FOERFARANDE OCH ANORDNING FOER AVLAEGSNANDE AV FLYKTIGA AEMNEN FRAON ETT UTGAONGSMATERIAL

摘要

A method and apparatus for pyrolysis employ an elongate housing of heat-resistant material (10, 11, 12) having at one end an inlet (23) and at the opposite end an outlet (31) and air locks (24) associated with the inlet and the outlet. An auger (30) or a flow of molten lead is used to feed material along the housing from the inlet to the outlet, and heaters (35) apply heat to the exterior of the housing to heat the material during its displacement along the housing. The housing has at least one outlet opening (42) for the outflow of substances gasified by the heating of the material. The invention effects efficient heating of the material and avoids the build up of high gas pressure within the apparatus.