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Gas Absorption Trainer with DCS Control

Model Series: GA-200
(Note: Current model constructed with welded stainless-steel support structure)

Function: The separation of gas mixtures and recovery of the components usually involves a regenerable absorbent. In the natural gas processing industry sulfur compounds and CO2 are removed by absorption by an aqueous amine solution. In this trainer, an air / CO2 mixture emulates the raw gas stream and CO2, the acid gas. The amine is regenerated and recycled through the process. The trainer is equipped with industry-typical process measurement and control devices, providing a realistic training environment in which the students are exposed to many available technologies. The trainer is controlled from a distributed control system

Process Specifications Highlights:
  • Continuously variable flows
  • Liquids are recycled
  • air and CO2 are vented outside
  • Intrinsically safe design
  • Designed for operations training
Process Details:

Absorber Side Process Temperature Ambient
Absorber Side Process Pressure 90 kPag (13 psig)
Regenerator Side Process Temperature 100 °C (212 °F)
Regenerator Side Process Pressure Atmospheric

Equipment Specification Highlights:
  • Glass absorber column with random packing – 6” (150mm) ID
  • Glass regenerator column with structured packing – 6” (150mm) ID
  • Glass reflux accumulator
  • All other process equipment made of stainless steel
  • Reboiler with optional electric or steam heat – 30kW capacity
  • Brazed-plate heat exchanger
  • Two centrifugal pumps and one variable-speed displacer pump
  • Electronic process measurement and distributed control system with 8 control loops including:
    • Pressure control (differential pressure)
    • Liquid and gaseous flow control with orifice meters
    • Level control (with D/P based level measurement)
    • Three continuously operating CO2 analyzers
    • Ten temperature measurement (and control) points
    • Time to reach steady state after a reasonable step change – less than 20 minutes
  • Approximate overall minimum dimensions –1300 x 4100x 3000 mm high. Equipment dimensions can be modified based on room size and layout.
  • Available in all world voltages / frequencies (customer to specify electrical power available on-site)
Control Component Protocol:
  • Hart 4-20 mA
Utility Supply: (any world electrical supplies can be provided – please specify)
  • 110VAC 60Hz single phase power (230 VAC 50 Hz Single Phase Option Available)
  • 440VAC 60Hz 3 phase power (415 VAC 50 Hz Three Phase Option Available)
  • Instrument air at a minimum of 250kPa (35psig)
  • CO2 Supply
  • Cooling water (Closed cooling water loop available as an option)
  • Cooling water return
Note: A complete teaching system is included with student exercises, instructors’ manual, technical and maintenance manuals.
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