Hardwoods

– accessory compounds 37–39

– apparent prehydrolysis rate constants 334

– axial parenchymal cells 54

– bleaching 1126

– cellulose 22

– chemical composition of wood 23

– defibration conditions 1102

– diffuse-porous hardwoods 50, 53

– extractives 38

– flavonoids 38

– hemicellulose 22

– homocellular rays 54

– isoflavones 38

– kinetic prehydrolysis model 329–343

– lignans 38

– lignin 22

– lignins 33

– macromolecular substances 22

– parenchymal cells 54

– penetrability 135

– phenolic compounds 38

– pits 46

– pulp 1010

– pulp bleaching 1126

– rays 54

– resin-rich 465

– ring porous hardwoods 53

– sapwood conversion to 59

– semi-ring-porous hardwoods 53

– steroids 37

– tannins 38

– triglycerides 38

– vessels 53

– xylan chains 29

HBL see hot black liquor

HC cleaner, Metso 606

HC technology 721

HCE see hot caustic extraction

HD see hot displacement

Heartwood, Pinus monophylla 36

Heartwood formation 57

Index 1315

heat capacity, black liquor 972–973

Heat exchange, kraft recovery boiler 981

Heat management

– continuous cooking process step 380

– displacement cooking process step 371

heat recovery 1121–1122

– Andritz Lo-Level 391

– conventional 391

– flow sheet 1122

Heat transfer rate, evaporator 976

Heating and cooking, displacement cooking

Process step 370

Heating-up, acid sulfite pulping process

Chemistry 430

Heating values, black liquor solids 969

Heavy metals, ozone decomposition, initiator

hemicellulose 28, 835, 1026–1030

– Abies balsamea 29

– Acer rubrum 29

– acid degradation reactions 327–329

– acid hydrolysis 418

– acid-catalyzed hydrolysis 341

– amount 936

– anhydro-sugars 28

– Betula verrucosa 29

– Carboxyl groups 1037

– CBC process 286

– cell wall components 41

– cellulose/hemicellulose ratio 1016

– concentration 1026

– content as function of P-factor in

unbleached Visbatch® pulp 361

– content in lye 947

– content in pulp from modified kraft

Cooking 240

– content in softwoods and hardwoods 22

– controlled removal 719

– degradation 175, 251

– delignification 251

– deoxy-hexoses 28

– discoloration 1027

– distribution 1048–1051

– DP 28

– enrichment 1050

– Fagus sylvatica 29

– fiber tenacity 1027

– fiber wall 1048–1051

– Fraxinus excelsior 29

– Gustavson and Al-Dajani kinetic

Degradation model 252

– hardwoods 22

– hexoses 28

– hydrolysis 325–326

– in relation to screened yield 362

– in relation to viscosity-to-kappa number

Ratio 364

– Larix decidua 29

– pentoses 28

– P-factor 361

– Picea abies 29

– Picea mariana 29

– Pinus strobus 29

– Pinus sylvestris 29

– Populus tremuloides 29

– prehydrolysis 325–326

– presence 945–947, 947

– pulp 240, 361

– removal 952, 957

– short-chain hemicelluloses removal 952

– softwoods 22

– Tsuga canadensis 29

– Ulmus americana 29

Hemp fibers, cell dimensions and chemical

Composition 4

Heterogeneity

– hardwood fibers 123–124

– softwood fibers 123

– wood structure 123–129

Heterogeneous gas phase, ozone bleaching

Heterolytic fragmentation 749

– chlorine bleaching 746

Heterolytic ozonolysis 792

Heteropolysaccharides 28

HexA 187, 240, 251–254, 257–259, 267–270,

278–279, 302, 774, 830, 1016

– commercial paper-grade pulp 1014

– degradation rate in Gustavson–Al-Dajani

Дата добавления: 2015-10-21