Waste to Energy (Incineration)

Comef Waste to Energy

Huge is generator range Comef is able to offer based on fuel (biomass, refuses, fossil fuels, various refuse derived fuels) and plant Client’s needs. 

Vertical path boilers, horizontal path boilers, watertube boilers, firetube boilers, thermal oil boilers. 
Boilers integrated on furnace or behind adiabatic room, for hot water, superheated water, saturated steam, superheated steam. 
For electric and/or thermal energy production. 
Reliable and innovative components dress our boilers; ash systems, efficient and highly automated cleaning systems, equipments for speed maintenance. 

Our boilers technical features are quality warrant:

  • Manufacturing through highest prefabrication grade
  • Flexible construction by module building method
  • Long service life
  • Speedy and easy maintenance
In solid fuels, our technical input, ripened by our more than long experience, is to be assured largest reliability and durability:
  • Erosion reducing flue gas speed
  • Corrosion reducing alloy overlay
  • Suitable thickness for heat exchanging tubes
Waste and biomass boilers on furnace
  • Biomass, municipal waste, refuse derived fuel fired.
  • Steam generation for electric and/or thermal production, included heat district
  • Combustion on grate or fluidized bed

How an energy plant is born? 
Extensive engineering evaluations and analysis leading to plant sizes definition, intended as thermal and electrical output got by energetically recovery of available fuel material. 
Thermofluidodynamic design define plant geometrical and technological features, based on requested and applicable criteria. 



Main features are: 

Combustion system

  • Grid
  • Fluidized bed
  • Burners
Furnace type
  • Adiabatic size
  • Boiler integrated
Boiler type
  • Recovery
  • Thermal oil
  • Vertical or horizontal path
  • Watertube or firetube
  • Natural or forced circulation
Condensation system
  • Water or air
Fluegas treatment
  • Dry, partialwet, wet
  • Electric filtration

completed by continuous analyzer 

Thermal cycle 
Water or oil 
Fluid intended use
For electric and/or thermal energy generation

Supervision and Control system

What fuel to be energetically recovered? 

Refuse derived fuel from:
  • Green and forested management
  • Forestry
  • Woodworking and panels and furniture work
  • Agricultural, agroindustrial, food by cereals, by legumes, by rice, by olives, by hay, by straw, by fruit, by vegetables, by cacao, by coffee, by tea, by tobacco, by canned
  • Paperworking
  • Packaging
  • Animal farming
  • Waste mechanical treatment (sorting, crushing, compacting, reducing)

For more info about Comef incineration systems and references see here.

Doosan Lentjes Waste to Energy

Climate-neutral energy

Our experience

  • Grate and boiler solutions ‒ chute-to-stack or full turnkey supply
  • 77 lines contracted to date converting millions of tons of waste to energy every year
  • Small to large incinerators up to 45 t/h in a single unit

Customer benefits

  • Highly efficient and reliable incineration and energy recovery from a wide range of waste compositions
  • Two types of grates for various waste qualities:
    • Reciprocating grate (air- or water cooled)
    • Roller grate
  • Range of technologies and processes which have constantly been improved with an emphasis on:
    • Process safety and reliability
    • Full chute-to-stack process knowledge without interfaces
    • Adaptability to changing fuel composition and quality


Waste-to-Energy plant references

Location: Krakow, Poland
Customer: Posco
Final Customer: KHK
Process: Counter-reciprocating grate
Throughput: 2 x 110,000 t/a (MSW)

Location: Frankfurt, Germany
Customer: AVA Nordweststadt
Process: Counter-reciprocating grate
CIRCOCLEAN® flue gas cleaning
Throughput: 4 x 160,000 t/a (MSW)

Location: Budapest, Hungary
Customer: Fövárosi Közterület Fenntartó ZRT (FKF)
Process: Roller grate
Semi-dry cleaning with spray absorber
Throughput: 4 x 120,000 t/a (MSW)


Sewage Sludge Incineration (SSI)

Our experience

  • Mono-incineration solutions based on the proven bubbling fluidised bed technology
  • Full turnkey plants along the entire process chain
  • More than 25 incineration units built across Europe

Customer benefits

  • Full compliance with new legal directives according to the Regulation on the Reorganization of Sewage Sludge Treatment (Verordnung zur Neuordnung der Klärschlammverwertung)
  • Basis to recover phosphor us from the separated ash
  • Removal of Endocrine Disruptors from the food chain (painkillers, ovulation inhibitors, antibiotics)
  • Maximum incineration efficiency
  • Low emissions values significantly below the requirements of the German 17. BImSchV or European IED regulation


Sewage Sludge Incineration plant references

Location: Belfast, Northern Ireland
Customer: Water Executive
Fuels / DR*-content at reception: Sewage sludge (3.5%), dewatered sewage sludge(25%), screenings (45%)
Total plant capacity (OS**): Sewage sludge (54.6 t/h), dewatered sewage sludge (4.14 t/h), screenings (0.12 t/h
Number of lines: 1

Location: Crossness, London, UK
Customer: Thames Water Crossness STW
Fuels / DR*-content at reception: Sewage sludge (3-5%)
Total plant capacity (OS**): 140-233 t/h
Number of lines: 2

Location: Dordrecht, the Netherlands
Customer: DRSH Zuiveringsslib NV
Fuels / DR*-content at reception: Dried sewage sludge (16-24%)
Total plant capacity (OS**): 100-225 t/h
Number of lines: 4


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