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Werner & Pfleiderer, ZSK-250, 1996, Twin Screw Extruder System, 250mm Screw Diameter, 5000 HP

Werner & Pfleiderer, ZSK-250, 1996, Twin Screw Extruder System, 250mm Screw Diameter, 5000 HP

Description

  1. Overview
    1. Werner & Pfleiderer (Coperion) Zsk-250 twin screw extruder system
    2. Type Bd108/205-R70
    3. 250 mm screw diameter
    4. Previously used in polypropylene applications
    5. Originally delivered in February 1996 to a polypropylene facility
    6. Moved to a separate location during facility closure with the expectation of installation when the polypropylene unit was debottlenecked, but never installed due to insufficient space
  2. Condition
    1. In excellent condition
    2. Professionally dismantled and packaged for shipment
    3. Immediately available
    4. The 250 mm twin screw extruder unit has been disassembled and stored in a temperature-controlled environment; some equipment is in crates and others under tarps
    5. A certain degree of care was taken in storing this W-P unit; the overall condition is good
    6. Care has been taken to maintain it and the GE drive
  3. Included Equipment
    1. Renke-Tacke gearbox (the gearbox shows little wear; the main shaft was hand-rotated to check the full range of gears)
    2. 5,000 hp, 60 Hz, 1,185 rpm GE main drive motor
    3. GE gearbox auxiliary drive
    4. Extruder exhaust vent fan
    5. SWZ 1900 screen changer
    6. Control panel with unit
  4. Component Details
    1. 1185 speed input
    2. 221/148 speed output
    3. 1.5 service factor
    4. Main drive motor is a General Electric 5000 hp motor
    5. 1185 rpm, 626 amp, 4160 volts, 3 phase, 60 hertz, 0.86 power factor
    6. Frame 8613S
    7. Service factor: AGMA Sf = 1.5
    8. Viscosity class: maintenance
    9. Oil contents (L): ca. 2000
    10. Oil required (L/min): 560
    11. Oil pressure (bar): 1-2
    12. TOUT MAX = 70009 Nm/shaft
  5. Cylinder Barrel
    1. General condition: good
    2. Book center line: 205 mm = 8.07 inches
    3. Recommended finish size: 251 mm = 9.881 inches
    4. Right barrel ID 9.886 inches at 6 inches from feed end
    5. Left barrel ID 9.886 inches at 6 inches from feed end
  6. Feed Screw
    1. General condition: good
    2. No recommended diameter found in documents
    3. Right screw OD - 9.763 inches approximately 36" from start of flights
  7. Basic Extruder Power Supply - Drive 5000 Hp GE Motor
    1. Rated hp: 5000
    2. Rpm: 1185
    3. Amp: 626
    4. Volts: 4160
    5. Phase: 3
    6. Hertz: 60
    7. Power factor: 0.86
    8. Efficiency: 95.9%
    9. Service factor: 1.0
    10. Insulation class: F
    11. Temperature rise: 85 °C
    12. Stator by: RTD at 1.00 SF
    13. Time rating: continuous
    14. Amb. temperature (°C): 40 max to -18 min
    15. Altitude (ft): 3300
    16. Type: KG
    17. Frame: 8613S
    18. Enclosure: WPI
    19. LRA (%): 600
    20. Drive end brg: sleeve
    21. Lubricant: oil
    22. Lubricant: 300 SSU at 100°C
    23. This motor requires forced lubrication
    24. Caution: do not operate without forced lubrication
  8. Documentation
    1. At least 3 complete 16-volume sets of "owners' manuals" operating instructions for each piece, diagrams, installation instruction, preoperational checks, lubricant specifications
    2. Included are many engineering drawings such as the piping & instrument diagram, electrical diagrams, downstream equipment diagrams, etc.
  9. Pellet Geometry Notes
    1. The geometric shape that has the pellet when it leaves the extruder depends on several parameters: the rotation speed of the knife, the intrinsic viscosity of the polymer, the temperature inside the extruder, etc.
    2. Each customer requires a specific form called length/diameter ratio, so we can adjust the parameters measured above it and get pellets that resemble short rice grain or long