FOR LATEST OFFERS PLEASE VISIT OUR NEW WEBSITE www.bpmbllp.com

Solid State Polycondensation Lines For Pet Bottle Grade Resin

Solid State Polycondensation Lines For Pet Bottle Grade Resin
 
Description of the lines
These are two technological lines for the manufacturing (additional polycondensation) of the bottle grade PET resin which is used in the production of popular PET bottles for beverages. They are based on the solid state polycondensation technology developed by the famous Swiss BUHLER company. The production process depends on thermal treatment of the raw material (amorphous polymer A-PET of the Initial IV about 0.6 dl/g) in the equipment of the lines. The lines consist of five basic process loops each, where the material is treated by the temperature in the specified conditions for a certain period of time. During processing amorphous material, its molecular weight changes to the value expected for bottle grade, or higher, up - even to 1.0 dl/g.
There is ability to process R-PET materials on these lines, too. Beside the standard bottle grade we have experienced processing R-PET and the fiber grade homo-polymers to the values of 0.96 – 1.0.
Nominal capacities of the lines were increased to the following values: Line 45 up 60 t/d and Line 60 up to 76,8 t/d.
Main process Loops:
- precrystalisation;
- crystalisation;
- preheating;
- polycondensation;
- cooling.
The technological process is visualized by the drawing (appendix No.1).
On the stages of preheating and polycondensation, the process takes place in the atmosphere of pure nitrogen. This is for the protection of the material against the color degradation in high temperature conditions. The nitrogen loop is closed, equipped with a special cleaning system based on the Pt-ctalyst. This is a system where main byproducts of the process are removed from the gas. These byproducts are acetaldehyde and ethylene glycol. They are burned and transformed into environmentally safe water and carbon dioxide. The dust (which is a product of a constant friction of the pellets) has to be removed from the process gas, too. For that purpose, systems of cyclones and special type filters are installed there. The loop has to be constantly feed with pure, fresh nitrogen. The gas is dried in the Gas Dryer system. The process of solid state polycondensation is a continuous one. Friction of the pellets was eliminated as much as possible through installing specially constructed equipment. This helps to keep the material consumption at the lowest possible level and limit the amount of waste. For the production of 1000kg of the final product we need 1005kg of the raw material (amorphous PET). A complex of raw material silos (1 for 45t/d & 1 for 60 t/d line) can store 120 tons of amorphous pellets. The final product stations can store 440 tons of the product (140 t for 45/d line and 300t for 60t/d line). The final product complexes are also equipped with so called big - bag stations for each line with electronic scales that enable to pack the final product into special – 1000-1200 kg big- bags. Filling the autotrack- silo is possible, too. It is enabled thanks to the special equipment installed under the silo group.
It is also possible to unload trucks with raw material deliveries straight to the raw-material silo as well as to feed the line straight from the big bags. The whole process goes in a hermetic equipment and is controlled by computer systems (Simens S-5, visualization on two independent PC’s on the Factorylink platforms). Additional control of the process is possible through sight-glasses placed on each equipment unit. It enables to reach stable quality parameters of the product.
 
2. Characteristic data
- Technology: Buhler AG – Switzerland
- Supplier: Buhler AG – Switzerland
- Daily capacity (throughput): after increasing - 60 t/d for SSP 45 and 76,8 t/d for SSP 60
The line 45 t/d was put into operation in 1995 and line 60 t/d in 1997. The main units of the whole integrated lines are:
 
1.1. Unit 1
Two main buildings where both lines are placed. Buildings are based on steel structure with five
levels and they are connected together with one wall. On the level 0.0 in the floor there are
technological channels installed. Lines are equipped in the following systems:
1.Electrical
2. Nitrogen feeding
3. Compressed air
4. Cooling water
5. Drinking water
6. Lightning protection
 
Buildings are 29 meters high. Data for two buildings:
1. Land development area 329 m2
2. Usable area 1544 m2
3. Cubic capacity 9280 m3
 
1.2. Unit 2
1.                 Integrated objects of two steering rooms, two trafo - station, two swiching station for the
2.                 lowvoltage and social rooms. These are one level buildings of traditional construction. Buildings
3.                 are equipped with central heating, canalization, telephone and ventilation installations.
4.                 Data for 6 objects together:
5.                 1. Land development area 305 m2
6.                 2. Usable area 265 m2
7.                 3. Cubic capacity 1168 m3
 
1.3. Unit 3
Unit consisted of raw material silo station and two umbrella roofs for storage.
Raw material silo station – Stand for two raw material silo (amorphous) made from stainless steel of capacity 100m3 each. Support steel structure construction with technological ladders and platforms. Is equipped with electrical power, pressed air and central heating systems, lighting protection and ventilation.
1. Land development area 107 m2
2. Usable area 101 m2
3. Cubic capacity 749 m3
 
Umbrella roofs for storage - steel structure construction faying to raw material silo station
covered with sheet metal plates, equipped with moving electrical hoist of capacity 1500 kg.
1. Land development area 269 m2
2. Usable area 257 m2
3. Cubic capacity 1829 m3
 
