| Popis: |
The article presents the results of experimental studies performed for the comparative analysis of factors affecting the concentration of the main gas emissions during the combustion of fuel suspensions obtained from coal enrichment waste. The factors influencing the formation of anthropogenic emissions during the flaring of coal-water fuel suspensions were investigated. Experiments were carried out with coal processing waste, both with and without additives in the form of spent mineral oil. The article shows how the concentration of sulfur dioxide, nitrogen dioxide, and hydrocarbons is affected by the parameters of preparation (particle size, solid-liquid phase ratio, additives of used engine oil) and flame combustion (temperature in the combustion chamber, excess air coefficient, and droplet size after spraying) of fuel suspensions. The ranges of parameters were selected at which the best combustion parameters are observed, based on the data obtained: degree of grinding is less than 100 μm, solid part content in the suspension is from 55 to 60%; combustion temperature is in the range from 950 to 1050° C, droplet size when spraying the suspension is less than 300 μm, additive of waste mineral oil is from 3 to 7 wt.%. and air-fuel ratio from 1.2 to 1.3. |
