FSB

Flat moving grate combustion 180 to 2,600 kW

The flat mov­ing grate fir­ing sys­tem is par­tic­u­lar­ly suit­ed to the com­bus­tion of wood fuels with a water con­tent up to 55% and an ash con­tent of 6%. Key advan­tages include the use of a vari­ety of fuels plus a low dust con­tent in the flue gas thanks to the rest­ing fuel bed.

MAWERA-Flachschubrostfeuerung-FSB

State-of-the-art combustion technology

Fuels:
Log­ging and sawmill scraps
Wood from land­scap­ing
Bark
Wood pro­cess­ing scraps

The FSB is char­ac­terised in par­tic­u­lar by flex­i­ble use of var­i­ous wood fuels plus a low dust con­tent in the flue gas thanks to the rest­ing fuel bed.

Grate fir­ing sys­tem

We gen­er­al­ly use low-NOx reduc­tion tech­nol­o­gy in our grate fir­ing sys­tems. The com­bus­tion cham­ber is equipped with an NOx emis­sion reduc­tion sys­tem on the pri­ma­ry side. Reg­u­la­tion of the pri­ma­ry air sup­ply togeth­er with flue gas recir­cu­la­tion ensures sub­sto­i­chio­met­ric com­bus­tion in the reduc­tion zone. Sec­ondary air is inject­ed into the oxi­da­tion zone with­in the ceram­ic-lined por­tion of the com­bus­tion cham­ber. This air injec­tion ensures high tur­bu­lence and mix­ing with the flue gas, result­ing in opti­mal oxi­da­tion (CO burnout) of the com­bus­tion gas­es. Ide­al emis­sions val­ues are achieved thanks to these mea­sures.

Min­i­mal life cycle costs

We place the utmost impor­tance on dura­bil­i­ty and a long lifes­pan for our sys­tems. This is achieved by using robust sys­tem com­po­nents. Sol­id steel con­struc­tion for the bio­mass boil­er and the use of high-qual­i­ty refrac­to­ry mate­r­i­al guar­an­tee reli­able sys­tem avail­abil­i­ty for many years. Min­i­mal pow­er con­sump­tion in all load states of the sys­tem is ensured by fre­quen­cy-con­trolled screws, grate dri­ves and flue gas recir­cu­la­tion.

Equipment and accessories

Type Pow­er range*
FSB 180 45 to 180 kW
FSB 220 55 to 220 kW
FSB 280 70 to 280 kW
FSB 350 87 to 350 kW
FSB 440 110 to 440 kW
FSB 550 137 to 550 kW
FSB 700 175 to 700 kW
FSB 850 212 to 850 kW
FSB 1100 275 to 1,100 kW
FSB 1400 350 to 1,400 kW
FSB 1700 425 to 1,700 kW
FSB 2100 525 to 2,100 kW
FSB 2600 650 to 2,600 kW

*Depend­ing on fuel and water con­tent

MAWERA-Flachschubrostfeuerung-FSB

TÜV
The FSB is test­ed and cer­ti­fied accord­ing to the Machin­ery Direc­tive and DIN EN 303–5
and is sub­ject to con­tin­u­ous mon­i­tor­ing by TÜV.

