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Lignite Beulah

USA North Dakota Beulah Lignite Gasification ash 31 McCarthy, Hassett and Manz (1986)... [Pg.294]

Figure 1, Electron micrograph of ion-etched Beulah lignite, showing rootlets or other plant debris (5850X). Figure 1, Electron micrograph of ion-etched Beulah lignite, showing rootlets or other plant debris (5850X).
Figure 2, Electron micrograph of woody lithotype of Beulah lignite showing cellular structure (290X). Compare softwood structure in Reference 5. Figure 2, Electron micrograph of woody lithotype of Beulah lignite showing cellular structure (290X). Compare softwood structure in Reference 5.
Figure 5. Decomposed ESCA carbon is spectra of Beulah lignite (—) and polyethylene terephthalate (—). Plot is of a number of electrons per energy in arbitrary units vs. binding energy in electron volts. The lignite spectrum has been corrected for sample charging (11). Figure 5. Decomposed ESCA carbon is spectra of Beulah lignite (—) and polyethylene terephthalate (—). Plot is of a number of electrons per energy in arbitrary units vs. binding energy in electron volts. The lignite spectrum has been corrected for sample charging (11).
Figure 6. Electron micrograph of Beulah lignite showing organic region enriched in sodium (circular structure in lower center of view). Figure 6. Electron micrograph of Beulah lignite showing organic region enriched in sodium (circular structure in lower center of view).
Figure 7. Electron micrograph of pyrite particles intergrown in carbonaceous structure of Beulah lignite, suggesting difficulty of removal by float/sink (150X). Figure 7. Electron micrograph of pyrite particles intergrown in carbonaceous structure of Beulah lignite, suggesting difficulty of removal by float/sink (150X).
Although we were able to obtain satisfactory fits of (3) with n 1 for all of the low-rank PSOC coals discussed below, the scattering data for Beulah lignite obtained with the Bonse-Hart and Beeman systems extended over such a wide Interval of scattering angles that we found that n had to be Increased to 2 in order to obtain a good fit for this curve. [Pg.83]

Beulah lignite on both the Beeman and Kratky systems at the University of Missouri, using the same sample that was studied at the University of North Dakota. As before, all scattering curves were nearly identical except at the largest scattering angles, where the Kratky system showed a higher intensity than the Beeman systems,... [Pg.84]

Figure 4, The scattered intensity for Beulah lignite as measured with the Bonse-Hart and Beeman collimation systems (squares) at the University of North Dakota. The curve was drawn from a least-squares fit of Equation 6, and the points are the corrected scattered intensities. Figure 4, The scattered intensity for Beulah lignite as measured with the Bonse-Hart and Beeman collimation systems (squares) at the University of North Dakota. The curve was drawn from a least-squares fit of Equation 6, and the points are the corrected scattered intensities.
Beulah lignite are given in Table 2. (Table 2 does not give the ultimate analysis for the mineral matter and thus does not provide... [Pg.87]

The total x-ray specific surfaces of Beulah lignite determined at the University of North Dakota and the University of Missouri agree within the estimated uncertainty. For the specific surfaces of the macropores and the transitional pores, the agreement, though still within the estimate uncertainty, is not so close. This greater difference may be a result of the fact that the scattering curves from the Universities of North Dakota and Missouri were determined by fits of Equation (3) with n = 2 and n = 1,... [Pg.88]

A different type of analysis has now provided this information (20) The dimension distributions p(a) of independent spherical scatterers with uniform density and diameter a which produces each of the terms in the sum in Equation (3) can be calculated (19) After obtaining the constants in the sum in Equation (3) by least-squares fits of this equation to the scattering curve measured for Beulah lignite at the University of North Dakota, we used these constants to evaluate the sum of the pore-dimension distribution functions for uniform spheres that are obtained (19) from the terms in the sum in Equation (3) The sum of these pore-dimension distributions was very similar to the power-law distribution given by Equation (4) The fact that we could obtain almost the same power-law dimension distribution by two independent methods suggests that such a distribution may be a good approximation to the pore-... [Pg.90]

Figure 2. Comparison on n-alkane distribution from Beulah lignite, A, and n-alkane distribution from CPU bottoms recycle product, (Beulah lignite feed coal). Figure 2. Comparison on n-alkane distribution from Beulah lignite, A, and n-alkane distribution from CPU bottoms recycle product, (Beulah lignite feed coal).

See other pages where Lignite Beulah is mentioned: [Pg.265]    [Pg.45]    [Pg.50]    [Pg.81]    [Pg.83]    [Pg.84]    [Pg.84]    [Pg.84]    [Pg.89]    [Pg.91]    [Pg.91]    [Pg.91]    [Pg.92]    [Pg.92]    [Pg.93]    [Pg.197]    [Pg.84]   


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