STEAM WASTE-HEAT BOILER BY SIEN Russian patent published in 2010 - IPC F22B1/18 

FIELD: power engineering.

SUBSTANCE: boiler consists of pipe bundle formed with vertical straight pipes. The pipes are arranged along circular circumference of diametre 1.5-3 times exceeding diametre of an outlet branch of the engine gas duct. The pipes communicate with steam-water and water collectors made in form of closed rings creating circular flue duct of this bundle of pipes on ends rigidly attached to both collectors and limited with an internal shell, split along perimetre, and with external closed shell. A lower end of the external shell is arranged at a level above the lower end of the internal shell. Also there is formed an additional near-axial flue duct of the boiler on external side limited with the internal shell. Inside this flue duct is divided with a vertical partition in two cavities, the first of which creates an inlet relief chamber of the near-axis flue duct, while the second one creates an outlet relief chamber. The shell is split into two halves in plane of the vertical axial partition.

EFFECT: raised efficiency of fuel utilisation.

2 cl, 2 dwg