Natural Gas Treating Overview

Kinder Morgan Treating is an industry leader for treating natural gas to remove CO2 and H2S.
 
Amine treating: Amine removes CO2 and H2S (acid gas or sour gas) via physical and chemical reactions in the contactor tower (absorber). This pressure vessel is typically the tallest component of an amine plant, to provide adequate residence time and control vapor-liquid flooding condition within design guidelines of the tower internals (trays or packing). Liquid amine/water solution flows from the top down and natural gas flows from the bottom up. Natural gas leaving the top of the tower has reduced CO2 and H2S (sweet gas) and amine leaving the bottom of the tower contains CO2 and H2S (rich amine).
 
Scavenger systems: Used to remove H2S from natural gas may be solid or liquid, both of which can be effective. Upon review of the inlet gas analysis and operating conditions, Kinder Morgan Treating will recommend the equipment to meet your needs.

Amine Treating

Amine Treating Plants
  • Efficiently remove CO2 and/or H2S to meet pipeline specifications and reduce corrosion
  • Regenerate amine for continual use and reduced chemical costs
  • Wide range of standard and custom plant sizes available
  • Modular design as applicable for ease of installation and reduced field work
  • Typically, amine treating plants are identified by the circulation rate in gallons per minute (GPM) of amine solution circulated in the system. Kinder Morgan Treating provides equipment ranging from 5 GPM to 2,000 GPM.
 
Kinder Morgan Treating Offering:
For each potential application, our process engineers perform a simulation to determine the equipment required to meet the desired specification. Once modeled, the equipment is designed and/or identified:
  • New equipment: Our fabrication facility in Odessa, TX designs and builds new standard and custom amine treating plants from 25 GPM to 2,000 GPM.
  • Lease Equipment: Our large lease fleet of amine plants consists of over 200 amine plants ranging in size from 5 GPM to 400 GPM.  
 
Our typical amine treating plants incorporate:
  • Robust gas trains with inlet filter separator, amine contactor and outlet scrubber that help maintain the integrity of the amine, thereby reducing operational expense and enhancing runtime
  • Redundant pumps and full flow bypasses on charcoal beds and sock filters that allow the plant to continue to operate during preventative maintenance
  • Flash tanks with adequate residence time to promote flash regeneration of amine, reduce the load on the reboiler and still column, and improve fuel efficiency
  • Allen Bradley PLC’s with touch screens for ease of operation and integration to SCADA systems
  • Larger plants use multi-stage centrifugal solution pumps that improve run time and reliability
 
CO2 and H2S Removal Process Summary:
Amine removes the corrosive, non-desirable CO2 and H2S (acid gas or sour gas) from natural gas streams via physical and chemical reactions in the contactor tower (absorber) to meet pipeline specifications and prevent corrosion of downstream equipment. Liquid amine/water solution flows from the top of the contactor and natural gas flows from the bottom of the contactor. Natural gas leaving the top of the tower has reduced CO2 and H2S (sweet gas) acceptable for downstream delivery. Amine leaving the bottom of the tower contains CO2 and H2S (rich amine), which is regenerated (lean amine) and sent back to the top of the contactor.

H2S Scavengers

H2S scavengers may be the optimum choice when:
  • H2S levels are only slightly over specification, with no CO2 removal required
  • Emissions from an amine plant may exceed permit thresholds
  • Gas pressure or volume may be lower than what is usually required for amine plant use
 
Kinder Morgan Treating is experienced with a variety of scavenger applications, including solids and liquids at the wellhead, in parallel with an amine plant, on the vent gas of an amine plant and more. Our highly experienced process engineers will suggest alternatives to help our clients find the best solution for any need.