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In figure 4, a flow diagram, including material and energy balance is presented, for the case of Teco Myra coal. Figure 4. Flow diagram with energy and material balance for Teco Myra coal.

Figure 4 In figure 4, a flow diagram, including material and energy balance is presented, for the case of Teco Myra coal. Figure 4. Flow diagram with energy and material balance for Teco Myra coal.

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Figure 1. Coal Storage and Grinding. Figures 1 to 3 present schemes of coal stocking and preparation, char production equipment and gas treatment.
Figure 1. Coal Storage and Grinding. Figures 1 to 3 present schemes of coal stocking and preparation, char production equipment and gas treatment.
Figure 2. Coal Drying, Pyrolysis, and Off Gas Condensation & Char cooling.
Figure 2. Coal Drying, Pyrolysis, and Off Gas Condensation & Char cooling.
Figure 3. Treatment of raw gas.
Figure 3. Treatment of raw gas.
Table 1. Properties and yield of selected coals and char [3, 4]. In table 1, properties and yields of selected coals are presented [3, 4]. Bituminous low-volatile coals have a higher char yield, but they are expensive and scarce. Thermal coal have lower yield but are cheaper and more available. Sub-bituminous coals are cheap, too, but present much lower yield.
Table 1. Properties and yield of selected coals and char [3, 4]. In table 1, properties and yields of selected coals are presented [3, 4]. Bituminous low-volatile coals have a higher char yield, but they are expensive and scarce. Thermal coal have lower yield but are cheaper and more available. Sub-bituminous coals are cheap, too, but present much lower yield.
To estimate the yield of clean gas generated, gas used in the process and gas available for sale, the Teco Myra coal test data are used, see table 2.
To estimate the yield of clean gas generated, gas used in the process and gas available for sale, the Teco Myra coal test data are used, see table 2.
Figure 5. Simplified scheme of process for formed coke NUCOKE™
Figure 5. Simplified scheme of process for formed coke NUCOKE™
Figure 6. Block diagram of process for formed coke NUCOKE'™.
Figure 6. Block diagram of process for formed coke NUCOKE'™.
NUCARBON™ is the char, product of the pyrolysis, with high fixed carbon content. Its main features are compared with anthracite in table 3.
NUCARBON™ is the char, product of the pyrolysis, with high fixed carbon content. Its main features are compared with anthracite in table 3.
Table 4. NUCARBON™ cost. JCARBON™ costs are shown in table 4. Production cost is 111 USD/t; total cost is reduced to zero, as a result of the sales NULITE™ and methane. In tables 5 and 6 project earnings, cash flow along ten years, IRR and ROC are presented.
Table 4. NUCARBON™ cost. JCARBON™ costs are shown in table 4. Production cost is 111 USD/t; total cost is reduced to zero, as a result of the sales NULITE™ and methane. In tables 5 and 6 project earnings, cash flow along ten years, IRR and ROC are presented.
Production costs are estimated for a 50,250 t per year plant. Coking coal and binder cost are an average of 2012 USA cost: Operating cost (labor and services) is estimated on a year 2013 base [6]. NUCOKE™ COST EVALUATION CONCLUSIONS
Production costs are estimated for a 50,250 t per year plant. Coking coal and binder cost are an average of 2012 USA cost: Operating cost (labor and services) is estimated on a year 2013 base [6]. NUCOKE™ COST EVALUATION CONCLUSIONS
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