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Manual on the Federal Budget Process

Description: The purpose of this manual is to assist users of Federal budget information in understanding how the process works and how data are to be interpreted.
Date: March 31, 1987
Creator: Schick, Allen; Keith, Robert & Davis, Edward
Partner: UNT Libraries Government Documents Department

Manual on the Federal Budget Process

Description: The purpose of this manual is to assist users of Federal budget information in understanding how the process works and how data are to be interpreted.
Date: March 31, 1987
Creator: Schick, Allen; Keith, Robert & Davis, Edward
Partner: UNT Libraries Government Documents Department

Alternative Fuel for Portland Cement Processing

Description: The production of cement involves a combination of numerous raw materials, strictly monitored system processes, and temperatures on the order of 1500 °C. Immense quantities of fuel are required for the production of cement. Traditionally, energy from fossil fuels was solely relied upon for the production of cement. The overarching project objective is to evaluate the use of alternative fuels to lessen the dependence on non-renewable resources to produce portland cement. The key objective of using alternative fuels is to continue to produce high-quality cement while decreasing the use of non-renewable fuels and minimizing the impact on the environment. Burn characteristics and thermodynamic parameters were evaluated with a laboratory burn simulator under conditions that mimic those in the preheater where the fuels are brought into a cement plant. A drop-tube furnace and visualization method were developed that show potential for evaluating time- and space-resolved temperature distributions for fuel solid particles and liquid droplets undergoing combustion in various combustion atmospheres. Downdraft gasification has been explored as a means to extract chemical energy from poultry litter while limiting the throughput of potentially deleterious components with regards to use in firing a cement kiln. Results have shown that the clinkering is temperature independent, at least within the controllable temperature range. Limestone also had only a slight effect on the fusion when used to coat the pellets. However, limestone addition did display some promise in regards to chlorine capture, as ash analyses showed chlorine concentrations of more than four times greater in the limestone infused ash as compared to raw poultry litter. A reliable and convenient sampling procedure was developed to estimate the combustion quality of broiler litter that is the best compromise between convenience and reliability by means of statistical analysis. Multi-day trial burns were conducted at a full-scale cement plant with alternative ...
Date: June 30, 2012
Creator: Schindler, Anton K.; Duke, Steve R.; Burch, Thomas E.; Davis, Edward W.; Zee, Ralph H.; Bransby, David I. et al.
Partner: UNT Libraries Government Documents Department