DefinePK

Abstract

The object of the study is substandard coals of Kazakhstan and solid organic waste in the form of polymers. The effect of additives of chlorvinyl and polyethylene terephthalate on the energy properties of coal briquettes was researched. When coal fines and chlorvinyl are mixed, the phenomenon of adsorption occurs–spontaneous concentration of chlorvinyl on the surface of coal. According to SEM, gaseous chlorovinyl in the presence of coal is characterized by coarsening of particles into a solid polymer phase with a slight increase in temperature due to adhesion and the formation of larger aggregates. When added to the composition of polyethylene terephthalate briquettes with different concentrations, the calorific value of briquettes increases linearly. Clay was used as a safe binder, preventing coal briquettes from falling apart. The optimization of the composition of coal briquette involved the addition of both clay and polyethylene terephthalate to the composition of briquettes. The presence of these two components will allow to obtain the optimal composition of durable briquettes with a constant calorific value in the range Q = 20-25 kJ / kg.