District heating
Wood chip plants: 400 - 15,000 kW
Linka’s fully automated wood chips system is here adjusted for producing steam. Efficient combustion continues to ensure total chip burnout and efficiencies of up to 96.7 percent.
Steam plant for wood chips
Linka's steam plant is largely identical to the hot water plant. The big difference is that the boiler is designed differently, as it is steam that needs to be produced.
The chipping plant usually consists of a scraper. A series of horizontal scrapers transports the tile to a recessed crosscut auger. This is monitored by a photocell, which ensures that the system is started when the crossbar is empty.
For large installations, you can choose to handle the chips by crane. Here a travers crane with grip is installed in the storage, which grabs the wood chips and transports it to a funnel in front of the boiler. The funnel is installed with a hydraulic piston that pushes the wood chips into the boiler.
The chain series is supplied in standard sizes. When calculating from power output to steam output, take the boiler power in kW and multiply by a factor of 1.56 to get the boiler steam output in kg/h. For example, an 800 kW boiler can produce 1,250 kg of steam per hour.
The systems are also available for different operating pressures from 0.9 - 16 bar.
Specifications
Linka H-boiler – for wood chips
The H-boiler is a cylindrical, highly efficient channel flue boiler in a 3-pass or 5-pass version, designed for biomass combustion. The boiler features a smooth flame channel and water-cooled rotation chambers. It is dimensioned to achieve full combustion and efficient utilisation of the radiated heat in the flame channel, whilst convection heat is maximum utilised in the subsequent flue gas sections.
A moveable, water- and air cooled step grate is installed in the front of the boiler, to prevent clinker. Through our world patented combustion system, secondary air is added to the process in a downstream principal, to create the correct amount of turbulence in the combustion area. Hereby the developed gasses are completely burned,
resulting in higher efficiencies and better values on emissions. Thorough insulation of the boiler with 100 mm mineral wool results in a minimal heat loss. The boiler is all-welded and gas tight, and delivered with flanges, connecting branches, counter flanges and safety outlets. A cleaning hatch at the backend of the combustion chamber makes inspection and cleaning easy.
The standard version is designed for hot water with an operating pressure of 4 bar, and a maximum operating temperature of 110⁰ C. The H-boiler can be designed for High Pressure Hot Water with a temperature of eg. 160º C, and adjusted for a pressure of eg. 10 bar.
An elegant exterior of blue plastic coated steel plates gives the Linka H-boiler an appealing, modern design.
Automated usability
Linka has many years of experience in developing the special, advanced combustion technology for wood chips and other biofuels, and in utilizing the technology optimally in combustion plants with high operational reliability and usability.
Economizer option
It is possible to add an economizer, which will cool the flue gas, boiler fittings and pump unit.
Automatic ash extraction
A stainless steel, laterally-mounted ash auger is fitted in the base of the boiler, to transport the ash out to the inclined auger. This auger moves the ash onwards to an ash container, e.g. outside the building.
Automatic flue pipe cleaning
A number of pressure tanks are mounted on the boiler along with soot valves. These inject air into the boiler’s flue pipes to keep them clean. This way, manual cleaning of the pipes is rarely necessary.
Electronic control and surveillance system
Control and surveillance of the plant is based on a PLC control system (Programmable Logic Controller). This ensures controlled regulation of fuel supply to maintain maximum heat production from the boiler. All set points are readable and can be adjusted on a touch screen display. The oxygen percentage can also be read simultaneous on the display. Furthermore there is an alarm outlet on the control system.
The control system can also be connected to the internet and accessed by computer, tablet or smartphone. This enables you to receive remote support from Linka during commissioning and maintenance, and in the event of a disruption.
Want to know more about your opportunities?
Our highly qualified team is ready to consult and advice you about the best energy solution based on your specific needs.
Tine Meieriet Elnesvaagen
Linka has installed a 3,000 kW steam plant to supply steam to TINE's Elnesvågen plant. By using steam from wood chips, the dairy has significantly reduced its CO2 emissions.
Yester Farm Dairies
In 2017 our British partner, Manco Energy, installed a steam plant at a dairy in Scotland. The dairy is now producing steam from CO₂ neutral biomass. The boiler can produce 1.5 tons of steam every hour.