0,09

0,881,22

0,380,08

9,40

7,05

3,29

0,85

0,26

0,00

5,00

10,00

Iron (Fe) Silicate (Si) Aluminium (Al) Sulphur (S) Copper (Cu)

REF Conventional PCC Paper

In-Line PCC paper

Wetend TrumpJet Flash Mixing technology enableswide product portfolio and platform for next genera-tion paper and board and tissue and non-woven pro-duction lines. Wetend has developed consistently corebusiness to flash mix effectively additives into the pro-cess. Improved mixing reveals repeatedly new oppor-tunities and applications to work with. The outcomewithout exceptions support the work of our clients tointroduce new or improved bio based forest productsto consumers and industries.

Consistent work together with customers andresearch organizations has resulted into several inno-vations that support the objectives. These are e.g.Micro Bubbled Foam Generation technology for foamforming process (for board, paper, tissue and non-woven products);mixing technology for extra-long biobased or synthetic fibers; the unique and novel mixingtechnology for nano and micro fibers and also In-LinePCC reactor and process to produce calcium carbon-ate crystals loaded on fibers. Four installations havebeen supplied for In-Line PCC filler production. Thedeveloped technologies can be also applied effec-tively to other industries e.g. for water treatment pro-cesses of mining industry.

While the new technology shapes processes andindustry, also our company faces changes and newchallenges. Mr. Pekka Kotila and Mr. Jouni Matulaestablished the company at 2001. Mr. Kotila is one ofthe skillful pioneers of the business and he owns morethan 50 years' valuable experience and knowledge inthe industry. His retirement took place early 2017. Toreplace Pekka’s valued input Wetend ownership andboard of directors has been updated to support the fur-ther growth, launch of new technologies and successof the company globally. Company is also looking for-ward to accept possible funding investments with newshareholders.

Jouni MatulaCEO

Development and change in Wetend corporateownership

Exceptionally fast flash injection mixing of wet end additives ques-tions old practices and opens possibilities to develop cost efficiencyand sheet characteristics. Chaos type of immediate flash mixing ofadditives into stock flow of board, paper, tissue or non-woven lineenables exploiting the additive efficiency with a maximal manner.

The technology makes it possible to mix a wide range of reactive addi-tive and chemical component pairs efficiently. As an example, mixing ofstrength starch and retention aid polymer simultaneously shows re-markable improvements.

Premixing and practically simultaneous injection of starch and cationicretention aid polymer into stock flow increases reactivity of the addi-tives. The same sheet strength and retention level can be achieved withmuch smaller chemical dosages. Typically much lower use of floccula-tion additives results to better sheet formation. The both chemicals aremixed just prior to the headbox. Fast response time speeds up gradechanges.

FOR PAPER AND BOARD MANUFACTURERS AND ASSOCIATED ORGANIZATIONS

WETENDNEWSTrumpJet Flash Mixing Reactor challenges old practices

®

Simultaneous mixing of starch and polymer brings significant cost savings

1/2017ISSUEENGLISH

Jussi Matula (left), Jouni Matula and Pekka Kotila shaking

hands for future challenges.

Elemental EDS analysis of burned paper ash samples showed signifi-cant differences between the two samples. In-Line PCC paper ash con-tains much higher amounts of different metals. Especially very high ad-hesion of iron to In-Line PCC crystals causes the change in ash color.

All these dissolved process water compounds together with colloidaland fine particle material are attached to paper web resulting in cleanerwater circulation with better machine runnability and longer life time ofmachine fabrics due to extremely the high filler retention. The total sav-ing of retention chemicals in this mill case is 87 %.

In-Line PCC with TrumpJet Flash Mixing technologycleans up process waters

™

With With TrumpJet Flash Mixing technology, gaseous carbon diox-ide and milk of lime slurry are dissolved instantly into process water,resulting in extremely fast PCC crystallization onto stock particles.PCC crystallization is completed in vertical flow through pipe reactorwithin one second.

Recent results from medium size fine paper machine in Europe produc-ing high quality special grades, have proved that high speed PCC crystal-lization reaction binds effectively fine particles as well as dissolved andcolloidal material from process water.

