Description:

• The boiler is a semi-outdoor design that consists of a single-drum natural-circulation type.
• The design incorporates an insulated, high-efficiency and high-temperature cyclone gas-solid separator. This results in a 90% separating efficiency, while also providing effective dust-density control and resolves the issue of abrasions on the heating surface caused by the tail convection.
• The ignition system functions by combusting hot-gas under the bed with a water-cooled grid plate. The combusted air consists of a primary flow of air from the water-cooled grid plate to the furnace, and a secondary flow of air from the circumferential water-cooled walls above the gird plate to the furnace.
• The boiler system is designed in a manner that ensures the fluidizing quality of the whole bed, as well as contributing to the effective reduction of the carbon content of slag in the boiler.
• The system also consists of a tall furnace that ensures complete burn out in the furnace as well as a reduction in the carbon content of the fly ash.
• The advanced design concepts incorporated in this technology have greatly increased our product’s component reliability and operating capability, as well as decreased the overall maintenance requirements.
• The boiler has the ability to operate at both low and high levels without the need for auxiliary fuel combustion.

Technical characteristics:

• The boiler is able to use a wide variety of coals as fuel, such as bituminous coal semi-anthracite coal and blended coal, and even inferior quality coal such as stone coal.
• The load range in the boiler can be easily adjusted from 30% to 110% B-MCR.