Tubular waterwall structure in a fluidized bed reaction chamber and a fluidized bed reaction chamber

    公开(公告)号:US10118147B1

    公开(公告)日:2018-11-06

    申请号:US15648491

    申请日:2017-07-13

    IPC分类号: B01J8/24 B01J8/18

    摘要: A tubular waterwall structure in a fluidized bed reaction chamber includes horizontally adjacent first and second portions forming a corner structure and constituted by vertical tubes and fins centrally attached to the tubes and having a first width. The first wall portion has an outermost tube next to the corner, an upper portion defining an upper vertical plane in an upper level range and a lower portion defining a lower (outwards) vertical plane in a lower level range. The lower portion has a refractory lining. The second wall portion is vertical and has an outermost tube next to the corner. The outermost tube of the second wall portion is in the lower level region connected to the outermost tube of the first wall portion by a planar lower beveled corner fin having a refractory lining and a width that is larger than the first width.

    Watertube panel portion and a method of manufacturing a watertube panel portion in a fluidized bed reactor

    公开(公告)号:US10323842B2

    公开(公告)日:2019-06-18

    申请号:US15448852

    申请日:2017-03-03

    发明人: John Murphy

    摘要: A watertube panel portion for a fluidized bed reactor and a corresponding method. The watertube panel portion includes multiple parallel metal tubes having a tube length L1, an outer surface, an original outer diameter OD1, and an original wall thickness WT1, and a circumferentially extending recess formed in a central portion of each of the tubes, between first and second end portions. The recess has a constant depth D that is less than the wall thickness WT1. The recess encircles the outer surface of the central portion of the metal tube. A circumferentially extending metal coating has a constant thickness of at most the depth D of the recess to blanket the recess of each of the multiple metal tubes. A fin is continuously welded between each pair of adjacent tubes.