Session 1: GENDER AND SEX WABA Self-study Session 1 module 1.
1. Introduction to Course12 Session 1
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Transcript of 1. Introduction to Course12 Session 1
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8/13/2019 1. Introduction to Course12 Session 1
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UDELAR
School of EngineeringDepartment of Forest Products Technology
University of the Republic
School of Engineering
Pulp Mill Fiber Line Processes
Olavi Pikka, LicTech
1st - 12th October, 2012
Department of Forest Products Technology
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UDELAR
School of EngineeringDepartment of Forest Products Technology
Pulp Mill Fiber Line ProcessesOlavi Pikka
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Pulp Mill Fiber Line Processes
Lecture 1: Introduction to the
course
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UDELAR
School of EngineeringDepartment of Forest Products Technology
Pulp Mill Fiber Line ProcessesOlavi Pikka
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Lecturers Personal Data
Olavi Pikka, born 1950
Studies at Helsinki University of Technology (Pulp & PaperTechnology), MSc 1974, LicTech 1979.
Working career: HUT 1975 - 1979
Rauma-Repola Pori Works 1980 - 1986
Ahlstrm Machinery 1986 - 2000
Andritz-Ahlstrm 2000 2002 Andritz Oy 2002
Since August 2010 in Brazil Curitiba
Technology Director Fiber Line
E-mail: [email protected]
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UDELAR
School of EngineeringDepartment of Forest Products Technology
Pulp Mill Fiber Line ProcessesOlavi Pikka
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Course Structure and Schedule
Main schedule and time table
Topics of the course
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UDELAR
School of EngineeringDepartment of Forest Products Technology
Pulp Mill Fiber Line ProcessesOlavi Pikka
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Main schedule
Topic Hours Date
1. Introduction to kraft pulping and pulp mill fiberline 3 h 1.10
2. Fiberline unit processes
2.1 Woodyard/chip preparation 3 h 2.10
2.2 Cooking processes 6 h 3-4.10
2.3 Pulp Washing and screening 6 h 5-8.10
2.4 Oxygen delignification 3 h 9.10
2.5 Pulp bleaching 6 h 10-11.10
2.6 Post-screening, drying and baling 1 h 12.10.
3. Course wrap up 2 h 12.10.
30 h
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UDELAR
School of EngineeringDepartment of Forest Products Technology
Pulp Mill Fiber Line ProcessesOlavi Pikka
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Lecture hours
Monday to Friday
18:30 21:30
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UDELAR
School of EngineeringDepartment of Forest Products Technology
Pulp Mill Fiber Line ProcessesOlavi Pikka
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1. Introduction to kraft pulping and the pulp mill
fiberline
1. Purpose and targets of pulping processes
From wood to bleached pulp fibers to be used for
various end products
Emphasis on kraft pulping; also other pulping
processes mentioned (chemical and mechanical)
2. Kraft pulp mill Overview: fiberline and recovery
Main unit processes of fiberline
Main unit processes of recovery (briefly)
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UDELAR
School of EngineeringDepartment of Forest Products Technology
Pulp Mill Fiber Line ProcessesOlavi Pikka
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Pulp Mill
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UDELAR
School of EngineeringDepartment of Forest Products Technology
Pulp Mill Fiber Line ProcessesOlavi Pikka
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2.1 Woodyard/Chip preparation
1. Purpose and targets of chip preparation
Required chip characteristics
2. Woodyard operations
Overview
Unit operations
Debarking
Chipping
Chip screening
Storage and transportation
Bark handling
3. Specific features of plantation eucalyptusfrom the woodyard point of view (Fray
Bentos woodyard as an example)
