1.0 m x 1.0 m cross-section of the lignite in a pilot-scale fluidized bed combus

Question

1.0 m x 1.0 m cross-section of the lignite in a pilot-scale fluidized bed combustion unit, the data required is as follows. 70% of the active portion of the combustion takes place in bed. Domestic lignite coal used as fuel in boiler producing saturated steam.
Hs= 0,5m, Hml = 0,53 m Uo = 6 Umf
Hf = 0,58 m s = 0,75
Bed material: sand and ash s = 1950 kg/m³
Tbed = 850ºC, Tbg = 240 ºC Nnozul = 300 units
Tort = 20 ºC Dnozul = 6 mm
Hu = 4500 kcal/kg Ndelik = 8 units / nozzle
S = 2,0% is on Ddelik = 4 mm
W = 20%,V=35%,Cfix=23%, A=22% CaCO4 = 85% (rate of homogeneity of limestone)
Tbuh = 350 ºC, Pbuh = 20 bar
The above notes are fixed values that are not needed and will be primarily used in the calculations the values given above. Failure to accept the analysis required by other than the given value.
Cumulative Weight :      Cap range :
50 50-75
120 75-200
190 200-280
225 280-350
310 350-510
250 510-650
120 650-870
Quest is Calculate the mean particle size (mm) and the fraction of bed space Minimum Fluidization conditions

Explanation / Answer

u can solve it using this link http://www.doria.fi/bitstream/handle/10024/72463/isbn%209789522651617.pdf?sequence=1

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