Abstract:
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 NOх and SO2 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.
摘要:
广泛的废物可以潜在地用于产生热能和电能。作为含水废物衍生燃料的一部分的几种废物的共燃烧是一种有前途的回收方法。在这项研究中,利用热重分析和差示扫描量热法研究煤泥的热行为和动力学,生物量,废油,并在其基础上混合。我们还分析了气体排放的浓度。结果表明,油,当添加到浆液燃料中时,煤泥和煤泥在共燃烧过程中会产生显着影响。基于煤泥和水的水煤浆的制备使着火和燃尽温度降低了16%。添加生物质和废油额外刺激了浆液的点火和燃尽,发生在较低的温度。相对于干煤泥,阈值点火温度和燃尽温度降低了6%-9%和17%-25%,分别。此外,使用生物质和废油作为浆料的一部分,将NO_和SO2排放抑制了2.75倍。根据动力学分析,与不含添加剂的水煤浆相比,添加的生物质和废汽轮机油的活化能降低了28%-51%。