ΜΕΛΕΤΗ ΤΗΣ ΠΑΡΑΓΩΓΗΣ ΧΑΡΤΟΜΑΖΑΣ ΜΕ ΧΛΩΡΙΩΣΗ ΠΡΟΥΔΡΟΛΥΜΕΝΟΥ ΑΧΥΡΟΥ: ΠΡΟΒΛΗΜΑΤΑ ΕΦΑΡΜΟΓΗΣ
THE PURPOSE OF THIS INVESTIGATION IS THE STUDY OF A NEW TECHNOLOGY FOR THE PRODUCTION OF PAPER PULP. THE METHOD CHOSEN IS THE COMBINATION OF ACID PREHYDROLYSIS, GAS CHLORINATION AND ALKALINE EXTRACTION. AN ORIGINAL LABORATORY-SCALED, CONTINUOUS- FLOW CHLORINATION REACTOR WAS DESIGNED AND CONSTRUCTED, AND THE MOVEMENT OF THE SOLIDS INSIDE IT WAS STUDIED. NEXT, THE MORPHOLOGICAL AND CHEMICAL ALTERATION IN THE MATERIAL BECAUSE OF THE PRETREATMENTS USED (GRINDING, SCREENINGOF THE RAW MATERIAL) WAS INVESTIGATED. THEN, A HETEROGENEOUS KINETIC MODEL FORTHE STRAW CHLORINATION WAS DEVELOPED AND IT WAS DETERMINED THAT THE RATE CONTROLLING STEP APPEARS TO BE INTERNAL DIFFUSION THROUGH THE REACTED STRAW LAYER, WITH A DIFFUSION COEFFICIENT WHICH DECREASES WITH INCREASING LAYER THICKNESS AND, ALSO, WITH DECREASING STRAW PARTICLE AVERAGE SIZE. FINALLY, THE PULP MECHANICAL STRENGHTS AND BRIGHTNESS WERE DETERMINED AND THE EFFECT OF THE MAIN TREATMENT PARAMETERS ON THE PULP PROPERTIES WAS EXAMINED.
Chlorination, Kinetics, MECHANICAL STRENGTHS, MECHANICALPRETREATMENTS, Paper, PREHYDROLYSIS, PULP, STRAW, ΑΧΥΡΟ, Κινητική, ΜΗΧΑΝΙΚΕΣ ΑΝΤΟΧΕΣ, ΜΗΧΑΝΙΚΕΣ ΠΡΟΚΑΤΕΡΓΑΣΙΕΣ, ΠΡΟΥΔΡΟΛΥΣΗ, Χαρτί, ΧΑΡΤΟΜΑΖΑ, Χλωρίωση, Engineering and Technology, Chemical Engineering, Επιστήμες Μηχανικού και Τεχνολογία, Επιστήμη Χημικού Μηχανικού
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