Effects of Particle Size and Gas Velocity on Bulk Sulfation of Al2O3 Support in CuO/γ-Al2O3 Sorbent

Kyung Seun Yoo; Soon Kook Kang; Sang Done Kim

Journal of Industrial and Engineering Chemistry, Vol.9, No.6, 722-727, November, 2003

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Effects of Particle Size and Gas Velocity on Bulk Sulfation of Al₂O₃ Support in CuO/γ-Al₂O₃ Sorbent

Kyung Seun Yoo^†, Soon Kook Kang¹, and Sang Done Kim²

Department of Environmental Engineering, Kwangwoon University, Seoul 139-701, Korea
¹Department of Environmental Engineering, Sunmoon University, Asan 336-840, Korea
²Department of Chemical Engineering and Energy & Environment Research Center, Korea Advanced Institute of Science and Technology, Taejon 305-701, Korea

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The effects of particle size and gas velocity on sulfation of alumina support of CuO/γ-Al₂O₃ sorbent have been determined in a thermogravimetric analyzer (TGA). Sulfation rate of alumina support of CuO/γ-Al₂O₃, increases with increasing gas velocity up to 0.2 m/s and then decreases with a further increase in gas velocity. The bulk sulfation rate of alumina support decreases with decreasing particle size and sample weight. The slight increase of gas velocity enhances the sulfation rate via reduction of gas film resistance but the Outward diffusion rate of SO₃ also increases. As a result maximum rate of bulk sulfation appears at about 0.2 m/s. The concentration of SO₃ in pores of CuO/γ-Al₂O₃ pellet and bulk sulfation rate of alumina support decrease with decreasing particle size.

Keywords:CuO/γ-Al₂O₃;sulfation;TGA;diffusion resistance;gas-solid reaction

[References]

Yoo KS, Kim SD, Park SB, Ind. Eng. Chem. Res., 33(7), 1786 (1994)
Jeong SM, Kim SD, Ind. Eng. Chem. Res., 36(12), 5425 (1997)
Jeong SM, Jung SH, Yoo KS, Kim SD, Ind. Eng. Chem. Res., 38(6), 2210 (1999)
Yoo KS, Jeong SM, Kim SD, Park SB, Ind. Eng. Chem. Res., 35(5), 1543 (1996)
Harriott P, Markussen JM, Ind. Eng. Chem. Res., 31, 373 (1992)
Kartheuser B, Hodnett BK, Riva A, Centi G, Matralis H, Ruwet M, Grange P, Passarini N, Ind. Eng. Chem. Res., 30, 2105 (1991)
Dassori CG, Therney JW, Shah YT, AIChE J., 34, 1876 (1988)
Yeh JT, Demski RJ, Strakey JP, Joubert JI, Environ. Prog., 4, 223 (1985)
Cho MH, Lee WK, J. Chem. Eng. Jpn., 16, 127 (1983)
Centi G, Passerine N, Perathoner S, Riva A, Ind. Eng. Chem. Res., 31, 1947 (1992)
Jeong SM, Kim SD, Ind. Eng. Chem. Res., 39(6), 1911 (2000)
Centi G, Passerine N, Perathoner S, Riva A, Stella G, Ind. Eng. Chem. Res., 31, 1963 (1992)
Nam SW, Gavalas GR, Appl. Catal., 55, 193 (1989)
Szekely J, Sohn HY, Evans JW, Gas-Solid Reactions, Academic Press, New York (1976)
Liou TH, Chang FW, Ind. Eng. Chem. Res., 35(10), 3375 (1996)
Shieh MD, Lee C, Chem. Eng. Sci., 48, 1851 (1993)
Centi G, Perathoner S, Ind. Eng. Chem. Res., 36(8), 2945 (1997)
Ishida M, Wen CY, AIChE J., 14, 311 (1968)
Zarkanitis S, Sotirchos S, AIChE J., 35, 821 (1989)
Orbey N, Dogu G, Dogu T, Can. J. Chem. Eng., 60, 314 (1988)
Doraiswamy LK, Sharma MM, Heterogeneous Reactions: Analysis, Examples, and Reactor Design Volume 1: Gas-Solid and Solid-Solid Reactions, John Wiley & Sons, New York (1984)
Lee GH, Lee MS, Lee GD, Kim YH, Hong SS, J. Ind. Eng. Chem., 8(6), 572 (2002)

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[1] Yoo KS, Kim SD, Park SB, Ind. Eng. Chem. Res., 33(7), 1786 (1994)

[2] Jeong SM, Kim SD, Ind. Eng. Chem. Res., 36(12), 5425 (1997)

[3] Jeong SM, Jung SH, Yoo KS, Kim SD, Ind. Eng. Chem. Res., 38(6), 2210 (1999)

[4] Yoo KS, Jeong SM, Kim SD, Park SB, Ind. Eng. Chem. Res., 35(5), 1543 (1996)

[5] Harriott P, Markussen JM, Ind. Eng. Chem. Res., 31, 373 (1992)

[6] Kartheuser B, Hodnett BK, Riva A, Centi G, Matralis H, Ruwet M, Grange P, Passarini N, Ind. Eng. Chem. Res., 30, 2105 (1991)

[7] Dassori CG, Therney JW, Shah YT, AIChE J., 34, 1876 (1988)

[8] Yeh JT, Demski RJ, Strakey JP, Joubert JI, Environ. Prog., 4, 223 (1985)

[9] Cho MH, Lee WK, J. Chem. Eng. Jpn., 16, 127 (1983)

[10] Centi G, Passerine N, Perathoner S, Riva A, Ind. Eng. Chem. Res., 31, 1947 (1992)

[11] Jeong SM, Kim SD, Ind. Eng. Chem. Res., 39(6), 1911 (2000)

[12] Centi G, Passerine N, Perathoner S, Riva A, Stella G, Ind. Eng. Chem. Res., 31, 1963 (1992)

[13] Nam SW, Gavalas GR, Appl. Catal., 55, 193 (1989)

[14] Szekely J, Sohn HY, Evans JW, Gas-Solid Reactions, Academic Press, New York (1976)

[15] Liou TH, Chang FW, Ind. Eng. Chem. Res., 35(10), 3375 (1996)

[16] Shieh MD, Lee C, Chem. Eng. Sci., 48, 1851 (1993)

[17] Centi G, Perathoner S, Ind. Eng. Chem. Res., 36(8), 2945 (1997)

[18] Ishida M, Wen CY, AIChE J., 14, 311 (1968)

[19] Zarkanitis S, Sotirchos S, AIChE J., 35, 821 (1989)

[20] Orbey N, Dogu G, Dogu T, Can. J. Chem. Eng., 60, 314 (1988)

[21] Doraiswamy LK, Sharma MM, Heterogeneous Reactions: Analysis, Examples, and Reactor Design Volume 1: Gas-Solid and Solid-Solid Reactions, John Wiley & Sons, New York (1984)

[22] Lee GH, Lee MS, Lee GD, Kim YH, Hong SS, J. Ind. Eng. Chem., 8(6), 572 (2002)