This material is fixed to paper web resulting in cleaner process with ex-cellent runnability and high optical paper qualities. The comparison be-tween satellite unit produced conventional scalenohedral PCC and In-Line PCC show that in laboratory burned paper ash color of In-Line PCCis brown compared to paper of conventional standard PCC. Despite thebrown color of paper ash with In-Line PCC the whiteness and opticalproperties of paper sheet remain same compared to paper with conven-tional PCC.

MILL CASESFine paper line A, Europe

Large Fine paper line B, Europe

Cationic polymer (CPAM) and bentonite were added practically simulta-neously just one after the other before headbox. Starch and ASA wereflash mixed simultaneously before retention aid flash mixing stations.Before, starch and ASA were added to thick stock and CPAM before thescreen and bentonite immediately after the screen

Results:Good sheet quality, good runnabilityCPAM saving at first 60%, later CPAM line was closed, saving 100%ASA saving 15%Starch saving 15%Additional conclusion: Once strength starch is brought to close reach

of headbox, starch also operates as retention aid and replaces themore expensive CPAM completely.

Strength starch and cationic polymer are premixed and injected simul-taneously. Bentonite and micropolymer are premixed in a separate mix-ing station close by. The cationic and anionic mixing stations are lo-cated close to headbox feed manifold.

Results:Starch saving 47%CPAM saving 10...15%Micropolymer saving 23%Fresh water usage eliminated in the application

The fast flash mixing reactor opens the opportunity to bring new andconventional wet end additives close to headbox and forming section.This makes the system fast, responsive and efficient, chemical savingrate is high and influence to cut operational costs and improve profits isconsiderable and significant improvement in sustainability

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Shaping technology tospeed up bio-basedbusiness of clients

Carbon (C)

.

and oxygen (O), Ca, Cl,F, Mg and Na excluded from

results

Weig

ht

% t

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NewsfromCEO’s

desk

CATIONICCHEMICALS

ANIONICCHEMICALS

TrumpJet Flash Mixing Reactor with two mixing stations (for2...5 different additives) in tandem position. Simultaneousmixing of strength starch and cationic retention aid brings thebiggest savings.

In-Line PCC filler-fiber composite hasstrong mechanical bonding of fibers and fibrils.Average PCC crystal size is very small, 0.8 µm

Reduction rate of dissolved metals in process water (%)

Relative amount of different elements in paper ash: In-Line PCCcompared to standard scalenohedral PCC. In-Line PCC binds metalsfrom process water resulting in cleaner process and maintaining high

paper quality.

In-Line PCC Paper

REF PCC PaperConventional

Welcome to meet us inexhibitions and seminarsaround the world

Copyright

Wetend Technologies Ltd 2017

Wetend Technologies Ltd.Kaartilantie 757230 SavonlinnaTel. +358 10 836 0100

Chief Editor

Teija Pesonen

www.wetend.com

TrumpJet Injection Pump bySulzer and Wetend has anew motor from ABBWetend and Sulzer Pumps Finland have developed anew centrifugal pump for TrumpJet injection stockpumping applications. The latest pump update assem-bly has integrated ABB synchronous reluctance motorwith a frequency controller.

Normal centrifugal pumps easily generate fiber-spindeposits. The unique patented impeller and TIP pumpcase design can treat normal and extra-long fibers with-out generating spins and lumps. The pump interior partsare designed to stay clean in all normal conditions. Thepump is very light and can easily be located on top of acolumn next to process pipe. This minimizes connectingpipe lines and then secures maximum cleaniness also inpiping.

Wetend has supplied already more than 70 TIP pumps tovarious TrumpJet applications.

In 2017 Wetend Technologies will be present in:

Tappi PaperCon 2017,

China International Paper Technology Exhibition(CIPTE) September 13–15,

Meet our experts also at:

April 23–26, Minneapolis,Minnesota, USA. During the exhibition you can find us atbooth 414.In addition to the expo, Wetend will be presenting itsnewest technologies in two presentations.

