| http://www.w3.org/ns/prov#value | - ercurrent or concurrent flow as long as possible, i.e. at the beginning of the firstsection (80) and at the end of the third section (100) of the shaft crystallizer (70).In the third zone (first section 80 of the shaft crystallizer 70), the PET granules are heated under periodically acting mechanical disturbance preferably with hot gas, in particular nitrogen, in countercurrent flow with respect t
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