Method and apparatus for protecting screen tubes in boilers

Details Method and apparatus for protecting screen tubes in boilers Method and apparatus for protecting screen tubes in boilers

F - Mech Eng,Light,Heat,Weapons

22

B

122/143, 122/40

F22B 37/48 (2006.01) F22B 37/10 (2006.01) F22G 3/00 (2006.01)

Patent

CA 1328787

METHOD AND APPARATUS FOR PROTECTING SCREEN TUBES IN BOILERS ABSTRACT OF THE INVENTION This invention is directed to a method and apparatus for minimizing the risk to screen tubes in boilers from damage from falling lumps of deposits. More particularly, this invention pertains to a method and apparatus for protecting the screen tubes at the furnace exit in boilers which are subject to heavy deposits of some of the products of combustion on the heating surfaces; such boilers as kraft recovery boilers which burn liquor from the pulping process in paper manufacture. In a boiler in which solid fire-side deposits may occur, a method of protecting sloping sections of boiler screen tubes, from falling deposits which comprises positioning screenguards above the screen tubes.

589797

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