Tue 25th At 3:30–5:00 pm Dosing of Wet EndAdditives in premixed pairs and Groups in FlashMixing Reactor Challenges Old Rules with GreatEconomical Benefits", Jouni MatulaWed 26th at 8:00–10:00 am "Fast Flash Mixing inGeneration of Micro Air Bubbles for Foam an ProcessDynamics in foam forming”, Jussi Matula

, Shenzhen, China. Welcometo meet our experts at booth A3507.

ZellCheming, July4–6,2017,Frankfurt,Germany+more events to be announced later

Look forward to meeting you!

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A fine paper line 230 000 tons/a in North America installed a singleTrumpJet Flash Mixing station on a headbox feed pipe on a pipesection between screen and the headbox feed manifold. Thedistance to the slice opening is only three (3) seconds as an average.This time is needed in practice to prepare the fiber furnish andchemicals for initial sheet formation process when the mixing iscompleted in a flash, practically initial mixing time is less than one(1) second only.

After the installation

Older injection system was removed from the line and at the momentTrumpJet mixing station mixes retention aid polymer and silica-nanoparticle simultaneously into the stock flow.

Polymer consumption dropped approximately 40%Nanoparticle approximately 60% still with a bit higher retentionStarch volume of ASA sizing emulsion came down by 15%Fresh wateruse forpostchemicaldilutionwascompletelyeliminatedSheet formation improved greatlyResponse of the process to the TrumpJet flash mixing was immedi-ate and after the above adjustments process stabilized withexpected results

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Great results with a single TrumpJet station1

Sun Paper, one of the leading paper and board makers in China,successfully started up its two new testliner paperboard machineswith an annual capacity of 800,000 metric tons at Zoucheng inChina. The whole investment included two new production linesPM31 and PM32.

New Sun Paper testliner machines in China collectsavings and efficiency with Flash Mixing of additives

The PM31 is equipped with three ply former. The design speed is1200m/min, basic weight 110-250g/m . The main product isLinerboard. PM32 is equipped with a two layer headbox The productionis mainly corrugated medium and kraftliner - the range of 90-140g/m .The design speed is also 1200m/min.

With support from Wetend and other suppliers the project enables SunPaper to achieve high production efficiency, significant cost savings.Wetend Technologies Ltd supplied total the (10) TrumpJet stationsinstalled for the both production lines. Main goal of the mill to exploitTrumpJet Flash Mixing Reactor Technology was to cut down chemicalcost and improve sustainability in savings of water, energy and thechemicals.

Water saving through TrumpJet systems is minimum 1 m /ton per line.Water and energy saving in a project like this makes investment forTrumpJet Flash Mixing Reactor systems alone already profitable.Significant chemical savings are a great bonus for everything.

2

2

3

Wetend Technologies Ltd. has purchased Anti-scaling technology with product ownership andknowhow from Ceresto Ltd – a technology companyin Finland.

The acquired technology is used to prevent calciumcarbonate scaling of In-Line PCC Reactor as well as forseveral other types of scaling deposits generated onthe inner wall of a process pipe, caused by aggres-sively reacting or chemicals.

The system can be used for many scaling sensitive ad-ditives to safe guard cleanliness, runnability and effi-ciency. Ceresto has been one of the few developersand suppliers of a full scale In-Line Reactor anti-scaling system for paper/board and process industry.The newly signed contract includes also laboratoryand pilot testing equipment and gives opportunity torun trials at paper/board mill in relevant process con-ditions.

The agreement secures the availability of anti-scalingtechnology for customers of Wetend in the future andunites knowledge and expertise of the companies forlong term customer support.

The technology is already in use in commercial In-LinePCC installations with excellent results.™

Wetend acquires Anti-scaling technology

TrumpJet Flash mixing technology of enables wide productportfolio and platform for next generation paper, board, tissue andnon-woven production lines. Wetend has developed consistently itscore business to flash mix effectively additives into the process.Improved mixing reveals repeatedly new opportunities and applica-tions to work with. The outcome without exceptions support the workof our clients to introduce new or improved bio based forest productsto consumers and industries.

