Reactivity of marble wastes for potential utilization in wet flue gas desulphurization

• Autorzy: Altun N. E.

Identyfikatory

DOI

10.5277/ppmp160140

• Języki publikacji: EN

Abstrakty

EN

Wastes of most marble types are distinguished with their superior CaCO3 content and potential to utilize them as an alternative to limestone. Control of SO2 using marble wastes in wet flue gas desulphurization (WFGD) units of coal fired thermal power plants is an important opportunity. In this study, nine types of marble wastes were evaluated in terms of their ability to dissolution (reactivity) in an acidic environment. The reactivity was expressed as fractional conversion with time with respect to the chemical composition and particle distribution of wastes as well as temperature and pH of solution. Dissolution reaction rate constants were also computed. Reactivity of the wastes varied significantly with chemical compositions of the marble types. The same marble type displayed different dissolution profiles as a function of test conditions (fineness, temperature, pH). Higher contents of CaCO3 and Fe2O3 positively influenced dissolution ability and rates, whereas increased MgCO3 content had adverse effects. The changes in particle size, temperature and pH influenced the reactivity. The reactivity increased with decreasing particle size. Also, higher temperature and increased acidity favored dissolution ability of the marble wastes. Our results showed that under optimized conditions marble wastes, having a higher content of CaCO3 and low content of MgCO3, are potential SO2 sorbent alternative.

Słowa kluczowe

EN

marble; reactivity; thermal power production; SO2; desulphurization

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2016
• Tom: Vol. 52, iss. 1
• Strony: 497--509
• Opis fizyczny: Bibliogr. 18 poz., rys., tab.

Twórcy

autor

Altun N. E.

• Middle East Technical University, Mining Engineering Department, 06800, Ankara, Turkey

Bibliografia

• AHLBECK J., ENGMAN T., FALTEN S., VIHMA M., 1995, Measuring the Reactivity of Limestone for Wet Flue-Gas Desulfurization, Chem. Eng. Sci. 50 (7), 1081-1089.
• ALTUN N.E., 2014, Assessment of Marble Waste Utilization as an Alternative Sorbent to Limestone for SO2 Control, Fuel Process. Technol. 128, 461-470.
• BROWN S.R., DEVAULT R.F., WIILIAMS P.J., 2010, Determination of Wet FGD Limestone Reactivity, Electric Power, Baltimore, USA, 1-8.
• CARLETTI C., BJONDAHL F., DE BLASIO C., AHLBECK J., JARVINEN L., WESTERLUND T., 2012, Modeling Limestone Reactivity and Sizing the Dissolution Tank in Wet Flue Gas Desulfurization Scrubbers, Environ. Prog. Sustain. Energ. 32 (3), 663-672.
• DAVINI P., 1992, Behaviour of certain by-products from the manufacture of marble in the desulphation of flue gases, Resour. Conserv. Recy. 6 (2), 139-148.
• DAVINI P., 2000, Investigation into the desulphurization properties of by-products of the manufacture of white marbles of Northern Tuscany, Fuel 79 (11), 1363-1369.
• DUZYOL S., 2015, Evaluation of Flocculation Behavior of Marble Powder Suspensions, Physicochem. Probl. Miner. Process. 51 (1), 5-14.
• GULSUN M. 2003, Reactivity of limestones of different sources for flue gas desulfurization application, MSc Thesis, Graduate School of Natural and Applied Sciences, Mining Engineering, Middle East Technical University, Ankara, Turkey.
• HOSTEN C., GULSUN M., 2004, Reactivity of Limestones from Different Sources in Turkey. Miner. Eng. 17, 97-99.
• KAMINSKI J., 2003, Technologies and costs of SO2-emissions reduction for the energy sector, Appl. Energ. 75, 165-172.
• KUPICH I., GIRCZYS J., 2008, Sludge Utilization Obtained from Zn-Pb Mine Water Treatment, Physicochem. Probl. Miner. Process. 42, 91-106.
• LIANQING Y., JINGJUAN G., 2011, Study on Wet FGD Limestone Quality, Third International Conference on Measuring Technology and Mechatronics Automation, 605-608.
• LUND K., FOGLER S.H., MCCUNE C.C., 1973, Acidization-I. The Dissolution of Dolomite in Hydrochloric Acid, Chem. Eng. Sci., 28, 691-700.
• SHIH S.-M., LIN J.-P., SHIAU G.-Y., 2000, Dissolution Rate of Limestones of Different Sources, J. Hazard. Mater. B79, 159-171.
• SIAGI Z.O., MBARAWA M., 2009, Dissolution rate of South Australian calcium-based materials at constant pH, J. Hazard. Mater. 163, 678-682.
• STUMPF TH., ROEDER A., HENNICKE H.W., 1984, The reaction behavior of carbonate stone dusts in acid solution, more particularly sulphurous acid. Part II: Important influence parameters, and measurement on various carbonate stone dusts for flue gas desulphurization (in German), Zem-Kalk-Gips 37 (9), 454-461.
• UKAWA N., TAKASHINA T., SHINODA N., SHIMIZU T., 1993, Effects of particle size distribution on limestone dissolution in wet FGD process applications, Environ. Prog. 12 (3), 238-342.
• ZHAO J., JIN B., ZHONG Z., 2007, The degree of desulphurization of limestone/gypsum wet FGD spray tower using response surface methodology, Chem. Eng. Technol. 30 (4), 517-522.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.