1. Full scale trail with Nopcosperse ENA-2048 @ Stora Enso Skutskär

2. Agenda Nopcosperse ENA-2048 Facts about Skutskär
Fiber line 3 – birch line (HW)
Dosage of ENA-2048
Results
Acetone extract
Tall oil production
Betulin
Conclusions

3. Nopcosperse ENA-2048 New digester additive for deresination of hardwood
Nopcosperse ENA-2048 is highly effective synthetic digester additive that has been developed to replace rosin soap and tall oil in hardwood pulp production. ENA-2048 combines several mechanism to improve deresination: 1) It improves penetration of cooking liquor into the chips 2) It helps to disperse and solubilize extractives to increase their saponification 3) It stabilizes micelles in cooking liquor 4) It prevents adsorption of micelles onto the fibres during black liquor displacement and washing

4. New approach – increased tall oil production
One existing customer – SE Enocell
Produces viscose and has high demand of clean pulp. Has used the product for app. 3 years.
Several short full scale trials have proven the functionallity but it has been tough to get regular business
New excel calculation based on theoretical assumptions shows that econimical benifts is huge due to extra production of tall oil

5. Stora Enso Skutskär South of Gävle, 160 km north of Stockholm
Three fiber lines, two SW lines and one HW line with total annual production of ton pulp

6. Fiber line 3 – birch line (HW)
Continuous singel vessel digester
BSW – 1 filter and 3 presses
Bleaching sequence D0, EOP, D1, D2
Annual production ton

7. Dosage of ENA-2048
Lab and full scale trials have shown that 1 kg of ENA-2048 is at least as effective as 10 kg of tall oil / rosin soap
Recommended dosage of ENA-2048 is 2,0-2,5 kg/ton pulp
The product needs pre dilution with x 20 if dosed to white liquor. No dilution if dosed to black liquor
SE Skutskär uses 40 kg of tall oil per ton pulp and this was replaced with 2 kg ENA-2048

8. Dosage point of ENA-2048
To black liquor stream mixed with white liquor to C2 circulation

9. Results – aceton extractives
First trial 3rd to 11th of March
Second trial 24th of March to 3rd of May
SE Skutskärs limit for acetone extract is 0,2 %

10. Results – tall oil production
January 1638 ton
February 1451 ton
March 1832 ton
April 2062 ton

11. Betulin – problematic birch resin
In production of birch pulp you always have more or less betulin present depending on debarking
Betulin easily creates deposits and is very troublesome to get rid off with conventional dispersing agents
During reference period before trial betulin content in final pulp was roughly 120 mg/kg
During trial betulin decreased to a level of 60 mg/kg

12. Conclusions Potential is 280 ton ENA-2048 annualy
600 KEUR with GM 50%
Net profit for customer according to Nopco 2500 KEUR per year
Net profit according to customer 900 KEUR per year
May will be reference month but responsible engineer will recommend management to prolong the trial for at least three months starting latest middle of June