Normalizing anthropogenic gas emissions from the combustion of industrial waste as part of fuel slurries. (1st April 2022)

• Record Type: Journal Article
• Authors: Akhmetshin, M.R.; Nyashina, G.S.; Strizhak, P.A.
• Is Part Of: Fuel. Volume 313(2022)
• Publication Date: 2022-04-01
• Subjects: Oil sludge -- Combustion -- Emission factor -- Anthropogenic emissions -- Normalizing indicators; Fuel -- Periodicals; Coal -- Periodicals; Coal; Fuel; Periodicals; 662.6
• DOI: 10.1016/j.fuel.2021.122653
• Languages: English
• ISSNs: 0016-2361

Abstract

Highlights: Emissions were normalized relative to the fuel mass, time, energy, maximum concentrations. Combustion of the slurry derived from oil sludge with water reduces the emissions. Oil sludge without additives has the highest emission mass factors. SO2 and NO emission normalized relative to thermal energy are minimal for oil sludge with water. The most promising fuel from those considered is the slurry of oil sludge with water. Abstract: The use of traditional energy carriers results in large amounts of waste, of petroleum origin, in particular. Such waste is highly hazardous when stored in open waste piles or discharged into the soil. It is, therefore, rational to combust it as part of fuel compositions with specialized additives. These additives are utilized to solve specific environmental, energy, social and other tasks. Emission factors were calculated, corresponding to gas emissions, relative to: (i) mass of the fuel to be burned; (ii) maximum/average emissions released into the atmosphere per time; (iii) thermal energy released from combustion; (iv) specific mass emissions of a pollutant per tonne of oil equivalent (toe). The conducted research indicated that the combustion of a slurry derived from oil sludge and water was characterized by the lowest absolute concentrations of carbon, nitrogen and sulfur oxides, which were 7–30%, 9–21% and 41–63% lower, respectively, than those of oil sludge without water. From the considered fuels, the most promising ones by specific normalized factors of SO2 and NO emission were slurries derived from oil sludge and water, but emission factors of CO2 were lower for oil sludge without additives. The information obtained in this study makes it possible to assess the emission characteristics of fuel combustion, taking into account a combination of factors (combustion temperature, fuel mass, etc.), and also makes it possible to compare the results with other studies. Research results show great prospects of using oil sludge as part of composite liquid fuels at power plants.