Flash Mixing Reactor for MicroBubbled Foam Generation forfoam forming process for board,paper, tissue and non-wovenproducts.

Flash Mixing Reactor for Paperand Board Composite Structures; Extra long bio based or syntheticfibers.

Wetend has developed aTrumpJet mixing method togenerate micro gas bubbles from airor gas and inject the gas flow intohigh volume liquid process flow. Theprocess generates billions of microgas bubbles in size 20…50 µm.Foam based production can giveexcellent formation, bulk and workswell with extra long fibers.

The new Wetend-Sulzer TIP injection pump innovation makes it

Wetend possible to fluidize and mix long bio based or synthetic fibers very closeto paper/board machine headbox or a non-woven production line. Thesystem opens opportunity to develop and generate new compositestructures for board or paper and non-woven products.

The developed Injection technologyenables fluidizing nano and micropulp and efficiently mix it very closeto paper/board machine headboxand guiding 90% of the flow directlyto web formed by the process. MFCor NFC pulp is exploited to developnew and better quality characteris-tics for the paperboard end product.

Core ofthe process is In-Line PCC FlashMixing Reactor for very fast mixing ofCO gas and milk of lime slurrystraight into thin stock in PM/BMapproach flow. The stable andcontrolled reaction producescalcium carbonate crystals loaded

on fibers. Four installations have been supplied for In-Line PCC fillerproduction.

Flash Mixing Reactor for Paper and Board Composite Structures;Nano and micro fibers/pulp.

Flash Mixing Reactor for Paperand Board In-Line PCC .™

2

Wetend investments support development of newbiobased forest products

Simple is beautiful

Above: Happy Ms.Zhang Min, (GeneralManager of WetendTech. operations in

China) after successfulstart-up at the mill.

Left: TrumpJet FlashMixing Reactor

installation for polymerand bentonite.

PM 31 and 32 side by side: Two new testliner paperboardmachines of Sun Paper Zoucheng site.

TrumpJet®

FLASH MIXINGTECHNOLOGY

Enabling wide productportfolio and

PLATFORM FOR NEXTGENERATION PAPER AND

BOARD MACHINE

Flash MixingChemical Reactor

for processchemicals

Fluidizingand mixing of

ultralong fibers,non-woven

etc.

In-line PCC forfiller-fibril-fiber

composites

Fluidizing & mixingof nano and micro

fibers/cellulose(NFC/MFC)

Microbubblefoam generationfor foam forming

CompactTrumpJet injection

pump (TIP) withABB high output

SynRM motor-drivepackage is easy-to-maintain.

Traditionally wet end additives are dosed and mixed invarious stages and locations. Usually the delaytimesbetween the locations are long. The process is consid-ered complicated and difficult to manage and follow.This is how the mixing was done also in the first year ofWetend 15 years ago. That was the way it was alwaysdone!

The experience and research work started to teachand educate Wetend staff and conscious results ori-ented customers. Gradually mixing point was movedcloser and closer to headbox and forming. Additive con-sumption went down and savings increased, moreadditives were brought to flash mixing zone – the lat-est: strength starch. The results excited, sometimeseven surprised and have always led to new develop-ments and even better results.

Once the TrumpJet technology development originallywas started, the target was to reduce retention aidpolymer consumption, improve sheet quality and elim-inate totally use of fresh water in the application. Thetask was successful.

Wetend is today 15 years old company. Applicationshave expanded. Close to 500 TrumpJet systems havebeen supplied. There are more than hundred interna-tional patents supporting new developed technolo-gies.

Wetend is one of the first Cleantech companies inFinland and probably in the world too. The core innova-tion for the TrumpJet technology was developed inSavonlinna Finland starting year 1997 in a major tech-nology project initiated by Ahlstrom Machinery andUniversity of Lappeenranta. The name Cleantech wasdeveloped and given to the project – describing pro-ject objectives – and in practice Wetend TechnologiesLtd is a spin-off company from the project. The ownersof the company acquired at 2001 their early patentsfrom the Cleantech project and established the com-pany.

