Combustion of pulverized coal in high temperature preheated air

Volatile production during preignition heating. Final technical report, 15 September 1980-30 September 1982

“…which gives a temperature rise in the gas phase at the end of the irradiation zone, assuming uniformity throughout the gas, of (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12) or As can be seen from Figure 2-10, the temperature rise is only significant for the low heating rate, 10 4 K/s, U1e higi"er heating rates giving an almost negligible increase in gas temperature.…”

“…we can obtain a resolution criterion for the experiment. The irradiated zo·ne has a length in the flow direction p L = 0'0 (2)(3)(4)(5)(6)(7)(8) This is shown in Figure 2-9,. ,for a 10 kW laser.…”

“…Thus we have a figure of merit for time resolved investigation of the pyrolysis process, given by n = L/LRFS . (2)(3)(4)(5)(6)(7)(8)(9) This parameter is plotted against heating rate (T) and laser power in…”

“…The mass loading is further influenced by heat tran::.rer to tt 1 e gas and by any reaction exothermicity resulting from addition of a low concentration of oxygen to the carrier system. Approximating the heat transfer by pure conduction, under conditions of constant temperature gradient, the heat flux to the gas (assuming the gas temperature does not rise significantly) is given by (2)(3)(4)(5)(6)(7)(8)(9)(10)(11) and as TP = Tt + .Tg, we .have…”

Two-step rapid sulfur capture. Final report

“…SO2 mixing studies were performed during Phase IA to check quencWmixing section time [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] scales. With no activation duct modules in place, which corresponds to 0 ms activation time, SO2…”