METHOD FOR CLEANING TUBING AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2017 - IPC B08B9/23 B08B9/27 B08B7/04 

FIELD: machine engineering.

SUBSTANCE: cleaning method includes the action of a jet of low-temperature plasmatron plasma on the surface to be cleaned, gasification and thermal dissociation of the purification products and their subsequent recombination into the simplest molecules of water and carbon dioxide, relative movement of pipes and plasmatrons. The outer surface of the pipe is cleaned with jets of low-temperature plasmatron plasma until melting of the boundary layer between asphaltene deposit inside the pipe and the inner wall of the pipe. The deposits are then removed from the interior of the pipe. After this, a jet plasmatron is injected into the tubing or a pipe is rolled over the jet plasmatron with the possibility of thermodynamic action of the plasma jet on the inner surface of the tubing. The cleaning products of the inner surface of the pipe are extracted through the free end of the pipe to which the gas conduit is connected with the possibility of pumping liquid and gaseous cleaning products of the tubing interior into it.

EFFECT: cleaning of the inner and outer surfaces of tubing with a minimum of waste and environmentally friendly.

27 cl, 6 dwg