The Transformation Mechanism of H2S beside the Water Wall under Reducing Condition

Jian Guo Yang; Qing Fu Zhang; Yang Yang; Hong Zhao

doi:10.4028/www.scientific.net/AMR.512-515.2471

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 512-515The Transformation Mechanism of H2S beside the...

The Transformation Mechanism of H₂S beside the Water Wall under Reducing Condition

Abstract:

Under reducing conditions, H₂S, which will result in the high temperature corrosion of fireside water wall, is predominant sulfur compounds discharged from the coal. Influences of temperature and oxygen on the transformation mechanism of H₂S were studied by chemical kinetics. It is concluded from the study that the main productions of H₂S vary with the reaction conditions, COS is mainly produced in highly reducing conditions and SO₂ is dominant production under oxidizing atmosphere. Peak concentration of S₂ only can be obtained at mildly reducing conditions and moderate temperature; meanwhile, most of H₂S is oxidized to SO₂ when the temperature is above 1300K. A turning point is found when the concentration of O₂ is about 2%, and simulation results comply with experimental measurements.

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Periodical:

Advanced Materials Research (Volumes 512-515)

Pages:

2471-2474

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.512-515.2471

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Online since:

May 2012

Authors:

Jian Guo Yang, Qing Fu Zhang, Yang Yang, Hong Zhao

Keywords:

H₂S, High Temperature Corrosion, Kinetic Simulation, Reducing Condition

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