Straw: 1,500 – 10,000kW
A straw heating plant can be built in many ways, depending on customer and operating requirements. LIN-KA has three basic construction methods depending on boiler size.
Plant sizes from 1,500 to 3,000kW are basically built as small outdoor plans, with a straw shredder. When large quantities of straw are to be burned, a feeder system with belts at 2 or 3 different levels can be installed with an elevator to lift the bales down to the shredder. Alternatively, a straw crane can be installed which brings the bales to the shredder.
3,000 to 8,000kW plants are constructed with a straw cutter as feeder unit and where a crane is usually used. A traverse crane picks up the bales and takes them to a safety box which is also located in the barn. The bale will then be hydraulically fed into the cutter which turns the bale onto its edge before a slice is cut off hydraulically and fed into the boiler for incineration.
Finally, a system is also available that works on the cigar principal, which works best for plant sizes from 8,000 to 10,000kW. A crane and safety box are used to move the bale into a drawer which is offset in the bale’s width in relation to the boiler. When the drawer closes, the bale is directly aligned with the boiler inlet, and is slowly fed into the boiler as it burns.