Duino / Thermoelectric power plant
| Primary Energy Necessary | 140,518 TEP |
| Electricity used in the plant | 397,112 MWh |
| LV Steam used in the plant | 439,926 t |
| Electricity sold to the market | 327,908 MWh |
- Constructed in 1958 with the installation of two 60t/h 52 bar "Gonzales" boilers with 4 steam turbines named TV1, TV2, TV3 and TV4. The TV1 and TV4 were counter–pressure/tachometric turbines with 3.15 kV generator voltage and a maximum output of 5,000 kW (TV1) and 7,500kW (TV4). The TV2 and TV3 were low pressure condensing turbines each with 3.15kV generator voltage and a maximum output of 3,600kW.
- 1° upgrade: 1961/1962 – installation of a traditional 200 t/h 80 bar 40MW condensing "Cavalieri" boiler (TV6). A second condensing steam turbine with 5.25kV generator voltage and a maximum output of 1,500kW (TV5) was also installed as backup to the TV6.
- 2° upgrade: installation of a traditional 120 t/h 52 bar "Cavalieri" boiler.
- 3° upgrade: 1990/1991 – Installation of two 38MW Turbogas generators.
- Revamping: replacement of the two existing Turbogas generators with higher yielding generators.
Power Plants
- Two 46 MW GE LM 6000 Turbogas generators with steam generation values, including pre-combustion, ranging between 70 ton/h at 40 bar and 15 ton/h at 2,5 bar.
- A 36 MW condensing steam turbine with low pressure spills to supply steam to the paper machines.
- A traditional 90 ton/h 40 bar steam generator.
- Two counter–pressure/tachometric steam turbines with 3.5 MW (TV1) and 4 MW (TV2) generator voltage (both units produce less than stated by the manufacturer as they operate at reduced pressure).
The current configuration can be seen by subdividing the plant in two sections.
1. Conventional section
- A traditional boiler.
- Two counter-pressure/tachometric steam turbines (TV1 – 4). Each turbine is fitted with a synchronous alternator. The other turbines (TV2–3–5) have been phased out.
2. TurboGas section
- Two LM 6000 gas turbines, each fitted with a synchronous alternator.
- Two dual pressure recovery boilers, fuelled by exhaust heat from the gas turbines and any eventual post–combustion with dedicated burners, each complete with thermo–physical degassers, circulation and fuel feed pumps.
Boilers
| Boilers | 1 | |
| Manufacturer | Center | |
| Year of manufacture | 1965 | |
| Fuel | Gas | |
| Minimum seal pressure | Bar | 42 |
| Steam operating pressure | Bar | 40 |
| Steam operating temperature | °C | 380/420 |
| Steam capacity | t/h | 90 |
Steam Turbine
| Steam Turbine | TV1 | TV4 | TV6 |
| Manufacturer | STAL | STAL | STAL |
| Year of manufacture | 1958 | 1958 | 1964 |
| Manufacturer | contr. | contr. | mista |
| Generation voltage kV | 3.15 | 3.15 | 10.5 |
| Alternator power kVA | 6,250 | 9,375 | 50,000 |
| Mechanical power kW | 5,000 | 7,500 | 40,000 |
Turbine a gas
| Turbine a gas | TG1 | TG2 |
| Model | LM 6000 | LM 6000 |
| Year of manufacture | 2008 | 2008/2009 |
| Fuel | Methane | Methane |
| Exhaust fumes capacity kg/s | 131 | 131 |
| Exhaust fumes temperature °C | 451.4 | 451.4 |
| Electric power kW | 46,000 | 46,000 |
| Alternator | synchronous | synchronous |
| Manufacturer | FK Brush | FK Brush |
| Voltage generated | 10.5 | 10.5 |
| Electric power MVA | 58 | 58 |
| Portata vapore totale t/h | 59 | 59 |
Recovery Boiler
| Recovery Boiler | GVR1 | GVR2 |
| Year of manufacture | 1990 | 1990 |
| Manufacturer | MACCHI | MACCHI |
| Exhaust fumes capacity kg/s | 165 | 165 |
| Exhaust fumes entry temperature °C | 519 | 519 |
| Exhaust fumes exit temperature°C | 112 | 112 |
| Steam pressure 1° level bar | 40 | 40 |
| Steam temperature 1° level °C | 380/420 | 380/420 |
| Steam enthalpy 1° level kJ/kg | 3,168 | 3,168 |
| Steam pressure 2° level bar | 2.8 | 2.8 |
| Steam pressure 2° level bar | 160 | 160 |
| Steam enthalpy 2° level kJ/kg | 2,773 | 2,773 |
.jpg)
