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PSV1002 «авод по производству фанеры

ѕроизводительность 50000 м3 в год

Plywood mill ( 50 000 m3/annum )
Log yard ( about 3 ha ):
Machines and equipment:
  1 mobile crane with 8 m3 grab Ц Sennebogen 735
- 2 cranes with 4 m3 grab Ц Sennebogen 825
- 1 forklift for chips handling Ц Sennebogen 305
- 1 logs grading line Ц Hekotek
- 2 totally separated pools for logs heating ( 250 m3 each )

Veneer production area
1. Log debarking and sizing line
- capacity 18.0 m3/h logs
- average log diameter 236 mm debarked
- min/max logs length 1300 mm/5500 mm






Veneer production area


1. Log debarking and sizing line
- capacity 18.0 m3/h logs
- average log diameter 236 mm debarked

- min/max logs length 1300 mm/5500 mm



2. Peeling lines

- capacity 28.0 m3 green veneer /8 hours ( Raute line )
63.0 m3 green veneer /8 hours ( Angelo Cremona line )
- veneer thickness ( basic ) 1.5 mm
- veneer limit sizes 5x8 Ц Raute; 8x10 Ц Angelo Cremona









3. Additional equipment ( Chipping machine and etc. )
bark conveyor to the collecting box
log top-head, conveyor system to the collecting box
wet wood chips, properly treated for paper mill use and conveyor transport into a proper box / container
log cross-cutting dust conveyor





4. Dryer

- capacity 11.5 m3/h green veneer
- initial/final humidity 80% / ca. 6%
- air dryer temperature 192 ∞C

- heating fluid and its temperature diathermic oil, 217 ∞C





5. Dry veneer grading and stacking line

- dry veneer moisture detector

- 6 bins for veneer + 1 flap for randoms






6. Core composers ( 1700 mm veneer length and 2700 mm veneer length )

Veneer sheet size Цspliced


1300/1600 x 2550 mm



Number of joints per sheet

2
3
4
5
6

Number of full sheets/h

330
270
220
190
170

scanning system for thickness detection
veneer clipper
hot melt jointer and melt impregnated string jointer,
hot melt cooling system
size automatic clipper






7. Patching machines ( 2 pcs )





8. Veneer scarf-jointing line
- veneer sheet size - input 1300 / 1600 x 1300 / 1600 mm
output 2550 / 3150 x 1300 / 1600 mm - veneer sheet thickness Ц min 1,2 mm max 3,6 mm



Plywood production area


1. Glue kitchen
- glue mixer
- ready glue tank ( 8 m3 )
- wash water tank ( 8 m3 )
- piping system and transferring pumps - resin tanks ( 2 pcs, each 50 m3 )

2. Glue spreaders ( 2 pcs )

- vacuum automatic veneer feeder
- 4-roller glue spreader

- powered pivoting truck to transport the billet stack from two lay-up lines to the pre-press






3. Pre-press



4. Hot press ( 25 openings )

- capacity 6.7 m3/h finished panels
- phenolic glue
- platens size 3200x1900x50 mm
- plywood panel thickness ( basic ) 15 mm ( 11 ply )
- estimated pressing cycle 11.0 min
- min/max plywood thickness 4.0 mm / 40 mm
- specific pressure on 80% surface 20 kg/cm2








5. Plywood puttying line
- plywood panels in vertical position



6. Plywood squaring line
- basic plywood panel thickness 15 mm
- capacity 7 panels/min

- automatic panel feeder


7. Sanding line

- basic plywood panel thickness 15 mm
- standard working speed 25 m/min
- opposed calibrating and sanding rollers 2+2
- mirror
- 3 stacking stations

- ultrasound blown and unglued board detection system




8. Dry wood waste handling
  • plywood squaring dust: vacuum collecting system and vacuum conveyor
    completed with the necessary safety devices
    plywood sanding: vacuum collecting system and vacuum conveyor completed
     with the necessary safety devices
    veneer scarfing dust: vacuum collecting system and vacuum conveyor
     completed with the necessary safety devices

plywood squaring stripes: collecting box


Logistics

6 gas forklifts ( 1 pc: 3 tons, 4 pcs: 5 tons, 1 pc: 6 tons )
are used for material and ready products transportation inside the mill.


Thermic station plant and silos
Two boilers are used, each 8 Mw ( gas boiler and chips boiler ).

Three chips collecting bunkers are constructed, each 400 m3.

Maintenance

2 maintenance rooms with equipment ( possible to make: grinding, main machines repairing, drilling, milling and etc ).

Other existing equipment, mechanisms and units

- temperature regulation unit
- pipes, insulation, cocks, valves, pumps and connections between dryer, press and the a.m. plant
- pipelines for humid air exhaust outside the dryer and for air humidity normalisation system
- setting of connections between heat transferring fluid feeding pipe and batteries for the dryer
- gas suction hood and relevant aspirator over the press
- air compressor and pneumatic connections to the machines
- water piping
- ladders and gangways
- perimetral protection for the machines and the lines.
Appendix. Basic parameters.

1.Raw material
Wood species
 
            BIRCH logs suitable for plywood production,of good quality and regular shape, heat-treated.

            Possibility to process other species like Pine, Aspen.

Log diameter                           min 160 mm.max 800 mm  average 236 mm debarked

Log length for cross-cutting/debaeked   min 1300 mm.  max 5500 mm

Log length for peeling          min 130 mm.  max 270 mm. basic 1320-1620 mm and addtionally 2540 mm  

2.Plywood panel
Panel size
                                                       1220 x 2440 mm 4' x 8'
                                                       1525 x 3050 mm 5' x 10'
                                                       1525 x 1525 mm 5' x 5'
   and addtionally                       2440 x 1220 mm 8' x 4'

Veneer thickness range        min 1 mm. Max 4 mm

Plywood thickness range      min 4 mm. max 40 mm

Glue bonding  Phenolic         glue 32.5 days/yers
3. Working time
312.5 days/year  3 shifts/day  8 haurs/shift 750 hurs/yers(2 shifts/day for plywoodfinishing = 5000 hourd/year
4. Effective working time
80%; 90% for drying and plywood pressing
5. Rated capacity-plywood


Mill flow-Birch                                           m3/year                  m3/h              % Recovery

               Blocks to peel/debarked                  134.784                   18                    100,0
               Green veneer                                    78.175                     10,4                 58
               Dry veneer                                         71,139                     9,5                   52,8
               Plywood finished-sanded                  50000             6,7                   37   

Basic plywood panel size                                 30% -  4' x 8' -              1220 x 2440 x 15 mm - 11 ply
                                                                           50% -  5' x 10'              1525 x 3050 x 15 mm - 11 ply
                                                                           20% - 5' x 5'                1525 x 1525 x 15 mm - 11 ply

Basic veneer sheet size                               1300/1600 x 1400/3600 x 1.5 mm

Numbers of plywood panel/hour                30% - 4' x 8' x 15 mm - 2,0 m3/hour - 45 panel/hor
                                                                           50 % - 5' x 10' x 15 mm - 3,4 m3/hour - 49 panel/hour
                                                                           20% - 5' x 5' x 15 mm - 1,3 m3/hour - 37 panel/hour
                                                                                                                _____________________________
                                                                                                                 6,7 m3/hour - 131 panel/hour