Submerged Chain Conveyor

Picture animation below is SSCC hydraulic motor drive (Hydraulic Motor type radial piston motors with a rotating shaft) which the red colour is hydraulic line supply for push the plungers and so created the rotation because of the ring countour outside.



And blue colour is the hydraulic return line which push back the plungers caused by the ring contour outside. The speed is can be adjusted by hydraulic pressure regulator but if the speed is too much and hydraulic pressure indication high but pressure switch can not work, the plungers can be damage.


This picture describe the simple of SSCC system where maintain chain keep tight from sprocket by chain adjustable. The bottom ash is removed fall to the area where the Liu Gong dozer can take it to the ash lagoon




Bottom ash continually falls from the furnace throat, through the insulated bottom ash chute, and into the water-filled submerged conveyor trough.

Cooled ash is conveyed along the bottom of this trough by conveyor flights attached at both ends to continuous loops of conveyor chain. As the ash-laden flights leave the water-filled trough and travel up the dry incline, the ash drains and dewaters itself. The dewatered ash is discharged to a takeaway conveyor or storage area. The conveyor flights return in a lower compartment which is open for maintenance.


Problems at SSCC usually at hydraulic pressure over load due to many slag fall cause by sootblowing, chain tension low and make loose from sprocket, the scrapper coroded caused by water too hot, and wear plate at return side roll up.




A big problem if the chain loosen from sprocket at furnace side, the unit must be shut down to fix it. The SSCC stop limited only 4 until 8 hours, after 8 hours, action plant (load de-rating until shutdown unit) should be carried out.

Information about coal, please visit http://idpowerstation.blogspot.com/2009/01/coal.html


Information about coal handling, please visit http://idpowerstation.blogspot.com/2009/08/coal-handling.html

Information about ash handling, please visit http://idpowerstation.blogspot.com/2011/05/ash-handling.html

Related link :
AshTech Corporation