| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermally decomposition treatment improved in treatment efficiency or economical efficiency in the thermal decomposition treatment capable of making any combustible scrap including a vinyl chloride based waste plastic harmless and odorless. SOLUTION: At the time of using a closed vessel thermally insulated from outside under non-oxygen or reduced pressure non-oxygen as a thermal decomposition furnace A and thermally decomposing the vinyl chloride based waste plastic, a chlorine-containing waste plastic or the combustible scrap containing the plastic as a material to be treated in the furnace A, CO2 is produced and recovered by discharging the thermal decomposition gas containing HCL generated in the furnace A to the outside of the furnace A and allowing the gas to react with CaCO3 . |
