Multifactor analysis of energy utilization of coal, oil and vegetable waste in the composition of fuel mixtures

The results of a comprehensive assessment of the characteristics of combustion of fuels based on coal sludge with the addition of (5% wt.) waste turbine oil and wood biomass using the method of multivariate (multicriteria) analysis are presented. The results of experimental studies of the processes of ignition and combustion of fuels, data on the calorific value, ash content, cost, composition of flue gases were used. The mixtures were burned in the form of tablets, layers and drops of an aqueous suspension. A positive effect of the use of additives on the indicators of energy, environmental and complex efficiency of coal sludge combustion was noted. The group of fuels burned in the form of pellets is characterized by the minimum indicators of energy, environmental and complex efficiency. The greatest environmental potential was found in fuels burned in the form of droplets of aqueous suspensions. The results of the study confirm the prospects for energy utilization of a wide range of wastes of coal, oil and vegetable origin as part of mixed fuels.