| Contents Notes |
The Shawnee lime/limestone computer model was developed by Bechtel National, Inc. and the Tennessee Valley Authority (TVA) to model lime/limestone wet-scrubbing flue gas desulfurization (FGD) systems and is capable of projecting comparative investment and revenue requirements for these systems. The computer model has been developed to permit the rapid estimation of relative economics of these systems for variations in process design alternatives (i.e., limestone versus lime scrubbing, alternative scrubber types, or alternative sludge disposal methods), variations in the values of independent design parameters (i.e., scrubber gas velocity, liquid-to-gas ratio, alkali stoichiometry, slurry residence time, reheat temperature, and specific sludge disposal design), and the use of additives (MgO or adipic acid). Although the model is not intended to compute the economics of an individual system to a high degree of accuracy, it is based on sufficient detail to allow the quick projection of preliminary conceptual design and costs for various lime/limestone variations on a common design and costs basis. |
