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It’s two 55-ton circulating fluidized bed waste incinerators. Since the furnace volume was reduced last year, there has been a problem of ash accumulation and coking in the cone section of the separator – why is this happening? >o

2018-03-14View Original

Thread Content

Why does the return conveyor in a circulating fluidized bed get clogged?
Reply #22018-03-14
The expansion joint of the counterflow reactor vertical pipe was cut open and replaced, as the pipe was also clogged with ash, causing its inner diameter to decrease
Reply #32018-03-14
Also, the videos I filmed can’t be uploaded
Reply #42018-03-15
Is this a combination of coal and waste in combustion? I’m not very familiar with waste incineration; could it be that the wind is too strong, resulting in incomplete combustion and thus excessive temperatures at the return material area, which leads to coking as a result of continued burning?
Reply #52018-03-15
Fuel undergoes post-combustion coking in the separator and downcomers (coking occurs as the ash melting point decreases during post-combustion); it is recommended to increase the fuel combustion rate inside the furnace to prevent post-combustion coking in the separator and downcomers.
Reply #62018-03-17
It should be caused by secondary combustion~
Reply #72018-03-22
It should be that the fuel has not burned completely in the furnace, resulting in post-combustion in the separator; but why is the pressure in the dense-phase region of the furnace so low? Only 0.05 Kpa?
Reply #82018-03-22
Both the temperature and pressure are incorrect. It’s estimated to be in the cold state
Reply #92018-03-22
Well, it’s probably the startup screen
Reply #102018-03-22
Just by looking at the temperature, it’s clear that the furnace has been shut down:D

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