Recently Wetend joined the nationalmarketing organization to promote sustain-

able values. www.cleantechfinland.com

Jouni MatulaCEO

Cleantech

Finland

Valmet Technologies Inc and Wetend Technologies Ltd have enteredinto a partnership agreement. Valmet will exploit novel TrumpJetFlash Mixing technology in delivery projects for new and modernizedpaper and board making lines.

Petri Paukkunen, from Valmet states: We wantto bring to our customers world class mixing technology and also newfuture solutions.

We trust and count on strengthof R&D work and pilot plants of our own and our associates, especiallywhen they are closely used by Valmet and our partners.

For us the co-operation with Valmet has opened a new marketingchannel and technology development field, says the CEO Jouni Matulafrom Wetend Technologies. We can introduce new radical developed

VP, Sales and Marketing

We want that in the future there are new innovationsfor the wet end part of paper and board machines and products that willrevolutionize concepts and applications.

FOR PAPER AND BOARD MANUFACTURERS AND ASSOCIATED ORGANIZATIONS

WETENDNEWSPartnership of Valmet and Wetend creates newvalue for Customers

1/2016ISSUEENGLISH

Picture: Alhstrom magazine ”Me kaikki” 4/1997 inwhich JouniMatula and Jutta Nuortila-Jokinen descripe the Cleantech

project.

Coated fine paper production line in USA gains savingswith TrumpJet Flash Mixing Reactor technology

®

A novel reactor innovation of Wetend reactor mixing process withfast chaos mixing pattern applied to a headbox feed pipe surprisin-gly enables mixing various additives practically simulta-neously into the process flow. Traditionally anionic and cationic re-tention aid additives and e.g. strength starch are mixed in a long dis-tance from thick stock chest to headbox screen area.

––

In TrumpJet Flash Mixing Reactor mixing takes place simultaneouslywithin a second in chaos type of mixing process very close to headboxand forming part of paper or board machine.

A fine paper mill in USA, producing coated printing paper, installed theabove described process to the production line. Before strength starchand PAC fixing agent were added to thick stock line of the process, silicawas after the machine screen. After the TrumpJet installation, PAC ismixed before the screen, starch and anionic silica are mixed

accordingto the patented Flash Mixing Reactor concept .

Saving of PAC 25%Saving of Cationic Starch for strenght 10…30%, in average 25%Saving of Anionic Nanoparticle (Silica) 48%Good formationGood retention levels and system runnability

Based on the savings Wetend was awarded with an extra performancebonus by the satisfied customer

effectively,

very closeto each other in two close by, but in separate mixing stations

Results

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TrumpJet Flash Mixing Reactor installation and results of a coated finepaper production line

TrumpJet Mixing stationsA, B and C

+Good sheet strenght+Improved dewatering

+Lower steam consumption+Use of fresh water eliminated

C

BA

InjectionPump

technologies to our customers a wider and more efficientmanner. Although Wetend has systematically conducted research anddevelopment work with the paper and board making cluster and withleading paper and board making companies, partnership with Valmetopens new window and platform for innovative development work.

globally in

Foam forming and foam generationtechnology

First commercial test productionplant in operation

“Valmet, Wetend, Sulzer Pumps and VTT work together todevelop a foam forming process for board and paper produc-tion. The first commercial test production plant has beensupplied. In addition, Wetend has supplied five pilot machinefoam generation plants. Numerous pilot production testssupport the development.

Micro gas bubbles are needed for foam generation but also formixing of gases like carbon dioxide (CO ) for In-Line PCC produc-tion or oxygen (O ) for white liquor oxidation. Shear forces inTrumpJet Forte G gas mixer cut and disperse the high volume gasflow in a flash into tiny gas bubbles. Hundreds of billions of tinybubbles from <10 µm to 100 µm in size are generated andmixed evenly into process flow to headbox. The foam mixturelooks like milk.

Foam generation and forming in controlled conditions gives excel-lent formation and new sheet characters including e.g. potentialto increase bulk.

