Evaluation of clean coal technologies with coals of India
- Central Fuel Research Institute, Dhanbad (India)
World over concerted efforts are being made to develop technologies for the generation of power from coals that are sustainable from the point of regulations likely to come up with regard to environmental protection. The key issue concerns the reduction of specific emissions of oxides of particularly carbon, besides that of sulfur and nitrogen. Technologies aiming at the reduction of specific emissions of carbon dioxide intend to overcome the barrier of Carnot cycle efficiency of conversion of thermal energy to electrical power. All these technologies employ dual cycle of a gas turbine at a high pressure and a steam cycle at relatively a low pressure. They however fall into two main classes involving either a gasification route or totally on combustion under pressure. At present there are several such technologies being pursued for large scale demonstration with the involvement of the Department of Energy and the industries in USA. However, these technologies are developed to use low ash high sulfur coals of west compared to high ash low sulfur coals of Gondwna origin found in India and south Africa. In this paper the adaptability and the relative merits of these technologies for such high ash coals are addressed. From the studies carried out using Aspen simulator, it is seen that the technologies involving combustion alone is less sensitive to variation in coal quality, while inherent quality of coal controls the conversion efficiency more than the dilution effect of ash. Pressurised fluid bed combustion among other technologies deserve to be pursued.
- Research Organization:
- Coal and Slurry Technology Association, Washington, DC (United States)
- OSTI ID:
- 585297
- Report Number(s):
- CONF-980309-PROC.; TRN: 98:001614-0025
- Resource Relation:
- Conference: 23. international technical conference on coal utilization and fuel systems, Clearwater, FL (United States), 9-13 Mar 1998; Other Information: PBD: 1998; Related Information: Is Part Of The proceedings of the 23rd International Technical Conference on Coal Utilization and Fuel Systems; Sakkestad, B.A. [ed.]; PB: 1143 p.
- Country of Publication:
- United States
- Language:
- English
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