Learning outcomes :
Describe the chemistry and technology of kraft and sulphite pulping of lignocellulosic substrates as well as recent developments in the manufacture of chemical and mechanical pulps
Evolution of the pulp production worldwide
Degradation of lignin in the Kraft process - the different phases of delignification - H Factor
Degradation of cellulose and hemicelluloses in the Kraft process. Kinetic aspects.
batch and continuous cooking technologies .
Kraft process improvement: increased fiber yield - Improved fiber quality - modified cooking (RDH, Superbatch, MCC, EMCC, ITC, lo-solid, compact ...)
Influence of wood species and size of chips on the quality of pulp.
Composition of the different liquors in the Kraft process.
Titration of kraft liquors (active alkali, effective alkali, residual alkali after cooking sulphidity.
Soda - anthraquinone pulping process
Washing technology - efficiency of washing
Evaporation-combustion-recovery of chemicals - simplified material and thermal balances
Degradation of lignin, cellulose and hemicelluloses in the sulphite process
Sulphite process technology
Main mechanical pulping processes - evolution (APMP, Thermopulp, RTS)
Bleaching of mechanical pulps. Brightness stability
Targeted skills: developing solutions and innovation; managing a process or system; acting for sustainable developmentPrerequisites
Basic chemistry of vegetal biomass components
Accessibility for people with disabilities : please contact us for further information
writen exam in the middle and at the end of the course
this course can be recovered in 2nd round
note = note du DS (examen écrit en présentiel ou à distance)
The course exists in the following branches:
Course ID : 4FMT1050
You can find this course among all other courses.
Rien de particulier :
Les enseignements ont lieu dans des salles de cours.
Penser à éteindre ordinateurs et lumières en quittant la salle.
The lessons take place in classrooms.
Also remember to turn off the lights and any equipment (according to current regulations) when leaving the rooms.
SUNDHOLM J. [et al.] Papermaking science and technology, book 5, Mechanical pulping. Helsinki : Fapet Oy, 1999.
GULLISCHEN J., FOGELHOLM C.J. [et al.] Papermaking science and technology, book 6A, Chemical pulping. Helsinki : Fapet Oy, 1999.
GULLISCHEN J., FOGELHOLM C.J. [et al.] Papermaking science and technology, book 6B, Chemical pulping. Helsinki : Fapet Oy, 1999.
GÖTTSCHING L., PAKARINEN H. [et al.] Papermaking science and technology. book 7, Recycled fiber and deinking. Helsinki : Fapet Oy, 2000.
FENGEL D., WEGENER G. Wood : chemistry, ultrastructure, reactions. Berlin ; New York : W. de Gruyter, 1984.
Date of update July 24, 2020