Study on the Control of Selenium Emission During Coal Gasification

Wen Yue Du; Qin Shuai; Li Wei Yang

doi:10.4028/www.scientific.net/AMR.287-290.289

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 287-290Study on the Control of Selenium Emission During...

Study on the Control of Selenium Emission During Coal Gasification

Abstract:

The volatilization behavior of Seleenium in coal / coal char was studied by determining the concentration of Se with AFS at H₂O(Ar) atmosphere in high-temperature tube furnace. The inhibition effects on the volatilization of Se with calcium-based material (CaO) and nano materials Fe₃O₄ as absorbents were studied during coal gasification. The results show that the volatilization rates of Se, rising with the temperature of gasification, can be effectively controlled with the absorbent of CaO. Because CaO can reacts with Se produce CaSeO₄, a more stable compoud. Nano-Fe₃O₄ can enhance the ability of CaO to inhibit the volatilization of selenium, it is because not only can promote more CaSeO₄, while also reducing the possibility of its decomposition.

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Periodical:

Advanced Materials Research (Volumes 287-290)

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289-293

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.287-290.289

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Online since:

July 2011

Authors:

Wen Yue Du, Qin Shuai, Li Wei Yang

Keywords:

Coal Gasification, Emission Control, Mechanism Index, Selenium

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