Improving Fly Ash Deposition in Horizontal Circular Ducting

AI Thread Summary
The discussion focuses on improving fly ash deposition in horizontal circular ducting at an incineration plant that processes hazardous industrial waste. The fly ash tends to settle in the ducting, leading to partial clogs and operational issues. Participants are seeking literature on the problem, knowledge mapping, and assistance with using CFD Fluent for flow pattern analysis and particle transport theory. Suggestions include exploring standard soot/ash traps and consulting academic journals for in-depth research. The conversation emphasizes the complexity of modeling particulate matter deposition and the need for reliable solutions.
cucu_datoonn
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Hi all..

Currently I'm mess up myself with a study of an improvement of incineration fly ash deposition in horizontal circular ducting hapen in my incineration plant. This plant treated the hazardous industrial waste as a fuel using fludised bed reactor and silica sand as an innert material. As a product of combustion process, the fly ash flows together with the flue gas to the next chamber (gas cooler) via the circular ducting. The flow initially in vertical direction before enter the horizontal ducting. The was an induced draft by IDF fan which maintain the plant in negative gauge pressure.

Due to some reason, the fly ash inside the flue gas tends to settle down at the floor of circular ducting (horizontal) and eventually will caused the ducting will partially clogged. This problem lead to several impact to the plant operation.

My question here is:
i) Did anyone here can help me with the litrature study of this problem.
ii) Did anyone here can help me to do some knowledge mapping regarding this phenomenon.
ii) I intend to use CFD Fluent to do some analysis on the flow pattern. Can anyone here help me with this stuff?
iv) Did anyone can help me about the particle transport theory?

Thanks in advance
 
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To my knowledge particular matter modeling in FLUENT is not an easy job and getting reliable solutions for soot/ash deposition in the duct isn't either.
 
To my knowledge particular matter modeling in FLUENT is not an easy job and getting reliable solutions for soot/ash deposition in the duct isn't either.

Dear jaap de vries,
Thanks for your comment, since then, do u have any idea about this particular problem? If you can guide me for a knowledge mapping it's very good enough in the mean time and i'll really appreciate that. Looking foward for your next comment. Thanks in advance.
 
Well what solutions are you looking for from your CFD? It could still be used to predict pressure loss ones you 'obstruct the flow'

This is not necessarily my expertise but I would assume that that are standard soot/ash traps available for the furnace industry.

So for highly academic results you might want to look in
Combustion and Flame
Proceedings of the combustion institute
Combustion Science and Technology
 

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