B - Operations – Transporting – 21 – B
Patent
B - Operations, Transporting
21
B
92/34
B21B 1/12 (2006.01) D21C 11/06 (2006.01) D21D 1/20 (2006.01)
Patent
CA 1303399
ABSTRACT OF THE DISCLOSURE The invention refers to the production of mechanical pulp from fibre containing material in a defibrating device, e.g. a refiner at superatmospheric pressure, whereby problems with recovery of heat energy and with unstable working pressure con- ditions are solved in a recovery system following the refining with the separation of steam and fibre, possible cleaning of the steam in a scrubber and steam transformer in order to produce clean and fresh steam by means of indirect heat exchanging, to increase the fresh steam energy content, and to create a greater buffer volume for regulating the working pressure at the fibrillation proper by placing the pressure regulation after the steam transformer.
512149
Fetherstonhaugh & Co.
Kvaerner Pulping Aktiebolag
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