Sulfur Dioxide Handling - Unloading Module

The Powell Sulfur Dioxide Unloading Module is designed for the offloading of sulfur dioxide from railcars and tank cars. The piping, valve arrangement, and program logic are based on the stringent safety standards used in the chlorine industry for the unloading of railcars (Chlorine Institute Pamphlet 57).

Sulfur Dioxide Railcar Unloading

The Powell Sulfur Dioxide Unloading Module is supplied as a complete unit with all controls and instrumentation pre-assembled, wired, and pressure tested. This simplifies installation significantly, potentially resulting in considerable savings in time and materials.

The Powell Sulfur Dioxide Unloading Module is completely customizable to accommodate individual customer needs. In the configuration displayed in the photo below, the top line is used for the sulfur dioxide coming off of the railcar while the middle line is used to evacuate the line of sulfur dioxide before disconnecting it from the car. This line is pulled into a sulfur dioxide scrubber. The bottom line of piping is for padding dry air to the railcar.

Features of the Powell Sulfur Dioxide Unloading Module

  • Welded A-106 seamless schedule 80 carbon steel piping.
  • 300# flanged Durco plug valves
  • Ashcroft 30/0/300 compound pressure gauges, 300# flanged or 1" NPT seals available.
  • Allen-Bradley CompactLogix® processor with color screen display, NEMA 4X enclosure, programmed by Powell.
  • Instrument air manifold, including individual isolation valves with locking handles.
  • ASCO low power 24 VDC solenoid valves.

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The Powell Sulfur Dioxide Unloading Module is customizable to meet your unique needs. Contact powell today for more information.