| 摘要 |
The present invention relates to an indirect heating type pyrolysis unit, which decompose waste (raw material) into gas, oi, and char etc. by heating indirectly under oxygen free atmosphere. The pyrolysis unit has vacuum keeping means for the normal pyrolysis by preventing destroy of vacuumed state due to high temperatures or temperature changes. A pyrolysis chamber, having a screw axis which has a screw wing inside of a heating chamber having heating means, is installed for the indirect heating type pyrolysis. A cooling-vacuum-keeping apparatus uses fluid for cooling and fluid for vacuuming between the screw axis and an operator to prevent destroy of the vacuumed state. An elastic vacuum keeping apparatus uses an elastic coupling for controlling the length of the screw axis depending on the temperature change. The vacuumed keeping means comprises one between the cooling-vacuum-keeping apparatus and the elastic vacuum keeping apparatus. |
