The Ideal Solution for

COMPANIES - DISTRICT HEATING PLANTS - AGRICULTURE etc.

In Denmark LIN-KA Maskinfabrik A/S is one of the leading suppliers of large sized wood pellet systems for companies, institutions, schools etc. The size of the system are typically somewhere between 400 kW and 5000 kW. Wood pellet firing is a very convenient and efficient method of producing heat, when considering a solid bio fuel.

The system is feed with pellets using either an external glass fibre silo or container, or an internal silo. Similar to oil, wood pellets are delivered throughout the country. Finally it is notable that wood pellet firing means a saving of about 40-55% compared with heating with oil or gas.

A complete and functional LIN-KA fully automatic wood pellet firing system in a transportable stoking room placed in a 20' steel container with roof made of plastic covered steel plates, produced as tile (see picture below left).

The system consists of a LIN-KA Danstoker boiler, complete O₂- and PLC-control unit, pumps, expansion tank etc. The firing system is supplied with wood pellets by means of an inclined transportation auger from the other container, where wood pellets are stored. The fuel container is made so that it is possible to blow the pellets into the container, or fill it with a conveyor from an ordinary truck.

What we have shown here is only an example of a solution where a boiler room is not available.

Wood pellet system with external / internal silo

The system usually consists of an external glass fibre silo or an internal silo room that contains approximately 30 m³ wood pellets and a boiler system with automatic ash removal. 

The pellets are delivered by an inclined transportation auger to an air lock system, and is lead on by a stoker screw to a water-cooled hearth, mounted in a LIN-KA H-boiler, where an efficient combustion takes place. 

In the water-cooled combustion hearth the pellets are converted into heat by temperatures of 1200-1400ºC. The heat is directly transferred to the circulating boiler water. The effective blend of fuel and combustion air in the hearth ensures a complete incineration of fuel which leads to an efficiency of more than 95%.

Automatic removal of ashes reduces the daily work on the system to an absolute minimum.

The system is fully automatically controlled by a PLC-control unit, which at the same time monitors that the system is constantly performing its best