Patent ID: 8020297

Claim:
A method for disassembling a boiler suspended from and supported by a supporting structure, the boiler comprising a furnace unit and a heat recovery area arranged in parallel with the furnace unit, both the furnace unit and the heat recovery area extending in a vertical direction and a lower end of the furnace unit being situated lower than a lower end of the heat recovery area, comprising: cutting off a lower part of the furnace unit to prepare an enlarged opening in the furnace unit; fixing a first support to the furnace unit approximately at the same height as the lower end of the heat recovery area; fixing a second support to the lower end of the heat recovery area; providing a first jacking apparatus and a second jacking apparatus respectively, under the first support and the second support so that the entire weight of the boiler is supported by the first jacking apparatus and the second jacking apparatus; detaching the boiler from the supporting structure; lowering the first support and the second support by the first jacking apparatus and the second jacking apparatus, and disassembling the boiler by cutting a lower part of the boiler, and repeating the lowering and the disassembling of the boiler until the first support and the second support are lowered to a maximum extent; and disassembling a remaining upper part of the boiler.