FENNOCLEAN RCF - REUSE OF STARCH IN RECYCLED FIBER

Mikko Virtanen, Sr. Research Scientist, R&D
Juha Rintala, Marketing manager, P&P EMEA
Jaakko Ekman, Sr. Research Scientist, R&D
Reetta Strengell, Director R&D
FiberTech 2016
Kemira R&D Innovations Pulp & Paper
Case FennoClean RCF
The first choice in chemistry
for water intensive industries
REVENUE
EUR 2.4 billion (2015)
(11% growth)
Expertise, application
know-how and
chemicals that improve
customers’ resource
efficiency and product
quality.
PULP & PAPER 60%
Leading global chemical supplier
#1-2 in all regions
EMPLOYEES
4,685 (2015)
OIL & MINING 15%
Growing chemical and service
provider
#2 in global polyacrylamide
production
INVESTING IN
GROWTH
MUNICIPAL & INDUSTRIAL 25%
Market leader in raw and waste
water treatment chemicals
#1 in Europe and North America
CAPEX & R&D:
EUR 340 million (2015)
Kemira shares are listed on the NASDAQ OMX Helsinki stock exchange.
M. Virtanen | FennoClean RCF FiberTech 2016
2
Kemira Pulp & Paper
R&D
Focus on:
• New strength and retention chemistries
• Next generation surface additives for
sizing, coating and barrier applications
• Novel solutions for microbe control and
spore control
• Unique control and monitoring tools
to support our business needs
INNOVATION RATE:
WE HAVE 187 PATENT FAMILIES
AND 600 PATENTS
Kemira Global R&D – a world class team
New product revenue
EUR
million
Employees & expertise
Product time-to-market
Months
75 employees
= Target
Oil and gas, minerals and mining
Polymer chemistries
Scale and corrosion control
Manufacturing process development
200
155 employees
Fiber and wet-end
Control and monitoring
Microbial control
Solid-liquid separation and sludge
dewatering
Chemicals for bioprocess
100
Radical
products
(-25%)
Incremental
products
(-50%)
20 employees
Fiber and wet-end
2010 2011 2012 2013 2014 2015
2013
2014
2015
M. Virtanen | FennoClean RCF FiberTech 2016
2016
4
KEMIRA FENNOCLEAN™ RCF
REUSING STARCH FROM RECYCLED FIBER
Current situation
With enzyme inhibitor
KEMIRA INNOVATION:
A special amylase enzyme inhibitor
prevents the enzymatic degradation of
starch polymers, and fine-tuned synthetic
polymer program ensures that this
secondary starch is retained within fibers.
Starch
Amylase
enzyme
Starch
Amylase
enzyme
Amylase is an enzyme produced by many bacteria and fungi. This enzyme breaks down starch
polymers into smaller sugars which can be seen as high COD values in process waters and
increased microbial activity due sugar nutrients.
KEMIRA FENNOCLEAN™ RCF
A CONCEPT FOR RECYCLED FIBER STARCH MANAGEMENT
Customer benefits:
Step 1:
– Starch stabilization by stopping enzymatic
degradation of starch
• FennoSpec enzyme inhibitor
• More efficient and sustainable raw
material usage due to improved yield of
starch and reduced need of added
starch
• Lower COD in waste water
Step 2:
– Retention and strength management concept to
retain starch and boost strength and productivity
• KemForm retention products
• FennoBond strength polymer
• Improved runnability due to stable wet
end chemistry
• Improved strength and productivity by
optimized retention, drainage and
strength system
KEMIRA FENNOCLEAN™ RCF
THE CHEMICAL INHIBITION OF AMYLASE ENZYME - FENNOSPEC 1200
700
Biocide will control the bacteria activity but
cannot inactivate the amylase enzyme. For
this inactivation, a special inhibitor chemical
is needed.
600
Starch, mg/l
Biocide alone cannot control amylase activity
enough to limit starch degradation in paper
making process.
500
400
300
200
100
0
1000 mg/l starch was added into a wire water sample and it was
treated with biocide (monochloramine 20 ppm) and with different
concentrations of amylase enzyme inhibitor -Fennospec 1200.
Starch concentration was measured after 2 h incubation at + 45 °C.
The higher the bar, less starch is degraded by amylase enzyme.
KEMIRA FENNOCLEAN™ RCF
BOOSTING STARCH RETENTION WITH KEMIRA POLYMERS
Testliner furnish, 5 % surface size starch
First pass retention test with DDA
Nonionic starch from recycled fiber
retains weakly by itself.
40%
Starch retention can be improved
with choosing the right KemForm
retention program or FennoBond
strength polymer.
Additional boost to productivity and
strength by optimizing retention and
strength system
Starch retention
35%
30%
25%
20%
15%
10%
5%
0%
No polymers
Conv. CPAM
FennoClean RCF FennoClean RCF
System 1
System 2
System 1: FennoBond polymer
System 2: PAC, FennoSil silica, FennoBond polymer
KEMIRA FENNOCLEAN™ RCF
MILL TRIAL
• Board mill using recycled fiber (RCF).
• RCF tower of a board mill was treated with FennoSpec 1200 enzyme inhibitor for
one day.
• KemForm retention system consisting of FennoSil (silica) + FennoPol (cPAM)
• Raw material was 100 % RCF during the trial.
• Main control parameter for the machine was internal bonding strength.
• Trial was followed by measuring soluble starch in RCF. In addition, machine data
from the mill was analyzed.
KEMIRA FENNOCLEAN™ RCF
MILL TRIAL - RESULTS
More starch
measured in RCF
pulp – amylase
activity under
control!
Overall starch
dosage was reduced
by over 50%!!
Strength values
above target –
even though the
reduced starch
dosages!!
Refiner energy load
reduced over 30%!!
Target
strength
KEMIRA FENNOCLEAN™ RCF
MILL TRIAL – CUSTOMER BENEFITS
We can clearly state that since inhibition of amylase enzyme, the recycled starch from
broke and RCF pulp was reused for improving board strenght properties!
• Same strength was obtained with clearly less added starch
– 16 kg/t starch saving
• Refining energy consumption was reduced
– 6 kWh/t saving
• Machine runnability was good
• KemForm retention system was efficient for capturing the increased amount of
recycled starch
KEMIRA FENNOCLEAN™ RCF
SUMMARY
• Kemira has developed a new, sustainable and innovative way to
reuse starch originating from recycled fiber in board production
• Patent pending technology
• Starch degradation is significantly decreased using enzyme inhibitor
• Improved retention system to increase recycled starch retention
• Values for board manufacturer:
o
More efficient and sustainable raw material usage due to improved yield of starch and
reduced need of added starch
o
Lower COD in waste water
o
Improved runnability due to stable wet end chemistry
o
Improved strength and productivity by optimized retention, drainage and strength
system