ARRANGEMENT, SYSTEM AND METHOD FOR HANDLING NON-WOOD PLANT MATERIAL

摘要

A feeding arrangement (100) for feeding non-wood plant material having a bulk density of 40-90 kg/m3 to a treatment vessel (200), the feeding arrangement comprising a plug screw feeder (40) for feeding the plant material to the treatment vessel, the feeder comprising a plug screw (10) and a corresponding plug screw housing (11) surrounding the plug screw (10), a force-feeding screw (20) for feeding incoming material to the plug screw and a corresponding force-feeding screw housing (21) surrounding the force-feeding screw (20), the force-feeding screw being arranged to provide the material to an inlet section(12) of the plug screw (10), a feeding device (50) being arranged to feed incoming material to the force-feeding screw, and where the distance (D) between an outermost point of a last screw thread (23) of the force-feeding screw (20) to a point on the outer diameter of the plug screw (10) at the inlet section (12) is 0-90 mm. A system (1000) and a method for treatment of non-wood plant material comprising such a feeding arrangement (100).