1. The Study of Thermal Destruction and Combustion of Coal and Peat as Components of Pulverized Coal Fuel.
- Author
-
Amdur, A. M., Fedorov, S. A., Forshev, A. A., and Grevtsev, N. V.
- Subjects
- *
COAL combustion , *PULVERIZED coal , *LIGNITE , *PEAT , *SCANNING electron microscopes , *THERMAL analysis - Abstract
The influence of the oxygen content in the gas phase on the thermal destruction and combustion of peat and coals with various degrees of metamorphism were studied using a device for synchronous thermal analysis to optimize the conditions for obtaining pulverized coal fuel. It was found that the thermal destruction rate decreases at higher degrees of metamorphism (e.g., 2.69%/min for peat; 1.48%/min for brown coal; 0.55%/min for lean coal, and 0.30%/min for anthracite). The volatile component release temperature decreases (from 420°C for lean coal to 220°C for peat) and remains approximately the same in the presence of oxygen up to the composition of synthetic air. The structure of peat particles was studied on a scanning electron microscope. They have an elongated shape measuring from 50 to 400 μm in size. The predominant grain structure is cellular, or less often – fibrous and layered. The onset combustion temperature of peat-contained carbon is about 340°C. The processes are accompanied by the release of a significant amount of gases, such as CO2, H2O, H2, SO2, NO, and NO2. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF