Flue gas desulfurization by mechanically and thermally activated sodium bicarbonate

• Autorzy: Walawska B. , Szymanek A. , Pajdak A. , Nowak M.

Identyfikatory

DOI

10.2478/pjct-2014-0051

• Języki publikacji: EN

Abstrakty

EN

This paper presents the results of study on structural parameters (particle size, surface area, pore volume) and the sorption ability of mechanically and thermally activated sodium bicarbonate. The sorption ability of the modified sorbent was evaluated by: partial and overall SO₂ removal efficiency, conversion rate, normalized stoichiometric ratio (NSR). Sodium bicarbonate was mechanically activated by various grinding techniques, using three types of mills: fluid bed opposed jet mill, fine impact mill and electromagnetic mill, differing in grinding technology. Grounded sorbent was thermally activated, what caused a signifi cant development of surface area. During the studiem of SO₂ sorption, a model gas with a temperature of 300°C, of composition: sulfur dioxide at a concentrationof 6292 mg/m_n³ oxygen, carbon dioxide and nitrogen as a carrier gas, was used. The Best development of surface area and the highest SO₂ removal efficiency was obtained for the sorbent treated by electromagnetic grinding, with simultaneous high conversion rate.

Słowa kluczowe

EN

flue gas desulfurization; sodium bicarbonate; surface area; conversion rate

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2014
• Tom: Vol. 16, nr 3
• Strony: 56--62
• Opis fizyczny: Bibliogr. 16 poz., rys., tab., wz.

Twórcy

autor

Walawska B.

• Instytut Nawozów Sztucznych, Oddział Chemii Nieorganicznej „IChN” w Gliwicach, ul. Sowińskiego 11, 44-101 Gliwice, Poland

autor

Szymanek A.

• Instytut Zaawansowanych Technologii Energetycznych, Wydział Inżynierii Środowiska i Biotechnologii, Politechnika Częstochowska, ul. J.H. Dąbrowskiego 73, 42-200 Częstochowa, Poland

autor

Pajdak A.

• Instytut Zaawansowanych Technologii Energetycznych, Wydział Inżynierii Środowiska i Biotechnologii, Politechnika Częstochowska, ul. J.H. Dąbrowskiego 73, 42-200 Częstochowa, Poland

autor

Nowak M.

• Instytut Nawozów Sztucznych, Oddział Chemii Nieorganicznej „IChN” w Gliwicach, ul. Sowińskiego 11, 44-101 Gliwice, Poland

Bibliografia

• 1. Kobus, D. (2011). Assessment of air pollution chan ges in Poland over 1997-2009 by using air quality index, Przemysł Chemiczny, 90/2, 200–207.
• 2. Regulation of the Minister of Environment from 22nd of April 2011 on the installation emission standards [Rozporządzenie Ministra Środowiska z dnia 22 kwietnia 2011 r. w sprawie standardów emisyjnych z instalacji], Offi cial Gazette No. 95, 5606, pos. 558.
• 3. Kilgallon, P.J., Simms, N.J. & Oakey, J.E. (2007). Effectiveness of sodium bicarbonate for acid gas removal from waste incinerator flue gas. CWRM, annex CIWM, 8, part 2.
• 4. Keener, T.C. & Davis, W.T. (1984). Study of the re action of SO2 with NaHCO3 and Na2CO3. J.A.P.C.A, 34, 651–654.
• 5. Erdos, E., Mocek, K., Lippert, E., Uchytilova, V., Neuzil, L. & Bejcek, V. (1989). Application of the Active Soda Process for Removing Sulphur Dioxide from Flue Gases, JAPCA, 39, 1206–1209.
• 6. Keener, T.C. & Khang, S. (1993). Kinetics of the sodium bicarbonate – sulfur dioxide reaction. Chem. Eng. Sci. Vol. 48 No. 16, 2859–2865.
• 7. Garding, M. & Svedberg, G. (1988). Modeling of dry injection flue gas desulfurization. JAPCA, 38 (10), 1275–1280.
• 8. Kimura, S. & Smith, J.M. (1987). Kinetics of the sodium carbonate – sulfur dioxide reaction. AIChE Journal 33 (9), 1522–1532.
• 9. US4588569. (1986). Dry injection fl ue gas desulfurization process using absorptive soda ash sorbent.
• 10. Warych, J. (1998). Purification of gases - the processes and apparatus [Oczyszczanie gazów – procesy i aparatura], WNT, Warsaw.
• 11. Szarawara, J. & Jastrząb, K. (2005). The Polish process of purification of combustion gases on carbon sorbents, Przem. Chem. 84/6, 446–449.
• 12. Franc, M. & Thijssen, M. (2011). U.S. Patent No. 7909272, Milling process.
• 13. Nowak, W., Szymanek, P. & Sławiński, K. (2011). Drying of brown coal using electromagnetic mill, conference materials [Suszenie węgla brunatnego przy użyciu młyna elektromagnetycznego], conference materials, Conference within the competition “Funds for Science” [Fundusze dla Nauki] 28.11.2011, Warszawa.
• 14. ISO/DIN13320-1 Particle size analysis. Laser scattering methods, Part 1, General principles.
• 15. International Union Of Pure And Applied Chemistry, Physical Chemistry Division Commission On Colloid And Surface Chemistry Subcommittee on Characterization of Porous Solids (1994). Recommendations For The Characterization Of Porous Solids (Technical Report), Pure & Appl. Chern., Vol. 66, No. 8, pp. 1739–1758.
• 16. Guidelines Alsthrom Propywer-Reactivity index. Alsthrom Propywer (1995).