Boiler Corner Seal Arrangement
Boiler Corner Seal Arrangement
(OP)
Hello, I searching for some input regarding corner seal arrangements for boilers. Currently our backpass design has economizer side wall riser tubes (membrane) and superheat rear wall (also membrane) Our economizer sidewalls definitely see some subcooling, and currently the corner seal is seal plate welded membrane to membrane with refractory in front. So as you could imagine we have problems with the temperature differential causing leaks on the cold side of the tubes at the seal plates. Has anyone run into this and what designs have you come up with to compensate, such as a slip seal arrangement.
Thanks,
Derek
Thanks,
Derek





RE: Boiler Corner Seal Arrangement
RE: Boiler Corner Seal Arrangement
SUPERHEAT TUBES
O
O
O
O
\ Seal Plate
O O O O O
ECONOMIZER TUBES
There is a 4 inch tangent to tangent seal plate fillet welded and then refractory on the hot and cold side of the seal plate. Thanks!!! :)
RE: Boiler Corner Seal Arrangement
Silica batt or blanket,Kaowool,Insuwool may work best.