WSEAS Transactions on Heat and Mass Transfer
Print ISSN: 1790-5044, E-ISSN: 2224-3461
Volume 14, 2019
Research on Opportunity of Recycling Coal Ash in Ash Dumps for Power Generation
Authors: , ,
Abstract: Before United Nations Framework Convention on Climate Change Treaty, power generation was relying mainly on coal. As a result, large amounts of ash resulting from coal combustion are occupying permanently land throughout the world causing air and soil pollution issues. Such an example is Valea Ceplea (Romania) ash dump, which occupies approximately 50 hectares with a volume of 13 million cubic meters. The ash dump poses critical air pollution issues to the neighbouring populated areas. The ash in this particular dump comes from low quality lignite with high content of humidity and sterile. As a result, the ash contains a significant amount of unburned carbon, which makes it unsuitable for coal ash conventional recycling directions. The paper explores the possibility of using such ash in mixture with coal in conventional steam generation boilers, achieving a triple objective: I. Recycling ash, which becomes suitable for other recycling directions II. Saving coal, which results in significant economic savings related to coal mining, transport and processing and III. Closure of ash dumps, eliminating the environmental impact.
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Pages: 129-136
WSEAS Transactions on Heat and Mass Transfer, ISSN / E-ISSN: 1790-5044 / 2224-3461, Volume 14, 2019, Art. #16