1.4. Unit 4
1.                 Unit consisted from two objects of final product silo stations.
2.                 Final product silo station for SSP 45 t/d – stand for two stainless steel silo of 100 m3 capacity
3.                 each. Steel structure support construction with ladders and technological platforms. Area is
4.                 equipped with pressed air and electrical systems as well as lighting protection and ventilation
5.                 installations. Storage capacity of final product is about 140 tones.
6.                 Final product silo station for SSP 60 t/d - stand for three stainless steel silo of 125m3 capacity
7.                 each. Steel structure support construction with ladders and technological platforms. Equipped
8.                 with pressed air and electrical systems as well as lighting protection and ventilation installations.
9.                 Storage capacity of final product is about 300 tones.
 
Data summarized for two buildings:
1. Land development area 113 m2
2. Usable area 104 m2
3. Cubic capacity 552 m3
 
3. Technical specification
3.1 Installed Power
Installed Power
SSP 45
 
Power voltage 220/380 V
Frequency 50Hz
Electric motors:
Installed motor power
Consumption
Control system
270 kW
175 kW
10kW
Heaters:
Installed heater power
Consumption
480kW
335 kW
 
 
Installed Power
SSP 60
Power voltage 380 V (10 %)
Frequency 50Hz
Electric motors:
Installed motor power
Consumption
Control system
275 kW
179 kW
10kW
Heaters:
Installed heater power
Consumption
550kW
380 KW
 
3.2 Utilities
Utilities – Specifications & consumptions
SSP 60
Cooling Water Pressure 6 bar
Pure nitrogen (99,5%) Pressure 5,5 bar; dew point (-20ºC)
Instrument air Pressure 5,5 bar
Plant air Pressure 7 bar
 
Utility Consumption (evaluating for two running lines in constant
production):
Electrical power 0,18 MWh/t
Pressed air 117 m3/t
Pure nitrogen (99,5%) 19,1 m3/t
Cooling water 0,175 m3/t

Ref.  CGS9137

Brueckner Bopp 3 layer Co-Extrusion Line 6.400mm Year - 1991

Brueckner Bopp 3 layer Co-Extrusion Line 6.400mm Year - 1991

Net. width 6.000mm incl.
KAMPF Slitter Net. width 6.000mm
In full operation.
Film Specifications:
1. Film production quantity maximum per month.
- approx.. Output 40 t/day in full operation
2. Film max width at TDO outlet.
- 6.300mm
3. Film max width at T/W
- 6.000mm
4. Film layer configuration and Nos.
- 3 layers
5. Film production thickness range.
- 15-50 micron
Machine Specifications:
1. Extruder (BARMAG) output max.
- 2.200 kgs/hr.
2. Co-Extruder output output max.
- 2x 100kgs/hr.
3. Including 4x Co-Extruder Silos and 1 main Extruder Silo.
4. DIE max sheet width.
- 890mm
5. MDO machine speed.
- Slow drive 70M/min. Fast drive 300m/min
6. MDO film max width.
- 850mm
7. TDO film inlet width.
- 720mm to 800mm
8. TDO film max orientation width.
- 9X
9. TDO machine max speed
- 300m/min
10. T/W film max width.
- 6.000mm
11. T/W machine max speed.
- Operating speed 150 to 220m/min, design speed 280m/min
12. T/W film roll max diameter
- 1000mm
13. MERO both side Corona treater.
14. PIOVAN Dosing system.
15. Year
- 1991
 

 
Ref.  CGS91314

Tau System Film Ax-1-Cast Extrusion Lines - Cast Film

Tau System Film  Ax-1-Cast Extrusion Lines - Cast Film
Manufacturer: TAU SYSTEM
Model: AX-1-CAST
Year: 1996
Number of layers: 3
Film structure: BAC
Material: STRETCH , LLDPE/PP
Film width (mm): 1850
Speed (m/min): Mechanical speed of winders: 10-200m/min;
Output (Kg/h): Output:420 kg/h;
Extruder 1 Layer ref: : A - Type: 55/30 D; Screw speed: 0-200 rpm, Length:1650mm
Screw diam: 55
Description: Gravimetric dosing unit
Extruder 2 Layer ref: : B- Type 90/30D, Length:2700mm;screw speed: 0-145rpm
Screw diam: 90
Description: Gravimetric dosing unit
Extruder 3 Layer ref: : C - Type: 55/30 D; Screw speed: 0-200 rpm
Screw diam: 55
Description: Gravimetric dosing unit
Die width (mm): 1850
Chill roll unit: Flat die type L3J 1850 mm;lip gaps adjustable: 10-100 microns,Upperlip gapping:
every 25 mm push screw;Heating: 9 zones;Flow surface: hard chromium plated and mirror
polished;\r\n\r\n\r\n
Thickness controll system: Oscillating take off unit; Sintel 900 system thickness ,gauge system
Rewinder description: Semi-automatic
Additional informations: Cardboard cores for bobbins: 76 mm (internal diam.) .

Ref.  CGS10139