[1] Luo Yonggang**, Li Daji,. Experimental Research on Flue Gas Desulfurizationby Superfine Titanium Dioxied* [J]. Journal of Southeast University (English Edition), 2001, 17 (1): 50-54. [doi:10.3969/j.issn.1003-7985.2001.01.012]

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Experimental Research on Flue Gas Desulfurizationby Superfine Titanium Dioxied^*()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

17

Issue:

2001 1

Page:

50-54

Research Field:

Chemistry and Chemical Engineering

Publishing date:

2001-06-30

Info

Title:

Experimental Research on Flue Gas Desulfurizationby Superfine Titanium Dioxied^*

Author(s):

Luo Yonggang^**;  Li Daji

Key Laboratory of Educational Ministry on Clean Coal Power Generation and Combustion Technology, Thermoenergy Engineering Research Institute, Southeast University, Nanjing 210096, China

Keywords:

FGD;  titanium dioxide;  sol-gel;  physical adsorption;  fixed-bed

PACS:

TQ424.1

DOI:

10.3969/j.issn.1003-7985.2001.01.012

Abstract:

The mechanism of all present adopted desulfurization technologies is chemical reaction. A new kind of desulfurization medium — TiO₂ particle having large fraction void and specific surface area which is made from TiO₂ with superfine size sintered at low temperature and processed with surface activation is tested and investigated. The mechanism of desulfurization is mainly physical adsorption instead of traditional chemical reaction. Four samples of such TiO₂ particles were characterized by advanced instruments and tested for adsorption dynamics at the temperature range of 90 ℃ to 240 ℃ in a fixed bed. The results show that its adsorption ability for SO₂in flue gas is dependent strongly on three factors: quality of TiO₂particles, adsorption temperature and SO₂ concentration in flue gas. Titanium dioxide has well desulfurization character and pretty good prospect in engineering application. Sintered at temperature range from 440 ℃ to 540 ℃, it has the best adsorption ability. In practical use the best adsorption temperature is around 120 ℃.

References:

[1] C.Natarajan, and G.Nogami, Cathodic electrodeposition of nanocrystalline Titanium Dioxide thin films, Journal of the Electrochemical Society, vol.143, no.5, pp.1547-1550, 1996
[2] M.R. Stouffer, H. Yoon, and F. P. Burke, Investigation of the mechanisms of flue gas desulfurization by in-duct dry sorbent injection, Industrial Engineering Chemical Research, vol.28, no.1, pp, 20-27, 1989
[3] Y. Otani, H. Emi, I. Uchijima, and H. Nishino, Removal of mercury vapor from air with sulfur impernated adsorbents, Environment Science and Technology, vol.22, no.6, pp.708-711, 1988
[4] Akihiko Aoki, and Gyoichi Nogami, Fabrication of anatase thin films from peroxopoly titanic acid by spray pyrolysis, Journal of the Electrochemical Society, vol.143, no.9, pp.2191-2193, 1996
[5] J. C. Schouten, and C. M. van den Bleek, Influence of oxygen-stoichiometry on desulfurization during FBC: a simple sure modeling approach, In: Proceedings of the 9th International Conference on Fluidized Bed Combustion, vol.2, pp.749-756, 1987

Memo

Memo:

* The project supported by the National Natural Science Foundation of China(59878012)and Southeast University Science Foundation.
** Born in 1967, male, graduate, lecturer.

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