Study on the Pressurized Hydrolysis Dechlorination of PVC

The PVC pressurized hydrolysis dechlorination has been studied in an autoclave reactor under different operating conditions such as temperature, reaction time, and alkali concentration. About 95% of the chlorine in PVC can be effectively removed within 2 h at temperature 240 °C in hydrolysis process. The HCl yield increases and residue yield decreases with the increasing of hydrolysis temperature. The structure of residue was analyzed by using FTIR and SEM. It was found that the hydrolysis dechlorination process has advantages over the thermal decomposition of PVC.

[1]  Jinsheng Gao,et al.  Study of the Low Temperature Pyrolysis of PVC , 2002 .

[2]  A. Muto,et al.  Removal of organic chlorine compounds by catalytic dehydrochlorination for the refinement of municipal waste plastic derived oil , 2001 .

[3]  G. Shi,et al.  Poly(ethylene glycol)s catalyzed homogeneous dehydrochlorination of poly(vinyl chloride) with potassium hydroxide , 2001 .

[4]  K. Endo,et al.  Dechlorination of poly(vinyl chloride) without anomalous units under high pressure and at high temperature in water , 2001 .

[5]  M. Ghaemy,et al.  Study of dehydrochlorination of poly(vinyl chloride) in solution and the effect of synthesis conditions on graft copolymerization with styrene , 2000 .

[6]  D. Balköse,et al.  Effects of mixed metal stearates on thermal stability of rigid PVC , 1999 .

[7]  Yoshiyuki Sato,et al.  Decomposition of Ployvinylchloride using Supercritical Water , 1998 .

[8]  J. Behnisch,et al.  Chemical dehydrochlorination of poly(vinyl chloride). Dehydrochlorination by alkali alkoxides , 1991 .

[9]  A. Guyot,et al.  Thermal dehydrochlorination and stabilization of poly(vinyl chloride) in solution: Part V. Influence of structural defects in the polymer , 1990 .

[10]  H. Allcock,et al.  Ring-opening polymerization of methylsilane- and methylsiloxane-substituted cyclotriphosphazenes , 1988 .

[11]  L. Dean,et al.  Mechanism and kinetics of thermo-dehydrochlorination of poly(vinyl chloride) , 1988 .

[12]  W. Schöniger.  Die mikroanalytische Schnellbestimmung von Halogenen und Schwefel in organischen Verbindungen , 1956 .