The definition of “biomass boilers” refers to all boilers and plants powered by fuels of organic origin: industrial and urban waste of plant or animal origin which can no longer be used, but which can be transformed into electricity and heat.
According to the directive 2009/28/EC of the European Parliament, biomass means “the biodegradable fraction of products, waste and residues from biological origin from agriculture (including vegetal and animal substances), forestry and related industries including fisheries and aquaculture, as well as the biodegradable fraction of industrial and municipal waste”.
The biomasses, and fuels that derive from them, represent a source of renewable energy because the carbon dioxide emitted during the combustion process is more or less the same as the one which the plants absorb during their life and release after their natural death. Therefore, the combustion of biomass does not lead to an increase of carbon dioxide in the atmosphere, main cause of the greenhouse effect, but rather it represents an additional benefit to the environment because of the biodegradability of the substances that are burned.
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Our boilers are designed to burn common biomass fuels like wood waste chips and pellet, but also other organic waste, such as Pellet, wood chips, sawdust, briquettes, bark, chicken litter, horse litter, mushroom bed, miscanthus, nuts shell, peat, waste derived fuels, vine shoots, olive pomace, simple pomace, etc. For special fuels a chemical analysis is required; then we’ll be able to design your required personal plant.
The disposal of industrial processing waste, significantly affects business costs. Biomass plants transform waste into a resource, obtaining electrical energy and heat resulting from their combustion.
The biomass plants we design are suitable for every type of industrial process complying with the updated pollution regulation. The boilers can be produced with “water jacket” technology, in reduced dimensions and higher efficiency, also available with adiabatic chamber. We offer and supply complete solutions, including storage/feeding, transport, combustion and smokes filtering system. We steadily follow and support our customers by each stage of the project from choosing the more suitable system to commissioning.
The plant is normally divided between various sections. The main ones are:
- Storage silo
- Feeding system
- Boiler
- Combustion grate
- Filtering
- Chimney
- Storage silo
The storage silo is the part of the plant where the biomass is stored and then moved and transported to the feeding system.
We can realize different types of storage silo according to the fuel characteristics and customer’s needs.
- Feeding system
The biomass is transported from the storage silo up to the boiler and poured into the combustion grate through the feeding system.
Usually the feeding system is compounded by one (or more) augers and/or a chain conveyor, designed to guarantee the right supply of fuel to the boiler.
The system is designed in accordance with safety and fire prevention rules.
- Boiler
Biomass boilers are compounded by a combustion chamber and a heat exchanger.
The combustion chamber, in which the combustion takes place, is equipped with fans for air addiction and probes for the combustion parameters control. Combustion chambers can be adiabatic or water jacket designed.
The combustion, which take place on a fixed or moving grate, generates smokes that go into the heat exchanger and ashes as waste. The ashes can be either collected by automatic or manual devices.
The heat exchanger uses the energy of the smokes for the production of hot water, superheated water, steam, etc., according to customer’s request. All the safety devices and the automatic exchanger cleaning system are generally included in the supply
Our boilers can be produced and certified according to all the world rules (ASME, PED, etc.).
- Combustion grate
The grate is the area where the combustion material is poured. The grate can be of 3 types:
- Fixed
- Flat moving grate
- Inclined moving grate
The flat fixed grate is the simplest and cheapest one; it requires a regular cleaning of the ashes.
The moving grates are used for medium-large size boilers and they are equipped with devices for the automatic ashes extraction. This type of grate allows a better combustion process control, ensuring more efficiency.
- Filtering
The smokes coming out of the heat exchanger must be cleaned and, generally, there are two methods used for this purpose (separately or together):
- Cyclone (or multicyclone) filters for a first filtering which respect the main pollution regulations
- Bag or electrostatic filters for a broader filtering action
- Chimney
The smokes are expelled into the atmosphere by the flue after filtering. The expulsion is guaranteed by the presence of the ID fan which push the smokes through the chimney.
In a biomass plant other components may be present, depending on the fuel characteristics and customer requirements; a correct basic layout avoid future problems.
INSTALLATIONS
The use of biomass has ancient origins. Wood has always been burned to warm up and to cook. The individual consumption today has been developed on a large scale, entering the most varied industrial applications.
Modern power plants are able to utilize the energy contained in biomass to produce hot water, superheated water, steam and electricity, diminishing the environmental impact compared to non-renewable energy sources.
Hot water
Hot water boilers are used for temperatures below 110/115°C; these boilers are mainly used for the centralized heating of hospitals, greenhouses, industrial sites, etc. The hot water systems are generally more favorably accepted in comparison with others system thanks to their simplest management.
Superheated water
These boilers are used for temperatures above 110/115°C. They are mainly used in the district heating sector and in specific industrial applications (food, manufacturing, etc.). This type of system is also applicable in cogeneration plants.
Steam
Our range of biomass boilers includes steam generators (saturated or superheated).
