Experimental research on coal-water slurry atomization and combustion in a flash expansion burner with a thermal power of 200 kW
The aim of this project is to develop a burner adapted to combustible coal-water mixtures whichhave been atomised by expansion on passing through an injection nozzle. The bibliographical study reviews recent research. From the rheological study it follows that only one type of anionic additive can be used. Atomisation trials show the dynamic changes in the various parameters, in particular that of the injection temperature. Analysis of the results leads to the definition of an injector geometry capable of producing CWS droplets with a Sauter mean diameter of approximately 85 microns at 135 C and an injection pressure of 7 bar. Quality of the atomisation and stability of combustion are such that this process of atomisation and combustion of coal-water slurries in a flash-expansion burner can be endorsed. A better carbon yield and reduced NOx need to be attained before any industrial application is contemplated.
Bibliographic Reference: EUR 13324 FR (1989) 143 pp., FS, ECU 8
Record Number: 199110029 / Last updated on: 1994-12-02
Original language: fr
Available languages: fr