Pyrolysis produces solids ( char ) , condensable liquids ( tar ) , and incondensable gasses .
It differs from other processes like combustion and hydrolysis in that it usually does not involve the addition of other reagents such as oxygen ( O2 , in combustion ) or water ( in hydrolysis ) .Cory A. Kramer , Reza Loloee , Indrek S. Wichman and Ruby N. Ghosh , 2009 , Time Resolved Measurements of Pyrolysis Products From Thermoplastic Poly-Methyl-Methacrylate ( PMMA ) ASME 2009 International Mechanical Engineering Congress and Exposition
Pyrolysis