Valmet Paper Machine, 7270mm 250.000 tpy
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- Product ID: VAK10363
- Name: Valmet Paper Machine, 7270mm 250.000 tpy
COATER AND CALANDER ARE NOT INCLUDED !! BASIC DATA
Capacity 250.000 tons / a
Trimmed width 7270 mm
Speed 1330 m/min
LWC offset 60- 80 gsm ( 90 gsm ), average 68 gsm
Cote , Cote Silk, Ultra, Ultra Silk grades
Furnish
Chemical pulp 26 – 34 %, CSF 620 ml
PGW mechanical pulp , CSF 60 ml ( PGW70 )
ash content 8 – 12 % in basepaper
Fillertalc, F15
SHORT CIRCULATION
Centri cleaners (1988 )
Ahlström 6 stages centri cleaners, Twincleaner 133, 1.stage feed 1650 l/s
5 th and 6 th stage has Andritz Vortex nozzles for reject dilution
Atrex dispergator ( CD 700 ) for 6th stage reject handling
50 – 100 % is feeded back to 3rd stage
Base paper ash content limits reuse of 6th stage reject 60 – 65 gsm
Machine screening
Two Jylhävaara's JS400 (1988 ) primary screens, hole dia 1,6 mm, 1650 l/s
One Metso's TAS 340 ( 1995 ) secondary screen, slot 0,2 mm,
reject is handled in a broke system
Retention aid is infed after screens with trump jet ( 4 nozzles )
Deculator
Clark & Vicario 1968
White water saveall, disk filter ( 2002 )
Supplied by GL&V, type VDF 5,2 x 9/14 – 325
14 disc , dia 5,2 m
RETENTION AID PREPARATION AND SCREENING
Bentonite ( all PM's )
Silo 50 m³ or 500 kg bag system
slurry preparation is supplid by Allied Colloids, continuos process
5 m³ storage tank
Bentonite is filtered with two automatic changed slot screens supplied by Allied Colloids
Retention aid , PAM
PM has it's own slurry making device supplied by Allied Colloids
retention aid is delivered in 500 kg bags
3 m³ dissolving tank
5 m³ storage tank
Two automatic slot screens supplied by Allied colloids
Trump jet infeed system with 4 nozzles
ALUM DISSOLVING UNIT
Silo 68 m³ or 500 kg bag
Screw conveyors
3 m³ mixer , batch process
2 x 12 m³ storage tanks
Supplied by JylhäRaisio ( Metso )
MACHINERY
Vacuum pumps, NASH
904 –T2 400 kW 1987 2 pcs
CL 9001 G 1967 1 pc
CL 9002 G 1967 5 pcs
Individual drives for pumps
On-line measurements
Cathionic demand, Metso' s CATi for PGW and white water
Retention control, Metso's RMi for white water and headbox
Air measurement Savcor's Conrex for bubble air
Consistency
Metso's MCA for PGW, Pulp, machine stock
Flow meters
Fisher Porter, ABB, Krohne
PRODUCTION TECHNOLOGY
Basepaper machine ( start up 1968 )
Bottom fabric width 8050 mm
Sym-flo headbox ( 1987 )
Sym-former R ( 1984 ) , modernised four-drinier
Sym-press II + 4 th press 70/80/105/120 kN/m ( 1988 )
Valmet steambox ( 1998)
Center roll ; Valrok C , Ceralease S
4th press roll; Valrok Standard
Sym ZS –rolls 3rd and 4 th press
Suction roll cover ; poly-urethane ( Stowe )
Double doctors at center and 4th press roll / Valmet
Tail-threading: tail roll and tail shooter
Drying section
38 drying cylinders and 7 vac rolls, cyl. dia 1500 mm
two single felt groups ( cyl.1-15) with 3 HI-Run boxes and 4 HS-boxes
three twin-run groups ( cyl. 16 – 45 )
Ropeless tail-threading : single groups with air pipes and twin-run groups with Metso's new double force system ( belt tail-threading)
steam pressure 350 kPa
automatic hood ventilation control
PAPER MACHINE ROLLS
Wire section
Lead rolls , D= 664 mm , L= 8150 mm, Bearing clearance= 8650 mm
Breast roll, D= 990, L=8100, BC = 8650mm
1st former roll, D=1200, L= 8200 mm, BC= 8850 mm
2nd former roll, D=990 mm, L= 8100mm, BC= 8100 mm
Bottom wire drive roll, D= 990 mm, L=8100mm , BC= 8570 mm
Top wire drive roll, D= 990mm, L= 8100 mm, BC= 8650 mm
Couch roll, D= 1210 mm, L= 8200 mm , BC= 9100 mm
Press section
Center rolls, D= 1375 mm, L= 8150 mm, BC= 9450 mm
Sym roll ( 1st press ) , D= 805 mm ( 925 mm) , L= 8100 ( 8450 ) , BC= 9100 ( 9300 )
Press suction roll , D= 1252 mm, L= 8200 mm, BC= 9450 mm
SymZS roll (8 zones ) , D= 805 mm, L= 8400 mm, BC= 9300 mm
Lead rolls, D= 664 mm, L= 8250 mm, BC= 9150 mm
Pick up suction roll, D= 1047 mm, L= 8250 mm, BC= 9300 mm
Spreader roll, D= 353 mm, L= 8320 mm, BC= 8920 mm
Drying section
Lead rolls D= 504 mm, L= 8100mm , BC= 8700 mm
Lead rolls, D= 554 mm, L= 8100 mm , BC= 8700 mm
Optireel cylinder
D= 1500 mm, L= 7950 mm BC= 8650 mm
PRODUCTION TECHNOLOGY
Reeler
Optireel Plus ( 1999 )
IQ-tension measurement
edge slitters
tail-threading; foil-force by Metso ( 3 belts )
spool dia 720 mm and a parent reel dia 2700 mm max.
Winders
JR 1000 ( 1988 )
Reel max dia 1500 mm, max width 3200 mm
6 pcs 4 ton and 4 pcs 6 ton stations
Twin winder ; center drum winder ( 1982)
max dia 1300 mm, max width 2600 mm
max reel weight 3 tons
Salvage winder
JR 300
max reel weight 6 tons
max dia 1500 mm, max width 3200 mm
Wrapping machine
conventional craft ( modernised several times )
max dia 1500mm, max width 3200 mm
Accuray 1190 process control system ( 1999 )
6 scanners , Smart Platform
- 6 x IR Hemi + (moisture)
- 6 x STLK11 (BW)
- 3 x Caliper GT
- 2 x 2-componet ASH
Profile actuators
Metso Steambox (electric actuators)
- 2 x Metso Coatmatic (Coatweight)
- 1 x IRT Infra dryer (Moisture)
- 1 x Impact Thermajet (caliper )
XDi DCS system ( 1999 )
Break camera system; Hilcont 500 D -> Proweb( 28 cameras ) (2003 )
Ulma nt hole detector system on basepaper ( 1999 ) and 3D-Ulma on the reeler
Maintenance monitoring system ( 1999 / 2005 )
Sensodec 6S
felt monitoring
pulsation 6 measurement units
vibration 460 measurement units
lubrication MACHINE HAS BEEN USED TO MAKE LWC, AND IT IS SOLD ONLY TO PRODUCE KRAFT PAPER!!!
COATER AND CALANDER ARE NOT INCLUDED!