Ash characteristics

Ash Characteristics. The elemental ash composition of biomass waste and municipal soHd waste differs dramatically from that of coal (qv). ... 

Thermal Heat content Volatile matter content Ash characteristics Ash content Halogen content Moisture content Heavy metals content... 

The biofuel ash characteristics defined by the composition (major and minor components) and fusion temperatures were also different (Table 2). All radiata pine wood residue biofuels (RPB, RPO and RPA) showed higher SiOj contents but lower... 

Biomass fuels are highly variable in their characteristics. Information is critical on fuel quality, combustion performance and ash characteristics to optimise combustion system design. 

Coal Industry Advisory Board Committee on Coal Quality and Ash Characteristics, G. Blackmore, Chairman Old Ben Coal Co., Lexington, KY, 1984. 

T. F. Wall, A. Lowe, L. J. Wibberley, T. Mai-Viet, and R. P. Gupta, Fly Ash Characteristics and Radiative Heat Transfer in Pulverized-Coal-Fired Furnaces, Combustion Science and Technology, 26, pp. 107-121,1981. 

Mehta, P.K. (1985) Influence of fly ash characteristics on the strength of Portland-fly ash mixtures. Cement and Concrete Research 15,669-644. 

Reeves, N.K. (1991) Investigations of fly ash characteristics and behaviours for use in extended oil well cements, m Proceedings 13th International Conference on Cement Microscopy, Tampa, pp. 86-100,... 

Ash analysis is also an important characteristic for the K-T gasifier, because it affects the refractory used in the gasifier. Ash characteristics will influence the maximum operating temperature, which, in turn, affects carbon conversion (2). 

Petroleum coke is, inherently, a low ash fuel however the ash chemistry of petroleum coke remains significant due to issues of slagging and fouling, and trace metal emissions. Bryers [4, 5] has reported general ash characteristics for petroleum cokes as a fiinction of coking method. 

Cofiring TDF with western coal did result in an increase in SO2 emissions however, a blend of 85% coal/10% biomass/5% TDF achieved about the same level of SO2 emissions as the coal alone. Opacity certainly did not increase and may have actually decreased during the cofiring and trifiring tests relative to baseline coal-only testing. Ash characteristics were essentially unchanged between the baseline, cofired and trifired tests. 

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