抄録
The chlorine in PVC originates from sodium chloride separated by electrolysis consuming a large amount of electricity. On the other hand, about 1/2 of sodium chloride supplied to soda ash industry is used as a glass additive. To show the potential of utilizing waste PVC and waste glass that have been mainly landfilled, in the present work, it is experimentally demonstrated with a laboratory scale fixed bed reactor that all of the chlorine generated from PVC can be neutralized by sodium in waste glass particles forming NaCl in the range of 450-550°C. SEM and EDS studies confirmed the crystallized salt on the surface of glass particle after reaction. Chlorine content in any of gas, char and tar was lower than that for the blank tests performed without PVC indicating that they can be used as fuels with no corrosion nor the toxic organic halides formation. The formation of NaCl and fuel gas from waste PVC and waste glass makes it possible not only to recover energy that is supplied during separation of NaCl by electrolysis but also to close their nationwide material flow.
