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GAB-NeumannGraphite Columns and Column Internals

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Graphite columns are designed for the distillation of ultra-corrosive fluids as well as the washing, absorption, or scrubbing of ultra-corrosive gases. Each graphite column is custom-made to best fit with existing process requirements. They consist in graphite cylindrical sections that are stacked one above the other.

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Materials:
  • Impervious graphite: GAB GPX1, GPX1T or GPX2
  • Internals: impervious graphite or Carbon Fiber Reinforced Composite (CFC)
  • Shell, Pressure plates and flanges: carbon steel or stainless steel
  • Tie rods, nuts, bolts, washers, springs: stainless steel
  • PTFE and/or graphite gaskets between the column rings
Design:
  • Modular design: diameter and number of sections can be adjusted
  • Possible integration of process equipment (condenser, reboiler, etc...)
    • Impregnated graphite discs with annular groove design (spiral)
  • Column diameter: up to DN800 as a standard, larger diameters on request
  • Full corrosion and vacuum resistance
  • Graphite nozzles location and orientation as per process requirements
  • Compensation of the differential thermal expansion with tie-rods and springs
  • Thermal expansion compensation ensured by tie rods and helical springs

Key Features:

  • Design pressure: -1 barg (full vacuum) to +3 barg (45 psig), depending on nominal diameter as well as design pressure and temperature
  • Design temperature: -60 to +200°C (-76 to 392°F)
  • Design:  according to European PED, ASME code, Chinese Pressure Vessel code and other national pressure vessel codes on request
  • Internals: packing in graphite, ceramics, PTFE and other fluoropolymers, bubble cap trays and banana trays, support rings and support grids, liquid distributors, gas spargers, demisting beds, and custom-made parts on request
  • Outstanding corrosion resistance on one side or on both sides
  • Easy disassembly
  • High operational safety
  • Sturdy and modular design
  • Short lead time
  • Long lifetime