2

2

– –

Station C: PACChemical saving 25%

Station A: SilicaChemical saving 48%

Station B: StarchChemical saving 25%

Petri Paukkunen, V.P. Sales and Marketing at Valmet Technologies (left)and Jouni Matula, CEO, Wetend Technologies Ltd, following test runs at

Valmet Rautpohja pilot plant.

Wetend provides trueCleantech technology–15yearsandmoving forward

NewsfromCEO’s

desk

Phot

o: L

eif L

indb

erg

Welcome to meet us inexhibitions and seminarsaround the world

TrumpJet mixers at Stora Enso Varkaus go forcontainerboard productionStora Enso Varkaus Mill in Finland is stepping into a new, dynamicera with the conversion of paper machine to produce containerboard. TrumpJet Mixers are staying onboard.

Varkaus in Finland is a town with a long industrial history. The areareceived from Stora Enso a significant investments to Varkaus Mill.During 2015, Stora Enso's Varkaus Mill converted its fine papermachine to produce high quality virgin-fibre-based containerboard -kraftliner. Varkaus was an ideal mill for this kind of conversion. It had anintegrated pulp mill, a power plant and a suitable paper machine. Inaddition, the mill is well located from a raw material supply point of viewand it had the necessary infrastructure and competence to run theproject successfully.

In the conversion, Varkaus mill will focus on products where strength,moisture resistance, purity and printability are important to thepackaging solution. These end uses include, for example, fruit,vegetables and food packaging, retail and industrial heavy duty.

Copyright

Wetend Technologies Ltd 2016

Wetend Technologies Ltd.Kaartilantie 757230 SavonlinnaTel. +358 10 836 0100

Chief Editor

Teija Pesonen

www.wetend.com

Flash Mixing Reactor tech-nology awarded in Franceby ATIP

Wetend Technologies Ltd was awarded with a silvermedal 'Palme d'Argent' in an innovation competi-tion of its new Flash Mixing Reactor Technology. Theaward was given by the French Paper IndustryTechnical Association (ATIP). Innovation Contest wasorganized in conjunction with the annual ATIPConference and Exhibition in Grenoble, France onNovember 24 26, 2015.

Core of the awarded technology:

– –

–

Fast TrumpJet FlashMixing Reactor with chaos-type-of-mixing phenomena.Result is a new revolutionary process to mix chemicalsinto the process. Chemical savings are surprisingly large.Cost savings can be 1 Million Euro per a single productionline.

Technology enables also generating composite-type ofpaper or board structure. Also new type of fiber-basedmaterials can be efficiently mixed close to headbox –such like synthetic long fibers, micro- and nanofibers andreactive additives. TrumpJet Flash Mixing Reactors arealready in commercial operation at several papermills.

®

The ATIP Innovation Award rewards innovative technolo-gies and solutions for pulp and paper industry. Theawards are highly regarded among the European pulpand paper industry.

In 2016 Wetend Technologies will be present in:

Tappi PaperCon 2016,

International Wood Biorefining Week (IWB) 2016

Meet our experts also at:

May 15 18 in Cincinnati OH,USA. During the exhibition you can find us at booth 607.In addition to the expo, Wetend will be presenting itsnewest technologies in two presentations on Wednesday18th.

At 8 10:00 "Eye Opening Operating Results of FlashMixing Reactor for Efficient Use of Wet EndAdditives”, Jussi MatulaAt 10:30 12:00 "Non-Spinning, Fluidizing FlashMixing Reactor for Synthetic Fibers, Nano- and MicroFibers and Agressive Chemicals for Board, Paper andTissue Production", Jouni Matula

, May24 26 May 2016 in Stockholm, Sweden. You can find usat Bioeconomy Innovation Forum -area.

Paper&Biorefinery Conference, 11 12 May, Graz,AustriaZellCheming, 28 30June, 2016, Frankfurt, GermanyPTS Paper & Board Symposium, 6 7 September,Münich, GermanyCIPTE 2016, October 11 13, Shanghai, ChinaPapFor 2016, 25 28 October in Saint Petersburg,Russia etc.

Look forward to meeting you!