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UDELAR
School of EngineeringDepartment of Forest Products Technology
Pulp Mill Fiber Line ProcessesOlavi Pikka-10-
2.2 Cooking process
1. Purpose and targets of cooking
2. Main terminology
3. Sulfate/kraft cooking chemistry
Main reactions for bleachable sulfate pulp
Reaction/process conditions
Reaction pseudo-kinetics/H-factor
Target level of delignification/yield
4. Strength delivery; fiber effects
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UDELAR
School of EngineeringDepartment of Forest Products Technology
Pulp Mill Fiber Line ProcessesOlavi Pikka-11-
2.2 Cooking process (continued)
Unit operations of cooking
1. Steaming of chips and air removal
2. Cooking liquor impregnation of chips (penetrationand diffusion)
3. Chip bed operations
Fluid dynamics/chip bed packing
Displacement in the chip bed
Heat transfer operations
Mass transfer operations/digester washing
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UDELAR
School of EngineeringDepartment of Forest Products Technology
Pulp Mill Fiber Line ProcessesOlavi Pikka-12-
2.2 Cooking process (cont.)
1. Industrial cooking processes
Continuous cooking
Batch cooking Modified cooking processes
Cooking additives (PS, AQ)
2. Specific features of eucalyptus cooking
3. Fray Bentos cooking process as an
example of modern industrial cooking
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UDELAR
School of EngineeringDepartment of Forest Products Technology
Pulp Mill Fiber Line ProcessesOlavi Pikka-13-
2.3 Pulp washing and screening
1. Purpose of pulp washing
2. Terminology of pulp washing
3. Washing calculations Mass balances and washing efficiency calculations
4. Industrial pulp washing practices
Washing equipment
Washing systems/Fray Bentos as an example
5. Purpose of pulp screening
6. Theoretical aspects and terminology of screening
7. Screening equipment and screening systems;location in the process
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UDELAR
School of EngineeringDepartment of Forest Products Technology
Pulp Mill Fiber Line ProcessesOlavi Pikka-14-
2.4 Oxygen delignification
1. Purpose of oxygen delignification
2. Oxygen delignification reactions
3. Oxygen deliginfication parameters
4. The performance of oxygen delignification
Delignification
Pulp yield and strength
5. Industrial oxygen delignification practices
One and two-stage systems
Fray Bentos as an example
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UDELAR
School of EngineeringDepartment of Forest Products Technology
Pulp Mill Fiber Line ProcessesOlavi Pikka-15-
2.5 Pulp bleaching
1. Introduction to bleaching:
Targets of bleaching
Principle of multistage bleaching/bleaching sequence
Roles of different bleaching chemicals and stages
2. Delignifying in bleaching:
Targets and purposes
Chlorine dioxide (reactions, process parameters,
performance)
Ozone and peroxide (reactions, process parameters,
performance)
Alkaline extraction (EO, EOP) (reactions, processparameters, performance)
Hexenuronic acid removal (main aspects especially
from euca point of view, A-stage process)
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UDELAR
School of EngineeringDepartment of Forest Products Technology
Pulp Mill Fiber Line ProcessesOlavi Pikka-16-
2.5 Pulp bleaching (cont.)
1. Brightening in bleaching:
Targets
Chlorine dioxide brightnening (reactions, process
parameters, performance)
Peroxide bleaching (reactions, process parameters,
performance)
2. Other bleaching chemicals (briefly)
3. Industrial bleaching
Typical bleaching sequences (euca in particular)
Bleach plant connections (washing, water
circulations) Bleaching effluents
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UDELAR
School of EngineeringDepartment of Forest Products Technology
Pulp Mill Fiber Line ProcessesOlavi Pikka-17-
2.6 Pulp drying and baling
1. Pulp drying and finishing department
Purposes and main unit processes and operations
2. Post-screening Why, what to remove?
Centricleaning, reverse centricleaning
3. Pulp drying machine
Principles
White water system
Machinery
4. Baling
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UDELAR
School of EngineeringDepartment of Forest Products Technology
Pulp Mill Fiber Line ProcessesOlavi Pikka-18-
3. Wrap up
Summary of the course
Highlighting the most essential aspects Questions from you?