Dorokhov Vadim V, Nyashina Galina S, Strizhak Pavel A
Heat and Mass Transfer Laboratory, National Research Tomsk Polytechnic University, 30 Lenin Avenue, Tomsk 634050, Russia.
Heat and Mass Transfer Laboratory, National Research Tomsk Polytechnic University, 30 Lenin Avenue, Tomsk 634050, Russia.
J Environ Sci (China). 2024 Mar;137:155-171. doi: 10.1016/j.jes.2023.02.050. Epub 2023 Mar 15.
A wide range of wastes can potentially be used to generate thermal and electrical energy. The co-combustion of several types of waste as part of water-containing waste-derived fuels is a promising method for their recovery. In this research, we use thermogravimetric analysis and differential scanning calorimetry to study the thermal behavior and kinetics of coal slime, biomass, waste oils, and blends on their basis. We also analyze the concentrations of gaseous emissions. The results show that biomass, oils, and coal slime significantly affect each other in the course of their co-combustion when added to slurry fuels. The preparation of coal-water slurry based on slime and water reduced the ignition and burnout temperature by up to 16%. Adding biomass and waste oils additionally stimulated the slurry ignition and burnout, which occurred at lower temperatures. Relative to dry coal slime, threshold ignition temperatures and burnout temperatures decreased by 6%-9% and 17%-25%, respectively. Also, the use of biomass and waste oils as part of slurries inhibited NO and SO emission by 2.75 times. According to the kinetic analysis, added biomass and waste turbine oil provide a 28%-51% reduction in the activation energy as compared to a coal-water slurry without additives.
多种废物都有潜力用于产生热能和电能。将几种类型的废物作为含水废物衍生燃料的一部分进行共燃烧是回收这些废物的一种有前景的方法。在本研究中，我们使用热重分析和差示扫描量热法来研究煤泥、生物质、废油及其混合物的热行为和动力学。我们还分析了气体排放物的浓度。结果表明，当生物质、油类和煤泥添加到水煤浆燃料中进行共燃烧时，它们在燃烧过程中会相互产生显著影响。基于煤泥和水制备水煤浆可使着火和燃尽温度降低高达16%。额外添加生物质和废油会进一步促进水煤浆的着火和燃尽，且着火和燃尽发生在更低的温度下。相对于干燥煤泥，着火阈值温度和燃尽温度分别降低了6% - 9%和17% - 25%。此外，将生物质和废油作为水煤浆的一部分使用可使NO和SO排放量降低2.75倍。根据动力学分析，与无添加剂的水煤浆相比，添加生物质和废涡轮机油可使活化能降低28% - 51%。
