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– intensity see P-factor
– kinetic weight-loss parameters 332
– kraft process see PHK process
– liquor-to-wood ratio 326
– P-factor concept 343–345
– prehydrolysis-kraft process 347–350
– wood yield temporal development for
Beechwood 331
Pressure
– acid sulfite cooking cycle 427
– calculated influence on impregnation in
Kazi and Chornet model 157
– CBC process 283
– during VisCBC hardwood cooking process
– grinding process parameters 1084
– influence equation in Kazi and Chornet
Diffusion model 151
– predicted time-dependency in selected
Model of kraft cooking kinetics 224
– Rauma three-stage sulfite cook 471
– two-stage delignification operating
Conditions 730
Pressure diffuser
– Kvaerner 555
– pulp washing equipment 554–555
Pressure disk filter 990
Pressure drop, centrifugal cleaning operating
Parameters 587
pressure grinding 1095–1098
Pressure groundwood grinder 1095
Pressure pulse profile, contoured-drum rotor
(S-rotor) 573
Pressure relief, acid sulfite pulping process
chemistry 430–434
Pressure screen 568
– basket design 1118
– capacity 575
– equipment 601–604
– protecting 597
– rotors 1117–1118
– single-stage 1116
Pressure steaming, effect on ion diffusion
Pressure swing adsorption 828
Pressure washer
– drum rotation speed and effective filtration
Pressure 536
– pulp feed air content 534
– pulp feed consistency 533
– pulp temperature 535
– rotary drum 529
Pressurization, hydrostatic 405
pressurized peroxide bleaching 866–867
Pressurized reactors, bleaching equipment
625–627
Prestage, hot chlorine dioxide stage 765
pretreatments, ozone bleaching 818–822
Primary alcohols, ozone decomposition,
Promotor 789
Primary effluent treatment 1004
Primary fines, beech pulp 1020
Primary wall, cell components 42, 44
Printing paper grades, mechanical pulp
Properties 1142
Probability separation 563
Process chemistry
– acid sulfite pulping 427–465
– kraft cooking 229–325
Process control
– flow chart 96
– wood yard operations 95
Process steps
– continuous cooking 378–380
– displacement cooking 368
– EMCC®/ITC 387
– Lo-Solids™ process 389
– MCC 385
Process variables 698
– kraft cooking kinetics models 199–211
– oxygen delignification 701–708
Processing rings, debarkers 78
Producer responsibility 1192, 1194
Profiling line 88
Profiling router, tool arrangement 88
Prohibitive materials, recovered paper 1162
Promoters, ozone generation 789
Protecting pressure screen 597
Protective layer, cell components 48
Protons, NMR-spectroscopy 1261
Prunus, semi-ring-porous hardwoods 53
PS see polysulfide
PS/AQ
– mill experience 316
– pulp RLCC composition 640–641
PSA see pressure swing adsorption
Pseudo first-principle models, kraft cooking
kinetics 198–199
Pseudotsuga menziesii
– chemical composition of wood 23
– inorganic composition 40
– resin acid composition 36
– spiral thickenings 44
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