Dehydrochlorination characteristics of waste PVC wires by thermal decomposition

Sea Cheon Oh; Woo-Teck Kwon; Soo-Ryong Kim

Journal of Industrial and Engineering Chemistry, Vol.15, No.3, 438-441, May, 2009

DOI10.1016/j.jiec.2008.11.010 Export Citation

Dehydrochlorination characteristics of waste PVC wires by thermal decomposition

Sea Cheon Oh^†, Woo-Teck Kwon¹, and Soo-Ryong Kim¹

Department of Environmental Engineering, Kongju National University, 275, Budae-dong, Cheonan, Chungnam, 330-717, Republic of Korea
¹Department of Ceramics Building Materials, Korea Institute of Ceramic Engineering and Technology, Republic of Korea

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In this work, the dehydrochlorination characteristics of waste PVC wires in ASR have been studied by static quartz tube reactor under various reaction temperatures. The effect of CaO additive has been investigated to eliminate HCl obtained from thermal decomposition of waste PVC wires. Also to obtain the overall activation energy of dehydrochlorination reaction of waste PVC wires, the dynamic thermogravimetric analysis (TGA) curve and its derivative were analyzed. From this work, it was found that Friedman method gave the activation energies of 89.1-166.8 kJ/mol, while Ozawa method gave the activation energies of 94.2-118.6 kJ/mol and the activation energy increased as increasing of conversion. The formation of gaseous products significantly was suppressed and the amount of HCl was obviously reduced by addition of CaO.

Keywords:Dehydrochlorination;Thermal decomposition;Waste PVC wires;Kinetic analysis

[References]

Das S, Curlee TR, Rizy CG, Schexnayder SM, Res. Conserv. Recycl., 14, 265 (1995)
Roy C, Chaala A, Res. Conserv. Recycl., 32, 1 (2001)
Day M, Solid Waste Manage., 3, 47 (1997)
Lanoir D, Trouve L, Delfosse D, Froelich D, Kassamaly A, Waste Manage. Res., 15, 267 (1997)
Lee CH, Res. Conserv. Recycl., 20, 207 (1997)
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Caputo DL, J. Environ. Permits, 4, 51 (1995)
Cooney JD, Day M, Wiles DM, J. Appl. Polym. Sci., 28, 2887 (1983)
Ozawa T, Bull. Chem. Soc. Jpn., 38, 1881 (1965)
Jimenez A, Berenguer V, Lopez J, Sanchez A, J. Appl. Polym. Sci., 50, 1565 (1993)
Hong SJ, Oh SC, Lee HP, Kim HT, Yoo KO, Korean Chem. Eng. Res., 37, 515 (1999)
Abbas KB, Sorvik EM, J. Appl. Polym. Sci., 17, 3567 (1973)
Danforth JD, Takeuchi T, J. Polym. Sci.: Polym. Chem. Ed., 11, 2091 (1973)

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[1] Das S, Curlee TR, Rizy CG, Schexnayder SM, Res. Conserv. Recycl., 14, 265 (1995)

[2] Roy C, Chaala A, Res. Conserv. Recycl., 32, 1 (2001)

[3] Day M, Solid Waste Manage., 3, 47 (1997)

[4] Lanoir D, Trouve L, Delfosse D, Froelich D, Kassamaly A, Waste Manage. Res., 15, 267 (1997)

[5] Lee CH, Res. Conserv. Recycl., 20, 207 (1997)

[6] Shen Z, Day M, Cooney JD, Lu G, Briens CL, Bergougnou MA, Can. J. Chem. Eng., 73(3), 357 (1995)

[7] Caputo DL, J. Environ. Permits, 4, 51 (1995)

[8] Cooney JD, Day M, Wiles DM, J. Appl. Polym. Sci., 28, 2887 (1983)

[9] Ozawa T, Bull. Chem. Soc. Jpn., 38, 1881 (1965)

[10] Jimenez A, Berenguer V, Lopez J, Sanchez A, J. Appl. Polym. Sci., 50, 1565 (1993)

[11] Hong SJ, Oh SC, Lee HP, Kim HT, Yoo KO, Korean Chem. Eng. Res., 37, 515 (1999)

[12] Abbas KB, Sorvik EM, J. Appl. Polym. Sci., 17, 3567 (1973)

[13] Danforth JD, Takeuchi T, J. Polym. Sci.: Polym. Chem. Ed., 11, 2091 (1973)