A process for the purification of exhaust gases, in particular of a vacuum pyrolysis plants

摘要

A process for purifying exhaust gases, especially from vacuum pyrolysis installations by means of the extraction of the exhaust gases and their combustion with a supply of air. Immediately after their formation, the exhaust gases are subjected to complete combustion with a controlled air supply and an underpressure of 0.5 to 0.95 bar (500 to 50 mbar absolute) generated by a vaccum pump, whereupon the gaseous reaction products are cooled to 10 to 25 DEG C to prevent damage to the vacuum pump (6) and then the cooled gaseous reaction products are extracted by the vacuum pump.