- Further development of LEBS should be predicated on at least 50 percent cost sharing with industry to demonstrate its potential to reduce costs below those of current systems with comparable performance.
- *Future investment of DOE resources in first-generation systems should be based on realistic market expectations and value as an entry into new technology with high growth potential. At least 50 percent industry cost sharing should be required to demonstrate private sector confidence in these technologies.
- *Second- and third-generation gasification-based systems should be given the highest priority for new plant applications. Work on all the advanced systems should focus on acquiring the cost, emissions control, and efficiency information needed to select the most promising systems for further development. The limitations of critical components, such as heat exchangers, turbines, and fuel cells, and the timing and probability of technological successes should be taken into account. This process should begin before FY 1996 and should include a rigorous comparative study of the design options.
- The DOE coal program should focus on assessing and solving turbine life problems related to coal-generated trace materials. If limitations caused by trace components are identified, research on special control technologies and on alternative materials resistant to the effects of contaminants should be undertaken.
- DOE should identify research priorities specific to the use of coal-derived gas in fuel cells, such as the effect of contaminants on fuel cell performance and emissions.
Emissions Control Technologies7
- *A critical assessment of hot gas cleanup systems for advanced IGCC and PFBC should be undertaken immediately to determine the likely costs and the ability to meet, in the next three to five years, all requirements for future high-temperature (>1260 °C [>2300 °F]) turbine operation and environmental acceptability.
- Research on control of volatile air toxics for advanced power systems should be initiated, with a priority on those substances that remain in a gaseous phase at typical exhaust gas temperatures (generally >95 °C [>200 °F]). Assessments of current capabilities to control other hazardous air pollutants should also be undertaken.
- Research should be continued on innovative approaches for less costly and more effective control of sulfur and nitrogen emissions in both retrofit and new plant applications.
- Reduction of solid waste emissions from coal use processes should be given a higher priority in the DOE research program, with emphasis on innovative and lower-cost by-product recovery and reuse. An evaluation of by-product