Wastage of Water Wall Tubes in a Circulating Fluidized Bed Combustor with Two Gas Exits

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Do Won Shun¹  Jeong-Hoo Choi⁴  Soo-Sup Kim⁵  Tae-Woo Kim³  Sang Done Kim² 

[1] Korea Institute of Energy Research;Department of Chemical and Biomolecular Engineering, KAIST;eTEC E&C Ltd.;Department of Chemical Engineering, Konkuk University;SK Chemicals

关键词: Tube Wastage;    Tube Wear;    Tube Erosion;    Water Wall;    Circulating Fluidized Bed;   

DOI  :  10.1252/jcej.07we295

来源: Maruzen Company Ltd

【 摘 要 】

References(16)Cited-By(1)The tube wastage profiles of water walls are discussed in a commercial CFB furnace with two gas exits. The lateral profile of wear rate confirms that tube wastage is influenced mainly by secondary flow, stronger toward the center than in the corners, and somewhat by the wing walls and gas exits. The effect of two superposed secondary flows of the second kind, one caused by the shape of the entire freeboard cross-section and the other by sections between the wing walls, could also be confirmed in lateral profiles of tube erosion rate on the wall connected with wing walls. Appreciable tube erosion rate was confirmed near the center of the rear wall at lower heights and near the center of both sidewalls at heights above the gas exit level. Wastage of wing walls increased with distance into the interior of the furnace.

【 授权许可】

Unknown