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“More with less” is a common result with TrumpJet systems suppliedby Wetend. This is a given fact when the new reactor technology isapplied very close to headbox.

Micro and nano fibers:

Fluidizing effect is strongly developed at very short period shear area ofa TrumpJet mixer unit. That is due to the high flow volume and highspeed of injection liquid and high shear. Additive is precipitatedinstantly in filaments, ligaments and finally into drops and dropletsinside the fast moving injection stream and mixed in a flash into themain process flow.

The effect is exploited also for a liquid gel e.g.made from either micro fibrillated cellulose (MFC) or nano fibrillated cel-

low viscose liquid. The fluidizing enables mixing of the MFC or NFC mate-rial effectively into stock. This is preferably made just before headboxtogether with wet end chemicals to bring most of the material into theformation zone. This way the material loss is minimized. MFC and NFCmaterials can provide new sheet composite characteristics.

The first commercial production plant is already in production use.

More with Less

TrumpJet Flash Mixing System for MFC and NFC®

Gel type of MFC or NFC is fluidized and mixed effectivelyand finally formed to a composite board or paper production.

In-Line PCC™ Reactor was installed already in 2009 at SC-paperproduction line (750 tons/day) in Finland to produce precipitatedcalcium carbonate (PCC) loaded directly into fiber generatingfiller–fiber composite. The investment was completed after thoroughmill trials. Results exceeded the originally set objectives andprofitability target of the total capital investment. Recently the wellrunning system has been relocated to a bigger SC paper productionline of 1000 tons/day due to production rearrangements of the mill.

Profitability of the In-Line PCC is excellent. It is a cost effective new rawmaterial generating composite structures with fibers. The cost savingsare maximized by combining In-Line PCC and TrumpJet Flash Mixingtechnologies for wet end additives like strength starch, strength agents,sizing and retention aids additives.

™

In-Line PCC™ carbonation process integrated into PM/BM wet end andheadbox approach flow process is extremely fast. The average reactiontime in PCC crystallization is less than one second. In conventional on-site PCC production the carbonation process takes tens of minutes,even hours.

The key for high precipitation reaction speed is fast mass transfer ofreacting chemicals. This is achieved by TrumpJet Flash Mixingtechnology. Injection technology with counter rotating vortex pairs ofTrumpJet chemical mixers, gives flash, chaos kind of immediate andefficient mixing for CO gas and milk of lime slurry. The gas isprecipitated into tiny, fast dissolving micro bubbles together withprecipitated calcium hydroxide. The very high water volume ofpaper/board machine approach system stock flow enables rapid

®

®

2

dissolution of the reacting chemicals to water phase where instant PCCcrystallization process occurs.

The latest development result is patented innovation to add newadditives simultaneously into the carbonation process with milk of limeand carbon dioxide. The additive can be e.g. micro or nano fibrillatedcellulose that bring new strength and bulk/density characteristics toboard or paper.

The latest development results of In-Line PCC™

In-Line PCC process installed on line producing350 000 tons of SC paper annually

™

Today more than 50% of TrumpJet Flash Mixing systems go for boardproduction, applications are e.g. consumer products, food packagingand container boards.

In the Stora Enso Varkaus PM3 conversion project, the existingTrumpJet mixing stations of the fine paper line together with new mixerswere modernized to TrumpJet Flash Mixing Reactor system forlinerboard production. The new system flash mixes additives efficientlyprior to the headbox without any fresh water. Anionic and cationicchemicals are mixed into headbox feed stock very close to each otherfollowing the new chemical rector concept of Wetend. Consumption ofadditives is very low and process runnabilityis good.

Date

Conduct

ivity

[mS/c

m]

Wire pit

Machine chest

Clear filtrate

Cleaner 1st feed

Headbox

Improved net efficiency: In-Line PCC™ process binds colloidalsubstances decreasing conductivity in circulation waters. This leads tocleaner process and excellent runnability of the entire production line.

FLUIDIZING

FLUIDIZING MIXING FORMING END PRODUCT

END PRODUCT

TrumpJet Flash Mixing Reactor installedbefore attenuator tank of headbox.