Naslov
Calcination Modelling for Cement Industry – Latest Development in FIRE

Autori
Mikulčić, Hrvoje ; von Berg, Eberhard ; Vujanović, Milan ; Priesching, Peter ; Tatschl, Reinhard ; Duić, Neven

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

Izvornik
Digital Proceedings of The AVL Advanced Simulation Technologies (AST) International User Conference 2013, Graz, Austria, 2013 / - , 2013

Skup
AVL Advanced Simulation Technologies (AST) International User Conference 2013

Mjesto i datum
Graz, Austrija, 18.06.2013. - 20.06.2013

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
CFD; Calciner; Calcination Process; Coal Combustion; Cement Production

Sažetak
Cement industry is one of the leading producers of the greenhouse gases. There are two thermo-chemical processes in the process of cement production which contribute to these emissions. One is the combustion of the solid fuels and the other is the thermal decomposition of limestone, widely known as the calcination process. Because of the effect of global warming and particularly because carbon dioxide is one of the primary greenhouse gases, in-depth understanding of these processes is relevant for the development of effective cement production and reduction of pollutant emissions. Recently, researchers have improved the fuel consumption of the overall cement manufacturing process by dividing the calcination and the clinkering process into two separate furnaces. The calcination process is performed in a furnace called calciner, and the clinkering process is performed in a rotary kiln. A calciner is a furnace used prior to the rotary cement kiln, where the limestone, pulverized coal and rotary kiln exhaust gases are mixed. Since the usage of a cement calciner in the cement production process is a relatively new technology, calciners are still in the phase of research and development. The purpose of this paper is to present the first phase of the cement calciner's development, which is the CFD simulation of the cement calciner, with implemented mathematical models of the coal combustion and calcination process. From the results gained by these simulations, researchers will have an in-depth understanding of all relevant thermo-chemical reactions in a cement calciner. This in-depth understanding can then be used for the optimization of the calciner's geometry, to have a more efficient production, to lower the pollutant formation and subsequently reduce the greenhouse gases emission.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA