Description
Model:Chain Grate Stoker Type Steam Boiler
Structure:Three Pass Single Drum
Fuel:Coal, Biomass, Wood, Chip, Husk, Sawdust, Jute, Shell, Waste
Solid Fuel etc.
Capacity: 1 - 20 ton/h
(1ton,2ton,4ton,6ton,8ton,10ton,15ton,20ton)
Pressure:0.7/1.0/1.25/1.6/2.5Mpa
(7Bar/10Bar/12.5Bar/16Bar25Bar)
Temperature:170/184/194/204/225 C
Application:Food and Beverage,Textile,Plywood,Rice
Mill,Chemical,Paper Mill,Rubber Plant etc
DZL seires coal/biomass fired steam boiler realizes almost zero
pollution with the use of special dust collector solution (bag dust
collector, double towers desulfurization, etc.). This series boiler
is single drum horizontal type shell boiler, the combustion
equipment is chain grate (small scale flaker is available), has the
advantages of feed mechanically and strong adaptability of
different fuels. The fuel could be II class bituminous coal, the
diameter should be 6-25mm, and ash content should be less than
32.4%. Otherwise, DZL series boiler could also burn biomass fuel,
including wood, straw, bagasse, rice husk, coconut shell, cotton
seeds, peanut shell, etc.
Boiler Feature
1. Reasonable heat surface and burning device, heat efficiency is
4%～5% higher than national standard.
2. Reasonable flue gas speed, heating surface without ash
deposition and no abrasion, under the condition of no soot-blowing,
the boiler can work full-load, high-efficiency and safety in long
term.
3. The big and tall boiler furnace can be designed according to the
different fuel to improve the burning rate of fuel and remove black
smoke.
4. All independent loop and reasonable coal boiler injected
circulation are specially designed and adopted for the hot water
boilers. The medium speed in loop of heat surface is higher than
national standard
5. 1-20T/H & 0.7-14MW boiler adopt big and high strength grate,
add rolling device improves the boilers safety, lessen coal leakage
and adjust burning conveniently.
6. Over 20T/H & 14MW boiler adopt flake type or beam type chain
grate, less coal leakage, convenient burning adjustment. Closed
soot cleaning avoid second pollution and save time and labor.
7. Dust inertia separation at the furnace outlet can reduce exhaust
gas concentration and lessen abrasion of rear heat surface.
8. Compact structure makes its installation volume smaller than
other types of boilers, it will shorten installation period and
lower boiler room cost.
Biomass Fired Boiler Burning process
Fuel falls from coal hopper onto the front of chain grate, moves
along with the chain grate and will be preheated, dried, ignited,
burned out. Slag will be discharged by slag remover(eliminator) at
any time. Herring bone arch is adopted to improve igniting
condition. Smoke forms between front and back arches vortex,
completely mix with air, burns out and then goes after each other
through smoke flue at two wings, front smoke box, threaded smoke
tubes, cast iron economizer(for hot water boiler no cast iron
economizer), dust remover, draft fan and will be emitted through
chimney.
