according to the invention any type of shut-off element which has a pressure resistance of Up to approximately 40 bar is suitable,.g. By means of the piston a gentle compacting of the solid is obtained. The compactor drive unit 42 may, however, also be designed as a hydraulic system, or as a mechanical system driven by an electric motor. 4 the filling phase is carried out. 2 is a diagrammatic view of the apparatus for carrying out the process according to FIG. The use of these celluloses with a low degree of crystallinity is not limited to the use described above, but can also comprise a use as a polymer matrix for the manufacture of compositions intended to be shaped by conventional moulding techniques such as injection. By doing so an increased accessibility and reactivity of the treated polysaccharides can be obtained.
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In the bottom part of the reactor chamber 81 several ammonia inlets 90 are provided, offset relative to one another with regard to height and radially. Two ball valves arranged in tandem, can be used as shut-off elements. In the conveying means feedback device a filter unit may be used to filter solid particles out of the returned conveying means or propellant gas flow. The system is heated to. After the compacting piston 39 has again reached its rest position A, the central control unit now by corresponding electric signals and setting devices closes the shut-off device 53, as a result of which the reaction chamber 50 is sealed off hermetically from the compacting.
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