Circulating fluidized bed slagging pipe device and dredging method

Abstract

The invention relates to a circulating fluidized bed slagging pipe device and a dredging method. In the present, a power plant generally utilizes a site manual slag poking mode to solve the problem that a slagging pipe is plugged; generally, two operators must be needed to be specially responsible for operation in site; in the moment, slag spray, bed material self flow and other abnormal phenomenaendangering personal safety are prone to happening; an operation environment is severe, labor intensity is large, and labor cost is high; furthermore, overhaul efficiency for boiler shutdown caused by plug is higher, and safety and economy of a boiler are poorer. The circulating fluidized bed slagging pipe device disclosed by the invention comprises a slagging pipe (1), a hole is formed in the upper part of the slagging pipe, a connection pipe (5) is welded in the hole, the upper part of the connection pipe is in angle welding to a sealing device (21), the sealing device is connected with a slag breaking device (22), the slag breaking device is fixed to a fixed frame (2), and the fixed frame is respectively fixed to the ground and the connection pipe. The slagging pipe device and the dredging method disclosed by the invention are applied to a circulating fluidized bed.

Description

Technical field: [0001] The invention relates to a circulating fluidized bed slag discharge pipe device and a dredging method. Background technique: [0002] At present, various power plants generally use on-site artificial slag breaking to solve the problem of clogging of the slag discharge pipe of circulating fluidized bed boilers. Usually, more than two operators are required to crush the slag on site, and one of them is responsible for the operation of the slag discharge pipe baffle. At this time, slag spray, bed material self-flow and other abnormal phenomena that endanger personal safety are prone to occur, and it is necessary to quickly close the slag discharge pipe baffle. to prevent personnel from being scalded, and the other operator selects slag breaking tools with suitable strength such as steel bars or steel pipes, and operates behind the screen to break coke blocks or other blockages, so as to prevent hot slag from spraying out and hurting people at the moment ...

AI Technical Summary

Problems solved by technology

Usually, more than two operators are required to crush the slag on site, and one of them is responsible for the operation of the slag discharge pipe baffle. At this time, slag spray, bed material self-flow and other abnormal phenomena that endanger personal safety are prone to occur, and it is necessary to quickly close the slag discharge pipe baffle. to prevent personnel from being scalded, and the other operator selects slag breaking tools with suitable strength such as steel bars or steel pipes, and operates behind the screen to break coke blocks or other blockages, so as to prevent hot slag from spraying out and hurting people at the moment of dredging. The existing slag discharge pipe is frequently blocked, the environment for operators to poke slag is harsh, the labor intensity is high, the labor cost is high, and the frequency of shutdown and maintenance due to blockage is high, and the safety and economy of the boiler are poor

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