The present invention concerns a method and an equipment for pre-treatment of
used tires (1) before a pyrolysis process. The invention is characterized
in that said cleaning of each tire (1) is carried out in a closed chamber
(5) with high pressure air jets. Air contaminated with dust and other dirt
particles from said tire (1) is preferably continuously conducted through
an air cleaning device (10) for removing said dust and other dirt particles
from the air, and received cleaned air is fed to a high pressure blower (8)
for producing said high pressure air jets.