Fuel:
Urban Solid Waste

Process:
Mass combustion

Heating power of USW:

  • nominal 7820 kJ/kg;
  • minimum 5860 kJ/kg;
  • maximum 10460 kJ/kg


Furnace grid:
Detroit Stoker Reverse-Acting Stoker

Processing Capacity:
28 tons per hour and per line, with 3 lines installed and reserve for a fourth.

Operating system:
24 hours a day, 365 days a year.

Note: Project Values

Production of steam and energy

Production of steam and energy

Boilers for steam production

3 units with natural circulation of the type of water panel with overheating.
 

Steam flow in the turbine

198 000 kg/h
 

Overheated steam

52,8 bar, 420ºC
 

Type of turbine

Condensation with 14 floors.
 

Turbo-alternator power

50 MW
 

Gross electrical production

587 kWh per ton of RSU (at nominal PCI)
 

Electric self-consumption

89 kWh per tonne of RSU (at nominal PCI)

Products of combustion

Products of combustion

Slags

About 200 kg of slag are produced per ton of incinerated MSW.
The slags are sent to the Bottom Ashes Treatment and Recovery Facility (ITVE) in the Sanitary Landfill of Mato da Cruz and, after adequate maturation, can be used as inert for the civil construction, public works and eventual landscaping recovery.
 

Ashes and wastes from gas treatment

About 30 kg are produced per ton of incinerated MSW.
Ashes and wastes from the treatment of gases are inert and sent to a cell belonging to the Sanitary Landfill of Mato da Cruz.
 

Recovery of combustion products

There is recovery of ferrous metals in the Plant and of ferrous and non-ferrous metals in the ITVE.

Treatment of combustion gases

Treatment of combustion gases

Nitrogen oxides removal system

Selective, non-catalytic removal process by injection of aqueous ammonia solution into the boiler combustion chamber.
 

Acid gas removal system

Semi-dry process by injection of lime milk.
 

Dioxins and furans removal system

By injection of activated carbon.
 

Heavy Metal Removal System

By injection of activated carbon.
 

Particle removal system

By high yielding bag filters.