Characteristics of Mercury Release during Flue Gas Desulphurization Gypsum Reuse

Author

Jin, Jing ; Li, Li ; Fan, Jun-jie ; Cao, Yan ; Zhu, Jiashun ; Pan, Wei-Ping

Author_Institution

Coll. of Energy & Power Eng., Univ. of Shanghai for Sci. & Technol., Shanghai, China

fYear

2010

fDate

28-31 March 2010

Firstpage

1

Lastpage

4

Abstract

An investigation of the mercury release characteristics of four kinds of FGD gypsum during the heating process was conducted at a heating rate of 40Â°C/min in the air, in order to analyze the characteristics of mercury release during calcining and the heating process of gypsum products with FGD gypsum as a raw material. The results indicate that the main suitable temperature range for mercury discharging is between 200Â°C and 400Â°C during the heating process of FGD gypsum, with the mercury release rate falling off with a further increase of temperature. Further study on the distribution of mercury release showed that elemental mercury (Hg⁰) discharge is greater than divalent mercury (Hg²⁺) in the heating process of the FGD gypsum.

Keywords

flue gas desulphurisation; mercury (metal); Hg; divalent mercury; elemental mercury discharge; flue gas desulphurization gypsum reuse; heating process; mercury release characteristics; raw material; Calcination; Combustion; Flue gases; Furnaces; Heat engines; Heating; Kirchhoff´s Law; Pollution; Temperature distribution; Test equipment;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Engineering Conference (APPEEC), 2010 Asia-Pacific

Conference_Location

Chengdu

Print_ISBN

978-1-4244-4812-8

Electronic_ISBN

978-1-4244-4813-5

Type

conf

DOI

10.1109/APPEEC.2010.5448809

Filename

5448809