Issues regarding the heat exchanger on the decomposition tank in the alumina industry
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In the alumina industry, heat exchangers are installed above the decomposition tanks. There is a contradictory situation here: a high flow rate of the medium leads to better heat exchange and helps prevent deposition, but it also causes severe erosion； A low flow rate of the medium can reduce erosion, but it results in poor heat transfer, and deposits are likely to form, causing blockages. I would like to ask the experts here; if any teachers are familiar with this relevant technology, please give me some guidance. Thank you!
I’m not sure if there are any teachers from alumina plants; I’d like to know the actual operating parameters.
-- Want the horse not to eat grass, yet want it to run fast! --
There’s no solution; such operating conditions inherently lead to this problem. To cope with it, it seems necessary to sacrifice area in order to reduce the flow rate. After all, blockages can be cleared, but if the equipment is worn out through erosion, it becomes unusable. However, the specific value for reducing the flow rate still needs to be studied.