BOILER OF U-SHAPED ARRANGEMENT Russian patent published in 1999 - IPC

FIELD: mechanical engineering. SUBSTANCE: boiler includes furnace 1 and convective gas duct 2 provided with tubular slag screen 6, roof baffle wall 4, front baffle wall 7 and rear baffle wall 10; they are brought in communication by means of swivel chamber 3 formed by tubular roof battle wall 4, slag screen 6 and hearth baffle wall 5. Slag screen 6 and hearth baffle wall 5 of swivel chamber 3, as well as half of front baffle wall 7 of convective gas duct 2 are formed by part of tubes of roof baffle wall 4 of swivel chamber 3; roof baffle wall 4 and rear baffle wall 10 of convective gas duct 2, its slag screen 6 and second half of front baffle wall are formed by other part of tubes of roof baffle screen 4 of swivel chamber 3. EFFECT: reduced usage of metal; avoidance of transfer of unheated steam. 4 cl, 3 dwg