What to look for in used contact towers

Surplus Energy Equipment (SEE) wants the people that view its equipment to be educated on what to look out for when purchasing used oilfield equipment. The purpose of this blog is to review some highlights and key characteristics of this used production equipment; specifically contact towers in amine and dehydration.

What is a contact tower? A contact tower is high pressure vessel that creates contact between liquid amine or desiccant with gas stream in order to create absorption time. There are 3 main types of contact towers bubble cap contact tower, random packed contact tower and structured pack contact tower.

  1. Bubble Cap Tray (most common) Bubble cap trays are used because of varying inlet flow rates. Tower typically have 5-6 trays, but some may have up to 8 trays. Properly designed, bubble trays retain good efficiencies over wide ranges of flow. Tray spacing typically varies from 18-30 inches.
  2. Random Packed are typically used in smaller tower diameters. Performs better in systems with foaming or corrosive gasses.
  3. Structured Packed provides the very low pressure drop and high efficiency required.

Look at the mating flanges to determine if the have enough meat on them and that if need be can be resurfaced to an appropriate tolerance. If there is a huge area of erosion you can conduct an UT test to determine tolerance level against the U1A.

If you would like to purchase a surplus or used contact tower off the website but would like to have it reconditioned or tested, that service can be conducted as well through our service partner, Croft Production Systems.

Need to buy parts for a contact tower click here.

If you have any used contact tower for sale click here.

If you like to buy a used contact tower click here.

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Cameron Croft

Founder and CEO Mr. Croft graduated from the University of Houston with a Bachelor of Science in Mechanical Engineering Technology and holds a Master of Science in Technology Project Management with a black belt in Lean Six Sigma. Since 2006, Mr. Croft has served as the founder/CEO of several other natural gas processing companies including Croft Production Systems and Croft Supply. In 2019, Mr. Croft established the Surplus Energy Equipment with a team of engineers that have been in the oil and natural gas industry for over 10 years. He designed this platform to allow clients to see a full line of equipment without having to make phone calls to vendors or spend time searching for quality equipment. His focus now is building relationships with vendors and expanding on the options available on surplusenergyequipment.com