Performance summaries, coal

A flow diagram for the coal fueled 500 MW class cascaded TSOFC power cycle is presented in Figure 9-12. A brief process description is given below, followed by a performance summary. Selected state point values are presented in Table 9-21. 

Table 9-22 Overall Performance Summary for the Coal Fueled Pressurized SOFC...

One additional source conducted a test on performance at a waste-wood boiler burning TDF that included results on steam generated and boiler efficiency using the heat-loss method for varied fuel mixes.2 Although the test summary notes that emissions testing was done, the results were not obtained. Nevertheless, one of the conclusions of the test report was that TDF had no environmental disadvantages when compared with the supplemental coal used during the tests.2... 

Air emissions testing data from five facilities were evaluated for this report. The results are summarized here, by pollutant. The most extensive testing was performed by WP L, who tested criteria pollutants, heavy metals, dioxins and furans, and other organic compounds. Table 6-2 summarizes test data for all criteria pollutants at WP L.18 Ohio Edison tested particulate, S02, NOx, and lead emissions results from this whole tire test are provided in Table 6-3.12 Illinois Power tested PM, metals, and S02 their emissions data are summarized in Table 6-4.4 In 1979, United Power Association performed two TDF tests at their Minnesota facility, and conducted air emissions tests during the first test burn for particulate, NOx, SOz, sulfuric acid, and chloride.17 These emission results are summarized in Table 6-5.17 Northern States Power tested TDF in their wood-fired utility boiler in 1982, without much success.9 Their emissions data are summarized in Table 6-6.9 Comparisons of the data from these plants are provided in the pollutant specific discussions that follow the Northern States Power data are not included with graphical summaries of the other four facilities, because its boiler is wood fired, while the other four co-fire the TDF with coal. 

In summary, the pressure-filtration technique is a useful and precise analytical tool in performing the solvent classification of certain coal-derived products. The method will not only give meaningful results comparable to continuous, room-temperature Soxhlet extractions but, most importantly, save many hours in the laboratory. We have found it rapid enough to monitor continuous operations. With coal-oil slurry reaction mixtures obtained from high-temperature coal-liquefaction reactions, the solvent classification can be completed in 1 1/2 to 2 hours. 

In summary, the performance of the foam material was affected by many factors, such as foaming agent characteristics (the concentration, the kind and its molecular structure), mixed surfactant, salt, temperature, pH, nanomaterials with surface activity and polymers. We should consider to seek ways to improve foam performance according to the mechanism of these effects of factors, and make full use of all the advantages of foam in the field of fire prevention, such as simple preparation, low cost, few resources consumed and so on. It is proved to be an effective way to improve the effect of coal spontaneous combustion. In addition, we can mix it with other fire prevention material, included nitrogen, sediment and gel to make a mixture. Not only can it save resources, but also it is of significant economic value for its better fire prevention performance than single material. 

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