Performance of 500 MW coal fired steam generators
- Bharat Heavy Electricals Ltd., Tiruchirapalli (India)
Bharat Heavy Electricals Limited in association with ABB-CE, USA has engineered and supplied twelve 500 MW units. The first steam generator is in service from 1984. The design of these 500 MW steam generators was based on the experience of the 200 and 210 MW units. The Indian coals have high ash content, lower calorific value and high moisture experienced during rainy season. Because of this there were a few performance problems in the first few units. The experience of assessing and improving the performance of these steam generators is the main theme of this paper. The combustion characteristics of the Indian coals are good. However, the high ash content and low calorific value associated with high moisture required specific changes in steam generator design. Tests done in different units with different coals helped in analyzing the problem. The analysis of the test data resulted in engineering changes. The modifications done improved the performance of these units. It also helped in updating design standards and methods. The paper gives an outline of the key aspects to look for in steam generator design for high ash Indian coals. The paper also outlines the testing and performance analysis methods used.
- OSTI ID:
- 389857
- Report Number(s):
- CONF-960426-; TRN: IM9646%%142
- Resource Relation:
- Conference: 58. annual meeting of the American power conference, Chicago, IL (United States), 9-11 Apr 1996; Other Information: PBD: 1996; Related Information: Is Part Of Proceedings of the American Power Conference. Volume 58-II; McBride, A.E. [ed.]; PB: 886 p.
- Country of Publication:
- United States
- Language:
- English
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