centre of the flow the amount of obliqueness in the mounting is appropriately 45 u00b1 15 u00b0 relative to the vertical the oblique orientation downwards is favourable for achieving an ejecting influence on the granulate flow and for avoiding the risk that the dilution fluid splashes upwards in the stand pipe a number of nozzles at least four are arranged around the stand pipe 22 40 u2032 preferably with equal distances between them with a stand pipe 22 having a diameter of 800 1 500 mm it is appropriate that 10 40 nozzles are arranged around the periphery of the stand pipe it is appropriate that the distance between adjacent nozzles be less than 50 300 mm if high pressure nozzles with fanned plumes of fluid are used the nozzles may be arranged with a greater distance between neighbouring nozzles it is important that the dilution fluid is added evenly around the complete circumference of the flow of granulate and at a sufficiently high pressure in order to penetrate to the centre of the granulate flow the pressure setting is an engineering adaptation that is based on the nozzles being used the diameter of the pipe and the rate of flow of fragmented pulp fig6 shows an alternative embodiment of the invention the difference between the embodiment shown in fig3 and this embodiment is that the dewatering arrangement in this case is a deewatering screw of thune type or sudor type in which a conical screw 80 a compresses an incoming flow 20 of pulp during dewatering against a surrounding space through a screwed surrounding perforated housing and in which filtrate 80 b is led away from this space the driving force for the screw is normally located at its inlet but the.