Apparatus for removal of residues by means of pyrolysis

Electric heating – Heating devices – Combined with container – enclosure – or support for material...

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219200, 1263435R, 134 38, 134105, H05B 100

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042334969

ABSTRACT:
A process and apparatus are provided for pyrolysis cleaning of residues from equipment used in the treatment and processing of synthetic materials, particularly synthetic plastics. The process comprises a first stage in which the equipment to be cleaned is heated in a closed chamber in the absence of air at a temperature above the melting point of the synthetic material from which the residue is left, and a second stage in which the equipment is heated at a higher temperature in the presence of air. The apparatus preferably comprises a slightly inclined, substantially horizontal heating chamber including a drain at the lower end for collecting melted residue, a vent for gases distilled from the residue with means for burning such gases, and an air inlet for introducing air to the chamber during the second stage.

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Bilken, Now: Remove Plastic Deposits from Extruder Parts the Modern Way, SPE Journal, vol. 29, No. 7, Jul. 1973.

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