Process for the decomposition of plastic or paint residues by pyrolysis in a fluidized bed

摘要

A process for the decomposition of plastic or paint residues, in particular polymeric coatings on metal parts, by pyrolysis in a fluidized bed is described in which, in order to render the pyrolysis gases inert, a cooling liquid which comprises the effluent from the dewatering of paint sludge is sprayed into the cavity above the fluidized bed. The use of this effluent as cooling liquid means that not only is the effluent disposed of inexpensively, but additional energy is provided for the thermal incineration following pyrolysis.