The applications range varies from industrial sector (food, pharmaceutical, etc.) as well as to the production of electricity through steam turbines.
Cogeneration and trigeneration
Cogeneration is the simultaneous production of electricity and heat, with additionally the production of cold we obtain the trigeneration process.
We can produce and deliver cogeneration plants (trigeneration) turnkey.
BOILERS
Model | Type | Minimum potential | Maximum potential |
GPT – AC | Fire tube, 3 passes, hot water production | 900 kW | 9000 kW |
GPT – AS | Fire tube, 3 passes, heater water production | 900 kW | 9000 kW |
GPT – CP | Fire tube, 3 passes, steam production | 1000 kg/h | 12000 kg/h |
GPT – HA | Fire tube, 3 passes, hot air production | 400 kW | 1500 kW |
GPT – PW | Cogeneration | 50 kWe | 5000 kWe |
Standard Boilers Data | Design pressure | Boiler Room Dimensions (mm) | Performance | MAX Weights with water (kg) |
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GRATE
GF-P |
GRATE
GF-M30 |
GRATE
GM-M30 |
GRATE GM-M50 |
|||||
1200 | GPT/AC | 6 bar 10 bar |
8000×5000 H.4200 | 9000×6000 H.4500 | 9000×6000 H.4500 | 9000×6000 H.5000 | 1200 kW | 18.800 |
GPT/AS | 8000×5000 H.4350 | 9000×6000 H.4650 | 9000×6000 H.4650 | 9000×6000 H.5150 | 1200 kW | 18.800 | ||
GPT/CP | 8500×6000 H.5880 | 8500×6000 H.5880 | 9000X6500 H.5960 | 9000X6500 H.6520 | 1860 kg/h | 23.800 | ||
1650 | GPT/AC | 6 bar 10 bar |
8500×6000 H.4200 | 8500×6000 H.4500 | 9500×7700 H.4500 | 9500×7700 H.4800 | 1650 kW | 26.100 |
GPT/AS | 8500×6000 H.4350 | 8500×6000 H.4650 | 9500×7700 H.4650 | 9500×7700 H.4950 | 1650 kW | 26.100 | ||
GPT/CP | 9500×7000 H.6420 | 9500×7000 H.6420 | 9500×8000 H.6500 | 9500×8000 H.7100 | 2560 kg/h | 30.800 | ||
2100 | GPT/AC | 6 bar 10 bar |
10000×7500 H.4600 | 10000×7500 H.4900 | 9500×8500 H.6000 | 9500×8500 H.5700 | 2100 kW | 35.800 |
GPT/AS | 10000×7500 H.4750 | 10000×7500 H.5050 | 9500×8500 H.6150 | 9500×8500 H.5850 | 2100 kW | 35.800 | ||
GPT/CP | 9500×8000 H.7145 | 9500×8000 H.7145 | 9500×9000 H.8270 | 9500×9000 H.8270 | 3255 kg/h | 43.300 | ||
3000 | GPT/AC | 6 bar 10 bar |
11000×8500 H.5500 | 11000×8500 H.5800 | 11000×8500 H.5800 | 10500×8500 H.6947 | 3000 kW | 50.800 |
GPT/AS | 11000×8500 H.5650 | 11000×8500 H.5950 | 11000×8500 H.5950 | 10500×8500 H.7097 | 3000 kW | 50.800 | ||
GPT/CP | 11000×9000 H.8200 | 10500×9000 H.9450 | 10500×9000 H.9530 | 10500×9000 H.9450 | 4650 kg/h | 60.000 |
Also available the follow special models: |
• Performance 5000 kW 7750kg/h |
• Performance 7000 kW 10850 kg/h |
• Performance 9000 kW 12000 kg/h |
Standard design pressure from 6 bar to 25 bar – Higher design pressures available upon request.
For any requests for special designs and applications extra from those included in the catalogue, a feasibility analysis must be executed.
GRATE
Model | Type | Minimum potential | Maximum potential |
GF – P | Fixed grate for pellets | 900 kW | 3000 kW |
GF- M30 | Fixed grate for wood chips humidity up to 30% | 900 kW | 3000 kW |
GM – M30 | Moving grate for wood chips humidity up to 30% | 900 kW | 9000 kW |
GM – M50 | Moving grate for wood chips humidity up to 50% | 900 kW | 9000 kW |
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GARIONI NAVAL
We manufacture and market all over the world recovery boilers, steam, thermal oil, steam generators, water tube boilers, biomass and electric boilers for industrial heating.
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SVECOM – P.E. Srl
Via della Tecnica, 4
36075 – Montecchio Maggiore (VI) – Italia
Tel. +39 0444 746211
Fax. +39 0444 498098
VAT / Tax code: 00238030241
Register of companies of Vicenza: n. 00238030241
REA of Vicenza: n. 108417
Social Capital: € 3.000.000,00 i.v.