Deformation of common water wall
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Our No. 1 boiler is a 35-ton circulating fluidized bed boiler that has been in operation for almost ten years. During this inspection, deformation was detected in the furnace and the water-cooled walls shared with the inertial system. Could everyone please suggest ways to carry out repairs or replacements in a more economical and time-efficient manner? Thank you
It depends on the specific condition of the tube deformation. To save costs, in the case of severe deformation, simply cut off the deformed section and then use butt welding to attach a new tube ； If the deformation is not severe enough to be considered superscalar, it will not affect the next shutdown for maintenance; simply removing the scale from the pipes is sufficient.
If the water wall deforms outward, a set of water wall fixing devices can be installed. (I don’t know whether your 35ton unit deforms inward or outward.) ) Pipe material of 20G is sufficient; TIG welding for butt jointing.