Equipment and accessories — FSB

Mod­el 180 220 280 350 440 550 700 850 1100 1400 1700 2100 2600
Rat­ed heat­ing out­put 180 220 280 350 440 550 700 850 1,100 1,400 1,700 2,100 2,600 kW
Dimen­sions SE
Length 3,226 3,226 3,824 3,824 3,816 3,813 3,813 4,813 4,902 5,321 5,411 5,625 5,625 mm
Width 1,237 1.237 1,337 1,337 1,437 1,535 1,687 1,709 1,809 1,850 1,970 2,150 2,345 mm
Height 2,679 2,679 2,954 2,954 3,054 3,152 3,280 4,057 4,157 4,460 4,576 5,190 5,340 mm
Dimen­sions ESH
Length 3,226 3,226 3,824 3,824 3,816 3,813 3,813 4,813 4,902 5,383 5,411 5,915 5,915 mm
Width 3,226 3,226 3,824 3,824 3,816 3,813 3,813 4,813 4,902 5,321 5,411 5,625 5,625 mm
Height 2,679 2,679 2,954 2,954 3,054 3,152 3,280 4,057 4,157 4,460 4,576 5,190 5,340 mm
Max. oper­at­ing pres­sure 6 or 10* 6 or 10* 6 or 10* 6 or 10* 6 or 10* 6 or 10* 6 or 10* 6 or 10* 6 or 10* 6 or 10* 6 or 10* 6 or 10* 6 or 10* bar (ü)
Water con­tent ≤ 50 ≤ 50 ≤ 50 ≤ 50 ≤ 50 ≤ 50 ≤ 50 ≤ 50 ≤ 50 ≤ 50 ≤ 50 ≤ 50 ≤ 50 %
Ash con­tent 4 4 4 4 4 4 4 4 4 4 4 4 4 %

*on request
SE = Screw inser­tion
ESH = slide-in neck

FSB

Flat mov­ing grate com­bus­tion 180 bis 2,600 kW

Equipment and accessories

MAWERA-FSB-Schnitt

Profit from these benefits:

  • Ful­ly auto­mat­ic wood-fir­ing sys­tem with grate
  • Fuel water con­tent: 6 to 55%
  • Staged com­bus­tion (low-NOx tech­nol­o­gy)
  • Low­er pol­lu­tant emis­sions thanks to rest­ing fire bed
  • High effi­cien­cy (up to 92%)
  • 3‑pass flame tube-flue tube boil­er with flue gas tem­per­a­tures below 190 °C at full load
  • High­ly insu­lat­ed, ful­ly ceram­ic-lined com­bus­tion cham­ber design and opti­mal­ly designed com­bus­tion air sup­ply guar­an­tee com­plete com­bus­tion of all fuels
  • Safe­ty heat exchang­er inte­grat­ed into boil­er
  • Slid­ing load reg­u­la­tion from 25 to 100% of the rat­ed heat out­put in com­pli­ance with the emis­sions val­ues (fuel-depen­dent)

Optional accessories

  • Pneu­mat­ic boil­er tube dedust­ing (sig­nif­i­cant­ly extends the time between clean­ings)
  • Auto­mat­ic igni­tion sys­tem (auto­mat­ic igni­tion for fuels with a water con­tent of up to 35%)
  • Flue gas recir­cu­la­tion “under” the grate runs behind the lin­ing. (Increas­es effi­cien­cy and reduces nitro­gen oxides, plus cool­ing of the grate)
  • Remote main­te­nance and visu­al­i­sa­tion sys­tems (full sys­tem access from a PC, tablet or mobile phone)
  • Rais­ing of the flue gas tem­per­a­ture (to avoid con­den­sa­tion in the flue gas path and in down­stream com­po­nents)
  • Nitro­gen oxide reduc­tion sys­tem (for reduc­ing of NOx emis­sions with the SNCR method)
  • Con­tin­u­ous emis­sions mea­sure­ment

Ques­tions?

FSB

Flat mov­ing grate com­bus­tion 180 — 2,600 kW

Example installation
Wholesale nursery (heating of greenhouses)

Fir­ing sys­tem: FSB
Out­put: 1,700 kW
Fuel: For­est wood chips M45

Anlagenbeispiel FSB
  1. Fuel stor­age with mov­ing floor dis­charge
  2. Hydraulic fuel trans­port with direct infeed
  3. Fir­ing sys­tem Pyroflex FSB+
  4. Ash removal from the com­bus­tion cham­ber into 800 l con­tain­er
  5. Flue gas clean­ing by elec­tro­sta­t­ic fil­ter with inte­grat­ed mul­ti­cy­clone sep­a­ra­tor
  6. Flue sys­tem
  7. Pneu­mat­ic boil­er tube dedust­ing (option­al)

Areas of application

Local and dis­trict heat­ing

Pub­lic devel­op­ers

Hos­pi­tal­i­ty

Nurs­eries