Sulfite cooking liquor

– acid 396

– ionic species concentrations 400–401

Sulfite dissolving pulp, beechwood 433

Sulfite pulp 1009

– beating resistance 1011

– carbohydrate composition 470

– fibers, global production 9

– purification efficiency 942

– reflectance and absorption coefficient

Spectra 611

– resin reduction 960

– R-values 1015

Sulfite pulping

– alkaline 475–482

– alternative concepts 465–482

– pH ranges 393

Sulfitolysis, lignin 407

Sulfonation

– b-O-4 arylether structures 410

– lignin 407–408

– phenylpropane a-carbonyl-b-arylether

Structures 412

– a-position of coniferylaldehyde-type

Structures 412

– reactions in neutral sulfite pulping 412

Sulfonic acid

– formation from xylose under neutral sulfite

Conditions 422

– reactions with glucose 422

Sulfur-containing carbohydrates, formation

421–425

Sulfur dioxide 998

– amount as function of H-factor 435

– balance 434–449

– bound–free equilibrium 405

– concentration in sulfite cooking liquor

400–401

– diffusion coefficient at 20 °C 404

– partial pressure–temperature relation in

Sulfite cooking liquor 402

– temperature dependence of dissociation

Constant Ka,1 397

sulfur species, balance 436–437

Sulfuric acid, pulp acidification 811

Sulzer Ahlmix 621

Sulzer flow discharger 627

Sulzer Salomix agitator 628

Super pressure grinders 1096

Superbatch® process

– cooking cycle 136–137, 374

– results 280–282

Index 1345

– simplified flowsheet 374

– technology and equipment 373–374

Superheaters, kraft recovery boiler 981