Recycling Technology and Pulps (3 cr)

Objectives (course unit)

The student knows
- the raw-materials, production and usage of recycled pulp
- the cost structures and environmental effects of recycled pulp
- control the processes and the quality.

Content (course unit)

Raw materials: Availability and use of recycled paper in Finland and abroad, recycled paper and cardboard. Production of recycled fibre pulp: de-inking. De-inking process: handling recycled paper, dispersion, cleaning, de-inking, de-inking chemicals, washing, bleaching, clarification. Environmental effects: de-inking waste and slurry, life cycle analysis. Characteristics and use of recycled fibre pulp.

Exam schedules

Task (dip- and OCC-pulping

Exam In April 2016 (chemical pulping)

Assessment methods and criteria

Evaluation:
Exam
Activiness in contact lessons and tasks, >80% -> 10% of Grade
Grades 1-5

Assessment scale

0-5

Teaching methods

Contact lessons
Tasks and process demonstrations
Student own work
Interactive working in groups
Exam

Learning materials

Material in Moodle-application,
FAPET: part Recycling technology, Chemical pulping
KnowPap and KnowPulp application

Student workload

Contact lessons 36h
Student own work 3x26h

Content scheduling

Week 2 Introduction, Implementation,
Task, Terminology,
General information on recycling and dip- and OCC-pulping.

Week 3, 4, 5
Grades of recycled papers and paperboards; Grades, Quality,
Statistics, Applications
Storage and handling of recycled papers and other raw
materials
De-inked pulping:
Pulping of recycled papers
Coarse screening and cleaning
Fine screening and de-inking
De-inking: flotation, de-inking chemicals, handling of de-inking rejects, Water purification
Washing and dispersing
Bleaching and finishing of pulp
Process automation, Pulp quality monitoring, Quality of pulp, Different DIP-processes
OCC- and mixed waste pulping
End use applications of DIP-pulps and OCC-pulps, Properties, Quality problems, Cost of pulps

Task: DIP-pulping and OCC-pulping

Week 9 Season holiday

Week 6-16
Raw materials, chemicals of chemical pulping,
Principles of alkaline chemical pulping,
Unit processes of fiberline (wood handling, cooking process, pulp washing and bleaching, pulp drying)
Chemical recovery (evaporation, recovery boiler, white liquer plant..)
Production of bio chemicals,
Chemical pulps, the quality properties of chemical pulps,



Week 16 Exam

36 h

Completion alternatives

The student can subsitute this course (with the university level course)

Assessment criteria - satisfactory (1-2) (Not in use, Look at the Assessment criteria above)

The student will
name different fiborous raw materials and unit processes
know the principles of dip, occ and chemical pulping process
name pulps

Assessment criteria - excellent (5) (Not in use, Look at the Assessment criteria above)

The student can
practice in DIP- and OCC-pulping plant and chemical pulp mill,
analyze different process paramters of pulping and quality parameters of pulps,
choose pulps for different end use applications
write the correct reports,
have co-operational skills