The Pittsburgh Energy Technology Center of the US Department of Energy (DOE) has contracted with Combustion Engineering, Inc. (ABB CE) to perform work on the ''Engineering Development of Advanced Coal-Fired Low-Emission Boiler Systems'' Project and has authorized ABB CE to complete Phase I on a cost-reimbursable basis. The overall objective of the Project is the expedited commercialization of advanced coal-fired low-emission boiler systems. The specified primary objectives are: (1) NOx emissions not greater than one-third NSPS. (2) SOx emissions not greater than one-third NSPS. (3) Particulate emissions not greater than one-half NSPS. The specific secondary objectives are: (1) Improved ash disposability and reduced waste generation. (2) Reduced air toxics emissions. (3) Increased generating efficiency. The final deliverables are a design data base that will allow future coal-fired power plants to meet the stated objectives and a preliminary design of a commercial generation unit.

An Illinois No. 6 coal was selected as the design coal. A specific source was identified to provide specifications for preliminary design efforts; it is a washed coal having 8% ash, 15.5% moisture, 3.4% sulfur, and 10,800 Btu/lb as received. The alternate coals are a Pittsburgh No. 8 medium sulfur bituminous and a Wyoming subbituminous. Also, a discussion of plant heat rates/efficiency was completed and forwarded to DOE. The key points were: (1) A supercritical cycle at 3500 psig/1000 F is required to meet the contract minimum goal of 38% efficiency, and an advanced steam cycle (4500 psig, 1100 F double reheat) is required to break the 40% level of efficiency with the design coal, assuming well-engineered, but conventional boiler efficiency/auxiliary power; (2) the plant efficiency is sensitive to coal selection, increasing for the medium sulfur coal, but decreasing for the subbituminous.

Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.

Clean Coal Engineering Technology, Second Edition provides significant information on the major power generation technologies that aim to utilize coal more efficiently, and with less environmental impact. With increased coal combustion comes heightened concerns about coal’s impacts on human health and climate change, so the book addresses the reduction of both carbon footprints and emissions of pollutants, such as particulate matter, nitrogen oxides, and mercury. Part 1 provides an essential grounding in the history of coal use alongside coal chemical and physical characteristics, worldwide distribution, and health and environmental impacts. Part 2 introduces the fundamentals of the major coal utilization technologies and examines the anatomy of a coal-fired power plant before going on to provide an overview of clean coal technologies for advanced power generation. Next, users will find a group of chapters on emissions and carbon management that have been extensively enlarged and updated for the second edition, thus reflecting the ever-increasing importance of this area. The final section of the book focuses on clean coal technology programs around the world and the future role of coal in the energy mix. This fully revised and selectively expanded new edition is a valuable resource for professionals, including environmental, chemical, and mechanical engineers who seek an authoritative and thorough one-volume overview of the latest advances in cleaner power production from coal. Provides a thorough, yet readable, one-volume guide to advanced power generation technologies for cleaner electricity production from coal Retains the essential background information on coal characteristics and the fundamentals of coal-fired power generation Presents extensively expanded and updated coverage on technologies for the reduction of pollutants, including particulate matter, sulfur oxides, and mercury Emphasizes carbon capture methods, storage, and emerging technologies for the reduction of carbon footprints, alongside a discussion of coal’s future in the energy mix