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Anybody know anything about waste heat boiler tube inserts called ferrules? My understanding is that they avoid heat flux on the surface of the tubes and direct it to the center region helping boiling, that's all I've been able to find.. anybody have anything else to contribute to help my understanding? are they wrapped around tubes?
Thank you,
Chrisp.
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Ferrules
Started by Guest_Guest_chrispap_*, Mar 30 2005 03:26 PM
5 replies to this topic
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#2
Luis Marques
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Posted 31 March 2005 - 11:45 AM
Chrisp
Ferrules inserts used in sulphur waste heat boilers are installed inside the tubes at the inlet flue gas tube sheet. Sulphur waste boilers use zirconium ceramic ferrules which purpose is to avoid erosion corrosion and overheating of boiler tubes inlet. At the same time tube sheets are lined with concrete refractory facing smoothly the ferrules.
Regards
Luis Marques
Ferrules inserts used in sulphur waste heat boilers are installed inside the tubes at the inlet flue gas tube sheet. Sulphur waste boilers use zirconium ceramic ferrules which purpose is to avoid erosion corrosion and overheating of boiler tubes inlet. At the same time tube sheets are lined with concrete refractory facing smoothly the ferrules.
Regards
Luis Marques
#3
Guest_Guest_*
Guest_Guest_*
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Posted 31 March 2005 - 03:05 PM
Thank you for your reply Luis, would the same configuration be used in a hydrogen waste heat boiler ?
#5
Guest_Chrisp_*
Guest_Chrisp_*
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Posted 13 April 2005 - 02:33 PM
Should the oulet temperature be well in excess of the inlet, can the ferrules be placed at the outlet as a protective measure?
#6
Luis Marques
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Posted 20 April 2005 - 02:06 AM
On a flue gas waste boiler tube side, inlet temperature is always greater than outlet temperature because flue gas energy temperature is used as a heating medium to transfer temperature to the shell waterside to produce steam. For this reason ceramic ferrules are usually installed at flue gas inlet tube side.
Luis Marques
Luis Marques
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