Collapsed Heat Exchanger Tubes
Collapsed Heat Exchanger Tubes
(OP)
We concentrate the solids from 35% to 65% before it gets burnt in the recovery boiler. Steam is used on the shell side to evaporate the water.
Last week we noticed about 20 tubes in one section (not in front of the steam inlet) had collapsed.
Does anyone have any ideas or know whare I can get some reference material about what could cause this to occur.
Thanks in advance.
Last week we noticed about 20 tubes in one section (not in front of the steam inlet) had collapsed.
Does anyone have any ideas or know whare I can get some reference material about what could cause this to occur.
Thanks in advance.





RE: Collapsed Heat Exchanger Tubes
kyong
RE: Collapsed Heat Exchanger Tubes
Best Regards
Morten
RE: Collapsed Heat Exchanger Tubes
Last year when we noticed that the tubes were plugged and couldn't pressure wash them. Now we know that the collapsed tubes prevented the nozzle from going all the way through.
This shutdown we used water and compressed air to clean the tubes before sending the camera inside. We noticed that the collapsed tubes looked like a figure eight. (ie the centers were collapsed.)
Has anyone expereinced a situation where the there was localized collapsing of tubes. In out case it seems to have occured a couple of feet down from a baffle plate.
Thanks in advance.
RE: Collapsed Heat Exchanger Tubes
RE: Collapsed Heat Exchanger Tubes