a thermal explosion accident and to determine thermokinetics in the CHP oxidation process. This study was applied to analyze thermal hazard of CHP in the oxidation tower using the differential scanning calorimetry (DSC) with isothermal and heating method. The temperature of an exothermic reaction of 30, 80, and 88 mass % CHP can be analyzed less than 90℃ in the oxidation tower. The critical temperature of 30, 80, and 88 mass% CHP can be evaluated less than 100℃. Keywords Cumene Hydroperoxide (CHP); Organic Peroxide (OP); Acrylonitrile-butadiene-styrene (ABS); Reaction Order (n); Exothermic Reaction

Introduction Benzene and propylene are used to produce cumene in the traditional process in Taiwan. Therefore, cumene mixed with air or oxygen in six oxidation towers has been employed to yield various cumene hydroperoxide (CHP) concentrations in the chemical industries [1]. Cumene is a reactant and can be oxidized to produce CHP at temperature in the 80–120°C and at a pressure ranging from atmospheric to 700 kPa [1]. The first oxidation tower can be applied to produce 20–30 mass% CHP using two flow process. Therefore, 60 mass% CHP can be concentrated in second oxidation tower. Finally, 80% CHP is concentrated in third oxidation tower that can be used as the initiator of acrylonitrile-butadiene-styrene (ABS) process in Taiwan [2]. During 1981-2010 in Taiwan, CHP has caused eight accidents including oxidation tower, reactor, storage tank, and transportation. Especially, thermal explosion of CHP in the oxidation tower in 2010 in Taiwan has occurred and was investigated. This study was applied to analyze thermal hazard of CHP in the oxidation and to evaluate the potential hazard during the operation [3–7]. This study was applied to analyze thermal hazard of CHP in the oxidation tower using the differential scanning calorimetry (DSC) with isothermal and heating method. The temperature of an exothermic reaction of 30, 80, and 88 mass % CHP can be analyzed less than 90℃ in the oxidation tower. The critical temperature of 30, 80, and 88 mass% CHP can be evaluated less than 100℃. International Journal of Engineering Practical Research, Vol. 4 No. 1-April 2015 2326-5914/15/01 103-04 © 2015 DEStech Publications, Inc. doi: 10.12783/ijepr.2015.0401.20

103


Turn static files into dynamic content formats.

Create a flipbook
Issuu converts static files into: digital portfolios, online yearbooks, online catalogs, digital photo albums and more. Sign up and create your flipbook.