Modeling of Integrated Environmental Control Systems for Coal-Fired Power Plants

An overview of the current IECM structure appears in Figure 1-1. Briefly, the IECM was designed to permit the systematic evaluation of environmental control options for pulverized coal-fired (PC) power plants. Of special interest was the ability to compare the performance and cost of advanced pollution control systems to “conventional” technologies for the control of particulate, SO2 and NOx. Of importance also was the ability to consider pre-combustion, combustion and post-combustion control methods employed alone or in combination to meet tough air pollution emission standards. Finally, the ability to conduct probabilistic analyses is a unique capability of the IECM. Key results are characterized as distribution functions rather than as single deterministic values. In this report we document the analytical basis for several model enhancements and also document updates to various process technology models described in Reference (1). Chapter 2 begins with a summary of refinements to the base power plant model representing conventional technology. Chapters 3 through 7 describe several improvements for advanced post-combustion control methods, including new models of byproduct recovery systems. Finally, Chapters 8 to 10 present several new models for pre-combustion control methods employing advanced coal beneficiation techniques. Illustrative examples of model applications are contained within the various chapters. An additional Case study illustrating the use of the IECM for probabilistic analyses and process evaluations appears in the Appendix