Ammonia Unloading Module for Tank Cars or Railcars

The Powell Ammonia Unloading Module is designed for the off-loading of anhydrous ammonia from railcars or 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).

ammonia control

The 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 Ammonia 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 ammonia coming off of the railcar while the middle line is used to evacuate the line of ammonia before disconnecting it from the car. This line is pulled into an ammonia scrubber. The bottom line of piping is for padding ammonia vapor supply to the railcar.

Features of the Powell Ammonia Unloading Module

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

Contact Us

The Powell Ammonia Unloading Module is customizable to meet your unique needs. Contact us today for more information.