The heavy gauge treater shell has seven distinct chambers/components to facilitate each of the following stages of oil treatment:

  • Emulsion Preheat
  • Free Water Removal
  • Emulsion Heating
  • Outlet Gas Scrubbing
  • Outlet Gas Cooling
  • Electrostatic Coalescing Grid w/ Transformer
  • Crude Settling

All KOCKEN Electrostatic Treaters are constructed according to the API 12L Specification for Vertical and Horizontal Emulsion Treaters and applicable Industry Codes and Standards.

Normally an elevated vertical Flare Stack is used however Incinerators, Ground Flares, and Flare Booms are available and considered depending on site / platform requirements. All KOCKEN waste gas equipment is designed and fabricated in accordance with API 521 & 537, ASME B31.3, and applicable local Environmental Regulations such as NEQS.

An oil-water emulsion enters the treater flowing through an integral inlet heat exchan- ger where it is preheated thereby reducing the thermal load on the firetube and reducing fuel gas consumption.

The emulsion then flows into the KOCKEN S-Cone® inlet device. Centrifugal force creates a vortex and accentuates the separation effect. Here the free gas is spun upwards out the center of the vortex and the liquid emulsion flows downward and exits below the fire-tube in the free-water knock-out section of the treater. The free water is drawn off below the firetube for additional reductions in thermal load and subsequent fuel gas requirements.

The oil-water emulsion then flows into the heating section of the treater. The oil-water emulsion is heated to 120°F to 180°F as required to ensure that the viscosity of the emulsion is maintained below 150 SSU. The firetube is protected by a heat shroud to ensure that no free-water comes into contact with it, thereby reducing fouling and ex- tending the firetube life.

The heated oil-water emulsion then flows through the coalescing section of the Treater and into the water settling zone for the final stage of oil-water separation. The electrostatic grid polarizes the conductive water molecules thereby forcing them to coalesce into larger particles and settle out of the crude. Adequate retention time is provided to ensure that the water settles and that the gas breaks out of the oil. The clean treated oil then exits the treater having a BS&W as low as 0.1%.

The inherent design features of the treater facilitate easy and reliable sand removal in both the horizontal and vertical configurations.



  • AC or DC Electrostatic Grid
  • Integral Free Water KO
  • De-Sanding System
  • Firetube Economizers
  • Firetube Turbulators
  • Forced Draft Burners
  • Chimney Dampners
  • Burner Management Systems
  • ASME Section VIII Construction
  • Fuel Gas Scrubbers
  • Ladders & Platforms


  • Oil Flow Rate
  • Oil Gravity
  • Water Rate or Percentage
  • Average GOR
  • Emulsion Inlet Temperature
  • Emulsion Inlet Pressure
  • H2S / CO2 Content
  • Sand / Salt / Solids Content
  • Maximum BS&W of Clean Oil
  • Fuel Source & Heating Value