Regeneration characteristics of modified semi-coke supported Zn/Fe/Ce hot gas desulfurization sorbent in SO<sub>2</sub> atmosphere

SHANG Su-li; MI Jie; YU Meng; SHANGGUAN Ju

Volume 42 Issue 01

Jan. 2014

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SHANG Su-li, MI Jie, YU Meng, SHANGGUAN Ju. Regeneration characteristics of modified semi-coke supported Zn/Fe/Ce hot gas desulfurization sorbent in SO2 atmosphere[J]. Journal of Fuel Chemistry and Technology, 2014, 42(01): 110-115.

Citation:

SHANG Su-li, MI Jie, YU Meng, SHANGGUAN Ju. Regeneration characteristics of modified semi-coke supported Zn/Fe/Ce hot gas desulfurization sorbent in SO₂ atmosphere[J]. Journal of Fuel Chemistry and Technology, 2014, 42(01): 110-115.

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Regeneration characteristics of modified semi-coke supported Zn/Fe/Ce hot gas desulfurization sorbent in SO₂ atmosphere

Key Laboratory of Coal Science and Technology of Shanxi Province and Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China

Received Date: 2013-05-11
Rev Recd Date: 2013-07-29
Publish Date: 2014-01-30

Abstract

Abstract

The influences of temperature, sulfur dioxide concentration and space velocity on the regeneration behavior of modified semi-coke supported Fe/Zn/Ce sorbent were investigated in a quartz fixed-bed reactor of 20 mm diameter. The sorbents were prepared by co-precipitation method with the Zn/Fe/Ce molar ratio of 1.0:2.0:0.6 supported on the modified semi-coke. The changes of crystalline phase and morphology of the sorbent before and after regeneration were examined by X-ray diffraction and scanning electron microscopy. The surface area and pore volume of sorbents were characterized by N₂ adsorption. The results show that the sorbent can be regenerated over 600 ℃ and the elemental sulfur is produced. The optimum regeneration temperature, SO₂ concentration and space velocity are 700 ℃, 12% and 5 000 h^-1, respectively.
- hot coal gas,
- semi-coke supported (Fe, Zn, Ce) sorbent,
- regeneration,
- SO₂ atmosphere

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References

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