SMOKE STACK Russian patent published in 2009 - IPC E04H12/28 F23J11/00 

FIELD: construction.

SUBSTANCE: smoke stack comprises gas-escape shaft equipped with protective layer from heat insulation material. Smoke stack is made of blocks, every of which comprises body in the form of rectangular parallelepiped from polystyrene concrete with central vertical hole, in which ceramic pipe is installed and concreted with socket-coupling in upper part, which forms gas-escape shaft, and with side openings that are symmetrically located along periphery, which in process of assembly form through vertical channels filled with concrete mortar to make bearing rod framework.

EFFECT: simplified process of smoke stack manufacture for escape of smoke gases from heating furnaces.

1 dwg, 2 cl