公开(公告)号：US09951943B2

公开(公告)日：2018-04-24

申请号：US13951956

申请日：2013-07-26

Applicant: ALSTOM Technology Ltd

Inventor： Michael Walter Seitz

IPC: B05D1/02 ,  F22B21/02 ,  B23K35/02 ,  B23K35/22 ,  B23K35/30 ,  B23K35/32 ,  B32B15/01 ,  C22C19/05 ,  C22C27/06 ,  C22C30/00 ,  C23C4/04 ,  C23C4/06 ,  F22B37/10 ,  F23C10/18 ,  F23M5/08 ,  F28F19/06 ,  C23C4/131

CPC classification number: F22B21/02 ,  B23K35/0266 ,  B23K35/22 ,  B23K35/3033 ,  B23K35/327 ,  B32B15/013 ,  B32B15/015 ,  C22C19/05 ,  C22C19/052 ,  C22C19/053 ,  C22C19/055 ,  C22C19/058 ,  C22C27/06 ,  C22C30/00 ,  C23C4/04 ,  C23C4/06 ,  C23C4/131 ,  F22B37/107 ,  F22B37/108 ,  F23C10/18 ,  F23M5/08 ,  F23M2900/05001 ,  F23M2900/05004 ,  F28F19/06

Abstract: The erosion-prone sections of the tubes in a circulating fluidized bed boiler are provided with a locally thickened sidewall without forming discontinuities on the outer surface of the tubes. This can be accomplished, for example, by replacing the erosion prone portion of the tube with a section having a smaller inside diameter, but the same outside diameter, or by replacing the erosion prone portion of the tube with a section having a thicker sidewall, but the same inside diameter, and smoothing over the outside discontinuity with an alloy coating. A useful alloy coating is also disclosed which can be used for this and other applications.