Naslov
Selection of Sustainable Technologies for Combustion of Bosnian Coals

Autori
Kazagić, Anes ; Smajević, Izet ; Duić, Neven

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
CD Proceedings of the 5th Dubrovnik Conference on Sustainable Development of Energy, Water and Environment Systems / - , 2009

Skup
5th Dubrovnik Conference on Sustainable Development of Energy, Water and Environment Systems

Mjesto i datum
Dubrovnik, Hrvatska, 29.09.2009. - 03.10.2009

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Coal; Combustion; Sustainability; Economic Indicators; Environmental indicators

Sažetak
Improving existing and introducing advanced coal combustion technologies, with a view to increasing efficiency and improving environmental performance, is a key challenge for coal power sector. Due to increase of the world energy consumption and rising problem of global worming and climate change, the attention is focused on sustainability of coal-based electricity generation. Sustainability assessment is recommended to be performed and offered to decision makers when new application in coal-based energy system is under consideration. Under such an assessment, the system is considered from economical, environmental, technological, social, political, ethical and some other aspects. The aim of that procedure is providing an environmental friendly, economically feasible and socially balanced coal-based system. This paper deals with optimization of coal combustion conditions to support selection a sustainable combustion technology and an optimal furnace and boiler design. A methodology for optimization of coal combustion conditions is proposed and demonstrated on the example of Bosnian coals. The properties of Bosnian coals varies widely from one coal basin to the next and even between coalmines within the same basin, while very high percentage of ash (particularly in Bosnian brown coal) makes clear certain differences between Bosnian coal types and other world coal types, providing a strong argument for investigating specific problems related to the combustion of Bosnian coals, as well as ways to improve their combustion behaviour. In this work, options of energy system (boiler) with different process temperatures, corresponding to the different combustion technologies ; PF combustion (slag tap or dry bottom furnace) and fluidized bed combustion, are under consideration for the coals tested. Sustainability assessment, based on calculation economic and environment indicators, is used for the optimization in combination with common Low Cost Planning (LCP) method. The total costs in the lifetime are presented by General index of total costs, calculated on the base of agglomeration of basic economic indicators and the economic indicators derived from environmental indicators. So, proposed methodology is based on identification of those combustion technologies and combustion conditions for coals tested which the total costs in life time of the system under consideration are lowest, provided that all environmental issues of the energy system is fulfilled during the lifetime. Inputs for calculation of the sustainability indicators are provided by the measurements on an experimental furnace with variation process temperature, supported by good praxis from the power plants which use the fuels tested and by thermal calculations of the energy system.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA