Are intended for burning lower-grade coals (anthracite and black coal siftings, fraction slag 0-10, 0-13) in steam boilers with evaporative capacity of up to 25 tons/h, in hot-water boilers and furnaces.

Are delivered to the regions with temperate and tropical climates.The stokers belong to the class of mechanical furnace plants for fuel combustion in the hot-temperature boiling bed.

A characteristic feature of the stokers is a two-stage fuel burning process. The fuel is continuously delivered to the front part of the grate by means of a mechanical feeder. At the first stage the fuel combustion takes place in suspension in the fluidized bed in the bath. Here an intensive fuel agitation and combustion throughout the whole bath volume are realized. About 50% of the air is delivered under the grate. On leaving the fluidized bed the mix burns down in the furnace volume where the secondary air in the capacity of overfire air is delivered.

 TECHNICAL CHARACTERISTICS

The range of loading variations, % 50-100

Excess air factor behind the stoker, no more than 1.15-1.5

Heat losses caused by chemical underburning, %, no more than 0.5

Heat losses caused by mechanical underburning, %, no more than 7.5

Basic fuel: siftings of black coals and anthracites

Fuel humidity, %, no more than 8.5

Fuel ash value, %, no more than 25

Fine particles content (0-6 mm), %, no more than - 40

Maximum lump size, mm - 13.

BASIC DESIGN PARAMETERS

Parameter Stoker type TНУ-2-0,3/5.6 ТНУ-2-0.6/6.5 ТЛКС(О)-0.3/3.07 Productivity of the steam boiler tones/h 10.0 25.0 - Heat productivity of the hot-water boilers Gcal/h - - 1.5 Grate width, mm 270 610 287 Height Н, mm 3915 4105 3170 Height Н1, mm 580 770 770 Length between the axes L, mm 5600 6500 3070 Length L1, mm 6550 7450 3880 Mass, kg, no more than 7500 9750 3000