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Dust removal treatment for the boiler induced draft fan impeller

2009-04-15View Original

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In coal-fired boilers, the high-temperature, dusty flue gas generated after fuel combustion passes through a multi-tube dust removal system and a water bath desulfurization process before reaching the induced draft fan. This often leads to severe dust accumulation on the impeller of the exhaust fan, disrupting the fan’s balance and causing excessive vibration during operation. If manual ash cleaning is used, firstly, it is not easy to clean thoroughly, and secondly, the workload is extremely high. I wonder if the experts on the forum have any better solutions? I hope you can help me solve this issue in detail, without giving overly general answers; hydraulic or pneumatic dust removal methods can be used. What is the specific approach? Specific parameters? Please! ! !
Reply #22009-04-15
We all use boiler soot removers
Reply #32009-04-16
Why isn’t anyone answering? ? ? ! ! !
Reply #42009-04-17
High-temperature dusty flue gas passes through a multi-tube cyclone dust remover, after which the amount of dust in the gas is very low. As LZ said, the dust level is high, so efforts should be made on the dust collector itself. The dust removal efficiency of multi-tube cyclones should be relatively high; it is recommended to review the equipment selection and operating parameters. This is a quite critical step; if the dust removal is inadequate and large amounts of dust end up in the water, treating the graywater becomes quite troublesome. Also, check the washing function and effectiveness of the washing device. After desulfurization, it reaches the induced draft fan. As long as the clothing issue is resolved, the problem with the exhaust fan will be solved as well.
Reply #52009-04-17
For our small chain furnace, we have used car wash nozzles to clean the impeller of the exhaust fan on several occasions, and the results have been satisfactory
Reply #62009-04-17
1. What if a high-pressure cleaning gun is used? 2. Is it necessary to perform dynamic balancing again after each dust cleaning?
Reply #72009-04-17
The best approach is to solve the ash removal problem, that is, to address the efficiency issue of multi-tube dust removal. Solving the problem with the fan blades is only a superficial solution; our company has also encountered similar issues, which relate to the need for maintainability of the multiple pipes
Reply #82009-04-18
It seems there are manufacturers that produce ash removers (in powder form) specifically for coal-fired boilers; these can be added directly to the coal, but it’s not clear what the effect of this is. You can look it up online.
Reply #92009-04-18
First, I need to know what size boiler the original poster has; it would be best if they could provide a layout diagram with the dimensions, so that I can truly help them solve the problem.
Reply #102019-12-07
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