A STUDY OF THERMAL REACTIONS OF COAL WITH POLYAMIDES

Abstract

Kinetics of thermal reactions of coal with polyamide 6 by TGA and DSC methods was studied. In the range of about 350 500 °C the thermal degradation of coal proceeds, and gas and tar are evolved. Simultaneously, the thermal decomposition of polyamide 6 occurs and mainly s-caprolactam is formed. The ε-caprolactam formation is promoted by reaction water from the coal degradation and coal hydrogen, because coal is a strong H-donor. Under high-temperature conditions carbon oxides, ammonia, aliphatic hydrocarbons, simple aromatics, and stable oil are formed during copyrolysis of coal with polyamide 6. The yields of gas and tar from copyrolysis with waste polyamides are then higher in comparison with those from pyrolysis of coal alone.