Crystallization of Calcium Sulfite and Behavior of Mn2+

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Atsushi Tatani¹  Yukihisa Fujima²  Tetsuya Imai¹ 

[1] Mitsubishi Heavy Industries, Ltd.;Center for Integrated Research in Science and Engineering, Nagoya University

关键词: Wet Limestone Scrubbing;    Desulfurization;    Calcium Sulfite;    Manganese;    Coprecipitation;   

DOI  :  10.1252/jcej.36.1057

来源: Maruzen Company Ltd

【 摘 要 】

References(14)Cited-By(4)A small amount of manganese compound contained in limestone as an impurity takes an important role of a catalyst for the sulfite oxidation reaction. In the present work, it was found that Mn2+ coprecipitates with the calcium sulfite solid in a continuously-stirred tank reactor under the similar conditions as that in the absorber tank of the wet limestone scrubbing process. The experimental results indicated that the coprecipitaton ratio of Mn2+ to calcium sulfite solid increases linearly proportional to the dissolved Mn2+ concentration in the solution upto a critical Mn2+ concentration and remains constant in the range of higher Mn2+. It was also found that Mn2+ did not coprecipitate with gypsum crystal at all.

【 授权许可】

Unknown